diff options
Diffstat (limited to 'vendor/golang.org/x/tools')
48 files changed, 0 insertions, 13257 deletions
diff --git a/vendor/golang.org/x/tools/AUTHORS b/vendor/golang.org/x/tools/AUTHORS deleted file mode 100644 index 15167cd74..000000000 --- a/vendor/golang.org/x/tools/AUTHORS +++ /dev/null @@ -1,3 +0,0 @@ -# This source code refers to The Go Authors for copyright purposes. -# The master list of authors is in the main Go distribution, -# visible at http://tip.golang.org/AUTHORS. diff --git a/vendor/golang.org/x/tools/CONTRIBUTORS b/vendor/golang.org/x/tools/CONTRIBUTORS deleted file mode 100644 index 1c4577e96..000000000 --- a/vendor/golang.org/x/tools/CONTRIBUTORS +++ /dev/null @@ -1,3 +0,0 @@ -# This source code was written by the Go contributors. -# The master list of contributors is in the main Go distribution, -# visible at http://tip.golang.org/CONTRIBUTORS. diff --git a/vendor/golang.org/x/tools/LICENSE b/vendor/golang.org/x/tools/LICENSE deleted file mode 100644 index 6a66aea5e..000000000 --- a/vendor/golang.org/x/tools/LICENSE +++ /dev/null @@ -1,27 +0,0 @@ -Copyright (c) 2009 The Go Authors. All rights reserved. - -Redistribution and use in source and binary forms, with or without -modification, are permitted provided that the following conditions are -met: - - * Redistributions of source code must retain the above copyright -notice, this list of conditions and the following disclaimer. - * Redistributions in binary form must reproduce the above -copyright notice, this list of conditions and the following disclaimer -in the documentation and/or other materials provided with the -distribution. - * Neither the name of Google Inc. nor the names of its -contributors may be used to endorse or promote products derived from -this software without specific prior written permission. - -THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS -"AS IS" AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT -LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR -A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT -OWNER OR CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, -SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT -LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, -DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY -THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT -(INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE -OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE. diff --git a/vendor/golang.org/x/tools/PATENTS b/vendor/golang.org/x/tools/PATENTS deleted file mode 100644 index 733099041..000000000 --- a/vendor/golang.org/x/tools/PATENTS +++ /dev/null @@ -1,22 +0,0 @@ -Additional IP Rights Grant (Patents) - -"This implementation" means the copyrightable works distributed by -Google as part of the Go project. - -Google hereby grants to You a perpetual, worldwide, non-exclusive, -no-charge, royalty-free, irrevocable (except as stated in this section) -patent license to make, have made, use, offer to sell, sell, import, -transfer and otherwise run, modify and propagate the contents of this -implementation of Go, where such license applies only to those patent -claims, both currently owned or controlled by Google and acquired in -the future, licensable by Google that are necessarily infringed by this -implementation of Go. This grant does not include claims that would be -infringed only as a consequence of further modification of this -implementation. If you or your agent or exclusive licensee institute or -order or agree to the institution of patent litigation against any -entity (including a cross-claim or counterclaim in a lawsuit) alleging -that this implementation of Go or any code incorporated within this -implementation of Go constitutes direct or contributory patent -infringement, or inducement of patent infringement, then any patent -rights granted to you under this License for this implementation of Go -shall terminate as of the date such litigation is filed. diff --git a/vendor/golang.org/x/tools/go/gcexportdata/gcexportdata.go b/vendor/golang.org/x/tools/go/gcexportdata/gcexportdata.go deleted file mode 100644 index cec819d64..000000000 --- a/vendor/golang.org/x/tools/go/gcexportdata/gcexportdata.go +++ /dev/null @@ -1,146 +0,0 @@ -// Copyright 2016 The Go Authors. All rights reserved. -// Use of this source code is governed by a BSD-style -// license that can be found in the LICENSE file. - -// Package gcexportdata provides functions for locating, reading, and -// writing export data files containing type information produced by the -// gc compiler. This package supports go1.7 export data format and all -// later versions. -// -// Although it might seem convenient for this package to live alongside -// go/types in the standard library, this would cause version skew -// problems for developer tools that use it, since they must be able to -// consume the outputs of the gc compiler both before and after a Go -// update such as from Go 1.7 to Go 1.8. Because this package lives in -// golang.org/x/tools, sites can update their version of this repo some -// time before the Go 1.8 release and rebuild and redeploy their -// developer tools, which will then be able to consume both Go 1.7 and -// Go 1.8 export data files, so they will work before and after the -// Go update. (See discussion at https://golang.org/issue/15651.) -// -package gcexportdata // import "golang.org/x/tools/go/gcexportdata" - -import ( - "bufio" - "bytes" - "fmt" - "go/token" - "go/types" - "io" - "io/ioutil" - - "golang.org/x/tools/go/internal/gcimporter" -) - -// Find returns the name of an object (.o) or archive (.a) file -// containing type information for the specified import path, -// using the workspace layout conventions of go/build. -// If no file was found, an empty filename is returned. -// -// A relative srcDir is interpreted relative to the current working directory. -// -// Find also returns the package's resolved (canonical) import path, -// reflecting the effects of srcDir and vendoring on importPath. -func Find(importPath, srcDir string) (filename, path string) { - return gcimporter.FindPkg(importPath, srcDir) -} - -// NewReader returns a reader for the export data section of an object -// (.o) or archive (.a) file read from r. The new reader may provide -// additional trailing data beyond the end of the export data. -func NewReader(r io.Reader) (io.Reader, error) { - buf := bufio.NewReader(r) - _, size, err := gcimporter.FindExportData(buf) - if err != nil { - return nil, err - } - - if size >= 0 { - // We were given an archive and found the __.PKGDEF in it. - // This tells us the size of the export data, and we don't - // need to return the entire file. - return &io.LimitedReader{ - R: buf, - N: size, - }, nil - } else { - // We were given an object file. As such, we don't know how large - // the export data is and must return the entire file. - return buf, nil - } -} - -// Read reads export data from in, decodes it, and returns type -// information for the package. -// The package name is specified by path. -// File position information is added to fset. -// -// Read may inspect and add to the imports map to ensure that references -// within the export data to other packages are consistent. The caller -// must ensure that imports[path] does not exist, or exists but is -// incomplete (see types.Package.Complete), and Read inserts the -// resulting package into this map entry. -// -// On return, the state of the reader is undefined. -func Read(in io.Reader, fset *token.FileSet, imports map[string]*types.Package, path string) (*types.Package, error) { - data, err := ioutil.ReadAll(in) - if err != nil { - return nil, fmt.Errorf("reading export data for %q: %v", path, err) - } - - if bytes.HasPrefix(data, []byte("!<arch>")) { - return nil, fmt.Errorf("can't read export data for %q directly from an archive file (call gcexportdata.NewReader first to extract export data)", path) - } - - // The App Engine Go runtime v1.6 uses the old export data format. - // TODO(adonovan): delete once v1.7 has been around for a while. - if bytes.HasPrefix(data, []byte("package ")) { - return gcimporter.ImportData(imports, path, path, bytes.NewReader(data)) - } - - // The indexed export format starts with an 'i'; the older - // binary export format starts with a 'c', 'd', or 'v' - // (from "version"). Select appropriate importer. - if len(data) > 0 && data[0] == 'i' { - _, pkg, err := gcimporter.IImportData(fset, imports, data[1:], path) - return pkg, err - } - - _, pkg, err := gcimporter.BImportData(fset, imports, data, path) - return pkg, err -} - -// Write writes encoded type information for the specified package to out. -// The FileSet provides file position information for named objects. -func Write(out io.Writer, fset *token.FileSet, pkg *types.Package) error { - if _, err := io.WriteString(out, "i"); err != nil { - return err - } - return gcimporter.IExportData(out, fset, pkg) -} - -// ReadBundle reads an export bundle from in, decodes it, and returns type -// information for the packages. -// File position information is added to fset. -// -// ReadBundle may inspect and add to the imports map to ensure that references -// within the export bundle to other packages are consistent. -// -// On return, the state of the reader is undefined. -// -// Experimental: This API is experimental and may change in the future. -func ReadBundle(in io.Reader, fset *token.FileSet, imports map[string]*types.Package) ([]*types.Package, error) { - data, err := ioutil.ReadAll(in) - if err != nil { - return nil, fmt.Errorf("reading export bundle: %v", err) - } - return gcimporter.IImportBundle(fset, imports, data) -} - -// WriteBundle writes encoded type information for the specified packages to out. -// The FileSet provides file position information for named objects. -// -// Experimental: This API is experimental and may change in the future. -func WriteBundle(out io.Writer, fset *token.FileSet, pkgs []*types.Package) error { - return gcimporter.IExportBundle(out, fset, pkgs) -} diff --git a/vendor/golang.org/x/tools/go/gcexportdata/importer.go b/vendor/golang.org/x/tools/go/gcexportdata/importer.go deleted file mode 100644 index efe221e7e..000000000 --- a/vendor/golang.org/x/tools/go/gcexportdata/importer.go +++ /dev/null @@ -1,73 +0,0 @@ -// Copyright 2016 The Go Authors. All rights reserved. -// Use of this source code is governed by a BSD-style -// license that can be found in the LICENSE file. - -package gcexportdata - -import ( - "fmt" - "go/token" - "go/types" - "os" -) - -// NewImporter returns a new instance of the types.Importer interface -// that reads type information from export data files written by gc. -// The Importer also satisfies types.ImporterFrom. -// -// Export data files are located using "go build" workspace conventions -// and the build.Default context. -// -// Use this importer instead of go/importer.For("gc", ...) to avoid the -// version-skew problems described in the documentation of this package, -// or to control the FileSet or access the imports map populated during -// package loading. -// -func NewImporter(fset *token.FileSet, imports map[string]*types.Package) types.ImporterFrom { - return importer{fset, imports} -} - -type importer struct { - fset *token.FileSet - imports map[string]*types.Package -} - -func (imp importer) Import(importPath string) (*types.Package, error) { - return imp.ImportFrom(importPath, "", 0) -} - -func (imp importer) ImportFrom(importPath, srcDir string, mode types.ImportMode) (_ *types.Package, err error) { - filename, path := Find(importPath, srcDir) - if filename == "" { - if importPath == "unsafe" { - // Even for unsafe, call Find first in case - // the package was vendored. - return types.Unsafe, nil - } - return nil, fmt.Errorf("can't find import: %s", importPath) - } - - if pkg, ok := imp.imports[path]; ok && pkg.Complete() { - return pkg, nil // cache hit - } - - // open file - f, err := os.Open(filename) - if err != nil { - return nil, err - } - defer func() { - f.Close() - if err != nil { - // add file name to error - err = fmt.Errorf("reading export data: %s: %v", filename, err) - } - }() - - r, err := NewReader(f) - if err != nil { - return nil, err - } - - return Read(r, imp.fset, imp.imports, path) -} diff --git a/vendor/golang.org/x/tools/go/internal/gcimporter/bexport.go b/vendor/golang.org/x/tools/go/internal/gcimporter/bexport.go deleted file mode 100644 index 0a3cdb9a3..000000000 --- a/vendor/golang.org/x/tools/go/internal/gcimporter/bexport.go +++ /dev/null @@ -1,851 +0,0 @@ -// Copyright 2016 The Go Authors. All rights reserved. -// Use of this source code is governed by a BSD-style -// license that can be found in the LICENSE file. - -// Binary package export. -// This file was derived from $GOROOT/src/cmd/compile/internal/gc/bexport.go; -// see that file for specification of the format. - -package gcimporter - -import ( - "bytes" - "encoding/binary" - "fmt" - "go/ast" - "go/constant" - "go/token" - "go/types" - "math" - "math/big" - "sort" - "strings" -) - -// If debugFormat is set, each integer and string value is preceded by a marker -// and position information in the encoding. This mechanism permits an importer -// to recognize immediately when it is out of sync. The importer recognizes this -// mode automatically (i.e., it can import export data produced with debugging -// support even if debugFormat is not set at the time of import). This mode will -// lead to massively larger export data (by a factor of 2 to 3) and should only -// be enabled during development and debugging. -// -// NOTE: This flag is the first flag to enable if importing dies because of -// (suspected) format errors, and whenever a change is made to the format. -const debugFormat = false // default: false - -// Current export format version. Increase with each format change. -// Note: The latest binary (non-indexed) export format is at version 6. -// This exporter is still at level 4, but it doesn't matter since -// the binary importer can handle older versions just fine. -// 6: package height (CL 105038) -- NOT IMPLEMENTED HERE -// 5: improved position encoding efficiency (issue 20080, CL 41619) -- NOT IMPLEMEMTED HERE -// 4: type name objects support type aliases, uses aliasTag -// 3: Go1.8 encoding (same as version 2, aliasTag defined but never used) -// 2: removed unused bool in ODCL export (compiler only) -// 1: header format change (more regular), export package for _ struct fields -// 0: Go1.7 encoding -const exportVersion = 4 - -// trackAllTypes enables cycle tracking for all types, not just named -// types. The existing compiler invariants assume that unnamed types -// that are not completely set up are not used, or else there are spurious -// errors. -// If disabled, only named types are tracked, possibly leading to slightly -// less efficient encoding in rare cases. It also prevents the export of -// some corner-case type declarations (but those are not handled correctly -// with with the textual export format either). -// TODO(gri) enable and remove once issues caused by it are fixed -const trackAllTypes = false - -type exporter struct { - fset *token.FileSet - out bytes.Buffer - - // object -> index maps, indexed in order of serialization - strIndex map[string]int - pkgIndex map[*types.Package]int - typIndex map[types.Type]int - - // position encoding - posInfoFormat bool - prevFile string - prevLine int - - // debugging support - written int // bytes written - indent int // for trace -} - -// internalError represents an error generated inside this package. -type internalError string - -func (e internalError) Error() string { return "gcimporter: " + string(e) } - -func internalErrorf(format string, args ...interface{}) error { - return internalError(fmt.Sprintf(format, args...)) -} - -// BExportData returns binary export data for pkg. -// If no file set is provided, position info will be missing. -func BExportData(fset *token.FileSet, pkg *types.Package) (b []byte, err error) { - if !debug { - defer func() { - if e := recover(); e != nil { - if ierr, ok := e.(internalError); ok { - err = ierr - return - } - // Not an internal error; panic again. - panic(e) - } - }() - } - - p := exporter{ - fset: fset, - strIndex: map[string]int{"": 0}, // empty string is mapped to 0 - pkgIndex: make(map[*types.Package]int), - typIndex: make(map[types.Type]int), - posInfoFormat: true, // TODO(gri) might become a flag, eventually - } - - // write version info - // The version string must start with "version %d" where %d is the version - // number. Additional debugging information may follow after a blank; that - // text is ignored by the importer. - p.rawStringln(fmt.Sprintf("version %d", exportVersion)) - var debug string - if debugFormat { - debug = "debug" - } - p.rawStringln(debug) // cannot use p.bool since it's affected by debugFormat; also want to see this clearly - p.bool(trackAllTypes) - p.bool(p.posInfoFormat) - - // --- generic export data --- - - // populate type map with predeclared "known" types - for index, typ := range predeclared() { - p.typIndex[typ] = index - } - if len(p.typIndex) != len(predeclared()) { - return nil, internalError("duplicate entries in type map?") - } - - // write package data - p.pkg(pkg, true) - if trace { - p.tracef("\n") - } - - // write objects - objcount := 0 - scope := pkg.Scope() - for _, name := range scope.Names() { - if !ast.IsExported(name) { - continue - } - if trace { - p.tracef("\n") - } - p.obj(scope.Lookup(name)) - objcount++ - } - - // indicate end of list - if trace { - p.tracef("\n") - } - p.tag(endTag) - - // for self-verification only (redundant) - p.int(objcount) - - if trace { - p.tracef("\n") - } - - // --- end of export data --- - - return p.out.Bytes(), nil -} - -func (p *exporter) pkg(pkg *types.Package, emptypath bool) { - if pkg == nil { - panic(internalError("unexpected nil pkg")) - } - - // if we saw the package before, write its index (>= 0) - if i, ok := p.pkgIndex[pkg]; ok { - p.index('P', i) - return - } - - // otherwise, remember the package, write the package tag (< 0) and package data - if trace { - p.tracef("P%d = { ", len(p.pkgIndex)) - defer p.tracef("} ") - } - p.pkgIndex[pkg] = len(p.pkgIndex) - - p.tag(packageTag) - p.string(pkg.Name()) - if emptypath { - p.string("") - } else { - p.string(pkg.Path()) - } -} - -func (p *exporter) obj(obj types.Object) { - switch obj := obj.(type) { - case *types.Const: - p.tag(constTag) - p.pos(obj) - p.qualifiedName(obj) - p.typ(obj.Type()) - p.value(obj.Val()) - - case *types.TypeName: - if obj.IsAlias() { - p.tag(aliasTag) - p.pos(obj) - p.qualifiedName(obj) - } else { - p.tag(typeTag) - } - p.typ(obj.Type()) - - case *types.Var: - p.tag(varTag) - p.pos(obj) - p.qualifiedName(obj) - p.typ(obj.Type()) - - case *types.Func: - p.tag(funcTag) - p.pos(obj) - p.qualifiedName(obj) - sig := obj.Type().(*types.Signature) - p.paramList(sig.Params(), sig.Variadic()) - p.paramList(sig.Results(), false) - - default: - panic(internalErrorf("unexpected object %v (%T)", obj, obj)) - } -} - -func (p *exporter) pos(obj types.Object) { - if !p.posInfoFormat { - return - } - - file, line := p.fileLine(obj) - if file == p.prevFile { - // common case: write line delta - // delta == 0 means different file or no line change - delta := line - p.prevLine - p.int(delta) - if delta == 0 { - p.int(-1) // -1 means no file change - } - } else { - // different file - p.int(0) - // Encode filename as length of common prefix with previous - // filename, followed by (possibly empty) suffix. Filenames - // frequently share path prefixes, so this can save a lot - // of space and make export data size less dependent on file - // path length. The suffix is unlikely to be empty because - // file names tend to end in ".go". - n := commonPrefixLen(p.prevFile, file) - p.int(n) // n >= 0 - p.string(file[n:]) // write suffix only - p.prevFile = file - p.int(line) - } - p.prevLine = line -} - -func (p *exporter) fileLine(obj types.Object) (file string, line int) { - if p.fset != nil { - pos := p.fset.Position(obj.Pos()) - file = pos.Filename - line = pos.Line - } - return -} - -func commonPrefixLen(a, b string) int { - if len(a) > len(b) { - a, b = b, a - } - // len(a) <= len(b) - i := 0 - for i < len(a) && a[i] == b[i] { - i++ - } - return i -} - -func (p *exporter) qualifiedName(obj types.Object) { - p.string(obj.Name()) - p.pkg(obj.Pkg(), false) -} - -func (p *exporter) typ(t types.Type) { - if t == nil { - panic(internalError("nil type")) - } - - // Possible optimization: Anonymous pointer types *T where - // T is a named type are common. We could canonicalize all - // such types *T to a single type PT = *T. This would lead - // to at most one *T entry in typIndex, and all future *T's - // would be encoded as the respective index directly. Would - // save 1 byte (pointerTag) per *T and reduce the typIndex - // size (at the cost of a canonicalization map). We can do - // this later, without encoding format change. - - // if we saw the type before, write its index (>= 0) - if i, ok := p.typIndex[t]; ok { - p.index('T', i) - return - } - - // otherwise, remember the type, write the type tag (< 0) and type data - if trackAllTypes { - if trace { - p.tracef("T%d = {>\n", len(p.typIndex)) - defer p.tracef("<\n} ") - } - p.typIndex[t] = len(p.typIndex) - } - - switch t := t.(type) { - case *types.Named: - if !trackAllTypes { - // if we don't track all types, track named types now - p.typIndex[t] = len(p.typIndex) - } - - p.tag(namedTag) - p.pos(t.Obj()) - p.qualifiedName(t.Obj()) - p.typ(t.Underlying()) - if !types.IsInterface(t) { - p.assocMethods(t) - } - - case *types.Array: - p.tag(arrayTag) - p.int64(t.Len()) - p.typ(t.Elem()) - - case *types.Slice: - p.tag(sliceTag) - p.typ(t.Elem()) - - case *dddSlice: - p.tag(dddTag) - p.typ(t.elem) - - case *types.Struct: - p.tag(structTag) - p.fieldList(t) - - case *types.Pointer: - p.tag(pointerTag) - p.typ(t.Elem()) - - case *types.Signature: - p.tag(signatureTag) - p.paramList(t.Params(), t.Variadic()) - p.paramList(t.Results(), false) - - case *types.Interface: - p.tag(interfaceTag) - p.iface(t) - - case *types.Map: - p.tag(mapTag) - p.typ(t.Key()) - p.typ(t.Elem()) - - case *types.Chan: - p.tag(chanTag) - p.int(int(3 - t.Dir())) // hack - p.typ(t.Elem()) - - default: - panic(internalErrorf("unexpected type %T: %s", t, t)) - } -} - -func (p *exporter) assocMethods(named *types.Named) { - // Sort methods (for determinism). - var methods []*types.Func - for i := 0; i < named.NumMethods(); i++ { - methods = append(methods, named.Method(i)) - } - sort.Sort(methodsByName(methods)) - - p.int(len(methods)) - - if trace && methods != nil { - p.tracef("associated methods {>\n") - } - - for i, m := range methods { - if trace && i > 0 { - p.tracef("\n") - } - - p.pos(m) - name := m.Name() - p.string(name) - if !exported(name) { - p.pkg(m.Pkg(), false) - } - - sig := m.Type().(*types.Signature) - p.paramList(types.NewTuple(sig.Recv()), false) - p.paramList(sig.Params(), sig.Variadic()) - p.paramList(sig.Results(), false) - p.int(0) // dummy value for go:nointerface pragma - ignored by importer - } - - if trace && methods != nil { - p.tracef("<\n} ") - } -} - -type methodsByName []*types.Func - -func (x methodsByName) Len() int { return len(x) } -func (x methodsByName) Swap(i, j int) { x[i], x[j] = x[j], x[i] } -func (x methodsByName) Less(i, j int) bool { return x[i].Name() < x[j].Name() } - -func (p *exporter) fieldList(t *types.Struct) { - if trace && t.NumFields() > 0 { - p.tracef("fields {>\n") - defer p.tracef("<\n} ") - } - - p.int(t.NumFields()) - for i := 0; i < t.NumFields(); i++ { - if trace && i > 0 { - p.tracef("\n") - } - p.field(t.Field(i)) - p.string(t.Tag(i)) - } -} - -func (p *exporter) field(f *types.Var) { - if !f.IsField() { - panic(internalError("field expected")) - } - - p.pos(f) - p.fieldName(f) - p.typ(f.Type()) -} - -func (p *exporter) iface(t *types.Interface) { - // TODO(gri): enable importer to load embedded interfaces, - // then emit Embeddeds and ExplicitMethods separately here. - p.int(0) - - n := t.NumMethods() - if trace && n > 0 { - p.tracef("methods {>\n") - defer p.tracef("<\n} ") - } - p.int(n) - for i := 0; i < n; i++ { - if trace && i > 0 { - p.tracef("\n") - } - p.method(t.Method(i)) - } -} - -func (p *exporter) method(m *types.Func) { - sig := m.Type().(*types.Signature) - if sig.Recv() == nil { - panic(internalError("method expected")) - } - - p.pos(m) - p.string(m.Name()) - if m.Name() != "_" && !ast.IsExported(m.Name()) { - p.pkg(m.Pkg(), false) - } - - // interface method; no need to encode receiver. - p.paramList(sig.Params(), sig.Variadic()) - p.paramList(sig.Results(), false) -} - -func (p *exporter) fieldName(f *types.Var) { - name := f.Name() - - if f.Anonymous() { - // anonymous field - we distinguish between 3 cases: - // 1) field name matches base type name and is exported - // 2) field name matches base type name and is not exported - // 3) field name doesn't match base type name (alias name) - bname := basetypeName(f.Type()) - if name == bname { - if ast.IsExported(name) { - name = "" // 1) we don't need to know the field name or package - } else { - name = "?" // 2) use unexported name "?" to force package export - } - } else { - // 3) indicate alias and export name as is - // (this requires an extra "@" but this is a rare case) - p.string("@") - } - } - - p.string(name) - if name != "" && !ast.IsExported(name) { - p.pkg(f.Pkg(), false) - } -} - -func basetypeName(typ types.Type) string { - switch typ := deref(typ).(type) { - case *types.Basic: - return typ.Name() - case *types.Named: - return typ.Obj().Name() - default: - return "" // unnamed type - } -} - -func (p *exporter) paramList(params *types.Tuple, variadic bool) { - // use negative length to indicate unnamed parameters - // (look at the first parameter only since either all - // names are present or all are absent) - n := params.Len() - if n > 0 && params.At(0).Name() == "" { - n = -n - } - p.int(n) - for i := 0; i < params.Len(); i++ { - q := params.At(i) - t := q.Type() - if variadic && i == params.Len()-1 { - t = &dddSlice{t.(*types.Slice).Elem()} - } - p.typ(t) - if n > 0 { - name := q.Name() - p.string(name) - if name != "_" { - p.pkg(q.Pkg(), false) - } - } - p.string("") // no compiler-specific info - } -} - -func (p *exporter) value(x constant.Value) { - if trace { - p.tracef("= ") - } - - switch x.Kind() { - case constant.Bool: - tag := falseTag - if constant.BoolVal(x) { - tag = trueTag - } - p.tag(tag) - - case constant.Int: - if v, exact := constant.Int64Val(x); exact { - // common case: x fits into an int64 - use compact encoding - p.tag(int64Tag) - p.int64(v) - return - } - // uncommon case: large x - use float encoding - // (powers of 2 will be encoded efficiently with exponent) - p.tag(floatTag) - p.float(constant.ToFloat(x)) - - case constant.Float: - p.tag(floatTag) - p.float(x) - - case constant.Complex: - p.tag(complexTag) - p.float(constant.Real(x)) - p.float(constant.Imag(x)) - - case constant.String: - p.tag(stringTag) - p.string(constant.StringVal(x)) - - case constant.Unknown: - // package contains type errors - p.tag(unknownTag) - - default: - panic(internalErrorf("unexpected value %v (%T)", x, x)) - } -} - -func (p *exporter) float(x constant.Value) { - if x.Kind() != constant.Float { - panic(internalErrorf("unexpected constant %v, want float", x)) - } - // extract sign (there is no -0) - sign := constant.Sign(x) - if sign == 0 { - // x == 0 - p.int(0) - return - } - // x != 0 - - var f big.Float - if v, exact := constant.Float64Val(x); exact { - // float64 - f.SetFloat64(v) - } else if num, denom := constant.Num(x), constant.Denom(x); num.Kind() == constant.Int { - // TODO(gri): add big.Rat accessor to constant.Value. - r := valueToRat(num) - f.SetRat(r.Quo(r, valueToRat(denom))) - } else { - // Value too large to represent as a fraction => inaccessible. - // TODO(gri): add big.Float accessor to constant.Value. - f.SetFloat64(math.MaxFloat64) // FIXME - } - - // extract exponent such that 0.5 <= m < 1.0 - var m big.Float - exp := f.MantExp(&m) - - // extract mantissa as *big.Int - // - set exponent large enough so mant satisfies mant.IsInt() - // - get *big.Int from mant - m.SetMantExp(&m, int(m.MinPrec())) - mant, acc := m.Int(nil) - if acc != big.Exact { - panic(internalError("internal error")) - } - - p.int(sign) - p.int(exp) - p.string(string(mant.Bytes())) -} - -func valueToRat(x constant.Value) *big.Rat { - // Convert little-endian to big-endian. - // I can't believe this is necessary. - bytes := constant.Bytes(x) - for i := 0; i < len(bytes)/2; i++ { - bytes[i], bytes[len(bytes)-1-i] = bytes[len(bytes)-1-i], bytes[i] - } - return new(big.Rat).SetInt(new(big.Int).SetBytes(bytes)) -} - -func (p *exporter) bool(b bool) bool { - if trace { - p.tracef("[") - defer p.tracef("= %v] ", b) - } - - x := 0 - if b { - x = 1 - } - p.int(x) - return b -} - -// ---------------------------------------------------------------------------- -// Low-level encoders - -func (p *exporter) index(marker byte, index int) { - if index < 0 { - panic(internalError("invalid index < 0")) - } - if debugFormat { - p.marker('t') - } - if trace { - p.tracef("%c%d ", marker, index) - } - p.rawInt64(int64(index)) -} - -func (p *exporter) tag(tag int) { - if tag >= 0 { - panic(internalError("invalid tag >= 0")) - } - if debugFormat { - p.marker('t') - } - if trace { - p.tracef("%s ", tagString[-tag]) - } - p.rawInt64(int64(tag)) -} - -func (p *exporter) int(x int) { - p.int64(int64(x)) -} - -func (p *exporter) int64(x int64) { - if debugFormat { - p.marker('i') - } - if trace { - p.tracef("%d ", x) - } - p.rawInt64(x) -} - -func (p *exporter) string(s string) { - if debugFormat { - p.marker('s') - } - if trace { - p.tracef("%q ", s) - } - // if we saw the string before, write its index (>= 0) - // (the empty string is mapped to 0) - if i, ok := p.strIndex[s]; ok { - p.rawInt64(int64(i)) - return - } - // otherwise, remember string and write its negative length and bytes - p.strIndex[s] = len(p.strIndex) - p.rawInt64(-int64(len(s))) - for i := 0; i < len(s); i++ { - p.rawByte(s[i]) - } -} - -// marker emits a marker byte and position information which makes -// it easy for a reader to detect if it is "out of sync". Used for -// debugFormat format only. -func (p *exporter) marker(m byte) { - p.rawByte(m) - // Enable this for help tracking down the location - // of an incorrect marker when running in debugFormat. - if false && trace { - p.tracef("#%d ", p.written) - } - p.rawInt64(int64(p.written)) -} - -// rawInt64 should only be used by low-level encoders. -func (p *exporter) rawInt64(x int64) { - var tmp [binary.MaxVarintLen64]byte - n := binary.PutVarint(tmp[:], x) - for i := 0; i < n; i++ { - p.rawByte(tmp[i]) - } -} - -// rawStringln should only be used to emit the initial version string. -func (p *exporter) rawStringln(s string) { - for i := 0; i < len(s); i++ { - p.rawByte(s[i]) - } - p.rawByte('\n') -} - -// rawByte is the bottleneck interface to write to p.out. -// rawByte escapes b as follows (any encoding does that -// hides '$'): -// -// '$' => '|' 'S' -// '|' => '|' '|' -// -// Necessary so other tools can find the end of the -// export data by searching for "$$". -// rawByte should only be used by low-level encoders. -func (p *exporter) rawByte(b byte) { - switch b { - case '$': - // write '$' as '|' 'S' - b = 'S' - fallthrough - case '|': - // write '|' as '|' '|' - p.out.WriteByte('|') - p.written++ - } - p.out.WriteByte(b) - p.written++ -} - -// tracef is like fmt.Printf but it rewrites the format string -// to take care of indentation. -func (p *exporter) tracef(format string, args ...interface{}) { - if strings.ContainsAny(format, "<>\n") { - var buf bytes.Buffer - for i := 0; i < len(format); i++ { - // no need to deal with runes - ch := format[i] - switch ch { - case '>': - p.indent++ - continue - case '<': - p.indent-- - continue - } - buf.WriteByte(ch) - if ch == '\n' { - for j := p.indent; j > 0; j-- { - buf.WriteString(". ") - } - } - } - format = buf.String() - } - fmt.Printf(format, args...) -} - -// Debugging support. -// (tagString is only used when tracing is enabled) -var tagString = [...]string{ - // Packages - -packageTag: "package", - - // Types - -namedTag: "named type", - -arrayTag: "array", - -sliceTag: "slice", - -dddTag: "ddd", - -structTag: "struct", - -pointerTag: "pointer", - -signatureTag: "signature", - -interfaceTag: "interface", - -mapTag: "map", - -chanTag: "chan", - - // Values - -falseTag: "false", - -trueTag: "true", - -int64Tag: "int64", - -floatTag: "float", - -fractionTag: "fraction", - -complexTag: "complex", - -stringTag: "string", - -unknownTag: "unknown", - - // Type aliases - -aliasTag: "alias", -} diff --git a/vendor/golang.org/x/tools/go/internal/gcimporter/bimport.go b/vendor/golang.org/x/tools/go/internal/gcimporter/bimport.go deleted file mode 100644 index b85de0147..000000000 --- a/vendor/golang.org/x/tools/go/internal/gcimporter/bimport.go +++ /dev/null @@ -1,1053 +0,0 @@ -// Copyright 2015 The Go Authors. All rights reserved. -// Use of this source code is governed by a BSD-style -// license that can be found in the LICENSE file. - -// This file is a copy of $GOROOT/src/go/internal/gcimporter/bimport.go. - -package gcimporter - -import ( - "encoding/binary" - "fmt" - "go/constant" - "go/token" - "go/types" - "sort" - "strconv" - "strings" - "sync" - "unicode" - "unicode/utf8" -) - -type importer struct { - imports map[string]*types.Package - data []byte - importpath string - buf []byte // for reading strings - version int // export format version - - // object lists - strList []string // in order of appearance - pathList []string // in order of appearance - pkgList []*types.Package // in order of appearance - typList []types.Type // in order of appearance - interfaceList []*types.Interface // for delayed completion only - trackAllTypes bool - - // position encoding - posInfoFormat bool - prevFile string - prevLine int - fake fakeFileSet - - // debugging support - debugFormat bool - read int // bytes read -} - -// BImportData imports a package from the serialized package data -// and returns the number of bytes consumed and a reference to the package. -// If the export data version is not recognized or the format is otherwise -// compromised, an error is returned. -func BImportData(fset *token.FileSet, imports map[string]*types.Package, data []byte, path string) (_ int, pkg *types.Package, err error) { - // catch panics and return them as errors - const currentVersion = 6 - version := -1 // unknown version - defer func() { - if e := recover(); e != nil { - // Return a (possibly nil or incomplete) package unchanged (see #16088). - if version > currentVersion { - err = fmt.Errorf("cannot import %q (%v), export data is newer version - update tool", path, e) - } else { - err = fmt.Errorf("cannot import %q (%v), possibly version skew - reinstall package", path, e) - } - } - }() - - p := importer{ - imports: imports, - data: data, - importpath: path, - version: version, - strList: []string{""}, // empty string is mapped to 0 - pathList: []string{""}, // empty string is mapped to 0 - fake: fakeFileSet{ - fset: fset, - files: make(map[string]*fileInfo), - }, - } - defer p.fake.setLines() // set lines for files in fset - - // read version info - var versionstr string - if b := p.rawByte(); b == 'c' || b == 'd' { - // Go1.7 encoding; first byte encodes low-level - // encoding format (compact vs debug). - // For backward-compatibility only (avoid problems with - // old installed packages). Newly compiled packages use - // the extensible format string. - // TODO(gri) Remove this support eventually; after Go1.8. - if b == 'd' { - p.debugFormat = true - } - p.trackAllTypes = p.rawByte() == 'a' - p.posInfoFormat = p.int() != 0 - versionstr = p.string() - if versionstr == "v1" { - version = 0 - } - } else { - // Go1.8 extensible encoding - // read version string and extract version number (ignore anything after the version number) - versionstr = p.rawStringln(b) - if s := strings.SplitN(versionstr, " ", 3); len(s) >= 2 && s[0] == "version" { - if v, err := strconv.Atoi(s[1]); err == nil && v > 0 { - version = v - } - } - } - p.version = version - - // read version specific flags - extend as necessary - switch p.version { - // case currentVersion: - // ... - // fallthrough - case currentVersion, 5, 4, 3, 2, 1: - p.debugFormat = p.rawStringln(p.rawByte()) == "debug" - p.trackAllTypes = p.int() != 0 - p.posInfoFormat = p.int() != 0 - case 0: - // Go1.7 encoding format - nothing to do here - default: - errorf("unknown bexport format version %d (%q)", p.version, versionstr) - } - - // --- generic export data --- - - // populate typList with predeclared "known" types - p.typList = append(p.typList, predeclared()...) - - // read package data - pkg = p.pkg() - - // read objects of phase 1 only (see cmd/compile/internal/gc/bexport.go) - objcount := 0 - for { - tag := p.tagOrIndex() - if tag == endTag { - break - } - p.obj(tag) - objcount++ - } - - // self-verification - if count := p.int(); count != objcount { - errorf("got %d objects; want %d", objcount, count) - } - - // ignore compiler-specific import data - - // complete interfaces - // TODO(gri) re-investigate if we still need to do this in a delayed fashion - for _, typ := range p.interfaceList { - typ.Complete() - } - - // record all referenced packages as imports - list := append(([]*types.Package)(nil), p.pkgList[1:]...) - sort.Sort(byPath(list)) - pkg.SetImports(list) - - // package was imported completely and without errors - pkg.MarkComplete() - - return p.read, pkg, nil -} - -func errorf(format string, args ...interface{}) { - panic(fmt.Sprintf(format, args...)) -} - -func (p *importer) pkg() *types.Package { - // if the package was seen before, i is its index (>= 0) - i := p.tagOrIndex() - if i >= 0 { - return p.pkgList[i] - } - - // otherwise, i is the package tag (< 0) - if i != packageTag { - errorf("unexpected package tag %d version %d", i, p.version) - } - - // read package data - name := p.string() - var path string - if p.version >= 5 { - path = p.path() - } else { - path = p.string() - } - if p.version >= 6 { - p.int() // package height; unused by go/types - } - - // we should never see an empty package name - if name == "" { - errorf("empty package name in import") - } - - // an empty path denotes the package we are currently importing; - // it must be the first package we see - if (path == "") != (len(p.pkgList) == 0) { - errorf("package path %q for pkg index %d", path, len(p.pkgList)) - } - - // if the package was imported before, use that one; otherwise create a new one - if path == "" { - path = p.importpath - } - pkg := p.imports[path] - if pkg == nil { - pkg = types.NewPackage(path, name) - p.imports[path] = pkg - } else if pkg.Name() != name { - errorf("conflicting names %s and %s for package %q", pkg.Name(), name, path) - } - p.pkgList = append(p.pkgList, pkg) - - return pkg -} - -// objTag returns the tag value for each object kind. -func objTag(obj types.Object) int { - switch obj.(type) { - case *types.Const: - return constTag - case *types.TypeName: - return typeTag - case *types.Var: - return varTag - case *types.Func: - return funcTag - default: - errorf("unexpected object: %v (%T)", obj, obj) // panics - panic("unreachable") - } -} - -func sameObj(a, b types.Object) bool { - // Because unnamed types are not canonicalized, we cannot simply compare types for - // (pointer) identity. - // Ideally we'd check equality of constant values as well, but this is good enough. - return objTag(a) == objTag(b) && types.Identical(a.Type(), b.Type()) -} - -func (p *importer) declare(obj types.Object) { - pkg := obj.Pkg() - if alt := pkg.Scope().Insert(obj); alt != nil { - // This can only trigger if we import a (non-type) object a second time. - // Excluding type aliases, this cannot happen because 1) we only import a package - // once; and b) we ignore compiler-specific export data which may contain - // functions whose inlined function bodies refer to other functions that - // were already imported. - // However, type aliases require reexporting the original type, so we need - // to allow it (see also the comment in cmd/compile/internal/gc/bimport.go, - // method importer.obj, switch case importing functions). - // TODO(gri) review/update this comment once the gc compiler handles type aliases. - if !sameObj(obj, alt) { - errorf("inconsistent import:\n\t%v\npreviously imported as:\n\t%v\n", obj, alt) - } - } -} - -func (p *importer) obj(tag int) { - switch tag { - case constTag: - pos := p.pos() - pkg, name := p.qualifiedName() - typ := p.typ(nil, nil) - val := p.value() - p.declare(types.NewConst(pos, pkg, name, typ, val)) - - case aliasTag: - // TODO(gri) verify type alias hookup is correct - pos := p.pos() - pkg, name := p.qualifiedName() - typ := p.typ(nil, nil) - p.declare(types.NewTypeName(pos, pkg, name, typ)) - - case typeTag: - p.typ(nil, nil) - - case varTag: - pos := p.pos() - pkg, name := p.qualifiedName() - typ := p.typ(nil, nil) - p.declare(types.NewVar(pos, pkg, name, typ)) - - case funcTag: - pos := p.pos() - pkg, name := p.qualifiedName() - params, isddd := p.paramList() - result, _ := p.paramList() - sig := types.NewSignature(nil, params, result, isddd) - p.declare(types.NewFunc(pos, pkg, name, sig)) - - default: - errorf("unexpected object tag %d", tag) - } -} - -const deltaNewFile = -64 // see cmd/compile/internal/gc/bexport.go - -func (p *importer) pos() token.Pos { - if !p.posInfoFormat { - return token.NoPos - } - - file := p.prevFile - line := p.prevLine - delta := p.int() - line += delta - if p.version >= 5 { - if delta == deltaNewFile { - if n := p.int(); n >= 0 { - // file changed - file = p.path() - line = n - } - } - } else { - if delta == 0 { - if n := p.int(); n >= 0 { - // file changed - file = p.prevFile[:n] + p.string() - line = p.int() - } - } - } - p.prevFile = file - p.prevLine = line - - return p.fake.pos(file, line, 0) -} - -// Synthesize a token.Pos -type fakeFileSet struct { - fset *token.FileSet - files map[string]*fileInfo -} - -type fileInfo struct { - file *token.File - lastline int -} - -const maxlines = 64 * 1024 - -func (s *fakeFileSet) pos(file string, line, column int) token.Pos { - // TODO(mdempsky): Make use of column. - - // Since we don't know the set of needed file positions, we reserve maxlines - // positions per file. We delay calling token.File.SetLines until all - // positions have been calculated (by way of fakeFileSet.setLines), so that - // we can avoid setting unnecessary lines. See also golang/go#46586. - f := s.files[file] - if f == nil { - f = &fileInfo{file: s.fset.AddFile(file, -1, maxlines)} - s.files[file] = f - } - if line > maxlines { - line = 1 - } - if line > f.lastline { - f.lastline = line - } - - // Return a fake position assuming that f.file consists only of newlines. - return token.Pos(f.file.Base() + line - 1) -} - -func (s *fakeFileSet) setLines() { - fakeLinesOnce.Do(func() { - fakeLines = make([]int, maxlines) - for i := range fakeLines { - fakeLines[i] = i - } - }) - for _, f := range s.files { - f.file.SetLines(fakeLines[:f.lastline]) - } -} - -var ( - fakeLines []int - fakeLinesOnce sync.Once -) - -func (p *importer) qualifiedName() (pkg *types.Package, name string) { - name = p.string() - pkg = p.pkg() - return -} - -func (p *importer) record(t types.Type) { - p.typList = append(p.typList, t) -} - -// A dddSlice is a types.Type representing ...T parameters. -// It only appears for parameter types and does not escape -// the importer. -type dddSlice struct { - elem types.Type -} - -func (t *dddSlice) Underlying() types.Type { return t } -func (t *dddSlice) String() string { return "..." + t.elem.String() } - -// parent is the package which declared the type; parent == nil means -// the package currently imported. The parent package is needed for -// exported struct fields and interface methods which don't contain -// explicit package information in the export data. -// -// A non-nil tname is used as the "owner" of the result type; i.e., -// the result type is the underlying type of tname. tname is used -// to give interface methods a named receiver type where possible. -func (p *importer) typ(parent *types.Package, tname *types.Named) types.Type { - // if the type was seen before, i is its index (>= 0) - i := p.tagOrIndex() - if i >= 0 { - return p.typList[i] - } - - // otherwise, i is the type tag (< 0) - switch i { - case namedTag: - // read type object - pos := p.pos() - parent, name := p.qualifiedName() - scope := parent.Scope() - obj := scope.Lookup(name) - - // if the object doesn't exist yet, create and insert it - if obj == nil { - obj = types.NewTypeName(pos, parent, name, nil) - scope.Insert(obj) - } - - if _, ok := obj.(*types.TypeName); !ok { - errorf("pkg = %s, name = %s => %s", parent, name, obj) - } - - // associate new named type with obj if it doesn't exist yet - t0 := types.NewNamed(obj.(*types.TypeName), nil, nil) - - // but record the existing type, if any - tname := obj.Type().(*types.Named) // tname is either t0 or the existing type - p.record(tname) - - // read underlying type - t0.SetUnderlying(p.typ(parent, t0)) - - // interfaces don't have associated methods - if types.IsInterface(t0) { - return tname - } - - // read associated methods - for i := p.int(); i > 0; i-- { - // TODO(gri) replace this with something closer to fieldName - pos := p.pos() - name := p.string() - if !exported(name) { - p.pkg() - } - - recv, _ := p.paramList() // TODO(gri) do we need a full param list for the receiver? - params, isddd := p.paramList() - result, _ := p.paramList() - p.int() // go:nointerface pragma - discarded - - sig := types.NewSignature(recv.At(0), params, result, isddd) - t0.AddMethod(types.NewFunc(pos, parent, name, sig)) - } - - return tname - - case arrayTag: - t := new(types.Array) - if p.trackAllTypes { - p.record(t) - } - - n := p.int64() - *t = *types.NewArray(p.typ(parent, nil), n) - return t - - case sliceTag: - t := new(types.Slice) - if p.trackAllTypes { - p.record(t) - } - - *t = *types.NewSlice(p.typ(parent, nil)) - return t - - case dddTag: - t := new(dddSlice) - if p.trackAllTypes { - p.record(t) - } - - t.elem = p.typ(parent, nil) - return t - - case structTag: - t := new(types.Struct) - if p.trackAllTypes { - p.record(t) - } - - *t = *types.NewStruct(p.fieldList(parent)) - return t - - case pointerTag: - t := new(types.Pointer) - if p.trackAllTypes { - p.record(t) - } - - *t = *types.NewPointer(p.typ(parent, nil)) - return t - - case signatureTag: - t := new(types.Signature) - if p.trackAllTypes { - p.record(t) - } - - params, isddd := p.paramList() - result, _ := p.paramList() - *t = *types.NewSignature(nil, params, result, isddd) - return t - - case interfaceTag: - // Create a dummy entry in the type list. This is safe because we - // cannot expect the interface type to appear in a cycle, as any - // such cycle must contain a named type which would have been - // first defined earlier. - // TODO(gri) Is this still true now that we have type aliases? - // See issue #23225. - n := len(p.typList) - if p.trackAllTypes { - p.record(nil) - } - - var embeddeds []types.Type - for n := p.int(); n > 0; n-- { - p.pos() - embeddeds = append(embeddeds, p.typ(parent, nil)) - } - - t := newInterface(p.methodList(parent, tname), embeddeds) - p.interfaceList = append(p.interfaceList, t) - if p.trackAllTypes { - p.typList[n] = t - } - return t - - case mapTag: - t := new(types.Map) - if p.trackAllTypes { - p.record(t) - } - - key := p.typ(parent, nil) - val := p.typ(parent, nil) - *t = *types.NewMap(key, val) - return t - - case chanTag: - t := new(types.Chan) - if p.trackAllTypes { - p.record(t) - } - - dir := chanDir(p.int()) - val := p.typ(parent, nil) - *t = *types.NewChan(dir, val) - return t - - default: - errorf("unexpected type tag %d", i) // panics - panic("unreachable") - } -} - -func chanDir(d int) types.ChanDir { - // tag values must match the constants in cmd/compile/internal/gc/go.go - switch d { - case 1 /* Crecv */ : - return types.RecvOnly - case 2 /* Csend */ : - return types.SendOnly - case 3 /* Cboth */ : - return types.SendRecv - default: - errorf("unexpected channel dir %d", d) - return 0 - } -} - -func (p *importer) fieldList(parent *types.Package) (fields []*types.Var, tags []string) { - if n := p.int(); n > 0 { - fields = make([]*types.Var, n) - tags = make([]string, n) - for i := range fields { - fields[i], tags[i] = p.field(parent) - } - } - return -} - -func (p *importer) field(parent *types.Package) (*types.Var, string) { - pos := p.pos() - pkg, name, alias := p.fieldName(parent) - typ := p.typ(parent, nil) - tag := p.string() - - anonymous := false - if name == "" { - // anonymous field - typ must be T or *T and T must be a type name - switch typ := deref(typ).(type) { - case *types.Basic: // basic types are named types - pkg = nil // // objects defined in Universe scope have no package - name = typ.Name() - case *types.Named: - name = typ.Obj().Name() - default: - errorf("named base type expected") - } - anonymous = true - } else if alias { - // anonymous field: we have an explicit name because it's an alias - anonymous = true - } - - return types.NewField(pos, pkg, name, typ, anonymous), tag -} - -func (p *importer) methodList(parent *types.Package, baseType *types.Named) (methods []*types.Func) { - if n := p.int(); n > 0 { - methods = make([]*types.Func, n) - for i := range methods { - methods[i] = p.method(parent, baseType) - } - } - return -} - -func (p *importer) method(parent *types.Package, baseType *types.Named) *types.Func { - pos := p.pos() - pkg, name, _ := p.fieldName(parent) - // If we don't have a baseType, use a nil receiver. - // A receiver using the actual interface type (which - // we don't know yet) will be filled in when we call - // types.Interface.Complete. - var recv *types.Var - if baseType != nil { - recv = types.NewVar(token.NoPos, parent, "", baseType) - } - params, isddd := p.paramList() - result, _ := p.paramList() - sig := types.NewSignature(recv, params, result, isddd) - return types.NewFunc(pos, pkg, name, sig) -} - -func (p *importer) fieldName(parent *types.Package) (pkg *types.Package, name string, alias bool) { - name = p.string() - pkg = parent - if pkg == nil { - // use the imported package instead - pkg = p.pkgList[0] - } - if p.version == 0 && name == "_" { - // version 0 didn't export a package for _ fields - return - } - switch name { - case "": - // 1) field name matches base type name and is exported: nothing to do - case "?": - // 2) field name matches base type name and is not exported: need package - name = "" - pkg = p.pkg() - case "@": - // 3) field name doesn't match type name (alias) - name = p.string() - alias = true - fallthrough - default: - if !exported(name) { - pkg = p.pkg() - } - } - return -} - -func (p *importer) paramList() (*types.Tuple, bool) { - n := p.int() - if n == 0 { - return nil, false - } - // negative length indicates unnamed parameters - named := true - if n < 0 { - n = -n - named = false - } - // n > 0 - params := make([]*types.Var, n) - isddd := false - for i := range params { - params[i], isddd = p.param(named) - } - return types.NewTuple(params...), isddd -} - -func (p *importer) param(named bool) (*types.Var, bool) { - t := p.typ(nil, nil) - td, isddd := t.(*dddSlice) - if isddd { - t = types.NewSlice(td.elem) - } - - var pkg *types.Package - var name string - if named { - name = p.string() - if name == "" { - errorf("expected named parameter") - } - if name != "_" { - pkg = p.pkg() - } - if i := strings.Index(name, "·"); i > 0 { - name = name[:i] // cut off gc-specific parameter numbering - } - } - - // read and discard compiler-specific info - p.string() - - return types.NewVar(token.NoPos, pkg, name, t), isddd -} - -func exported(name string) bool { - ch, _ := utf8.DecodeRuneInString(name) - return unicode.IsUpper(ch) -} - -func (p *importer) value() constant.Value { - switch tag := p.tagOrIndex(); tag { - case falseTag: - return constant.MakeBool(false) - case trueTag: - return constant.MakeBool(true) - case int64Tag: - return constant.MakeInt64(p.int64()) - case floatTag: - return p.float() - case complexTag: - re := p.float() - im := p.float() - return constant.BinaryOp(re, token.ADD, constant.MakeImag(im)) - case stringTag: - return constant.MakeString(p.string()) - case unknownTag: - return constant.MakeUnknown() - default: - errorf("unexpected value tag %d", tag) // panics - panic("unreachable") - } -} - -func (p *importer) float() constant.Value { - sign := p.int() - if sign == 0 { - return constant.MakeInt64(0) - } - - exp := p.int() - mant := []byte(p.string()) // big endian - - // remove leading 0's if any - for len(mant) > 0 && mant[0] == 0 { - mant = mant[1:] - } - - // convert to little endian - // TODO(gri) go/constant should have a more direct conversion function - // (e.g., once it supports a big.Float based implementation) - for i, j := 0, len(mant)-1; i < j; i, j = i+1, j-1 { - mant[i], mant[j] = mant[j], mant[i] - } - - // adjust exponent (constant.MakeFromBytes creates an integer value, - // but mant represents the mantissa bits such that 0.5 <= mant < 1.0) - exp -= len(mant) << 3 - if len(mant) > 0 { - for msd := mant[len(mant)-1]; msd&0x80 == 0; msd <<= 1 { - exp++ - } - } - - x := constant.MakeFromBytes(mant) - switch { - case exp < 0: - d := constant.Shift(constant.MakeInt64(1), token.SHL, uint(-exp)) - x = constant.BinaryOp(x, token.QUO, d) - case exp > 0: - x = constant.Shift(x, token.SHL, uint(exp)) - } - - if sign < 0 { - x = constant.UnaryOp(token.SUB, x, 0) - } - return x -} - -// ---------------------------------------------------------------------------- -// Low-level decoders - -func (p *importer) tagOrIndex() int { - if p.debugFormat { - p.marker('t') - } - - return int(p.rawInt64()) -} - -func (p *importer) int() int { - x := p.int64() - if int64(int(x)) != x { - errorf("exported integer too large") - } - return int(x) -} - -func (p *importer) int64() int64 { - if p.debugFormat { - p.marker('i') - } - - return p.rawInt64() -} - -func (p *importer) path() string { - if p.debugFormat { - p.marker('p') - } - // if the path was seen before, i is its index (>= 0) - // (the empty string is at index 0) - i := p.rawInt64() - if i >= 0 { - return p.pathList[i] - } - // otherwise, i is the negative path length (< 0) - a := make([]string, -i) - for n := range a { - a[n] = p.string() - } - s := strings.Join(a, "/") - p.pathList = append(p.pathList, s) - return s -} - -func (p *importer) string() string { - if p.debugFormat { - p.marker('s') - } - // if the string was seen before, i is its index (>= 0) - // (the empty string is at index 0) - i := p.rawInt64() - if i >= 0 { - return p.strList[i] - } - // otherwise, i is the negative string length (< 0) - if n := int(-i); n <= cap(p.buf) { - p.buf = p.buf[:n] - } else { - p.buf = make([]byte, n) - } - for i := range p.buf { - p.buf[i] = p.rawByte() - } - s := string(p.buf) - p.strList = append(p.strList, s) - return s -} - -func (p *importer) marker(want byte) { - if got := p.rawByte(); got != want { - errorf("incorrect marker: got %c; want %c (pos = %d)", got, want, p.read) - } - - pos := p.read - if n := int(p.rawInt64()); n != pos { - errorf("incorrect position: got %d; want %d", n, pos) - } -} - -// rawInt64 should only be used by low-level decoders. -func (p *importer) rawInt64() int64 { - i, err := binary.ReadVarint(p) - if err != nil { - errorf("read error: %v", err) - } - return i -} - -// rawStringln should only be used to read the initial version string. -func (p *importer) rawStringln(b byte) string { - p.buf = p.buf[:0] - for b != '\n' { - p.buf = append(p.buf, b) - b = p.rawByte() - } - return string(p.buf) -} - -// needed for binary.ReadVarint in rawInt64 -func (p *importer) ReadByte() (byte, error) { - return p.rawByte(), nil -} - -// byte is the bottleneck interface for reading p.data. -// It unescapes '|' 'S' to '$' and '|' '|' to '|'. -// rawByte should only be used by low-level decoders. -func (p *importer) rawByte() byte { - b := p.data[0] - r := 1 - if b == '|' { - b = p.data[1] - r = 2 - switch b { - case 'S': - b = '$' - case '|': - // nothing to do - default: - errorf("unexpected escape sequence in export data") - } - } - p.data = p.data[r:] - p.read += r - return b - -} - -// ---------------------------------------------------------------------------- -// Export format - -// Tags. Must be < 0. -const ( - // Objects - packageTag = -(iota + 1) - constTag - typeTag - varTag - funcTag - endTag - - // Types - namedTag - arrayTag - sliceTag - dddTag - structTag - pointerTag - signatureTag - interfaceTag - mapTag - chanTag - - // Values - falseTag - trueTag - int64Tag - floatTag - fractionTag // not used by gc - complexTag - stringTag - nilTag // only used by gc (appears in exported inlined function bodies) - unknownTag // not used by gc (only appears in packages with errors) - - // Type aliases - aliasTag -) - -var predeclOnce sync.Once -var predecl []types.Type // initialized lazily - -func predeclared() []types.Type { - predeclOnce.Do(func() { - // initialize lazily to be sure that all - // elements have been initialized before - predecl = []types.Type{ // basic types - types.Typ[types.Bool], - types.Typ[types.Int], - types.Typ[types.Int8], - types.Typ[types.Int16], - types.Typ[types.Int32], - types.Typ[types.Int64], - types.Typ[types.Uint], - types.Typ[types.Uint8], - types.Typ[types.Uint16], - types.Typ[types.Uint32], - types.Typ[types.Uint64], - types.Typ[types.Uintptr], - types.Typ[types.Float32], - types.Typ[types.Float64], - types.Typ[types.Complex64], - types.Typ[types.Complex128], - types.Typ[types.String], - - // basic type aliases - types.Universe.Lookup("byte").Type(), - types.Universe.Lookup("rune").Type(), - - // error - types.Universe.Lookup("error").Type(), - - // untyped types - types.Typ[types.UntypedBool], - types.Typ[types.UntypedInt], - types.Typ[types.UntypedRune], - types.Typ[types.UntypedFloat], - types.Typ[types.UntypedComplex], - types.Typ[types.UntypedString], - types.Typ[types.UntypedNil], - - // package unsafe - types.Typ[types.UnsafePointer], - - // invalid type - types.Typ[types.Invalid], // only appears in packages with errors - - // used internally by gc; never used by this package or in .a files - anyType{}, - } - predecl = append(predecl, additionalPredeclared()...) - }) - return predecl -} - -type anyType struct{} - -func (t anyType) Underlying() types.Type { return t } -func (t anyType) String() string { return "any" } diff --git a/vendor/golang.org/x/tools/go/internal/gcimporter/exportdata.go b/vendor/golang.org/x/tools/go/internal/gcimporter/exportdata.go deleted file mode 100644 index f6437feb1..000000000 --- a/vendor/golang.org/x/tools/go/internal/gcimporter/exportdata.go +++ /dev/null @@ -1,99 +0,0 @@ -// Copyright 2011 The Go Authors. All rights reserved. -// Use of this source code is governed by a BSD-style -// license that can be found in the LICENSE file. - -// This file is a copy of $GOROOT/src/go/internal/gcimporter/exportdata.go. - -// This file implements FindExportData. - -package gcimporter - -import ( - "bufio" - "fmt" - "io" - "strconv" - "strings" -) - -func readGopackHeader(r *bufio.Reader) (name string, size int64, err error) { - // See $GOROOT/include/ar.h. - hdr := make([]byte, 16+12+6+6+8+10+2) - _, err = io.ReadFull(r, hdr) - if err != nil { - return - } - // leave for debugging - if false { - fmt.Printf("header: %s", hdr) - } - s := strings.TrimSpace(string(hdr[16+12+6+6+8:][:10])) - length, err := strconv.Atoi(s) - size = int64(length) - if err != nil || hdr[len(hdr)-2] != '`' || hdr[len(hdr)-1] != '\n' { - err = fmt.Errorf("invalid archive header") - return - } - name = strings.TrimSpace(string(hdr[:16])) - return -} - -// FindExportData positions the reader r at the beginning of the -// export data section of an underlying GC-created object/archive -// file by reading from it. The reader must be positioned at the -// start of the file before calling this function. The hdr result -// is the string before the export data, either "$$" or "$$B". -// The size result is the length of the export data in bytes, or -1 if not known. -func FindExportData(r *bufio.Reader) (hdr string, size int64, err error) { - // Read first line to make sure this is an object file. - line, err := r.ReadSlice('\n') - if err != nil { - err = fmt.Errorf("can't find export data (%v)", err) - return - } - - if string(line) == "!<arch>\n" { - // Archive file. Scan to __.PKGDEF. - var name string - if name, size, err = readGopackHeader(r); err != nil { - return - } - - // First entry should be __.PKGDEF. - if name != "__.PKGDEF" { - err = fmt.Errorf("go archive is missing __.PKGDEF") - return - } - - // Read first line of __.PKGDEF data, so that line - // is once again the first line of the input. - if line, err = r.ReadSlice('\n'); err != nil { - err = fmt.Errorf("can't find export data (%v)", err) - return - } - size -= int64(len(line)) - } - - // Now at __.PKGDEF in archive or still at beginning of file. - // Either way, line should begin with "go object ". - if !strings.HasPrefix(string(line), "go object ") { - err = fmt.Errorf("not a Go object file") - return - } - - // Skip over object header to export data. - // Begins after first line starting with $$. - for line[0] != '$' { - if line, err = r.ReadSlice('\n'); err != nil { - err = fmt.Errorf("can't find export data (%v)", err) - return - } - size -= int64(len(line)) - } - hdr = string(line) - if size < 0 { - size = -1 - } - - return -} diff --git a/vendor/golang.org/x/tools/go/internal/gcimporter/gcimporter.go b/vendor/golang.org/x/tools/go/internal/gcimporter/gcimporter.go deleted file mode 100644 index 3ab66830d..000000000 --- a/vendor/golang.org/x/tools/go/internal/gcimporter/gcimporter.go +++ /dev/null @@ -1,1084 +0,0 @@ -// Copyright 2011 The Go Authors. All rights reserved. -// Use of this source code is governed by a BSD-style -// license that can be found in the LICENSE file. - -// This file is a modified copy of $GOROOT/src/go/internal/gcimporter/gcimporter.go, -// but it also contains the original source-based importer code for Go1.6. -// Once we stop supporting 1.6, we can remove that code. - -// Package gcimporter provides various functions for reading -// gc-generated object files that can be used to implement the -// Importer interface defined by the Go 1.5 standard library package. -package gcimporter // import "golang.org/x/tools/go/internal/gcimporter" - -import ( - "bufio" - "errors" - "fmt" - "go/build" - "go/constant" - "go/token" - "go/types" - "io" - "io/ioutil" - "os" - "path/filepath" - "sort" - "strconv" - "strings" - "text/scanner" -) - -const ( - // Enable debug during development: it adds some additional checks, and - // prevents errors from being recovered. - debug = false - - // If trace is set, debugging output is printed to std out. - trace = false -) - -var pkgExts = [...]string{".a", ".o"} - -// FindPkg returns the filename and unique package id for an import -// path based on package information provided by build.Import (using -// the build.Default build.Context). A relative srcDir is interpreted -// relative to the current working directory. -// If no file was found, an empty filename is returned. -// -func FindPkg(path, srcDir string) (filename, id string) { - if path == "" { - return - } - - var noext string - switch { - default: - // "x" -> "$GOPATH/pkg/$GOOS_$GOARCH/x.ext", "x" - // Don't require the source files to be present. - if abs, err := filepath.Abs(srcDir); err == nil { // see issue 14282 - srcDir = abs - } - bp, _ := build.Import(path, srcDir, build.FindOnly|build.AllowBinary) - if bp.PkgObj == "" { - id = path // make sure we have an id to print in error message - return - } - noext = strings.TrimSuffix(bp.PkgObj, ".a") - id = bp.ImportPath - - case build.IsLocalImport(path): - // "./x" -> "/this/directory/x.ext", "/this/directory/x" - noext = filepath.Join(srcDir, path) - id = noext - - case filepath.IsAbs(path): - // for completeness only - go/build.Import - // does not support absolute imports - // "/x" -> "/x.ext", "/x" - noext = path - id = path - } - - if false { // for debugging - if path != id { - fmt.Printf("%s -> %s\n", path, id) - } - } - - // try extensions - for _, ext := range pkgExts { - filename = noext + ext - if f, err := os.Stat(filename); err == nil && !f.IsDir() { - return - } - } - - filename = "" // not found - return -} - -// ImportData imports a package by reading the gc-generated export data, -// adds the corresponding package object to the packages map indexed by id, -// and returns the object. -// -// The packages map must contains all packages already imported. The data -// reader position must be the beginning of the export data section. The -// filename is only used in error messages. -// -// If packages[id] contains the completely imported package, that package -// can be used directly, and there is no need to call this function (but -// there is also no harm but for extra time used). -// -func ImportData(packages map[string]*types.Package, filename, id string, data io.Reader) (pkg *types.Package, err error) { - // support for parser error handling - defer func() { - switch r := recover().(type) { - case nil: - // nothing to do - case importError: - err = r - default: - panic(r) // internal error - } - }() - - var p parser - p.init(filename, id, data, packages) - pkg = p.parseExport() - - return -} - -// Import imports a gc-generated package given its import path and srcDir, adds -// the corresponding package object to the packages map, and returns the object. -// The packages map must contain all packages already imported. -// -func Import(packages map[string]*types.Package, path, srcDir string, lookup func(path string) (io.ReadCloser, error)) (pkg *types.Package, err error) { - var rc io.ReadCloser - var filename, id string - if lookup != nil { - // With custom lookup specified, assume that caller has - // converted path to a canonical import path for use in the map. - if path == "unsafe" { - return types.Unsafe, nil - } - id = path - - // No need to re-import if the package was imported completely before. - if pkg = packages[id]; pkg != nil && pkg.Complete() { - return - } - f, err := lookup(path) - if err != nil { - return nil, err - } - rc = f - } else { - filename, id = FindPkg(path, srcDir) - if filename == "" { - if path == "unsafe" { - return types.Unsafe, nil - } - return nil, fmt.Errorf("can't find import: %q", id) - } - - // no need to re-import if the package was imported completely before - if pkg = packages[id]; pkg != nil && pkg.Complete() { - return - } - - // open file - f, err := os.Open(filename) - if err != nil { - return nil, err - } - defer func() { - if err != nil { - // add file name to error - err = fmt.Errorf("%s: %v", filename, err) - } - }() - rc = f - } - defer rc.Close() - - var hdr string - buf := bufio.NewReader(rc) - if hdr, _, err = FindExportData(buf); err != nil { - return - } - - switch hdr { - case "$$\n": - // Work-around if we don't have a filename; happens only if lookup != nil. - // Either way, the filename is only needed for importer error messages, so - // this is fine. - if filename == "" { - filename = path - } - return ImportData(packages, filename, id, buf) - - case "$$B\n": - var data []byte - data, err = ioutil.ReadAll(buf) - if err != nil { - break - } - - // TODO(gri): allow clients of go/importer to provide a FileSet. - // Or, define a new standard go/types/gcexportdata package. - fset := token.NewFileSet() - - // The indexed export format starts with an 'i'; the older - // binary export format starts with a 'c', 'd', or 'v' - // (from "version"). Select appropriate importer. - if len(data) > 0 && data[0] == 'i' { - _, pkg, err = IImportData(fset, packages, data[1:], id) - } else { - _, pkg, err = BImportData(fset, packages, data, id) - } - - default: - err = fmt.Errorf("unknown export data header: %q", hdr) - } - - return -} - -// ---------------------------------------------------------------------------- -// Parser - -// TODO(gri) Imported objects don't have position information. -// Ideally use the debug table line info; alternatively -// create some fake position (or the position of the -// import). That way error messages referring to imported -// objects can print meaningful information. - -// parser parses the exports inside a gc compiler-produced -// object/archive file and populates its scope with the results. -type parser struct { - scanner scanner.Scanner - tok rune // current token - lit string // literal string; only valid for Ident, Int, String tokens - id string // package id of imported package - sharedPkgs map[string]*types.Package // package id -> package object (across importer) - localPkgs map[string]*types.Package // package id -> package object (just this package) -} - -func (p *parser) init(filename, id string, src io.Reader, packages map[string]*types.Package) { - p.scanner.Init(src) - p.scanner.Error = func(_ *scanner.Scanner, msg string) { p.error(msg) } - p.scanner.Mode = scanner.ScanIdents | scanner.ScanInts | scanner.ScanChars | scanner.ScanStrings | scanner.ScanComments | scanner.SkipComments - p.scanner.Whitespace = 1<<'\t' | 1<<' ' - p.scanner.Filename = filename // for good error messages - p.next() - p.id = id - p.sharedPkgs = packages - if debug { - // check consistency of packages map - for _, pkg := range packages { - if pkg.Name() == "" { - fmt.Printf("no package name for %s\n", pkg.Path()) - } - } - } -} - -func (p *parser) next() { - p.tok = p.scanner.Scan() - switch p.tok { - case scanner.Ident, scanner.Int, scanner.Char, scanner.String, '·': - p.lit = p.scanner.TokenText() - default: - p.lit = "" - } - if debug { - fmt.Printf("%s: %q -> %q\n", scanner.TokenString(p.tok), p.scanner.TokenText(), p.lit) - } -} - -func declTypeName(pkg *types.Package, name string) *types.TypeName { - scope := pkg.Scope() - if obj := scope.Lookup(name); obj != nil { - return obj.(*types.TypeName) - } - obj := types.NewTypeName(token.NoPos, pkg, name, nil) - // a named type may be referred to before the underlying type - // is known - set it up - types.NewNamed(obj, nil, nil) - scope.Insert(obj) - return obj -} - -// ---------------------------------------------------------------------------- -// Error handling - -// Internal errors are boxed as importErrors. -type importError struct { - pos scanner.Position - err error -} - -func (e importError) Error() string { - return fmt.Sprintf("import error %s (byte offset = %d): %s", e.pos, e.pos.Offset, e.err) -} - -func (p *parser) error(err interface{}) { - if s, ok := err.(string); ok { - err = errors.New(s) - } - // panic with a runtime.Error if err is not an error - panic(importError{p.scanner.Pos(), err.(error)}) -} - -func (p *parser) errorf(format string, args ...interface{}) { - p.error(fmt.Sprintf(format, args...)) -} - -func (p *parser) expect(tok rune) string { - lit := p.lit - if p.tok != tok { - p.errorf("expected %s, got %s (%s)", scanner.TokenString(tok), scanner.TokenString(p.tok), lit) - } - p.next() - return lit -} - -func (p *parser) expectSpecial(tok string) { - sep := 'x' // not white space - i := 0 - for i < len(tok) && p.tok == rune(tok[i]) && sep > ' ' { - sep = p.scanner.Peek() // if sep <= ' ', there is white space before the next token - p.next() - i++ - } - if i < len(tok) { - p.errorf("expected %q, got %q", tok, tok[0:i]) - } -} - -func (p *parser) expectKeyword(keyword string) { - lit := p.expect(scanner.Ident) - if lit != keyword { - p.errorf("expected keyword %s, got %q", keyword, lit) - } -} - -// ---------------------------------------------------------------------------- -// Qualified and unqualified names - -// PackageId = string_lit . -// -func (p *parser) parsePackageID() string { - id, err := strconv.Unquote(p.expect(scanner.String)) - if err != nil { - p.error(err) - } - // id == "" stands for the imported package id - // (only known at time of package installation) - if id == "" { - id = p.id - } - return id -} - -// PackageName = ident . -// -func (p *parser) parsePackageName() string { - return p.expect(scanner.Ident) -} - -// dotIdentifier = ( ident | '·' ) { ident | int | '·' } . -func (p *parser) parseDotIdent() string { - ident := "" - if p.tok != scanner.Int { - sep := 'x' // not white space - for (p.tok == scanner.Ident || p.tok == scanner.Int || p.tok == '·') && sep > ' ' { - ident += p.lit - sep = p.scanner.Peek() // if sep <= ' ', there is white space before the next token - p.next() - } - } - if ident == "" { - p.expect(scanner.Ident) // use expect() for error handling - } - return ident -} - -// QualifiedName = "@" PackageId "." ( "?" | dotIdentifier ) . -// -func (p *parser) parseQualifiedName() (id, name string) { - p.expect('@') - id = p.parsePackageID() - p.expect('.') - // Per rev f280b8a485fd (10/2/2013), qualified names may be used for anonymous fields. - if p.tok == '?' { - p.next() - } else { - name = p.parseDotIdent() - } - return -} - -// getPkg returns the package for a given id. If the package is -// not found, create the package and add it to the p.localPkgs -// and p.sharedPkgs maps. name is the (expected) name of the -// package. If name == "", the package name is expected to be -// set later via an import clause in the export data. -// -// id identifies a package, usually by a canonical package path like -// "encoding/json" but possibly by a non-canonical import path like -// "./json". -// -func (p *parser) getPkg(id, name string) *types.Package { - // package unsafe is not in the packages maps - handle explicitly - if id == "unsafe" { - return types.Unsafe - } - - pkg := p.localPkgs[id] - if pkg == nil { - // first import of id from this package - pkg = p.sharedPkgs[id] - if pkg == nil { - // first import of id by this importer; - // add (possibly unnamed) pkg to shared packages - pkg = types.NewPackage(id, name) - p.sharedPkgs[id] = pkg - } - // add (possibly unnamed) pkg to local packages - if p.localPkgs == nil { - p.localPkgs = make(map[string]*types.Package) - } - p.localPkgs[id] = pkg - } else if name != "" { - // package exists already and we have an expected package name; - // make sure names match or set package name if necessary - if pname := pkg.Name(); pname == "" { - pkg.SetName(name) - } else if pname != name { - p.errorf("%s package name mismatch: %s (given) vs %s (expected)", id, pname, name) - } - } - return pkg -} - -// parseExportedName is like parseQualifiedName, but -// the package id is resolved to an imported *types.Package. -// -func (p *parser) parseExportedName() (pkg *types.Package, name string) { - id, name := p.parseQualifiedName() - pkg = p.getPkg(id, "") - return -} - -// ---------------------------------------------------------------------------- -// Types - -// BasicType = identifier . -// -func (p *parser) parseBasicType() types.Type { - id := p.expect(scanner.Ident) - obj := types.Universe.Lookup(id) - if obj, ok := obj.(*types.TypeName); ok { - return obj.Type() - } - p.errorf("not a basic type: %s", id) - return nil -} - -// ArrayType = "[" int_lit "]" Type . -// -func (p *parser) parseArrayType(parent *types.Package) types.Type { - // "[" already consumed and lookahead known not to be "]" - lit := p.expect(scanner.Int) - p.expect(']') - elem := p.parseType(parent) - n, err := strconv.ParseInt(lit, 10, 64) - if err != nil { - p.error(err) - } - return types.NewArray(elem, n) -} - -// MapType = "map" "[" Type "]" Type . -// -func (p *parser) parseMapType(parent *types.Package) types.Type { - p.expectKeyword("map") - p.expect('[') - key := p.parseType(parent) - p.expect(']') - elem := p.parseType(parent) - return types.NewMap(key, elem) -} - -// Name = identifier | "?" | QualifiedName . -// -// For unqualified and anonymous names, the returned package is the parent -// package unless parent == nil, in which case the returned package is the -// package being imported. (The parent package is not nil if the name -// is an unqualified struct field or interface method name belonging to a -// type declared in another package.) -// -// For qualified names, the returned package is nil (and not created if -// it doesn't exist yet) unless materializePkg is set (which creates an -// unnamed package with valid package path). In the latter case, a -// subsequent import clause is expected to provide a name for the package. -// -func (p *parser) parseName(parent *types.Package, materializePkg bool) (pkg *types.Package, name string) { - pkg = parent - if pkg == nil { - pkg = p.sharedPkgs[p.id] - } - switch p.tok { - case scanner.Ident: - name = p.lit - p.next() - case '?': - // anonymous - p.next() - case '@': - // exported name prefixed with package path - pkg = nil - var id string - id, name = p.parseQualifiedName() - if materializePkg { - pkg = p.getPkg(id, "") - } - default: - p.error("name expected") - } - return -} - -func deref(typ types.Type) types.Type { - if p, _ := typ.(*types.Pointer); p != nil { - return p.Elem() - } - return typ -} - -// Field = Name Type [ string_lit ] . -// -func (p *parser) parseField(parent *types.Package) (*types.Var, string) { - pkg, name := p.parseName(parent, true) - - if name == "_" { - // Blank fields should be package-qualified because they - // are unexported identifiers, but gc does not qualify them. - // Assuming that the ident belongs to the current package - // causes types to change during re-exporting, leading - // to spurious "can't assign A to B" errors from go/types. - // As a workaround, pretend all blank fields belong - // to the same unique dummy package. - const blankpkg = "<_>" - pkg = p.getPkg(blankpkg, blankpkg) - } - - typ := p.parseType(parent) - anonymous := false - if name == "" { - // anonymous field - typ must be T or *T and T must be a type name - switch typ := deref(typ).(type) { - case *types.Basic: // basic types are named types - pkg = nil // objects defined in Universe scope have no package - name = typ.Name() - case *types.Named: - name = typ.Obj().Name() - default: - p.errorf("anonymous field expected") - } - anonymous = true - } - tag := "" - if p.tok == scanner.String { - s := p.expect(scanner.String) - var err error - tag, err = strconv.Unquote(s) - if err != nil { - p.errorf("invalid struct tag %s: %s", s, err) - } - } - return types.NewField(token.NoPos, pkg, name, typ, anonymous), tag -} - -// StructType = "struct" "{" [ FieldList ] "}" . -// FieldList = Field { ";" Field } . -// -func (p *parser) parseStructType(parent *types.Package) types.Type { - var fields []*types.Var - var tags []string - - p.expectKeyword("struct") - p.expect('{') - for i := 0; p.tok != '}' && p.tok != scanner.EOF; i++ { - if i > 0 { - p.expect(';') - } - fld, tag := p.parseField(parent) - if tag != "" && tags == nil { - tags = make([]string, i) - } - if tags != nil { - tags = append(tags, tag) - } - fields = append(fields, fld) - } - p.expect('}') - - return types.NewStruct(fields, tags) -} - -// Parameter = ( identifier | "?" ) [ "..." ] Type [ string_lit ] . -// -func (p *parser) parseParameter() (par *types.Var, isVariadic bool) { - _, name := p.parseName(nil, false) - // remove gc-specific parameter numbering - if i := strings.Index(name, "·"); i >= 0 { - name = name[:i] - } - if p.tok == '.' { - p.expectSpecial("...") - isVariadic = true - } - typ := p.parseType(nil) - if isVariadic { - typ = types.NewSlice(typ) - } - // ignore argument tag (e.g. "noescape") - if p.tok == scanner.String { - p.next() - } - // TODO(gri) should we provide a package? - par = types.NewVar(token.NoPos, nil, name, typ) - return -} - -// Parameters = "(" [ ParameterList ] ")" . -// ParameterList = { Parameter "," } Parameter . -// -func (p *parser) parseParameters() (list []*types.Var, isVariadic bool) { - p.expect('(') - for p.tok != ')' && p.tok != scanner.EOF { - if len(list) > 0 { - p.expect(',') - } - par, variadic := p.parseParameter() - list = append(list, par) - if variadic { - if isVariadic { - p.error("... not on final argument") - } - isVariadic = true - } - } - p.expect(')') - - return -} - -// Signature = Parameters [ Result ] . -// Result = Type | Parameters . -// -func (p *parser) parseSignature(recv *types.Var) *types.Signature { - params, isVariadic := p.parseParameters() - - // optional result type - var results []*types.Var - if p.tok == '(' { - var variadic bool - results, variadic = p.parseParameters() - if variadic { - p.error("... not permitted on result type") - } - } - - return types.NewSignature(recv, types.NewTuple(params...), types.NewTuple(results...), isVariadic) -} - -// InterfaceType = "interface" "{" [ MethodList ] "}" . -// MethodList = Method { ";" Method } . -// Method = Name Signature . -// -// The methods of embedded interfaces are always "inlined" -// by the compiler and thus embedded interfaces are never -// visible in the export data. -// -func (p *parser) parseInterfaceType(parent *types.Package) types.Type { - var methods []*types.Func - - p.expectKeyword("interface") - p.expect('{') - for i := 0; p.tok != '}' && p.tok != scanner.EOF; i++ { - if i > 0 { - p.expect(';') - } - pkg, name := p.parseName(parent, true) - sig := p.parseSignature(nil) - methods = append(methods, types.NewFunc(token.NoPos, pkg, name, sig)) - } - p.expect('}') - - // Complete requires the type's embedded interfaces to be fully defined, - // but we do not define any - return newInterface(methods, nil).Complete() -} - -// ChanType = ( "chan" [ "<-" ] | "<-" "chan" ) Type . -// -func (p *parser) parseChanType(parent *types.Package) types.Type { - dir := types.SendRecv - if p.tok == scanner.Ident { - p.expectKeyword("chan") - if p.tok == '<' { - p.expectSpecial("<-") - dir = types.SendOnly - } - } else { - p.expectSpecial("<-") - p.expectKeyword("chan") - dir = types.RecvOnly - } - elem := p.parseType(parent) - return types.NewChan(dir, elem) -} - -// Type = -// BasicType | TypeName | ArrayType | SliceType | StructType | -// PointerType | FuncType | InterfaceType | MapType | ChanType | -// "(" Type ")" . -// -// BasicType = ident . -// TypeName = ExportedName . -// SliceType = "[" "]" Type . -// PointerType = "*" Type . -// FuncType = "func" Signature . -// -func (p *parser) parseType(parent *types.Package) types.Type { - switch p.tok { - case scanner.Ident: - switch p.lit { - default: - return p.parseBasicType() - case "struct": - return p.parseStructType(parent) - case "func": - // FuncType - p.next() - return p.parseSignature(nil) - case "interface": - return p.parseInterfaceType(parent) - case "map": - return p.parseMapType(parent) - case "chan": - return p.parseChanType(parent) - } - case '@': - // TypeName - pkg, name := p.parseExportedName() - return declTypeName(pkg, name).Type() - case '[': - p.next() // look ahead - if p.tok == ']' { - // SliceType - p.next() - return types.NewSlice(p.parseType(parent)) - } - return p.parseArrayType(parent) - case '*': - // PointerType - p.next() - return types.NewPointer(p.parseType(parent)) - case '<': - return p.parseChanType(parent) - case '(': - // "(" Type ")" - p.next() - typ := p.parseType(parent) - p.expect(')') - return typ - } - p.errorf("expected type, got %s (%q)", scanner.TokenString(p.tok), p.lit) - return nil -} - -// ---------------------------------------------------------------------------- -// Declarations - -// ImportDecl = "import" PackageName PackageId . -// -func (p *parser) parseImportDecl() { - p.expectKeyword("import") - name := p.parsePackageName() - p.getPkg(p.parsePackageID(), name) -} - -// int_lit = [ "+" | "-" ] { "0" ... "9" } . -// -func (p *parser) parseInt() string { - s := "" - switch p.tok { - case '-': - s = "-" - p.next() - case '+': - p.next() - } - return s + p.expect(scanner.Int) -} - -// number = int_lit [ "p" int_lit ] . -// -func (p *parser) parseNumber() (typ *types.Basic, val constant.Value) { - // mantissa - mant := constant.MakeFromLiteral(p.parseInt(), token.INT, 0) - if mant == nil { - panic("invalid mantissa") - } - - if p.lit == "p" { - // exponent (base 2) - p.next() - exp, err := strconv.ParseInt(p.parseInt(), 10, 0) - if err != nil { - p.error(err) - } - if exp < 0 { - denom := constant.MakeInt64(1) - denom = constant.Shift(denom, token.SHL, uint(-exp)) - typ = types.Typ[types.UntypedFloat] - val = constant.BinaryOp(mant, token.QUO, denom) - return - } - if exp > 0 { - mant = constant.Shift(mant, token.SHL, uint(exp)) - } - typ = types.Typ[types.UntypedFloat] - val = mant - return - } - - typ = types.Typ[types.UntypedInt] - val = mant - return -} - -// ConstDecl = "const" ExportedName [ Type ] "=" Literal . -// Literal = bool_lit | int_lit | float_lit | complex_lit | rune_lit | string_lit . -// bool_lit = "true" | "false" . -// complex_lit = "(" float_lit "+" float_lit "i" ")" . -// rune_lit = "(" int_lit "+" int_lit ")" . -// string_lit = `"` { unicode_char } `"` . -// -func (p *parser) parseConstDecl() { - p.expectKeyword("const") - pkg, name := p.parseExportedName() - - var typ0 types.Type - if p.tok != '=' { - // constant types are never structured - no need for parent type - typ0 = p.parseType(nil) - } - - p.expect('=') - var typ types.Type - var val constant.Value - switch p.tok { - case scanner.Ident: - // bool_lit - if p.lit != "true" && p.lit != "false" { - p.error("expected true or false") - } - typ = types.Typ[types.UntypedBool] - val = constant.MakeBool(p.lit == "true") - p.next() - - case '-', scanner.Int: - // int_lit - typ, val = p.parseNumber() - - case '(': - // complex_lit or rune_lit - p.next() - if p.tok == scanner.Char { - p.next() - p.expect('+') - typ = types.Typ[types.UntypedRune] - _, val = p.parseNumber() - p.expect(')') - break - } - _, re := p.parseNumber() - p.expect('+') - _, im := p.parseNumber() - p.expectKeyword("i") - p.expect(')') - typ = types.Typ[types.UntypedComplex] - val = constant.BinaryOp(re, token.ADD, constant.MakeImag(im)) - - case scanner.Char: - // rune_lit - typ = types.Typ[types.UntypedRune] - val = constant.MakeFromLiteral(p.lit, token.CHAR, 0) - p.next() - - case scanner.String: - // string_lit - typ = types.Typ[types.UntypedString] - val = constant.MakeFromLiteral(p.lit, token.STRING, 0) - p.next() - - default: - p.errorf("expected literal got %s", scanner.TokenString(p.tok)) - } - - if typ0 == nil { - typ0 = typ - } - - pkg.Scope().Insert(types.NewConst(token.NoPos, pkg, name, typ0, val)) -} - -// TypeDecl = "type" ExportedName Type . -// -func (p *parser) parseTypeDecl() { - p.expectKeyword("type") - pkg, name := p.parseExportedName() - obj := declTypeName(pkg, name) - - // The type object may have been imported before and thus already - // have a type associated with it. We still need to parse the type - // structure, but throw it away if the object already has a type. - // This ensures that all imports refer to the same type object for - // a given type declaration. - typ := p.parseType(pkg) - - if name := obj.Type().(*types.Named); name.Underlying() == nil { - name.SetUnderlying(typ) - } -} - -// VarDecl = "var" ExportedName Type . -// -func (p *parser) parseVarDecl() { - p.expectKeyword("var") - pkg, name := p.parseExportedName() - typ := p.parseType(pkg) - pkg.Scope().Insert(types.NewVar(token.NoPos, pkg, name, typ)) -} - -// Func = Signature [ Body ] . -// Body = "{" ... "}" . -// -func (p *parser) parseFunc(recv *types.Var) *types.Signature { - sig := p.parseSignature(recv) - if p.tok == '{' { - p.next() - for i := 1; i > 0; p.next() { - switch p.tok { - case '{': - i++ - case '}': - i-- - } - } - } - return sig -} - -// MethodDecl = "func" Receiver Name Func . -// Receiver = "(" ( identifier | "?" ) [ "*" ] ExportedName ")" . -// -func (p *parser) parseMethodDecl() { - // "func" already consumed - p.expect('(') - recv, _ := p.parseParameter() // receiver - p.expect(')') - - // determine receiver base type object - base := deref(recv.Type()).(*types.Named) - - // parse method name, signature, and possibly inlined body - _, name := p.parseName(nil, false) - sig := p.parseFunc(recv) - - // methods always belong to the same package as the base type object - pkg := base.Obj().Pkg() - - // add method to type unless type was imported before - // and method exists already - // TODO(gri) This leads to a quadratic algorithm - ok for now because method counts are small. - base.AddMethod(types.NewFunc(token.NoPos, pkg, name, sig)) -} - -// FuncDecl = "func" ExportedName Func . -// -func (p *parser) parseFuncDecl() { - // "func" already consumed - pkg, name := p.parseExportedName() - typ := p.parseFunc(nil) - pkg.Scope().Insert(types.NewFunc(token.NoPos, pkg, name, typ)) -} - -// Decl = [ ImportDecl | ConstDecl | TypeDecl | VarDecl | FuncDecl | MethodDecl ] "\n" . -// -func (p *parser) parseDecl() { - if p.tok == scanner.Ident { - switch p.lit { - case "import": - p.parseImportDecl() - case "const": - p.parseConstDecl() - case "type": - p.parseTypeDecl() - case "var": - p.parseVarDecl() - case "func": - p.next() // look ahead - if p.tok == '(' { - p.parseMethodDecl() - } else { - p.parseFuncDecl() - } - } - } - p.expect('\n') -} - -// ---------------------------------------------------------------------------- -// Export - -// Export = "PackageClause { Decl } "$$" . -// PackageClause = "package" PackageName [ "safe" ] "\n" . -// -func (p *parser) parseExport() *types.Package { - p.expectKeyword("package") - name := p.parsePackageName() - if p.tok == scanner.Ident && p.lit == "safe" { - // package was compiled with -u option - ignore - p.next() - } - p.expect('\n') - - pkg := p.getPkg(p.id, name) - - for p.tok != '$' && p.tok != scanner.EOF { - p.parseDecl() - } - - if ch := p.scanner.Peek(); p.tok != '$' || ch != '$' { - // don't call next()/expect() since reading past the - // export data may cause scanner errors (e.g. NUL chars) - p.errorf("expected '$$', got %s %c", scanner.TokenString(p.tok), ch) - } - - if n := p.scanner.ErrorCount; n != 0 { - p.errorf("expected no scanner errors, got %d", n) - } - - // Record all locally referenced packages as imports. - var imports []*types.Package - for id, pkg2 := range p.localPkgs { - if pkg2.Name() == "" { - p.errorf("%s package has no name", id) - } - if id == p.id { - continue // avoid self-edge - } - imports = append(imports, pkg2) - } - sort.Sort(byPath(imports)) - pkg.SetImports(imports) - - // package was imported completely and without errors - pkg.MarkComplete() - - return pkg -} - -type byPath []*types.Package - -func (a byPath) Len() int { return len(a) } -func (a byPath) Swap(i, j int) { a[i], a[j] = a[j], a[i] } -func (a byPath) Less(i, j int) bool { return a[i].Path() < a[j].Path() } diff --git a/vendor/golang.org/x/tools/go/internal/gcimporter/iexport.go b/vendor/golang.org/x/tools/go/internal/gcimporter/iexport.go deleted file mode 100644 index 209553409..000000000 --- a/vendor/golang.org/x/tools/go/internal/gcimporter/iexport.go +++ /dev/null @@ -1,1007 +0,0 @@ -// Copyright 2019 The Go Authors. All rights reserved. -// Use of this source code is governed by a BSD-style -// license that can be found in the LICENSE file. - -// Indexed binary package export. -// This file was derived from $GOROOT/src/cmd/compile/internal/gc/iexport.go; -// see that file for specification of the format. - -package gcimporter - -import ( - "bytes" - "encoding/binary" - "fmt" - "go/ast" - "go/constant" - "go/token" - "go/types" - "io" - "math/big" - "reflect" - "sort" - "strconv" - "strings" - - "golang.org/x/tools/internal/typeparams" -) - -// Current bundled export format version. Increase with each format change. -// 0: initial implementation -const bundleVersion = 0 - -// IExportData writes indexed export data for pkg to out. -// -// If no file set is provided, position info will be missing. -// The package path of the top-level package will not be recorded, -// so that calls to IImportData can override with a provided package path. -func IExportData(out io.Writer, fset *token.FileSet, pkg *types.Package) error { - return iexportCommon(out, fset, false, iexportVersion, []*types.Package{pkg}) -} - -// IExportBundle writes an indexed export bundle for pkgs to out. -func IExportBundle(out io.Writer, fset *token.FileSet, pkgs []*types.Package) error { - return iexportCommon(out, fset, true, iexportVersion, pkgs) -} - -func iexportCommon(out io.Writer, fset *token.FileSet, bundle bool, version int, pkgs []*types.Package) (err error) { - if !debug { - defer func() { - if e := recover(); e != nil { - if ierr, ok := e.(internalError); ok { - err = ierr - return - } - // Not an internal error; panic again. - panic(e) - } - }() - } - - p := iexporter{ - fset: fset, - version: version, - allPkgs: map[*types.Package]bool{}, - stringIndex: map[string]uint64{}, - declIndex: map[types.Object]uint64{}, - tparamNames: map[types.Object]string{}, - typIndex: map[types.Type]uint64{}, - } - if !bundle { - p.localpkg = pkgs[0] - } - - for i, pt := range predeclared() { - p.typIndex[pt] = uint64(i) - } - if len(p.typIndex) > predeclReserved { - panic(internalErrorf("too many predeclared types: %d > %d", len(p.typIndex), predeclReserved)) - } - - // Initialize work queue with exported declarations. - for _, pkg := range pkgs { - scope := pkg.Scope() - for _, name := range scope.Names() { - if ast.IsExported(name) { - p.pushDecl(scope.Lookup(name)) - } - } - - if bundle { - // Ensure pkg and its imports are included in the index. - p.allPkgs[pkg] = true - for _, imp := range pkg.Imports() { - p.allPkgs[imp] = true - } - } - } - - // Loop until no more work. - for !p.declTodo.empty() { - p.doDecl(p.declTodo.popHead()) - } - - // Append indices to data0 section. - dataLen := uint64(p.data0.Len()) - w := p.newWriter() - w.writeIndex(p.declIndex) - - if bundle { - w.uint64(uint64(len(pkgs))) - for _, pkg := range pkgs { - w.pkg(pkg) - imps := pkg.Imports() - w.uint64(uint64(len(imps))) - for _, imp := range imps { - w.pkg(imp) - } - } - } - w.flush() - - // Assemble header. - var hdr intWriter - if bundle { - hdr.uint64(bundleVersion) - } - hdr.uint64(uint64(p.version)) - hdr.uint64(uint64(p.strings.Len())) - hdr.uint64(dataLen) - - // Flush output. - io.Copy(out, &hdr) - io.Copy(out, &p.strings) - io.Copy(out, &p.data0) - - return nil -} - -// writeIndex writes out an object index. mainIndex indicates whether -// we're writing out the main index, which is also read by -// non-compiler tools and includes a complete package description -// (i.e., name and height). -func (w *exportWriter) writeIndex(index map[types.Object]uint64) { - type pkgObj struct { - obj types.Object - name string // qualified name; differs from obj.Name for type params - } - // Build a map from packages to objects from that package. - pkgObjs := map[*types.Package][]pkgObj{} - - // For the main index, make sure to include every package that - // we reference, even if we're not exporting (or reexporting) - // any symbols from it. - if w.p.localpkg != nil { - pkgObjs[w.p.localpkg] = nil - } - for pkg := range w.p.allPkgs { - pkgObjs[pkg] = nil - } - - for obj := range index { - name := w.p.exportName(obj) - pkgObjs[obj.Pkg()] = append(pkgObjs[obj.Pkg()], pkgObj{obj, name}) - } - - var pkgs []*types.Package - for pkg, objs := range pkgObjs { - pkgs = append(pkgs, pkg) - - sort.Slice(objs, func(i, j int) bool { - return objs[i].name < objs[j].name - }) - } - - sort.Slice(pkgs, func(i, j int) bool { - return w.exportPath(pkgs[i]) < w.exportPath(pkgs[j]) - }) - - w.uint64(uint64(len(pkgs))) - for _, pkg := range pkgs { - w.string(w.exportPath(pkg)) - w.string(pkg.Name()) - w.uint64(uint64(0)) // package height is not needed for go/types - - objs := pkgObjs[pkg] - w.uint64(uint64(len(objs))) - for _, obj := range objs { - w.string(obj.name) - w.uint64(index[obj.obj]) - } - } -} - -// exportName returns the 'exported' name of an object. It differs from -// obj.Name() only for type parameters (see tparamExportName for details). -func (p *iexporter) exportName(obj types.Object) (res string) { - if name := p.tparamNames[obj]; name != "" { - return name - } - return obj.Name() -} - -type iexporter struct { - fset *token.FileSet - out *bytes.Buffer - version int - - localpkg *types.Package - - // allPkgs tracks all packages that have been referenced by - // the export data, so we can ensure to include them in the - // main index. - allPkgs map[*types.Package]bool - - declTodo objQueue - - strings intWriter - stringIndex map[string]uint64 - - data0 intWriter - declIndex map[types.Object]uint64 - tparamNames map[types.Object]string // typeparam->exported name - typIndex map[types.Type]uint64 - - indent int // for tracing support -} - -func (p *iexporter) trace(format string, args ...interface{}) { - if !trace { - // Call sites should also be guarded, but having this check here allows - // easily enabling/disabling debug trace statements. - return - } - fmt.Printf(strings.Repeat("..", p.indent)+format+"\n", args...) -} - -// stringOff returns the offset of s within the string section. -// If not already present, it's added to the end. -func (p *iexporter) stringOff(s string) uint64 { - off, ok := p.stringIndex[s] - if !ok { - off = uint64(p.strings.Len()) - p.stringIndex[s] = off - - p.strings.uint64(uint64(len(s))) - p.strings.WriteString(s) - } - return off -} - -// pushDecl adds n to the declaration work queue, if not already present. -func (p *iexporter) pushDecl(obj types.Object) { - // Package unsafe is known to the compiler and predeclared. - assert(obj.Pkg() != types.Unsafe) - - if _, ok := p.declIndex[obj]; ok { - return - } - - p.declIndex[obj] = ^uint64(0) // mark obj present in work queue - p.declTodo.pushTail(obj) -} - -// exportWriter handles writing out individual data section chunks. -type exportWriter struct { - p *iexporter - - data intWriter - currPkg *types.Package - prevFile string - prevLine int64 - prevColumn int64 -} - -func (w *exportWriter) exportPath(pkg *types.Package) string { - if pkg == w.p.localpkg { - return "" - } - return pkg.Path() -} - -func (p *iexporter) doDecl(obj types.Object) { - if trace { - p.trace("exporting decl %v (%T)", obj, obj) - p.indent++ - defer func() { - p.indent-- - p.trace("=> %s", obj) - }() - } - w := p.newWriter() - w.setPkg(obj.Pkg(), false) - - switch obj := obj.(type) { - case *types.Var: - w.tag('V') - w.pos(obj.Pos()) - w.typ(obj.Type(), obj.Pkg()) - - case *types.Func: - sig, _ := obj.Type().(*types.Signature) - if sig.Recv() != nil { - panic(internalErrorf("unexpected method: %v", sig)) - } - - // Function. - if typeparams.ForSignature(sig).Len() == 0 { - w.tag('F') - } else { - w.tag('G') - } - w.pos(obj.Pos()) - // The tparam list of the function type is the declaration of the type - // params. So, write out the type params right now. Then those type params - // will be referenced via their type offset (via typOff) in all other - // places in the signature and function where they are used. - // - // While importing the type parameters, tparamList computes and records - // their export name, so that it can be later used when writing the index. - if tparams := typeparams.ForSignature(sig); tparams.Len() > 0 { - w.tparamList(obj.Name(), tparams, obj.Pkg()) - } - w.signature(sig) - - case *types.Const: - w.tag('C') - w.pos(obj.Pos()) - w.value(obj.Type(), obj.Val()) - - case *types.TypeName: - t := obj.Type() - - if tparam, ok := t.(*typeparams.TypeParam); ok { - w.tag('P') - w.pos(obj.Pos()) - constraint := tparam.Constraint() - if p.version >= iexportVersionGo1_18 { - implicit := false - if iface, _ := constraint.(*types.Interface); iface != nil { - implicit = typeparams.IsImplicit(iface) - } - w.bool(implicit) - } - w.typ(constraint, obj.Pkg()) - break - } - - if obj.IsAlias() { - w.tag('A') - w.pos(obj.Pos()) - w.typ(t, obj.Pkg()) - break - } - - // Defined type. - named, ok := t.(*types.Named) - if !ok { - panic(internalErrorf("%s is not a defined type", t)) - } - - if typeparams.ForNamed(named).Len() == 0 { - w.tag('T') - } else { - w.tag('U') - } - w.pos(obj.Pos()) - - if typeparams.ForNamed(named).Len() > 0 { - // While importing the type parameters, tparamList computes and records - // their export name, so that it can be later used when writing the index. - w.tparamList(obj.Name(), typeparams.ForNamed(named), obj.Pkg()) - } - - underlying := obj.Type().Underlying() - w.typ(underlying, obj.Pkg()) - - if types.IsInterface(t) { - break - } - - n := named.NumMethods() - w.uint64(uint64(n)) - for i := 0; i < n; i++ { - m := named.Method(i) - w.pos(m.Pos()) - w.string(m.Name()) - sig, _ := m.Type().(*types.Signature) - - // Receiver type parameters are type arguments of the receiver type, so - // their name must be qualified before exporting recv. - if rparams := typeparams.RecvTypeParams(sig); rparams.Len() > 0 { - prefix := obj.Name() + "." + m.Name() - for i := 0; i < rparams.Len(); i++ { - rparam := rparams.At(i) - name := tparamExportName(prefix, rparam) - w.p.tparamNames[rparam.Obj()] = name - } - } - w.param(sig.Recv()) - w.signature(sig) - } - - default: - panic(internalErrorf("unexpected object: %v", obj)) - } - - p.declIndex[obj] = w.flush() -} - -func (w *exportWriter) tag(tag byte) { - w.data.WriteByte(tag) -} - -func (w *exportWriter) pos(pos token.Pos) { - if w.p.version >= iexportVersionPosCol { - w.posV1(pos) - } else { - w.posV0(pos) - } -} - -func (w *exportWriter) posV1(pos token.Pos) { - if w.p.fset == nil { - w.int64(0) - return - } - - p := w.p.fset.Position(pos) - file := p.Filename - line := int64(p.Line) - column := int64(p.Column) - - deltaColumn := (column - w.prevColumn) << 1 - deltaLine := (line - w.prevLine) << 1 - - if file != w.prevFile { - deltaLine |= 1 - } - if deltaLine != 0 { - deltaColumn |= 1 - } - - w.int64(deltaColumn) - if deltaColumn&1 != 0 { - w.int64(deltaLine) - if deltaLine&1 != 0 { - w.string(file) - } - } - - w.prevFile = file - w.prevLine = line - w.prevColumn = column -} - -func (w *exportWriter) posV0(pos token.Pos) { - if w.p.fset == nil { - w.int64(0) - return - } - - p := w.p.fset.Position(pos) - file := p.Filename - line := int64(p.Line) - - // When file is the same as the last position (common case), - // we can save a few bytes by delta encoding just the line - // number. - // - // Note: Because data objects may be read out of order (or not - // at all), we can only apply delta encoding within a single - // object. This is handled implicitly by tracking prevFile and - // prevLine as fields of exportWriter. - - if file == w.prevFile { - delta := line - w.prevLine - w.int64(delta) - if delta == deltaNewFile { - w.int64(-1) - } - } else { - w.int64(deltaNewFile) - w.int64(line) // line >= 0 - w.string(file) - w.prevFile = file - } - w.prevLine = line -} - -func (w *exportWriter) pkg(pkg *types.Package) { - // Ensure any referenced packages are declared in the main index. - w.p.allPkgs[pkg] = true - - w.string(w.exportPath(pkg)) -} - -func (w *exportWriter) qualifiedIdent(obj types.Object) { - name := w.p.exportName(obj) - - // Ensure any referenced declarations are written out too. - w.p.pushDecl(obj) - w.string(name) - w.pkg(obj.Pkg()) -} - -func (w *exportWriter) typ(t types.Type, pkg *types.Package) { - w.data.uint64(w.p.typOff(t, pkg)) -} - -func (p *iexporter) newWriter() *exportWriter { - return &exportWriter{p: p} -} - -func (w *exportWriter) flush() uint64 { - off := uint64(w.p.data0.Len()) - io.Copy(&w.p.data0, &w.data) - return off -} - -func (p *iexporter) typOff(t types.Type, pkg *types.Package) uint64 { - off, ok := p.typIndex[t] - if !ok { - w := p.newWriter() - w.doTyp(t, pkg) - off = predeclReserved + w.flush() - p.typIndex[t] = off - } - return off -} - -func (w *exportWriter) startType(k itag) { - w.data.uint64(uint64(k)) -} - -func (w *exportWriter) doTyp(t types.Type, pkg *types.Package) { - if trace { - w.p.trace("exporting type %s (%T)", t, t) - w.p.indent++ - defer func() { - w.p.indent-- - w.p.trace("=> %s", t) - }() - } - switch t := t.(type) { - case *types.Named: - if targs := typeparams.NamedTypeArgs(t); targs.Len() > 0 { - w.startType(instanceType) - // TODO(rfindley): investigate if this position is correct, and if it - // matters. - w.pos(t.Obj().Pos()) - w.typeList(targs, pkg) - w.typ(typeparams.NamedTypeOrigin(t), pkg) - return - } - w.startType(definedType) - w.qualifiedIdent(t.Obj()) - - case *typeparams.TypeParam: - w.startType(typeParamType) - w.qualifiedIdent(t.Obj()) - - case *types.Pointer: - w.startType(pointerType) - w.typ(t.Elem(), pkg) - - case *types.Slice: - w.startType(sliceType) - w.typ(t.Elem(), pkg) - - case *types.Array: - w.startType(arrayType) - w.uint64(uint64(t.Len())) - w.typ(t.Elem(), pkg) - - case *types.Chan: - w.startType(chanType) - // 1 RecvOnly; 2 SendOnly; 3 SendRecv - var dir uint64 - switch t.Dir() { - case types.RecvOnly: - dir = 1 - case types.SendOnly: - dir = 2 - case types.SendRecv: - dir = 3 - } - w.uint64(dir) - w.typ(t.Elem(), pkg) - - case *types.Map: - w.startType(mapType) - w.typ(t.Key(), pkg) - w.typ(t.Elem(), pkg) - - case *types.Signature: - w.startType(signatureType) - w.setPkg(pkg, true) - w.signature(t) - - case *types.Struct: - w.startType(structType) - w.setPkg(pkg, true) - - n := t.NumFields() - w.uint64(uint64(n)) - for i := 0; i < n; i++ { - f := t.Field(i) - w.pos(f.Pos()) - w.string(f.Name()) - w.typ(f.Type(), pkg) - w.bool(f.Anonymous()) - w.string(t.Tag(i)) // note (or tag) - } - - case *types.Interface: - w.startType(interfaceType) - w.setPkg(pkg, true) - - n := t.NumEmbeddeds() - w.uint64(uint64(n)) - for i := 0; i < n; i++ { - ft := t.EmbeddedType(i) - tPkg := pkg - if named, _ := ft.(*types.Named); named != nil { - w.pos(named.Obj().Pos()) - } else { - w.pos(token.NoPos) - } - w.typ(ft, tPkg) - } - - n = t.NumExplicitMethods() - w.uint64(uint64(n)) - for i := 0; i < n; i++ { - m := t.ExplicitMethod(i) - w.pos(m.Pos()) - w.string(m.Name()) - sig, _ := m.Type().(*types.Signature) - w.signature(sig) - } - - case *typeparams.Union: - w.startType(unionType) - nt := t.Len() - w.uint64(uint64(nt)) - for i := 0; i < nt; i++ { - term := t.Term(i) - w.bool(term.Tilde()) - w.typ(term.Type(), pkg) - } - - default: - panic(internalErrorf("unexpected type: %v, %v", t, reflect.TypeOf(t))) - } -} - -func (w *exportWriter) setPkg(pkg *types.Package, write bool) { - if write { - w.pkg(pkg) - } - - w.currPkg = pkg -} - -func (w *exportWriter) signature(sig *types.Signature) { - w.paramList(sig.Params()) - w.paramList(sig.Results()) - if sig.Params().Len() > 0 { - w.bool(sig.Variadic()) - } -} - -func (w *exportWriter) typeList(ts *typeparams.TypeList, pkg *types.Package) { - w.uint64(uint64(ts.Len())) - for i := 0; i < ts.Len(); i++ { - w.typ(ts.At(i), pkg) - } -} - -func (w *exportWriter) tparamList(prefix string, list *typeparams.TypeParamList, pkg *types.Package) { - ll := uint64(list.Len()) - w.uint64(ll) - for i := 0; i < list.Len(); i++ { - tparam := list.At(i) - // Set the type parameter exportName before exporting its type. - exportName := tparamExportName(prefix, tparam) - w.p.tparamNames[tparam.Obj()] = exportName - w.typ(list.At(i), pkg) - } -} - -const blankMarker = "$" - -// tparamExportName returns the 'exported' name of a type parameter, which -// differs from its actual object name: it is prefixed with a qualifier, and -// blank type parameter names are disambiguated by their index in the type -// parameter list. -func tparamExportName(prefix string, tparam *typeparams.TypeParam) string { - assert(prefix != "") - name := tparam.Obj().Name() - if name == "_" { - name = blankMarker + strconv.Itoa(tparam.Index()) - } - return prefix + "." + name -} - -// tparamName returns the real name of a type parameter, after stripping its -// qualifying prefix and reverting blank-name encoding. See tparamExportName -// for details. -func tparamName(exportName string) string { - // Remove the "path" from the type param name that makes it unique. - ix := strings.LastIndex(exportName, ".") - if ix < 0 { - errorf("malformed type parameter export name %s: missing prefix", exportName) - } - name := exportName[ix+1:] - if strings.HasPrefix(name, blankMarker) { - return "_" - } - return name -} - -func (w *exportWriter) paramList(tup *types.Tuple) { - n := tup.Len() - w.uint64(uint64(n)) - for i := 0; i < n; i++ { - w.param(tup.At(i)) - } -} - -func (w *exportWriter) param(obj types.Object) { - w.pos(obj.Pos()) - w.localIdent(obj) - w.typ(obj.Type(), obj.Pkg()) -} - -func (w *exportWriter) value(typ types.Type, v constant.Value) { - w.typ(typ, nil) - if w.p.version >= iexportVersionGo1_18 { - w.int64(int64(v.Kind())) - } - - switch b := typ.Underlying().(*types.Basic); b.Info() & types.IsConstType { - case types.IsBoolean: - w.bool(constant.BoolVal(v)) - case types.IsInteger: - var i big.Int - if i64, exact := constant.Int64Val(v); exact { - i.SetInt64(i64) - } else if ui64, exact := constant.Uint64Val(v); exact { - i.SetUint64(ui64) - } else { - i.SetString(v.ExactString(), 10) - } - w.mpint(&i, typ) - case types.IsFloat: - f := constantToFloat(v) - w.mpfloat(f, typ) - case types.IsComplex: - w.mpfloat(constantToFloat(constant.Real(v)), typ) - w.mpfloat(constantToFloat(constant.Imag(v)), typ) - case types.IsString: - w.string(constant.StringVal(v)) - default: - if b.Kind() == types.Invalid { - // package contains type errors - break - } - panic(internalErrorf("unexpected type %v (%v)", typ, typ.Underlying())) - } -} - -// constantToFloat converts a constant.Value with kind constant.Float to a -// big.Float. -func constantToFloat(x constant.Value) *big.Float { - x = constant.ToFloat(x) - // Use the same floating-point precision (512) as cmd/compile - // (see Mpprec in cmd/compile/internal/gc/mpfloat.go). - const mpprec = 512 - var f big.Float - f.SetPrec(mpprec) - if v, exact := constant.Float64Val(x); exact { - // float64 - f.SetFloat64(v) - } else if num, denom := constant.Num(x), constant.Denom(x); num.Kind() == constant.Int { - // TODO(gri): add big.Rat accessor to constant.Value. - n := valueToRat(num) - d := valueToRat(denom) - f.SetRat(n.Quo(n, d)) - } else { - // Value too large to represent as a fraction => inaccessible. - // TODO(gri): add big.Float accessor to constant.Value. - _, ok := f.SetString(x.ExactString()) - assert(ok) - } - return &f -} - -// mpint exports a multi-precision integer. -// -// For unsigned types, small values are written out as a single -// byte. Larger values are written out as a length-prefixed big-endian -// byte string, where the length prefix is encoded as its complement. -// For example, bytes 0, 1, and 2 directly represent the integer -// values 0, 1, and 2; while bytes 255, 254, and 253 indicate a 1-, -// 2-, and 3-byte big-endian string follow. -// -// Encoding for signed types use the same general approach as for -// unsigned types, except small values use zig-zag encoding and the -// bottom bit of length prefix byte for large values is reserved as a -// sign bit. -// -// The exact boundary between small and large encodings varies -// according to the maximum number of bytes needed to encode a value -// of type typ. As a special case, 8-bit types are always encoded as a -// single byte. -// -// TODO(mdempsky): Is this level of complexity really worthwhile? -func (w *exportWriter) mpint(x *big.Int, typ types.Type) { - basic, ok := typ.Underlying().(*types.Basic) - if !ok { - panic(internalErrorf("unexpected type %v (%T)", typ.Underlying(), typ.Underlying())) - } - - signed, maxBytes := intSize(basic) - - negative := x.Sign() < 0 - if !signed && negative { - panic(internalErrorf("negative unsigned integer; type %v, value %v", typ, x)) - } - - b := x.Bytes() - if len(b) > 0 && b[0] == 0 { - panic(internalErrorf("leading zeros")) - } - if uint(len(b)) > maxBytes { - panic(internalErrorf("bad mpint length: %d > %d (type %v, value %v)", len(b), maxBytes, typ, x)) - } - - maxSmall := 256 - maxBytes - if signed { - maxSmall = 256 - 2*maxBytes - } - if maxBytes == 1 { - maxSmall = 256 - } - - // Check if x can use small value encoding. - if len(b) <= 1 { - var ux uint - if len(b) == 1 { - ux = uint(b[0]) - } - if signed { - ux <<= 1 - if negative { - ux-- - } - } - if ux < maxSmall { - w.data.WriteByte(byte(ux)) - return - } - } - - n := 256 - uint(len(b)) - if signed { - n = 256 - 2*uint(len(b)) - if negative { - n |= 1 - } - } - if n < maxSmall || n >= 256 { - panic(internalErrorf("encoding mistake: %d, %v, %v => %d", len(b), signed, negative, n)) - } - - w.data.WriteByte(byte(n)) - w.data.Write(b) -} - -// mpfloat exports a multi-precision floating point number. -// -// The number's value is decomposed into mantissa × 2**exponent, where -// mantissa is an integer. The value is written out as mantissa (as a -// multi-precision integer) and then the exponent, except exponent is -// omitted if mantissa is zero. -func (w *exportWriter) mpfloat(f *big.Float, typ types.Type) { - if f.IsInf() { - panic("infinite constant") - } - - // Break into f = mant × 2**exp, with 0.5 <= mant < 1. - var mant big.Float - exp := int64(f.MantExp(&mant)) - - // Scale so that mant is an integer. - prec := mant.MinPrec() - mant.SetMantExp(&mant, int(prec)) - exp -= int64(prec) - - manti, acc := mant.Int(nil) - if acc != big.Exact { - panic(internalErrorf("mantissa scaling failed for %f (%s)", f, acc)) - } - w.mpint(manti, typ) - if manti.Sign() != 0 { - w.int64(exp) - } -} - -func (w *exportWriter) bool(b bool) bool { - var x uint64 - if b { - x = 1 - } - w.uint64(x) - return b -} - -func (w *exportWriter) int64(x int64) { w.data.int64(x) } -func (w *exportWriter) uint64(x uint64) { w.data.uint64(x) } -func (w *exportWriter) string(s string) { w.uint64(w.p.stringOff(s)) } - -func (w *exportWriter) localIdent(obj types.Object) { - // Anonymous parameters. - if obj == nil { - w.string("") - return - } - - name := obj.Name() - if name == "_" { - w.string("_") - return - } - - w.string(name) -} - -type intWriter struct { - bytes.Buffer -} - -func (w *intWriter) int64(x int64) { - var buf [binary.MaxVarintLen64]byte - n := binary.PutVarint(buf[:], x) - w.Write(buf[:n]) -} - -func (w *intWriter) uint64(x uint64) { - var buf [binary.MaxVarintLen64]byte - n := binary.PutUvarint(buf[:], x) - w.Write(buf[:n]) -} - -func assert(cond bool) { - if !cond { - panic("internal error: assertion failed") - } -} - -// The below is copied from go/src/cmd/compile/internal/gc/syntax.go. - -// objQueue is a FIFO queue of types.Object. The zero value of objQueue is -// a ready-to-use empty queue. -type objQueue struct { - ring []types.Object - head, tail int -} - -// empty returns true if q contains no Nodes. -func (q *objQueue) empty() bool { - return q.head == q.tail -} - -// pushTail appends n to the tail of the queue. -func (q *objQueue) pushTail(obj types.Object) { - if len(q.ring) == 0 { - q.ring = make([]types.Object, 16) - } else if q.head+len(q.ring) == q.tail { - // Grow the ring. - nring := make([]types.Object, len(q.ring)*2) - // Copy the old elements. - part := q.ring[q.head%len(q.ring):] - if q.tail-q.head <= len(part) { - part = part[:q.tail-q.head] - copy(nring, part) - } else { - pos := copy(nring, part) - copy(nring[pos:], q.ring[:q.tail%len(q.ring)]) - } - q.ring, q.head, q.tail = nring, 0, q.tail-q.head - } - - q.ring[q.tail%len(q.ring)] = obj - q.tail++ -} - -// popHead pops a node from the head of the queue. It panics if q is empty. -func (q *objQueue) popHead() types.Object { - if q.empty() { - panic("dequeue empty") - } - obj := q.ring[q.head%len(q.ring)] - q.head++ - return obj -} diff --git a/vendor/golang.org/x/tools/go/internal/gcimporter/iimport.go b/vendor/golang.org/x/tools/go/internal/gcimporter/iimport.go deleted file mode 100644 index 84cfb807d..000000000 --- a/vendor/golang.org/x/tools/go/internal/gcimporter/iimport.go +++ /dev/null @@ -1,896 +0,0 @@ -// Copyright 2018 The Go Authors. All rights reserved. -// Use of this source code is governed by a BSD-style -// license that can be found in the LICENSE file. - -// Indexed package import. -// See cmd/compile/internal/gc/iexport.go for the export data format. - -// This file is a copy of $GOROOT/src/go/internal/gcimporter/iimport.go. - -package gcimporter - -import ( - "bytes" - "encoding/binary" - "fmt" - "go/constant" - "go/token" - "go/types" - "io" - "sort" - "strings" - - "golang.org/x/tools/internal/typeparams" -) - -type intReader struct { - *bytes.Reader - path string -} - -func (r *intReader) int64() int64 { - i, err := binary.ReadVarint(r.Reader) - if err != nil { - errorf("import %q: read varint error: %v", r.path, err) - } - return i -} - -func (r *intReader) uint64() uint64 { - i, err := binary.ReadUvarint(r.Reader) - if err != nil { - errorf("import %q: read varint error: %v", r.path, err) - } - return i -} - -// Keep this in sync with constants in iexport.go. -const ( - iexportVersionGo1_11 = 0 - iexportVersionPosCol = 1 - iexportVersionGo1_18 = 2 - iexportVersionGenerics = 2 -) - -type ident struct { - pkg string - name string -} - -const predeclReserved = 32 - -type itag uint64 - -const ( - // Types - definedType itag = iota - pointerType - sliceType - arrayType - chanType - mapType - signatureType - structType - interfaceType - typeParamType - instanceType - unionType -) - -// IImportData imports a package from the serialized package data -// and returns 0 and a reference to the package. -// If the export data version is not recognized or the format is otherwise -// compromised, an error is returned. -func IImportData(fset *token.FileSet, imports map[string]*types.Package, data []byte, path string) (int, *types.Package, error) { - pkgs, err := iimportCommon(fset, imports, data, false, path) - if err != nil { - return 0, nil, err - } - return 0, pkgs[0], nil -} - -// IImportBundle imports a set of packages from the serialized package bundle. -func IImportBundle(fset *token.FileSet, imports map[string]*types.Package, data []byte) ([]*types.Package, error) { - return iimportCommon(fset, imports, data, true, "") -} - -func iimportCommon(fset *token.FileSet, imports map[string]*types.Package, data []byte, bundle bool, path string) (pkgs []*types.Package, err error) { - const currentVersion = 1 - version := int64(-1) - if !debug { - defer func() { - if e := recover(); e != nil { - if version > currentVersion { - err = fmt.Errorf("cannot import %q (%v), export data is newer version - update tool", path, e) - } else { - err = fmt.Errorf("cannot import %q (%v), possibly version skew - reinstall package", path, e) - } - } - }() - } - - r := &intReader{bytes.NewReader(data), path} - - if bundle { - bundleVersion := r.uint64() - switch bundleVersion { - case bundleVersion: - default: - errorf("unknown bundle format version %d", bundleVersion) - } - } - - version = int64(r.uint64()) - switch version { - case iexportVersionGo1_18, iexportVersionPosCol, iexportVersionGo1_11: - default: - if version > iexportVersionGo1_18 { - errorf("unstable iexport format version %d, just rebuild compiler and std library", version) - } else { - errorf("unknown iexport format version %d", version) - } - } - - sLen := int64(r.uint64()) - dLen := int64(r.uint64()) - - whence, _ := r.Seek(0, io.SeekCurrent) - stringData := data[whence : whence+sLen] - declData := data[whence+sLen : whence+sLen+dLen] - r.Seek(sLen+dLen, io.SeekCurrent) - - p := iimporter{ - version: int(version), - ipath: path, - - stringData: stringData, - stringCache: make(map[uint64]string), - pkgCache: make(map[uint64]*types.Package), - - declData: declData, - pkgIndex: make(map[*types.Package]map[string]uint64), - typCache: make(map[uint64]types.Type), - // Separate map for typeparams, keyed by their package and unique - // name. - tparamIndex: make(map[ident]types.Type), - - fake: fakeFileSet{ - fset: fset, - files: make(map[string]*fileInfo), - }, - } - defer p.fake.setLines() // set lines for files in fset - - for i, pt := range predeclared() { - p.typCache[uint64(i)] = pt - } - - pkgList := make([]*types.Package, r.uint64()) - for i := range pkgList { - pkgPathOff := r.uint64() - pkgPath := p.stringAt(pkgPathOff) - pkgName := p.stringAt(r.uint64()) - _ = r.uint64() // package height; unused by go/types - - if pkgPath == "" { - pkgPath = path - } - pkg := imports[pkgPath] - if pkg == nil { - pkg = types.NewPackage(pkgPath, pkgName) - imports[pkgPath] = pkg - } else if pkg.Name() != pkgName { - errorf("conflicting names %s and %s for package %q", pkg.Name(), pkgName, path) - } - - p.pkgCache[pkgPathOff] = pkg - - nameIndex := make(map[string]uint64) - for nSyms := r.uint64(); nSyms > 0; nSyms-- { - name := p.stringAt(r.uint64()) - nameIndex[name] = r.uint64() - } - - p.pkgIndex[pkg] = nameIndex - pkgList[i] = pkg - } - - if bundle { - pkgs = make([]*types.Package, r.uint64()) - for i := range pkgs { - pkg := p.pkgAt(r.uint64()) - imps := make([]*types.Package, r.uint64()) - for j := range imps { - imps[j] = p.pkgAt(r.uint64()) - } - pkg.SetImports(imps) - pkgs[i] = pkg - } - } else { - if len(pkgList) == 0 { - errorf("no packages found for %s", path) - panic("unreachable") - } - pkgs = pkgList[:1] - - // record all referenced packages as imports - list := append(([]*types.Package)(nil), pkgList[1:]...) - sort.Sort(byPath(list)) - pkgs[0].SetImports(list) - } - - for _, pkg := range pkgs { - if pkg.Complete() { - continue - } - - names := make([]string, 0, len(p.pkgIndex[pkg])) - for name := range p.pkgIndex[pkg] { - names = append(names, name) - } - sort.Strings(names) - for _, name := range names { - p.doDecl(pkg, name) - } - - // package was imported completely and without errors - pkg.MarkComplete() - } - - // SetConstraint can't be called if the constraint type is not yet complete. - // When type params are created in the 'P' case of (*importReader).obj(), - // the associated constraint type may not be complete due to recursion. - // Therefore, we defer calling SetConstraint there, and call it here instead - // after all types are complete. - for _, d := range p.later { - typeparams.SetTypeParamConstraint(d.t, d.constraint) - } - - for _, typ := range p.interfaceList { - typ.Complete() - } - - return pkgs, nil -} - -type setConstraintArgs struct { - t *typeparams.TypeParam - constraint types.Type -} - -type iimporter struct { - version int - ipath string - - stringData []byte - stringCache map[uint64]string - pkgCache map[uint64]*types.Package - - declData []byte - pkgIndex map[*types.Package]map[string]uint64 - typCache map[uint64]types.Type - tparamIndex map[ident]types.Type - - fake fakeFileSet - interfaceList []*types.Interface - - // Arguments for calls to SetConstraint that are deferred due to recursive types - later []setConstraintArgs - - indent int // for tracing support -} - -func (p *iimporter) trace(format string, args ...interface{}) { - if !trace { - // Call sites should also be guarded, but having this check here allows - // easily enabling/disabling debug trace statements. - return - } - fmt.Printf(strings.Repeat("..", p.indent)+format+"\n", args...) -} - -func (p *iimporter) doDecl(pkg *types.Package, name string) { - if debug { - p.trace("import decl %s", name) - p.indent++ - defer func() { - p.indent-- - p.trace("=> %s", name) - }() - } - // See if we've already imported this declaration. - if obj := pkg.Scope().Lookup(name); obj != nil { - return - } - - off, ok := p.pkgIndex[pkg][name] - if !ok { - errorf("%v.%v not in index", pkg, name) - } - - r := &importReader{p: p, currPkg: pkg} - r.declReader.Reset(p.declData[off:]) - - r.obj(name) -} - -func (p *iimporter) stringAt(off uint64) string { - if s, ok := p.stringCache[off]; ok { - return s - } - - slen, n := binary.Uvarint(p.stringData[off:]) - if n <= 0 { - errorf("varint failed") - } - spos := off + uint64(n) - s := string(p.stringData[spos : spos+slen]) - p.stringCache[off] = s - return s -} - -func (p *iimporter) pkgAt(off uint64) *types.Package { - if pkg, ok := p.pkgCache[off]; ok { - return pkg - } - path := p.stringAt(off) - errorf("missing package %q in %q", path, p.ipath) - return nil -} - -func (p *iimporter) typAt(off uint64, base *types.Named) types.Type { - if t, ok := p.typCache[off]; ok && canReuse(base, t) { - return t - } - - if off < predeclReserved { - errorf("predeclared type missing from cache: %v", off) - } - - r := &importReader{p: p} - r.declReader.Reset(p.declData[off-predeclReserved:]) - t := r.doType(base) - - if canReuse(base, t) { - p.typCache[off] = t - } - return t -} - -// canReuse reports whether the type rhs on the RHS of the declaration for def -// may be re-used. -// -// Specifically, if def is non-nil and rhs is an interface type with methods, it -// may not be re-used because we have a convention of setting the receiver type -// for interface methods to def. -func canReuse(def *types.Named, rhs types.Type) bool { - if def == nil { - return true - } - iface, _ := rhs.(*types.Interface) - if iface == nil { - return true - } - // Don't use iface.Empty() here as iface may not be complete. - return iface.NumEmbeddeds() == 0 && iface.NumExplicitMethods() == 0 -} - -type importReader struct { - p *iimporter - declReader bytes.Reader - currPkg *types.Package - prevFile string - prevLine int64 - prevColumn int64 -} - -func (r *importReader) obj(name string) { - tag := r.byte() - pos := r.pos() - - switch tag { - case 'A': - typ := r.typ() - - r.declare(types.NewTypeName(pos, r.currPkg, name, typ)) - - case 'C': - typ, val := r.value() - - r.declare(types.NewConst(pos, r.currPkg, name, typ, val)) - - case 'F', 'G': - var tparams []*typeparams.TypeParam - if tag == 'G' { - tparams = r.tparamList() - } - sig := r.signature(nil, nil, tparams) - r.declare(types.NewFunc(pos, r.currPkg, name, sig)) - - case 'T', 'U': - // Types can be recursive. We need to setup a stub - // declaration before recursing. - obj := types.NewTypeName(pos, r.currPkg, name, nil) - named := types.NewNamed(obj, nil, nil) - // Declare obj before calling r.tparamList, so the new type name is recognized - // if used in the constraint of one of its own typeparams (see #48280). - r.declare(obj) - if tag == 'U' { - tparams := r.tparamList() - typeparams.SetForNamed(named, tparams) - } - - underlying := r.p.typAt(r.uint64(), named).Underlying() - named.SetUnderlying(underlying) - - if !isInterface(underlying) { - for n := r.uint64(); n > 0; n-- { - mpos := r.pos() - mname := r.ident() - recv := r.param() - - // If the receiver has any targs, set those as the - // rparams of the method (since those are the - // typeparams being used in the method sig/body). - base := baseType(recv.Type()) - assert(base != nil) - targs := typeparams.NamedTypeArgs(base) - var rparams []*typeparams.TypeParam - if targs.Len() > 0 { - rparams = make([]*typeparams.TypeParam, targs.Len()) - for i := range rparams { - rparams[i] = targs.At(i).(*typeparams.TypeParam) - } - } - msig := r.signature(recv, rparams, nil) - - named.AddMethod(types.NewFunc(mpos, r.currPkg, mname, msig)) - } - } - - case 'P': - // We need to "declare" a typeparam in order to have a name that - // can be referenced recursively (if needed) in the type param's - // bound. - if r.p.version < iexportVersionGenerics { - errorf("unexpected type param type") - } - name0 := tparamName(name) - tn := types.NewTypeName(pos, r.currPkg, name0, nil) - t := typeparams.NewTypeParam(tn, nil) - - // To handle recursive references to the typeparam within its - // bound, save the partial type in tparamIndex before reading the bounds. - id := ident{r.currPkg.Name(), name} - r.p.tparamIndex[id] = t - var implicit bool - if r.p.version >= iexportVersionGo1_18 { - implicit = r.bool() - } - constraint := r.typ() - if implicit { - iface, _ := constraint.(*types.Interface) - if iface == nil { - errorf("non-interface constraint marked implicit") - } - typeparams.MarkImplicit(iface) - } - // The constraint type may not be complete, if we - // are in the middle of a type recursion involving type - // constraints. So, we defer SetConstraint until we have - // completely set up all types in ImportData. - r.p.later = append(r.p.later, setConstraintArgs{t: t, constraint: constraint}) - - case 'V': - typ := r.typ() - - r.declare(types.NewVar(pos, r.currPkg, name, typ)) - - default: - errorf("unexpected tag: %v", tag) - } -} - -func (r *importReader) declare(obj types.Object) { - obj.Pkg().Scope().Insert(obj) -} - -func (r *importReader) value() (typ types.Type, val constant.Value) { - typ = r.typ() - if r.p.version >= iexportVersionGo1_18 { - // TODO: add support for using the kind. - _ = constant.Kind(r.int64()) - } - - switch b := typ.Underlying().(*types.Basic); b.Info() & types.IsConstType { - case types.IsBoolean: - val = constant.MakeBool(r.bool()) - - case types.IsString: - val = constant.MakeString(r.string()) - - case types.IsInteger: - val = r.mpint(b) - - case types.IsFloat: - val = r.mpfloat(b) - - case types.IsComplex: - re := r.mpfloat(b) - im := r.mpfloat(b) - val = constant.BinaryOp(re, token.ADD, constant.MakeImag(im)) - - default: - if b.Kind() == types.Invalid { - val = constant.MakeUnknown() - return - } - errorf("unexpected type %v", typ) // panics - panic("unreachable") - } - - return -} - -func intSize(b *types.Basic) (signed bool, maxBytes uint) { - if (b.Info() & types.IsUntyped) != 0 { - return true, 64 - } - - switch b.Kind() { - case types.Float32, types.Complex64: - return true, 3 - case types.Float64, types.Complex128: - return true, 7 - } - - signed = (b.Info() & types.IsUnsigned) == 0 - switch b.Kind() { - case types.Int8, types.Uint8: - maxBytes = 1 - case types.Int16, types.Uint16: - maxBytes = 2 - case types.Int32, types.Uint32: - maxBytes = 4 - default: - maxBytes = 8 - } - - return -} - -func (r *importReader) mpint(b *types.Basic) constant.Value { - signed, maxBytes := intSize(b) - - maxSmall := 256 - maxBytes - if signed { - maxSmall = 256 - 2*maxBytes - } - if maxBytes == 1 { - maxSmall = 256 - } - - n, _ := r.declReader.ReadByte() - if uint(n) < maxSmall { - v := int64(n) - if signed { - v >>= 1 - if n&1 != 0 { - v = ^v - } - } - return constant.MakeInt64(v) - } - - v := -n - if signed { - v = -(n &^ 1) >> 1 - } - if v < 1 || uint(v) > maxBytes { - errorf("weird decoding: %v, %v => %v", n, signed, v) - } - - buf := make([]byte, v) - io.ReadFull(&r.declReader, buf) - - // convert to little endian - // TODO(gri) go/constant should have a more direct conversion function - // (e.g., once it supports a big.Float based implementation) - for i, j := 0, len(buf)-1; i < j; i, j = i+1, j-1 { - buf[i], buf[j] = buf[j], buf[i] - } - - x := constant.MakeFromBytes(buf) - if signed && n&1 != 0 { - x = constant.UnaryOp(token.SUB, x, 0) - } - return x -} - -func (r *importReader) mpfloat(b *types.Basic) constant.Value { - x := r.mpint(b) - if constant.Sign(x) == 0 { - return x - } - - exp := r.int64() - switch { - case exp > 0: - x = constant.Shift(x, token.SHL, uint(exp)) - // Ensure that the imported Kind is Float, else this constant may run into - // bitsize limits on overlarge integers. Eventually we can instead adopt - // the approach of CL 288632, but that CL relies on go/constant APIs that - // were introduced in go1.13. - // - // TODO(rFindley): sync the logic here with tip Go once we no longer - // support go1.12. - x = constant.ToFloat(x) - case exp < 0: - d := constant.Shift(constant.MakeInt64(1), token.SHL, uint(-exp)) - x = constant.BinaryOp(x, token.QUO, d) - } - return x -} - -func (r *importReader) ident() string { - return r.string() -} - -func (r *importReader) qualifiedIdent() (*types.Package, string) { - name := r.string() - pkg := r.pkg() - return pkg, name -} - -func (r *importReader) pos() token.Pos { - if r.p.version >= iexportVersionPosCol { - r.posv1() - } else { - r.posv0() - } - - if r.prevFile == "" && r.prevLine == 0 && r.prevColumn == 0 { - return token.NoPos - } - return r.p.fake.pos(r.prevFile, int(r.prevLine), int(r.prevColumn)) -} - -func (r *importReader) posv0() { - delta := r.int64() - if delta != deltaNewFile { - r.prevLine += delta - } else if l := r.int64(); l == -1 { - r.prevLine += deltaNewFile - } else { - r.prevFile = r.string() - r.prevLine = l - } -} - -func (r *importReader) posv1() { - delta := r.int64() - r.prevColumn += delta >> 1 - if delta&1 != 0 { - delta = r.int64() - r.prevLine += delta >> 1 - if delta&1 != 0 { - r.prevFile = r.string() - } - } -} - -func (r *importReader) typ() types.Type { - return r.p.typAt(r.uint64(), nil) -} - -func isInterface(t types.Type) bool { - _, ok := t.(*types.Interface) - return ok -} - -func (r *importReader) pkg() *types.Package { return r.p.pkgAt(r.uint64()) } -func (r *importReader) string() string { return r.p.stringAt(r.uint64()) } - -func (r *importReader) doType(base *types.Named) (res types.Type) { - k := r.kind() - if debug { - r.p.trace("importing type %d (base: %s)", k, base) - r.p.indent++ - defer func() { - r.p.indent-- - r.p.trace("=> %s", res) - }() - } - switch k { - default: - errorf("unexpected kind tag in %q: %v", r.p.ipath, k) - return nil - - case definedType: - pkg, name := r.qualifiedIdent() - r.p.doDecl(pkg, name) - return pkg.Scope().Lookup(name).(*types.TypeName).Type() - case pointerType: - return types.NewPointer(r.typ()) - case sliceType: - return types.NewSlice(r.typ()) - case arrayType: - n := r.uint64() - return types.NewArray(r.typ(), int64(n)) - case chanType: - dir := chanDir(int(r.uint64())) - return types.NewChan(dir, r.typ()) - case mapType: - return types.NewMap(r.typ(), r.typ()) - case signatureType: - r.currPkg = r.pkg() - return r.signature(nil, nil, nil) - - case structType: - r.currPkg = r.pkg() - - fields := make([]*types.Var, r.uint64()) - tags := make([]string, len(fields)) - for i := range fields { - fpos := r.pos() - fname := r.ident() - ftyp := r.typ() - emb := r.bool() - tag := r.string() - - fields[i] = types.NewField(fpos, r.currPkg, fname, ftyp, emb) - tags[i] = tag - } - return types.NewStruct(fields, tags) - - case interfaceType: - r.currPkg = r.pkg() - - embeddeds := make([]types.Type, r.uint64()) - for i := range embeddeds { - _ = r.pos() - embeddeds[i] = r.typ() - } - - methods := make([]*types.Func, r.uint64()) - for i := range methods { - mpos := r.pos() - mname := r.ident() - - // TODO(mdempsky): Matches bimport.go, but I - // don't agree with this. - var recv *types.Var - if base != nil { - recv = types.NewVar(token.NoPos, r.currPkg, "", base) - } - - msig := r.signature(recv, nil, nil) - methods[i] = types.NewFunc(mpos, r.currPkg, mname, msig) - } - - typ := newInterface(methods, embeddeds) - r.p.interfaceList = append(r.p.interfaceList, typ) - return typ - - case typeParamType: - if r.p.version < iexportVersionGenerics { - errorf("unexpected type param type") - } - pkg, name := r.qualifiedIdent() - id := ident{pkg.Name(), name} - if t, ok := r.p.tparamIndex[id]; ok { - // We're already in the process of importing this typeparam. - return t - } - // Otherwise, import the definition of the typeparam now. - r.p.doDecl(pkg, name) - return r.p.tparamIndex[id] - - case instanceType: - if r.p.version < iexportVersionGenerics { - errorf("unexpected instantiation type") - } - // pos does not matter for instances: they are positioned on the original - // type. - _ = r.pos() - len := r.uint64() - targs := make([]types.Type, len) - for i := range targs { - targs[i] = r.typ() - } - baseType := r.typ() - // The imported instantiated type doesn't include any methods, so - // we must always use the methods of the base (orig) type. - // TODO provide a non-nil *Environment - t, _ := typeparams.Instantiate(nil, baseType, targs, false) - return t - - case unionType: - if r.p.version < iexportVersionGenerics { - errorf("unexpected instantiation type") - } - terms := make([]*typeparams.Term, r.uint64()) - for i := range terms { - terms[i] = typeparams.NewTerm(r.bool(), r.typ()) - } - return typeparams.NewUnion(terms) - } -} - -func (r *importReader) kind() itag { - return itag(r.uint64()) -} - -func (r *importReader) signature(recv *types.Var, rparams []*typeparams.TypeParam, tparams []*typeparams.TypeParam) *types.Signature { - params := r.paramList() - results := r.paramList() - variadic := params.Len() > 0 && r.bool() - return typeparams.NewSignatureType(recv, rparams, tparams, params, results, variadic) -} - -func (r *importReader) tparamList() []*typeparams.TypeParam { - n := r.uint64() - if n == 0 { - return nil - } - xs := make([]*typeparams.TypeParam, n) - for i := range xs { - // Note: the standard library importer is tolerant of nil types here, - // though would panic in SetTypeParams. - xs[i] = r.typ().(*typeparams.TypeParam) - } - return xs -} - -func (r *importReader) paramList() *types.Tuple { - xs := make([]*types.Var, r.uint64()) - for i := range xs { - xs[i] = r.param() - } - return types.NewTuple(xs...) -} - -func (r *importReader) param() *types.Var { - pos := r.pos() - name := r.ident() - typ := r.typ() - return types.NewParam(pos, r.currPkg, name, typ) -} - -func (r *importReader) bool() bool { - return r.uint64() != 0 -} - -func (r *importReader) int64() int64 { - n, err := binary.ReadVarint(&r.declReader) - if err != nil { - errorf("readVarint: %v", err) - } - return n -} - -func (r *importReader) uint64() uint64 { - n, err := binary.ReadUvarint(&r.declReader) - if err != nil { - errorf("readUvarint: %v", err) - } - return n -} - -func (r *importReader) byte() byte { - x, err := r.declReader.ReadByte() - if err != nil { - errorf("declReader.ReadByte: %v", err) - } - return x -} - -func baseType(typ types.Type) *types.Named { - // pointer receivers are never types.Named types - if p, _ := typ.(*types.Pointer); p != nil { - typ = p.Elem() - } - // receiver base types are always (possibly generic) types.Named types - n, _ := typ.(*types.Named) - return n -} diff --git a/vendor/golang.org/x/tools/go/internal/gcimporter/newInterface10.go b/vendor/golang.org/x/tools/go/internal/gcimporter/newInterface10.go deleted file mode 100644 index 8b163e3d0..000000000 --- a/vendor/golang.org/x/tools/go/internal/gcimporter/newInterface10.go +++ /dev/null @@ -1,22 +0,0 @@ -// Copyright 2018 The Go Authors. All rights reserved. -// Use of this source code is governed by a BSD-style -// license that can be found in the LICENSE file. - -//go:build !go1.11 -// +build !go1.11 - -package gcimporter - -import "go/types" - -func newInterface(methods []*types.Func, embeddeds []types.Type) *types.Interface { - named := make([]*types.Named, len(embeddeds)) - for i, e := range embeddeds { - var ok bool - named[i], ok = e.(*types.Named) - if !ok { - panic("embedding of non-defined interfaces in interfaces is not supported before Go 1.11") - } - } - return types.NewInterface(methods, named) -} diff --git a/vendor/golang.org/x/tools/go/internal/gcimporter/newInterface11.go b/vendor/golang.org/x/tools/go/internal/gcimporter/newInterface11.go deleted file mode 100644 index 49984f40f..000000000 --- a/vendor/golang.org/x/tools/go/internal/gcimporter/newInterface11.go +++ /dev/null @@ -1,14 +0,0 @@ -// Copyright 2018 The Go Authors. All rights reserved. -// Use of this source code is governed by a BSD-style -// license that can be found in the LICENSE file. - -//go:build go1.11 -// +build go1.11 - -package gcimporter - -import "go/types" - -func newInterface(methods []*types.Func, embeddeds []types.Type) *types.Interface { - return types.NewInterfaceType(methods, embeddeds) -} diff --git a/vendor/golang.org/x/tools/go/internal/gcimporter/support_go117.go b/vendor/golang.org/x/tools/go/internal/gcimporter/support_go117.go deleted file mode 100644 index d892273ef..000000000 --- a/vendor/golang.org/x/tools/go/internal/gcimporter/support_go117.go +++ /dev/null @@ -1,16 +0,0 @@ -// Copyright 2021 The Go Authors. All rights reserved. -// Use of this source code is governed by a BSD-style -// license that can be found in the LICENSE file. - -//go:build !go1.18 -// +build !go1.18 - -package gcimporter - -import "go/types" - -const iexportVersion = iexportVersionGo1_11 - -func additionalPredeclared() []types.Type { - return nil -} diff --git a/vendor/golang.org/x/tools/go/internal/gcimporter/support_go118.go b/vendor/golang.org/x/tools/go/internal/gcimporter/support_go118.go deleted file mode 100644 index a99384323..000000000 --- a/vendor/golang.org/x/tools/go/internal/gcimporter/support_go118.go +++ /dev/null @@ -1,23 +0,0 @@ -// Copyright 2021 The Go Authors. All rights reserved. -// Use of this source code is governed by a BSD-style -// license that can be found in the LICENSE file. - -//go:build go1.18 -// +build go1.18 - -package gcimporter - -import "go/types" - -const iexportVersion = iexportVersionGenerics - -// additionalPredeclared returns additional predeclared types in go.1.18. -func additionalPredeclared() []types.Type { - return []types.Type{ - // comparable - types.Universe.Lookup("comparable").Type(), - - // any - types.Universe.Lookup("any").Type(), - } -} diff --git a/vendor/golang.org/x/tools/go/internal/packagesdriver/sizes.go b/vendor/golang.org/x/tools/go/internal/packagesdriver/sizes.go deleted file mode 100644 index 18a002f82..000000000 --- a/vendor/golang.org/x/tools/go/internal/packagesdriver/sizes.go +++ /dev/null @@ -1,49 +0,0 @@ -// Copyright 2018 The Go Authors. All rights reserved. -// Use of this source code is governed by a BSD-style -// license that can be found in the LICENSE file. - -// Package packagesdriver fetches type sizes for go/packages and go/analysis. -package packagesdriver - -import ( - "context" - "fmt" - "go/types" - "strings" - - "golang.org/x/tools/internal/gocommand" -) - -var debug = false - -func GetSizesGolist(ctx context.Context, inv gocommand.Invocation, gocmdRunner *gocommand.Runner) (types.Sizes, error) { - inv.Verb = "list" - inv.Args = []string{"-f", "{{context.GOARCH}} {{context.Compiler}}", "--", "unsafe"} - stdout, stderr, friendlyErr, rawErr := gocmdRunner.RunRaw(ctx, inv) - var goarch, compiler string - if rawErr != nil { - if rawErrMsg := rawErr.Error(); strings.Contains(rawErrMsg, "cannot find main module") || strings.Contains(rawErrMsg, "go.mod file not found") { - // User's running outside of a module. All bets are off. Get GOARCH and guess compiler is gc. - // TODO(matloob): Is this a problem in practice? - inv.Verb = "env" - inv.Args = []string{"GOARCH"} - envout, enverr := gocmdRunner.Run(ctx, inv) - if enverr != nil { - return nil, enverr - } - goarch = strings.TrimSpace(envout.String()) - compiler = "gc" - } else { - return nil, friendlyErr - } - } else { - fields := strings.Fields(stdout.String()) - if len(fields) < 2 { - return nil, fmt.Errorf("could not parse GOARCH and Go compiler in format \"<GOARCH> <compiler>\":\nstdout: <<%s>>\nstderr: <<%s>>", - stdout.String(), stderr.String()) - } - goarch = fields[0] - compiler = fields[1] - } - return types.SizesFor(compiler, goarch), nil -} diff --git a/vendor/golang.org/x/tools/go/packages/doc.go b/vendor/golang.org/x/tools/go/packages/doc.go deleted file mode 100644 index 4bfe28a51..000000000 --- a/vendor/golang.org/x/tools/go/packages/doc.go +++ /dev/null @@ -1,221 +0,0 @@ -// Copyright 2018 The Go Authors. All rights reserved. -// Use of this source code is governed by a BSD-style -// license that can be found in the LICENSE file. - -/* -Package packages loads Go packages for inspection and analysis. - -The Load function takes as input a list of patterns and return a list of Package -structs describing individual packages matched by those patterns. -The LoadMode controls the amount of detail in the loaded packages. - -Load passes most patterns directly to the underlying build tool, -but all patterns with the prefix "query=", where query is a -non-empty string of letters from [a-z], are reserved and may be -interpreted as query operators. - -Two query operators are currently supported: "file" and "pattern". - -The query "file=path/to/file.go" matches the package or packages enclosing -the Go source file path/to/file.go. For example "file=~/go/src/fmt/print.go" -might return the packages "fmt" and "fmt [fmt.test]". - -The query "pattern=string" causes "string" to be passed directly to -the underlying build tool. In most cases this is unnecessary, -but an application can use Load("pattern=" + x) as an escaping mechanism -to ensure that x is not interpreted as a query operator if it contains '='. - -All other query operators are reserved for future use and currently -cause Load to report an error. - -The Package struct provides basic information about the package, including - - - ID, a unique identifier for the package in the returned set; - - GoFiles, the names of the package's Go source files; - - Imports, a map from source import strings to the Packages they name; - - Types, the type information for the package's exported symbols; - - Syntax, the parsed syntax trees for the package's source code; and - - TypeInfo, the result of a complete type-check of the package syntax trees. - -(See the documentation for type Package for the complete list of fields -and more detailed descriptions.) - -For example, - - Load(nil, "bytes", "unicode...") - -returns four Package structs describing the standard library packages -bytes, unicode, unicode/utf16, and unicode/utf8. Note that one pattern -can match multiple packages and that a package might be matched by -multiple patterns: in general it is not possible to determine which -packages correspond to which patterns. - -Note that the list returned by Load contains only the packages matched -by the patterns. Their dependencies can be found by walking the import -graph using the Imports fields. - -The Load function can be configured by passing a pointer to a Config as -the first argument. A nil Config is equivalent to the zero Config, which -causes Load to run in LoadFiles mode, collecting minimal information. -See the documentation for type Config for details. - -As noted earlier, the Config.Mode controls the amount of detail -reported about the loaded packages. See the documentation for type LoadMode -for details. - -Most tools should pass their command-line arguments (after any flags) -uninterpreted to the loader, so that the loader can interpret them -according to the conventions of the underlying build system. -See the Example function for typical usage. - -*/ -package packages // import "golang.org/x/tools/go/packages" - -/* - -Motivation and design considerations - -The new package's design solves problems addressed by two existing -packages: go/build, which locates and describes packages, and -golang.org/x/tools/go/loader, which loads, parses and type-checks them. -The go/build.Package structure encodes too much of the 'go build' way -of organizing projects, leaving us in need of a data type that describes a -package of Go source code independent of the underlying build system. -We wanted something that works equally well with go build and vgo, and -also other build systems such as Bazel and Blaze, making it possible to -construct analysis tools that work in all these environments. -Tools such as errcheck and staticcheck were essentially unavailable to -the Go community at Google, and some of Google's internal tools for Go -are unavailable externally. -This new package provides a uniform way to obtain package metadata by -querying each of these build systems, optionally supporting their -preferred command-line notations for packages, so that tools integrate -neatly with users' build environments. The Metadata query function -executes an external query tool appropriate to the current workspace. - -Loading packages always returns the complete import graph "all the way down", -even if all you want is information about a single package, because the query -mechanisms of all the build systems we currently support ({go,vgo} list, and -blaze/bazel aspect-based query) cannot provide detailed information -about one package without visiting all its dependencies too, so there is -no additional asymptotic cost to providing transitive information. -(This property might not be true of a hypothetical 5th build system.) - -In calls to TypeCheck, all initial packages, and any package that -transitively depends on one of them, must be loaded from source. -Consider A->B->C->D->E: if A,C are initial, A,B,C must be loaded from -source; D may be loaded from export data, and E may not be loaded at all -(though it's possible that D's export data mentions it, so a -types.Package may be created for it and exposed.) - -The old loader had a feature to suppress type-checking of function -bodies on a per-package basis, primarily intended to reduce the work of -obtaining type information for imported packages. Now that imports are -satisfied by export data, the optimization no longer seems necessary. - -Despite some early attempts, the old loader did not exploit export data, -instead always using the equivalent of WholeProgram mode. This was due -to the complexity of mixing source and export data packages (now -resolved by the upward traversal mentioned above), and because export data -files were nearly always missing or stale. Now that 'go build' supports -caching, all the underlying build systems can guarantee to produce -export data in a reasonable (amortized) time. - -Test "main" packages synthesized by the build system are now reported as -first-class packages, avoiding the need for clients (such as go/ssa) to -reinvent this generation logic. - -One way in which go/packages is simpler than the old loader is in its -treatment of in-package tests. In-package tests are packages that -consist of all the files of the library under test, plus the test files. -The old loader constructed in-package tests by a two-phase process of -mutation called "augmentation": first it would construct and type check -all the ordinary library packages and type-check the packages that -depend on them; then it would add more (test) files to the package and -type-check again. This two-phase approach had four major problems: -1) in processing the tests, the loader modified the library package, - leaving no way for a client application to see both the test - package and the library package; one would mutate into the other. -2) because test files can declare additional methods on types defined in - the library portion of the package, the dispatch of method calls in - the library portion was affected by the presence of the test files. - This should have been a clue that the packages were logically - different. -3) this model of "augmentation" assumed at most one in-package test - per library package, which is true of projects using 'go build', - but not other build systems. -4) because of the two-phase nature of test processing, all packages that - import the library package had to be processed before augmentation, - forcing a "one-shot" API and preventing the client from calling Load - in several times in sequence as is now possible in WholeProgram mode. - (TypeCheck mode has a similar one-shot restriction for a different reason.) - -Early drafts of this package supported "multi-shot" operation. -Although it allowed clients to make a sequence of calls (or concurrent -calls) to Load, building up the graph of Packages incrementally, -it was of marginal value: it complicated the API -(since it allowed some options to vary across calls but not others), -it complicated the implementation, -it cannot be made to work in Types mode, as explained above, -and it was less efficient than making one combined call (when this is possible). -Among the clients we have inspected, none made multiple calls to load -but could not be easily and satisfactorily modified to make only a single call. -However, applications changes may be required. -For example, the ssadump command loads the user-specified packages -and in addition the runtime package. It is tempting to simply append -"runtime" to the user-provided list, but that does not work if the user -specified an ad-hoc package such as [a.go b.go]. -Instead, ssadump no longer requests the runtime package, -but seeks it among the dependencies of the user-specified packages, -and emits an error if it is not found. - -Overlays: The Overlay field in the Config allows providing alternate contents -for Go source files, by providing a mapping from file path to contents. -go/packages will pull in new imports added in overlay files when go/packages -is run in LoadImports mode or greater. -Overlay support for the go list driver isn't complete yet: if the file doesn't -exist on disk, it will only be recognized in an overlay if it is a non-test file -and the package would be reported even without the overlay. - -Questions & Tasks - -- Add GOARCH/GOOS? - They are not portable concepts, but could be made portable. - Our goal has been to allow users to express themselves using the conventions - of the underlying build system: if the build system honors GOARCH - during a build and during a metadata query, then so should - applications built atop that query mechanism. - Conversely, if the target architecture of the build is determined by - command-line flags, the application can pass the relevant - flags through to the build system using a command such as: - myapp -query_flag="--cpu=amd64" -query_flag="--os=darwin" - However, this approach is low-level, unwieldy, and non-portable. - GOOS and GOARCH seem important enough to warrant a dedicated option. - -- How should we handle partial failures such as a mixture of good and - malformed patterns, existing and non-existent packages, successful and - failed builds, import failures, import cycles, and so on, in a call to - Load? - -- Support bazel, blaze, and go1.10 list, not just go1.11 list. - -- Handle (and test) various partial success cases, e.g. - a mixture of good packages and: - invalid patterns - nonexistent packages - empty packages - packages with malformed package or import declarations - unreadable files - import cycles - other parse errors - type errors - Make sure we record errors at the correct place in the graph. - -- Missing packages among initial arguments are not reported. - Return bogus packages for them, like golist does. - -- "undeclared name" errors (for example) are reported out of source file - order. I suspect this is due to the breadth-first resolution now used - by go/types. Is that a bug? Discuss with gri. - -*/ diff --git a/vendor/golang.org/x/tools/go/packages/external.go b/vendor/golang.org/x/tools/go/packages/external.go deleted file mode 100644 index 7242a0a7d..000000000 --- a/vendor/golang.org/x/tools/go/packages/external.go +++ /dev/null @@ -1,101 +0,0 @@ -// Copyright 2018 The Go Authors. All rights reserved. -// Use of this source code is governed by a BSD-style -// license that can be found in the LICENSE file. - -// This file enables an external tool to intercept package requests. -// If the tool is present then its results are used in preference to -// the go list command. - -package packages - -import ( - "bytes" - "encoding/json" - "fmt" - exec "golang.org/x/sys/execabs" - "os" - "strings" -) - -// The Driver Protocol -// -// The driver, given the inputs to a call to Load, returns metadata about the packages specified. -// This allows for different build systems to support go/packages by telling go/packages how the -// packages' source is organized. -// The driver is a binary, either specified by the GOPACKAGESDRIVER environment variable or in -// the path as gopackagesdriver. It's given the inputs to load in its argv. See the package -// documentation in doc.go for the full description of the patterns that need to be supported. -// A driver receives as a JSON-serialized driverRequest struct in standard input and will -// produce a JSON-serialized driverResponse (see definition in packages.go) in its standard output. - -// driverRequest is used to provide the portion of Load's Config that is needed by a driver. -type driverRequest struct { - Mode LoadMode `json:"mode"` - // Env specifies the environment the underlying build system should be run in. - Env []string `json:"env"` - // BuildFlags are flags that should be passed to the underlying build system. - BuildFlags []string `json:"build_flags"` - // Tests specifies whether the patterns should also return test packages. - Tests bool `json:"tests"` - // Overlay maps file paths (relative to the driver's working directory) to the byte contents - // of overlay files. - Overlay map[string][]byte `json:"overlay"` -} - -// findExternalDriver returns the file path of a tool that supplies -// the build system package structure, or "" if not found." -// If GOPACKAGESDRIVER is set in the environment findExternalTool returns its -// value, otherwise it searches for a binary named gopackagesdriver on the PATH. -func findExternalDriver(cfg *Config) driver { - const toolPrefix = "GOPACKAGESDRIVER=" - tool := "" - for _, env := range cfg.Env { - if val := strings.TrimPrefix(env, toolPrefix); val != env { - tool = val - } - } - if tool != "" && tool == "off" { - return nil - } - if tool == "" { - var err error - tool, err = exec.LookPath("gopackagesdriver") - if err != nil { - return nil - } - } - return func(cfg *Config, words ...string) (*driverResponse, error) { - req, err := json.Marshal(driverRequest{ - Mode: cfg.Mode, - Env: cfg.Env, - BuildFlags: cfg.BuildFlags, - Tests: cfg.Tests, - Overlay: cfg.Overlay, - }) - if err != nil { - return nil, fmt.Errorf("failed to encode message to driver tool: %v", err) - } - - buf := new(bytes.Buffer) - stderr := new(bytes.Buffer) - cmd := exec.CommandContext(cfg.Context, tool, words...) - cmd.Dir = cfg.Dir - cmd.Env = cfg.Env - cmd.Stdin = bytes.NewReader(req) - cmd.Stdout = buf - cmd.Stderr = stderr - - if err := cmd.Run(); err != nil { - return nil, fmt.Errorf("%v: %v: %s", tool, err, cmd.Stderr) - } - if len(stderr.Bytes()) != 0 && os.Getenv("GOPACKAGESPRINTDRIVERERRORS") != "" { - fmt.Fprintf(os.Stderr, "%s stderr: <<%s>>\n", cmdDebugStr(cmd), stderr) - } - - var response driverResponse - if err := json.Unmarshal(buf.Bytes(), &response); err != nil { - return nil, err - } - return &response, nil - } -} diff --git a/vendor/golang.org/x/tools/go/packages/golist.go b/vendor/golang.org/x/tools/go/packages/golist.go deleted file mode 100644 index 0e1e7f11f..000000000 --- a/vendor/golang.org/x/tools/go/packages/golist.go +++ /dev/null @@ -1,1099 +0,0 @@ -// Copyright 2018 The Go Authors. All rights reserved. -// Use of this source code is governed by a BSD-style -// license that can be found in the LICENSE file. - -package packages - -import ( - "bytes" - "context" - "encoding/json" - "fmt" - "go/types" - "io/ioutil" - "log" - "os" - "path" - "path/filepath" - "reflect" - "sort" - "strconv" - "strings" - "sync" - "unicode" - - exec "golang.org/x/sys/execabs" - "golang.org/x/tools/go/internal/packagesdriver" - "golang.org/x/tools/internal/gocommand" - "golang.org/x/tools/internal/packagesinternal" - "golang.org/x/xerrors" -) - -// debug controls verbose logging. -var debug, _ = strconv.ParseBool(os.Getenv("GOPACKAGESDEBUG")) - -// A goTooOldError reports that the go command -// found by exec.LookPath is too old to use the new go list behavior. -type goTooOldError struct { - error -} - -// responseDeduper wraps a driverResponse, deduplicating its contents. -type responseDeduper struct { - seenRoots map[string]bool - seenPackages map[string]*Package - dr *driverResponse -} - -func newDeduper() *responseDeduper { - return &responseDeduper{ - dr: &driverResponse{}, - seenRoots: map[string]bool{}, - seenPackages: map[string]*Package{}, - } -} - -// addAll fills in r with a driverResponse. -func (r *responseDeduper) addAll(dr *driverResponse) { - for _, pkg := range dr.Packages { - r.addPackage(pkg) - } - for _, root := range dr.Roots { - r.addRoot(root) - } -} - -func (r *responseDeduper) addPackage(p *Package) { - if r.seenPackages[p.ID] != nil { - return - } - r.seenPackages[p.ID] = p - r.dr.Packages = append(r.dr.Packages, p) -} - -func (r *responseDeduper) addRoot(id string) { - if r.seenRoots[id] { - return - } - r.seenRoots[id] = true - r.dr.Roots = append(r.dr.Roots, id) -} - -type golistState struct { - cfg *Config - ctx context.Context - - envOnce sync.Once - goEnvError error - goEnv map[string]string - - rootsOnce sync.Once - rootDirsError error - rootDirs map[string]string - - goVersionOnce sync.Once - goVersionError error - goVersion int // The X in Go 1.X. - - // vendorDirs caches the (non)existence of vendor directories. - vendorDirs map[string]bool -} - -// getEnv returns Go environment variables. Only specific variables are -// populated -- computing all of them is slow. -func (state *golistState) getEnv() (map[string]string, error) { - state.envOnce.Do(func() { - var b *bytes.Buffer - b, state.goEnvError = state.invokeGo("env", "-json", "GOMOD", "GOPATH") - if state.goEnvError != nil { - return - } - - state.goEnv = make(map[string]string) - decoder := json.NewDecoder(b) - if state.goEnvError = decoder.Decode(&state.goEnv); state.goEnvError != nil { - return - } - }) - return state.goEnv, state.goEnvError -} - -// mustGetEnv is a convenience function that can be used if getEnv has already succeeded. -func (state *golistState) mustGetEnv() map[string]string { - env, err := state.getEnv() - if err != nil { - panic(fmt.Sprintf("mustGetEnv: %v", err)) - } - return env -} - -// goListDriver uses the go list command to interpret the patterns and produce -// the build system package structure. -// See driver for more details. -func goListDriver(cfg *Config, patterns ...string) (*driverResponse, error) { - // Make sure that any asynchronous go commands are killed when we return. - parentCtx := cfg.Context - if parentCtx == nil { - parentCtx = context.Background() - } - ctx, cancel := context.WithCancel(parentCtx) - defer cancel() - - response := newDeduper() - - state := &golistState{ - cfg: cfg, - ctx: ctx, - vendorDirs: map[string]bool{}, - } - - // Fill in response.Sizes asynchronously if necessary. - var sizeserr error - var sizeswg sync.WaitGroup - if cfg.Mode&NeedTypesSizes != 0 || cfg.Mode&NeedTypes != 0 { - sizeswg.Add(1) - go func() { - var sizes types.Sizes - sizes, sizeserr = packagesdriver.GetSizesGolist(ctx, state.cfgInvocation(), cfg.gocmdRunner) - // types.SizesFor always returns nil or a *types.StdSizes. - response.dr.Sizes, _ = sizes.(*types.StdSizes) - sizeswg.Done() - }() - } - - // Determine files requested in contains patterns - var containFiles []string - restPatterns := make([]string, 0, len(patterns)) - // Extract file= and other [querytype]= patterns. Report an error if querytype - // doesn't exist. -extractQueries: - for _, pattern := range patterns { - eqidx := strings.Index(pattern, "=") - if eqidx < 0 { - restPatterns = append(restPatterns, pattern) - } else { - query, value := pattern[:eqidx], pattern[eqidx+len("="):] - switch query { - case "file": - containFiles = append(containFiles, value) - case "pattern": - restPatterns = append(restPatterns, value) - case "": // not a reserved query - restPatterns = append(restPatterns, pattern) - default: - for _, rune := range query { - if rune < 'a' || rune > 'z' { // not a reserved query - restPatterns = append(restPatterns, pattern) - continue extractQueries - } - } - // Reject all other patterns containing "=" - return nil, fmt.Errorf("invalid query type %q in query pattern %q", query, pattern) - } - } - } - - // See if we have any patterns to pass through to go list. Zero initial - // patterns also requires a go list call, since it's the equivalent of - // ".". - if len(restPatterns) > 0 || len(patterns) == 0 { - dr, err := state.createDriverResponse(restPatterns...) - if err != nil { - return nil, err - } - response.addAll(dr) - } - - if len(containFiles) != 0 { - if err := state.runContainsQueries(response, containFiles); err != nil { - return nil, err - } - } - - // Only use go/packages' overlay processing if we're using a Go version - // below 1.16. Otherwise, go list handles it. - if goVersion, err := state.getGoVersion(); err == nil && goVersion < 16 { - modifiedPkgs, needPkgs, err := state.processGolistOverlay(response) - if err != nil { - return nil, err - } - - var containsCandidates []string - if len(containFiles) > 0 { - containsCandidates = append(containsCandidates, modifiedPkgs...) - containsCandidates = append(containsCandidates, needPkgs...) - } - if err := state.addNeededOverlayPackages(response, needPkgs); err != nil { - return nil, err - } - // Check candidate packages for containFiles. - if len(containFiles) > 0 { - for _, id := range containsCandidates { - pkg, ok := response.seenPackages[id] - if !ok { - response.addPackage(&Package{ - ID: id, - Errors: []Error{{ - Kind: ListError, - Msg: fmt.Sprintf("package %s expected but not seen", id), - }}, - }) - continue - } - for _, f := range containFiles { - for _, g := range pkg.GoFiles { - if sameFile(f, g) { - response.addRoot(id) - } - } - } - } - } - // Add root for any package that matches a pattern. This applies only to - // packages that are modified by overlays, since they are not added as - // roots automatically. - for _, pattern := range restPatterns { - match := matchPattern(pattern) - for _, pkgID := range modifiedPkgs { - pkg, ok := response.seenPackages[pkgID] - if !ok { - continue - } - if match(pkg.PkgPath) { - response.addRoot(pkg.ID) - } - } - } - } - - sizeswg.Wait() - if sizeserr != nil { - return nil, sizeserr - } - return response.dr, nil -} - -func (state *golistState) addNeededOverlayPackages(response *responseDeduper, pkgs []string) error { - if len(pkgs) == 0 { - return nil - } - dr, err := state.createDriverResponse(pkgs...) - if err != nil { - return err - } - for _, pkg := range dr.Packages { - response.addPackage(pkg) - } - _, needPkgs, err := state.processGolistOverlay(response) - if err != nil { - return err - } - return state.addNeededOverlayPackages(response, needPkgs) -} - -func (state *golistState) runContainsQueries(response *responseDeduper, queries []string) error { - for _, query := range queries { - // TODO(matloob): Do only one query per directory. - fdir := filepath.Dir(query) - // Pass absolute path of directory to go list so that it knows to treat it as a directory, - // not a package path. - pattern, err := filepath.Abs(fdir) - if err != nil { - return fmt.Errorf("could not determine absolute path of file= query path %q: %v", query, err) - } - dirResponse, err := state.createDriverResponse(pattern) - - // If there was an error loading the package, or the package is returned - // with errors, try to load the file as an ad-hoc package. - // Usually the error will appear in a returned package, but may not if we're - // in module mode and the ad-hoc is located outside a module. - if err != nil || len(dirResponse.Packages) == 1 && len(dirResponse.Packages[0].GoFiles) == 0 && - len(dirResponse.Packages[0].Errors) == 1 { - var queryErr error - if dirResponse, queryErr = state.adhocPackage(pattern, query); queryErr != nil { - return err // return the original error - } - } - isRoot := make(map[string]bool, len(dirResponse.Roots)) - for _, root := range dirResponse.Roots { - isRoot[root] = true - } - for _, pkg := range dirResponse.Packages { - // Add any new packages to the main set - // We don't bother to filter packages that will be dropped by the changes of roots, - // that will happen anyway during graph construction outside this function. - // Over-reporting packages is not a problem. - response.addPackage(pkg) - // if the package was not a root one, it cannot have the file - if !isRoot[pkg.ID] { - continue - } - for _, pkgFile := range pkg.GoFiles { - if filepath.Base(query) == filepath.Base(pkgFile) { - response.addRoot(pkg.ID) - break - } - } - } - } - return nil -} - -// adhocPackage attempts to load or construct an ad-hoc package for a given -// query, if the original call to the driver produced inadequate results. -func (state *golistState) adhocPackage(pattern, query string) (*driverResponse, error) { - response, err := state.createDriverResponse(query) - if err != nil { - return nil, err - } - // If we get nothing back from `go list`, - // try to make this file into its own ad-hoc package. - // TODO(rstambler): Should this check against the original response? - if len(response.Packages) == 0 { - response.Packages = append(response.Packages, &Package{ - ID: "command-line-arguments", - PkgPath: query, - GoFiles: []string{query}, - CompiledGoFiles: []string{query}, - Imports: make(map[string]*Package), - }) - response.Roots = append(response.Roots, "command-line-arguments") - } - // Handle special cases. - if len(response.Packages) == 1 { - // golang/go#33482: If this is a file= query for ad-hoc packages where - // the file only exists on an overlay, and exists outside of a module, - // add the file to the package and remove the errors. - if response.Packages[0].ID == "command-line-arguments" || - filepath.ToSlash(response.Packages[0].PkgPath) == filepath.ToSlash(query) { - if len(response.Packages[0].GoFiles) == 0 { - filename := filepath.Join(pattern, filepath.Base(query)) // avoid recomputing abspath - // TODO(matloob): check if the file is outside of a root dir? - for path := range state.cfg.Overlay { - if path == filename { - response.Packages[0].Errors = nil - response.Packages[0].GoFiles = []string{path} - response.Packages[0].CompiledGoFiles = []string{path} - } - } - } - } - } - return response, nil -} - -// Fields must match go list; -// see $GOROOT/src/cmd/go/internal/load/pkg.go. -type jsonPackage struct { - ImportPath string - Dir string - Name string - Export string - GoFiles []string - CompiledGoFiles []string - IgnoredGoFiles []string - IgnoredOtherFiles []string - CFiles []string - CgoFiles []string - CXXFiles []string - MFiles []string - HFiles []string - FFiles []string - SFiles []string - SwigFiles []string - SwigCXXFiles []string - SysoFiles []string - Imports []string - ImportMap map[string]string - Deps []string - Module *Module - TestGoFiles []string - TestImports []string - XTestGoFiles []string - XTestImports []string - ForTest string // q in a "p [q.test]" package, else "" - DepOnly bool - - Error *packagesinternal.PackageError - DepsErrors []*packagesinternal.PackageError -} - -type jsonPackageError struct { - ImportStack []string - Pos string - Err string -} - -func otherFiles(p *jsonPackage) [][]string { - return [][]string{p.CFiles, p.CXXFiles, p.MFiles, p.HFiles, p.FFiles, p.SFiles, p.SwigFiles, p.SwigCXXFiles, p.SysoFiles} -} - -// createDriverResponse uses the "go list" command to expand the pattern -// words and return a response for the specified packages. -func (state *golistState) createDriverResponse(words ...string) (*driverResponse, error) { - // go list uses the following identifiers in ImportPath and Imports: - // - // "p" -- importable package or main (command) - // "q.test" -- q's test executable - // "p [q.test]" -- variant of p as built for q's test executable - // "q_test [q.test]" -- q's external test package - // - // The packages p that are built differently for a test q.test - // are q itself, plus any helpers used by the external test q_test, - // typically including "testing" and all its dependencies. - - // Run "go list" for complete - // information on the specified packages. - buf, err := state.invokeGo("list", golistargs(state.cfg, words)...) - if err != nil { - return nil, err - } - seen := make(map[string]*jsonPackage) - pkgs := make(map[string]*Package) - additionalErrors := make(map[string][]Error) - // Decode the JSON and convert it to Package form. - var response driverResponse - for dec := json.NewDecoder(buf); dec.More(); { - p := new(jsonPackage) - if err := dec.Decode(p); err != nil { - return nil, fmt.Errorf("JSON decoding failed: %v", err) - } - - if p.ImportPath == "" { - // The documentation for go list says that “[e]rroneous packages will have - // a non-empty ImportPath”. If for some reason it comes back empty, we - // prefer to error out rather than silently discarding data or handing - // back a package without any way to refer to it. - if p.Error != nil { - return nil, Error{ - Pos: p.Error.Pos, - Msg: p.Error.Err, - } - } - return nil, fmt.Errorf("package missing import path: %+v", p) - } - - // Work around https://golang.org/issue/33157: - // go list -e, when given an absolute path, will find the package contained at - // that directory. But when no package exists there, it will return a fake package - // with an error and the ImportPath set to the absolute path provided to go list. - // Try to convert that absolute path to what its package path would be if it's - // contained in a known module or GOPATH entry. This will allow the package to be - // properly "reclaimed" when overlays are processed. - if filepath.IsAbs(p.ImportPath) && p.Error != nil { - pkgPath, ok, err := state.getPkgPath(p.ImportPath) - if err != nil { - return nil, err - } - if ok { - p.ImportPath = pkgPath - } - } - - if old, found := seen[p.ImportPath]; found { - // If one version of the package has an error, and the other doesn't, assume - // that this is a case where go list is reporting a fake dependency variant - // of the imported package: When a package tries to invalidly import another - // package, go list emits a variant of the imported package (with the same - // import path, but with an error on it, and the package will have a - // DepError set on it). An example of when this can happen is for imports of - // main packages: main packages can not be imported, but they may be - // separately matched and listed by another pattern. - // See golang.org/issue/36188 for more details. - - // The plan is that eventually, hopefully in Go 1.15, the error will be - // reported on the importing package rather than the duplicate "fake" - // version of the imported package. Once all supported versions of Go - // have the new behavior this logic can be deleted. - // TODO(matloob): delete the workaround logic once all supported versions of - // Go return the errors on the proper package. - - // There should be exactly one version of a package that doesn't have an - // error. - if old.Error == nil && p.Error == nil { - if !reflect.DeepEqual(p, old) { - return nil, fmt.Errorf("internal error: go list gives conflicting information for package %v", p.ImportPath) - } - continue - } - - // Determine if this package's error needs to be bubbled up. - // This is a hack, and we expect for go list to eventually set the error - // on the package. - if old.Error != nil { - var errkind string - if strings.Contains(old.Error.Err, "not an importable package") { - errkind = "not an importable package" - } else if strings.Contains(old.Error.Err, "use of internal package") && strings.Contains(old.Error.Err, "not allowed") { - errkind = "use of internal package not allowed" - } - if errkind != "" { - if len(old.Error.ImportStack) < 1 { - return nil, fmt.Errorf(`internal error: go list gave a %q error with empty import stack`, errkind) - } - importingPkg := old.Error.ImportStack[len(old.Error.ImportStack)-1] - if importingPkg == old.ImportPath { - // Using an older version of Go which put this package itself on top of import - // stack, instead of the importer. Look for importer in second from top - // position. - if len(old.Error.ImportStack) < 2 { - return nil, fmt.Errorf(`internal error: go list gave a %q error with an import stack without importing package`, errkind) - } - importingPkg = old.Error.ImportStack[len(old.Error.ImportStack)-2] - } - additionalErrors[importingPkg] = append(additionalErrors[importingPkg], Error{ - Pos: old.Error.Pos, - Msg: old.Error.Err, - Kind: ListError, - }) - } - } - - // Make sure that if there's a version of the package without an error, - // that's the one reported to the user. - if old.Error == nil { - continue - } - - // This package will replace the old one at the end of the loop. - } - seen[p.ImportPath] = p - - pkg := &Package{ - Name: p.Name, - ID: p.ImportPath, - GoFiles: absJoin(p.Dir, p.GoFiles, p.CgoFiles), - CompiledGoFiles: absJoin(p.Dir, p.CompiledGoFiles), - OtherFiles: absJoin(p.Dir, otherFiles(p)...), - IgnoredFiles: absJoin(p.Dir, p.IgnoredGoFiles, p.IgnoredOtherFiles), - forTest: p.ForTest, - depsErrors: p.DepsErrors, - Module: p.Module, - } - - if (state.cfg.Mode&typecheckCgo) != 0 && len(p.CgoFiles) != 0 { - if len(p.CompiledGoFiles) > len(p.GoFiles) { - // We need the cgo definitions, which are in the first - // CompiledGoFile after the non-cgo ones. This is a hack but there - // isn't currently a better way to find it. We also need the pure - // Go files and unprocessed cgo files, all of which are already - // in pkg.GoFiles. - cgoTypes := p.CompiledGoFiles[len(p.GoFiles)] - pkg.CompiledGoFiles = append([]string{cgoTypes}, pkg.GoFiles...) - } else { - // golang/go#38990: go list silently fails to do cgo processing - pkg.CompiledGoFiles = nil - pkg.Errors = append(pkg.Errors, Error{ - Msg: "go list failed to return CompiledGoFiles. This may indicate failure to perform cgo processing; try building at the command line. See https://golang.org/issue/38990.", - Kind: ListError, - }) - } - } - - // Work around https://golang.org/issue/28749: - // cmd/go puts assembly, C, and C++ files in CompiledGoFiles. - // Filter out any elements of CompiledGoFiles that are also in OtherFiles. - // We have to keep this workaround in place until go1.12 is a distant memory. - if len(pkg.OtherFiles) > 0 { - other := make(map[string]bool, len(pkg.OtherFiles)) - for _, f := range pkg.OtherFiles { - other[f] = true - } - - out := pkg.CompiledGoFiles[:0] - for _, f := range pkg.CompiledGoFiles { - if other[f] { - continue - } - out = append(out, f) - } - pkg.CompiledGoFiles = out - } - - // Extract the PkgPath from the package's ID. - if i := strings.IndexByte(pkg.ID, ' '); i >= 0 { - pkg.PkgPath = pkg.ID[:i] - } else { - pkg.PkgPath = pkg.ID - } - - if pkg.PkgPath == "unsafe" { - pkg.GoFiles = nil // ignore fake unsafe.go file - } - - // Assume go list emits only absolute paths for Dir. - if p.Dir != "" && !filepath.IsAbs(p.Dir) { - log.Fatalf("internal error: go list returned non-absolute Package.Dir: %s", p.Dir) - } - - if p.Export != "" && !filepath.IsAbs(p.Export) { - pkg.ExportFile = filepath.Join(p.Dir, p.Export) - } else { - pkg.ExportFile = p.Export - } - - // imports - // - // Imports contains the IDs of all imported packages. - // ImportsMap records (path, ID) only where they differ. - ids := make(map[string]bool) - for _, id := range p.Imports { - ids[id] = true - } - pkg.Imports = make(map[string]*Package) - for path, id := range p.ImportMap { - pkg.Imports[path] = &Package{ID: id} // non-identity import - delete(ids, id) - } - for id := range ids { - if id == "C" { - continue - } - - pkg.Imports[id] = &Package{ID: id} // identity import - } - if !p.DepOnly { - response.Roots = append(response.Roots, pkg.ID) - } - - // Work around for pre-go.1.11 versions of go list. - // TODO(matloob): they should be handled by the fallback. - // Can we delete this? - if len(pkg.CompiledGoFiles) == 0 { - pkg.CompiledGoFiles = pkg.GoFiles - } - - // Temporary work-around for golang/go#39986. Parse filenames out of - // error messages. This happens if there are unrecoverable syntax - // errors in the source, so we can't match on a specific error message. - if err := p.Error; err != nil && state.shouldAddFilenameFromError(p) { - addFilenameFromPos := func(pos string) bool { - split := strings.Split(pos, ":") - if len(split) < 1 { - return false - } - filename := strings.TrimSpace(split[0]) - if filename == "" { - return false - } - if !filepath.IsAbs(filename) { - filename = filepath.Join(state.cfg.Dir, filename) - } - info, _ := os.Stat(filename) - if info == nil { - return false - } - pkg.CompiledGoFiles = append(pkg.CompiledGoFiles, filename) - pkg.GoFiles = append(pkg.GoFiles, filename) - return true - } - found := addFilenameFromPos(err.Pos) - // In some cases, go list only reports the error position in the - // error text, not the error position. One such case is when the - // file's package name is a keyword (see golang.org/issue/39763). - if !found { - addFilenameFromPos(err.Err) - } - } - - if p.Error != nil { - msg := strings.TrimSpace(p.Error.Err) // Trim to work around golang.org/issue/32363. - // Address golang.org/issue/35964 by appending import stack to error message. - if msg == "import cycle not allowed" && len(p.Error.ImportStack) != 0 { - msg += fmt.Sprintf(": import stack: %v", p.Error.ImportStack) - } - pkg.Errors = append(pkg.Errors, Error{ - Pos: p.Error.Pos, - Msg: msg, - Kind: ListError, - }) - } - - pkgs[pkg.ID] = pkg - } - - for id, errs := range additionalErrors { - if p, ok := pkgs[id]; ok { - p.Errors = append(p.Errors, errs...) - } - } - for _, pkg := range pkgs { - response.Packages = append(response.Packages, pkg) - } - sort.Slice(response.Packages, func(i, j int) bool { return response.Packages[i].ID < response.Packages[j].ID }) - - return &response, nil -} - -func (state *golistState) shouldAddFilenameFromError(p *jsonPackage) bool { - if len(p.GoFiles) > 0 || len(p.CompiledGoFiles) > 0 { - return false - } - - goV, err := state.getGoVersion() - if err != nil { - return false - } - - // On Go 1.14 and earlier, only add filenames from errors if the import stack is empty. - // The import stack behaves differently for these versions than newer Go versions. - if goV < 15 { - return len(p.Error.ImportStack) == 0 - } - - // On Go 1.15 and later, only parse filenames out of error if there's no import stack, - // or the current package is at the top of the import stack. This is not guaranteed - // to work perfectly, but should avoid some cases where files in errors don't belong to this - // package. - return len(p.Error.ImportStack) == 0 || p.Error.ImportStack[len(p.Error.ImportStack)-1] == p.ImportPath -} - -func (state *golistState) getGoVersion() (int, error) { - state.goVersionOnce.Do(func() { - state.goVersion, state.goVersionError = gocommand.GoVersion(state.ctx, state.cfgInvocation(), state.cfg.gocmdRunner) - }) - return state.goVersion, state.goVersionError -} - -// getPkgPath finds the package path of a directory if it's relative to a root -// directory. -func (state *golistState) getPkgPath(dir string) (string, bool, error) { - absDir, err := filepath.Abs(dir) - if err != nil { - return "", false, err - } - roots, err := state.determineRootDirs() - if err != nil { - return "", false, err - } - - for rdir, rpath := range roots { - // Make sure that the directory is in the module, - // to avoid creating a path relative to another module. - if !strings.HasPrefix(absDir, rdir) { - continue - } - // TODO(matloob): This doesn't properly handle symlinks. - r, err := filepath.Rel(rdir, dir) - if err != nil { - continue - } - if rpath != "" { - // We choose only one root even though the directory even it can belong in multiple modules - // or GOPATH entries. This is okay because we only need to work with absolute dirs when a - // file is missing from disk, for instance when gopls calls go/packages in an overlay. - // Once the file is saved, gopls, or the next invocation of the tool will get the correct - // result straight from golist. - // TODO(matloob): Implement module tiebreaking? - return path.Join(rpath, filepath.ToSlash(r)), true, nil - } - return filepath.ToSlash(r), true, nil - } - return "", false, nil -} - -// absJoin absolutizes and flattens the lists of files. -func absJoin(dir string, fileses ...[]string) (res []string) { - for _, files := range fileses { - for _, file := range files { - if !filepath.IsAbs(file) { - file = filepath.Join(dir, file) - } - res = append(res, file) - } - } - return res -} - -func golistargs(cfg *Config, words []string) []string { - const findFlags = NeedImports | NeedTypes | NeedSyntax | NeedTypesInfo - fullargs := []string{ - "-e", "-json", - fmt.Sprintf("-compiled=%t", cfg.Mode&(NeedCompiledGoFiles|NeedSyntax|NeedTypes|NeedTypesInfo|NeedTypesSizes) != 0), - fmt.Sprintf("-test=%t", cfg.Tests), - fmt.Sprintf("-export=%t", usesExportData(cfg)), - fmt.Sprintf("-deps=%t", cfg.Mode&NeedImports != 0), - // go list doesn't let you pass -test and -find together, - // probably because you'd just get the TestMain. - fmt.Sprintf("-find=%t", !cfg.Tests && cfg.Mode&findFlags == 0), - } - fullargs = append(fullargs, cfg.BuildFlags...) - fullargs = append(fullargs, "--") - fullargs = append(fullargs, words...) - return fullargs -} - -// cfgInvocation returns an Invocation that reflects cfg's settings. -func (state *golistState) cfgInvocation() gocommand.Invocation { - cfg := state.cfg - return gocommand.Invocation{ - BuildFlags: cfg.BuildFlags, - ModFile: cfg.modFile, - ModFlag: cfg.modFlag, - CleanEnv: cfg.Env != nil, - Env: cfg.Env, - Logf: cfg.Logf, - WorkingDir: cfg.Dir, - } -} - -// invokeGo returns the stdout of a go command invocation. -func (state *golistState) invokeGo(verb string, args ...string) (*bytes.Buffer, error) { - cfg := state.cfg - - inv := state.cfgInvocation() - - // For Go versions 1.16 and above, `go list` accepts overlays directly via - // the -overlay flag. Set it, if it's available. - // - // The check for "list" is not necessarily required, but we should avoid - // getting the go version if possible. - if verb == "list" { - goVersion, err := state.getGoVersion() - if err != nil { - return nil, err - } - if goVersion >= 16 { - filename, cleanup, err := state.writeOverlays() - if err != nil { - return nil, err - } - defer cleanup() - inv.Overlay = filename - } - } - inv.Verb = verb - inv.Args = args - gocmdRunner := cfg.gocmdRunner - if gocmdRunner == nil { - gocmdRunner = &gocommand.Runner{} - } - stdout, stderr, friendlyErr, err := gocmdRunner.RunRaw(cfg.Context, inv) - if err != nil { - // Check for 'go' executable not being found. - if ee, ok := err.(*exec.Error); ok && ee.Err == exec.ErrNotFound { - return nil, fmt.Errorf("'go list' driver requires 'go', but %s", exec.ErrNotFound) - } - - exitErr, ok := err.(*exec.ExitError) - if !ok { - // Catastrophic error: - // - context cancellation - return nil, xerrors.Errorf("couldn't run 'go': %w", err) - } - - // Old go version? - if strings.Contains(stderr.String(), "flag provided but not defined") { - return nil, goTooOldError{fmt.Errorf("unsupported version of go: %s: %s", exitErr, stderr)} - } - - // Related to #24854 - if len(stderr.String()) > 0 && strings.Contains(stderr.String(), "unexpected directory layout") { - return nil, friendlyErr - } - - // Is there an error running the C compiler in cgo? This will be reported in the "Error" field - // and should be suppressed by go list -e. - // - // This condition is not perfect yet because the error message can include other error messages than runtime/cgo. - isPkgPathRune := func(r rune) bool { - // From https://golang.org/ref/spec#Import_declarations: - // Implementation restriction: A compiler may restrict ImportPaths to non-empty strings - // using only characters belonging to Unicode's L, M, N, P, and S general categories - // (the Graphic characters without spaces) and may also exclude the - // characters !"#$%&'()*,:;<=>?[\]^`{|} and the Unicode replacement character U+FFFD. - return unicode.IsOneOf([]*unicode.RangeTable{unicode.L, unicode.M, unicode.N, unicode.P, unicode.S}, r) && - !strings.ContainsRune("!\"#$%&'()*,:;<=>?[\\]^`{|}\uFFFD", r) - } - // golang/go#36770: Handle case where cmd/go prints module download messages before the error. - msg := stderr.String() - for strings.HasPrefix(msg, "go: downloading") { - msg = msg[strings.IndexRune(msg, '\n')+1:] - } - if len(stderr.String()) > 0 && strings.HasPrefix(stderr.String(), "# ") { - msg := msg[len("# "):] - if strings.HasPrefix(strings.TrimLeftFunc(msg, isPkgPathRune), "\n") { - return stdout, nil - } - // Treat pkg-config errors as a special case (golang.org/issue/36770). - if strings.HasPrefix(msg, "pkg-config") { - return stdout, nil - } - } - - // This error only appears in stderr. See golang.org/cl/166398 for a fix in go list to show - // the error in the Err section of stdout in case -e option is provided. - // This fix is provided for backwards compatibility. - if len(stderr.String()) > 0 && strings.Contains(stderr.String(), "named files must be .go files") { - output := fmt.Sprintf(`{"ImportPath": "command-line-arguments","Incomplete": true,"Error": {"Pos": "","Err": %q}}`, - strings.Trim(stderr.String(), "\n")) - return bytes.NewBufferString(output), nil - } - - // Similar to the previous error, but currently lacks a fix in Go. - if len(stderr.String()) > 0 && strings.Contains(stderr.String(), "named files must all be in one directory") { - output := fmt.Sprintf(`{"ImportPath": "command-line-arguments","Incomplete": true,"Error": {"Pos": "","Err": %q}}`, - strings.Trim(stderr.String(), "\n")) - return bytes.NewBufferString(output), nil - } - - // Backwards compatibility for Go 1.11 because 1.12 and 1.13 put the directory in the ImportPath. - // If the package doesn't exist, put the absolute path of the directory into the error message, - // as Go 1.13 list does. - const noSuchDirectory = "no such directory" - if len(stderr.String()) > 0 && strings.Contains(stderr.String(), noSuchDirectory) { - errstr := stderr.String() - abspath := strings.TrimSpace(errstr[strings.Index(errstr, noSuchDirectory)+len(noSuchDirectory):]) - output := fmt.Sprintf(`{"ImportPath": %q,"Incomplete": true,"Error": {"Pos": "","Err": %q}}`, - abspath, strings.Trim(stderr.String(), "\n")) - return bytes.NewBufferString(output), nil - } - - // Workaround for #29280: go list -e has incorrect behavior when an ad-hoc package doesn't exist. - // Note that the error message we look for in this case is different that the one looked for above. - if len(stderr.String()) > 0 && strings.Contains(stderr.String(), "no such file or directory") { - output := fmt.Sprintf(`{"ImportPath": "command-line-arguments","Incomplete": true,"Error": {"Pos": "","Err": %q}}`, - strings.Trim(stderr.String(), "\n")) - return bytes.NewBufferString(output), nil - } - - // Workaround for #34273. go list -e with GO111MODULE=on has incorrect behavior when listing a - // directory outside any module. - if len(stderr.String()) > 0 && strings.Contains(stderr.String(), "outside available modules") { - output := fmt.Sprintf(`{"ImportPath": %q,"Incomplete": true,"Error": {"Pos": "","Err": %q}}`, - // TODO(matloob): command-line-arguments isn't correct here. - "command-line-arguments", strings.Trim(stderr.String(), "\n")) - return bytes.NewBufferString(output), nil - } - - // Another variation of the previous error - if len(stderr.String()) > 0 && strings.Contains(stderr.String(), "outside module root") { - output := fmt.Sprintf(`{"ImportPath": %q,"Incomplete": true,"Error": {"Pos": "","Err": %q}}`, - // TODO(matloob): command-line-arguments isn't correct here. - "command-line-arguments", strings.Trim(stderr.String(), "\n")) - return bytes.NewBufferString(output), nil - } - - // Workaround for an instance of golang.org/issue/26755: go list -e will return a non-zero exit - // status if there's a dependency on a package that doesn't exist. But it should return - // a zero exit status and set an error on that package. - if len(stderr.String()) > 0 && strings.Contains(stderr.String(), "no Go files in") { - // Don't clobber stdout if `go list` actually returned something. - if len(stdout.String()) > 0 { - return stdout, nil - } - // try to extract package name from string - stderrStr := stderr.String() - var importPath string - colon := strings.Index(stderrStr, ":") - if colon > 0 && strings.HasPrefix(stderrStr, "go build ") { - importPath = stderrStr[len("go build "):colon] - } - output := fmt.Sprintf(`{"ImportPath": %q,"Incomplete": true,"Error": {"Pos": "","Err": %q}}`, - importPath, strings.Trim(stderrStr, "\n")) - return bytes.NewBufferString(output), nil - } - - // Export mode entails a build. - // If that build fails, errors appear on stderr - // (despite the -e flag) and the Export field is blank. - // Do not fail in that case. - // The same is true if an ad-hoc package given to go list doesn't exist. - // TODO(matloob): Remove these once we can depend on go list to exit with a zero status with -e even when - // packages don't exist or a build fails. - if !usesExportData(cfg) && !containsGoFile(args) { - return nil, friendlyErr - } - } - return stdout, nil -} - -// OverlayJSON is the format overlay files are expected to be in. -// The Replace map maps from overlaid paths to replacement paths: -// the Go command will forward all reads trying to open -// each overlaid path to its replacement path, or consider the overlaid -// path not to exist if the replacement path is empty. -// -// From golang/go#39958. -type OverlayJSON struct { - Replace map[string]string `json:"replace,omitempty"` -} - -// writeOverlays writes out files for go list's -overlay flag, as described -// above. -func (state *golistState) writeOverlays() (filename string, cleanup func(), err error) { - // Do nothing if there are no overlays in the config. - if len(state.cfg.Overlay) == 0 { - return "", func() {}, nil - } - dir, err := ioutil.TempDir("", "gopackages-*") - if err != nil { - return "", nil, err - } - // The caller must clean up this directory, unless this function returns an - // error. - cleanup = func() { - os.RemoveAll(dir) - } - defer func() { - if err != nil { - cleanup() - } - }() - overlays := map[string]string{} - for k, v := range state.cfg.Overlay { - // Create a unique filename for the overlaid files, to avoid - // creating nested directories. - noSeparator := strings.Join(strings.Split(filepath.ToSlash(k), "/"), "") - f, err := ioutil.TempFile(dir, fmt.Sprintf("*-%s", noSeparator)) - if err != nil { - return "", func() {}, err - } - if _, err := f.Write(v); err != nil { - return "", func() {}, err - } - if err := f.Close(); err != nil { - return "", func() {}, err - } - overlays[k] = f.Name() - } - b, err := json.Marshal(OverlayJSON{Replace: overlays}) - if err != nil { - return "", func() {}, err - } - // Write out the overlay file that contains the filepath mappings. - filename = filepath.Join(dir, "overlay.json") - if err := ioutil.WriteFile(filename, b, 0665); err != nil { - return "", func() {}, err - } - return filename, cleanup, nil -} - -func containsGoFile(s []string) bool { - for _, f := range s { - if strings.HasSuffix(f, ".go") { - return true - } - } - return false -} - -func cmdDebugStr(cmd *exec.Cmd) string { - env := make(map[string]string) - for _, kv := range cmd.Env { - split := strings.SplitN(kv, "=", 2) - k, v := split[0], split[1] - env[k] = v - } - - var args []string - for _, arg := range cmd.Args { - quoted := strconv.Quote(arg) - if quoted[1:len(quoted)-1] != arg || strings.Contains(arg, " ") { - args = append(args, quoted) - } else { - args = append(args, arg) - } - } - return fmt.Sprintf("GOROOT=%v GOPATH=%v GO111MODULE=%v GOPROXY=%v PWD=%v %v", env["GOROOT"], env["GOPATH"], env["GO111MODULE"], env["GOPROXY"], env["PWD"], strings.Join(args, " ")) -} diff --git a/vendor/golang.org/x/tools/go/packages/golist_overlay.go b/vendor/golang.org/x/tools/go/packages/golist_overlay.go deleted file mode 100644 index 9576b472f..000000000 --- a/vendor/golang.org/x/tools/go/packages/golist_overlay.go +++ /dev/null @@ -1,575 +0,0 @@ -// Copyright 2018 The Go Authors. All rights reserved. -// Use of this source code is governed by a BSD-style -// license that can be found in the LICENSE file. - -package packages - -import ( - "encoding/json" - "fmt" - "go/parser" - "go/token" - "os" - "path/filepath" - "regexp" - "sort" - "strconv" - "strings" - - "golang.org/x/tools/internal/gocommand" -) - -// processGolistOverlay provides rudimentary support for adding -// files that don't exist on disk to an overlay. The results can be -// sometimes incorrect. -// TODO(matloob): Handle unsupported cases, including the following: -// - determining the correct package to add given a new import path -func (state *golistState) processGolistOverlay(response *responseDeduper) (modifiedPkgs, needPkgs []string, err error) { - havePkgs := make(map[string]string) // importPath -> non-test package ID - needPkgsSet := make(map[string]bool) - modifiedPkgsSet := make(map[string]bool) - - pkgOfDir := make(map[string][]*Package) - for _, pkg := range response.dr.Packages { - // This is an approximation of import path to id. This can be - // wrong for tests, vendored packages, and a number of other cases. - havePkgs[pkg.PkgPath] = pkg.ID - dir, err := commonDir(pkg.GoFiles) - if err != nil { - return nil, nil, err - } - if dir != "" { - pkgOfDir[dir] = append(pkgOfDir[dir], pkg) - } - } - - // If no new imports are added, it is safe to avoid loading any needPkgs. - // Otherwise, it's hard to tell which package is actually being loaded - // (due to vendoring) and whether any modified package will show up - // in the transitive set of dependencies (because new imports are added, - // potentially modifying the transitive set of dependencies). - var overlayAddsImports bool - - // If both a package and its test package are created by the overlay, we - // need the real package first. Process all non-test files before test - // files, and make the whole process deterministic while we're at it. - var overlayFiles []string - for opath := range state.cfg.Overlay { - overlayFiles = append(overlayFiles, opath) - } - sort.Slice(overlayFiles, func(i, j int) bool { - iTest := strings.HasSuffix(overlayFiles[i], "_test.go") - jTest := strings.HasSuffix(overlayFiles[j], "_test.go") - if iTest != jTest { - return !iTest // non-tests are before tests. - } - return overlayFiles[i] < overlayFiles[j] - }) - for _, opath := range overlayFiles { - contents := state.cfg.Overlay[opath] - base := filepath.Base(opath) - dir := filepath.Dir(opath) - var pkg *Package // if opath belongs to both a package and its test variant, this will be the test variant - var testVariantOf *Package // if opath is a test file, this is the package it is testing - var fileExists bool - isTestFile := strings.HasSuffix(opath, "_test.go") - pkgName, ok := extractPackageName(opath, contents) - if !ok { - // Don't bother adding a file that doesn't even have a parsable package statement - // to the overlay. - continue - } - // If all the overlay files belong to a different package, change the - // package name to that package. - maybeFixPackageName(pkgName, isTestFile, pkgOfDir[dir]) - nextPackage: - for _, p := range response.dr.Packages { - if pkgName != p.Name && p.ID != "command-line-arguments" { - continue - } - for _, f := range p.GoFiles { - if !sameFile(filepath.Dir(f), dir) { - continue - } - // Make sure to capture information on the package's test variant, if needed. - if isTestFile && !hasTestFiles(p) { - // TODO(matloob): Are there packages other than the 'production' variant - // of a package that this can match? This shouldn't match the test main package - // because the file is generated in another directory. - testVariantOf = p - continue nextPackage - } else if !isTestFile && hasTestFiles(p) { - // We're examining a test variant, but the overlaid file is - // a non-test file. Because the overlay implementation - // (currently) only adds a file to one package, skip this - // package, so that we can add the file to the production - // variant of the package. (https://golang.org/issue/36857 - // tracks handling overlays on both the production and test - // variant of a package). - continue nextPackage - } - if pkg != nil && p != pkg && pkg.PkgPath == p.PkgPath { - // We have already seen the production version of the - // for which p is a test variant. - if hasTestFiles(p) { - testVariantOf = pkg - } - } - pkg = p - if filepath.Base(f) == base { - fileExists = true - } - } - } - // The overlay could have included an entirely new package or an - // ad-hoc package. An ad-hoc package is one that we have manually - // constructed from inadequate `go list` results for a file= query. - // It will have the ID command-line-arguments. - if pkg == nil || pkg.ID == "command-line-arguments" { - // Try to find the module or gopath dir the file is contained in. - // Then for modules, add the module opath to the beginning. - pkgPath, ok, err := state.getPkgPath(dir) - if err != nil { - return nil, nil, err - } - if !ok { - break - } - var forTest string // only set for x tests - isXTest := strings.HasSuffix(pkgName, "_test") - if isXTest { - forTest = pkgPath - pkgPath += "_test" - } - id := pkgPath - if isTestFile { - if isXTest { - id = fmt.Sprintf("%s [%s.test]", pkgPath, forTest) - } else { - id = fmt.Sprintf("%s [%s.test]", pkgPath, pkgPath) - } - } - if pkg != nil { - // TODO(rstambler): We should change the package's path and ID - // here. The only issue is that this messes with the roots. - } else { - // Try to reclaim a package with the same ID, if it exists in the response. - for _, p := range response.dr.Packages { - if reclaimPackage(p, id, opath, contents) { - pkg = p - break - } - } - // Otherwise, create a new package. - if pkg == nil { - pkg = &Package{ - PkgPath: pkgPath, - ID: id, - Name: pkgName, - Imports: make(map[string]*Package), - } - response.addPackage(pkg) - havePkgs[pkg.PkgPath] = id - // Add the production package's sources for a test variant. - if isTestFile && !isXTest && testVariantOf != nil { - pkg.GoFiles = append(pkg.GoFiles, testVariantOf.GoFiles...) - pkg.CompiledGoFiles = append(pkg.CompiledGoFiles, testVariantOf.CompiledGoFiles...) - // Add the package under test and its imports to the test variant. - pkg.forTest = testVariantOf.PkgPath - for k, v := range testVariantOf.Imports { - pkg.Imports[k] = &Package{ID: v.ID} - } - } - if isXTest { - pkg.forTest = forTest - } - } - } - } - if !fileExists { - pkg.GoFiles = append(pkg.GoFiles, opath) - // TODO(matloob): Adding the file to CompiledGoFiles can exhibit the wrong behavior - // if the file will be ignored due to its build tags. - pkg.CompiledGoFiles = append(pkg.CompiledGoFiles, opath) - modifiedPkgsSet[pkg.ID] = true - } - imports, err := extractImports(opath, contents) - if err != nil { - // Let the parser or type checker report errors later. - continue - } - for _, imp := range imports { - // TODO(rstambler): If the package is an x test and the import has - // a test variant, make sure to replace it. - if _, found := pkg.Imports[imp]; found { - continue - } - overlayAddsImports = true - id, ok := havePkgs[imp] - if !ok { - var err error - id, err = state.resolveImport(dir, imp) - if err != nil { - return nil, nil, err - } - } - pkg.Imports[imp] = &Package{ID: id} - // Add dependencies to the non-test variant version of this package as well. - if testVariantOf != nil { - testVariantOf.Imports[imp] = &Package{ID: id} - } - } - } - - // toPkgPath guesses the package path given the id. - toPkgPath := func(sourceDir, id string) (string, error) { - if i := strings.IndexByte(id, ' '); i >= 0 { - return state.resolveImport(sourceDir, id[:i]) - } - return state.resolveImport(sourceDir, id) - } - - // Now that new packages have been created, do another pass to determine - // the new set of missing packages. - for _, pkg := range response.dr.Packages { - for _, imp := range pkg.Imports { - if len(pkg.GoFiles) == 0 { - return nil, nil, fmt.Errorf("cannot resolve imports for package %q with no Go files", pkg.PkgPath) - } - pkgPath, err := toPkgPath(filepath.Dir(pkg.GoFiles[0]), imp.ID) - if err != nil { - return nil, nil, err - } - if _, ok := havePkgs[pkgPath]; !ok { - needPkgsSet[pkgPath] = true - } - } - } - - if overlayAddsImports { - needPkgs = make([]string, 0, len(needPkgsSet)) - for pkg := range needPkgsSet { - needPkgs = append(needPkgs, pkg) - } - } - modifiedPkgs = make([]string, 0, len(modifiedPkgsSet)) - for pkg := range modifiedPkgsSet { - modifiedPkgs = append(modifiedPkgs, pkg) - } - return modifiedPkgs, needPkgs, err -} - -// resolveImport finds the ID of a package given its import path. -// In particular, it will find the right vendored copy when in GOPATH mode. -func (state *golistState) resolveImport(sourceDir, importPath string) (string, error) { - env, err := state.getEnv() - if err != nil { - return "", err - } - if env["GOMOD"] != "" { - return importPath, nil - } - - searchDir := sourceDir - for { - vendorDir := filepath.Join(searchDir, "vendor") - exists, ok := state.vendorDirs[vendorDir] - if !ok { - info, err := os.Stat(vendorDir) - exists = err == nil && info.IsDir() - state.vendorDirs[vendorDir] = exists - } - - if exists { - vendoredPath := filepath.Join(vendorDir, importPath) - if info, err := os.Stat(vendoredPath); err == nil && info.IsDir() { - // We should probably check for .go files here, but shame on anyone who fools us. - path, ok, err := state.getPkgPath(vendoredPath) - if err != nil { - return "", err - } - if ok { - return path, nil - } - } - } - - // We know we've hit the top of the filesystem when we Dir / and get /, - // or C:\ and get C:\, etc. - next := filepath.Dir(searchDir) - if next == searchDir { - break - } - searchDir = next - } - return importPath, nil -} - -func hasTestFiles(p *Package) bool { - for _, f := range p.GoFiles { - if strings.HasSuffix(f, "_test.go") { - return true - } - } - return false -} - -// determineRootDirs returns a mapping from absolute directories that could -// contain code to their corresponding import path prefixes. -func (state *golistState) determineRootDirs() (map[string]string, error) { - env, err := state.getEnv() - if err != nil { - return nil, err - } - if env["GOMOD"] != "" { - state.rootsOnce.Do(func() { - state.rootDirs, state.rootDirsError = state.determineRootDirsModules() - }) - } else { - state.rootsOnce.Do(func() { - state.rootDirs, state.rootDirsError = state.determineRootDirsGOPATH() - }) - } - return state.rootDirs, state.rootDirsError -} - -func (state *golistState) determineRootDirsModules() (map[string]string, error) { - // List all of the modules--the first will be the directory for the main - // module. Any replaced modules will also need to be treated as roots. - // Editing files in the module cache isn't a great idea, so we don't - // plan to ever support that. - out, err := state.invokeGo("list", "-m", "-json", "all") - if err != nil { - // 'go list all' will fail if we're outside of a module and - // GO111MODULE=on. Try falling back without 'all'. - var innerErr error - out, innerErr = state.invokeGo("list", "-m", "-json") - if innerErr != nil { - return nil, err - } - } - roots := map[string]string{} - modules := map[string]string{} - var i int - for dec := json.NewDecoder(out); dec.More(); { - mod := new(gocommand.ModuleJSON) - if err := dec.Decode(mod); err != nil { - return nil, err - } - if mod.Dir != "" && mod.Path != "" { - // This is a valid module; add it to the map. - absDir, err := filepath.Abs(mod.Dir) - if err != nil { - return nil, err - } - modules[absDir] = mod.Path - // The first result is the main module. - if i == 0 || mod.Replace != nil && mod.Replace.Path != "" { - roots[absDir] = mod.Path - } - } - i++ - } - return roots, nil -} - -func (state *golistState) determineRootDirsGOPATH() (map[string]string, error) { - m := map[string]string{} - for _, dir := range filepath.SplitList(state.mustGetEnv()["GOPATH"]) { - absDir, err := filepath.Abs(dir) - if err != nil { - return nil, err - } - m[filepath.Join(absDir, "src")] = "" - } - return m, nil -} - -func extractImports(filename string, contents []byte) ([]string, error) { - f, err := parser.ParseFile(token.NewFileSet(), filename, contents, parser.ImportsOnly) // TODO(matloob): reuse fileset? - if err != nil { - return nil, err - } - var res []string - for _, imp := range f.Imports { - quotedPath := imp.Path.Value - path, err := strconv.Unquote(quotedPath) - if err != nil { - return nil, err - } - res = append(res, path) - } - return res, nil -} - -// reclaimPackage attempts to reuse a package that failed to load in an overlay. -// -// If the package has errors and has no Name, GoFiles, or Imports, -// then it's possible that it doesn't yet exist on disk. -func reclaimPackage(pkg *Package, id string, filename string, contents []byte) bool { - // TODO(rstambler): Check the message of the actual error? - // It differs between $GOPATH and module mode. - if pkg.ID != id { - return false - } - if len(pkg.Errors) != 1 { - return false - } - if pkg.Name != "" || pkg.ExportFile != "" { - return false - } - if len(pkg.GoFiles) > 0 || len(pkg.CompiledGoFiles) > 0 || len(pkg.OtherFiles) > 0 { - return false - } - if len(pkg.Imports) > 0 { - return false - } - pkgName, ok := extractPackageName(filename, contents) - if !ok { - return false - } - pkg.Name = pkgName - pkg.Errors = nil - return true -} - -func extractPackageName(filename string, contents []byte) (string, bool) { - // TODO(rstambler): Check the message of the actual error? - // It differs between $GOPATH and module mode. - f, err := parser.ParseFile(token.NewFileSet(), filename, contents, parser.PackageClauseOnly) // TODO(matloob): reuse fileset? - if err != nil { - return "", false - } - return f.Name.Name, true -} - -// commonDir returns the directory that all files are in, "" if files is empty, -// or an error if they aren't in the same directory. -func commonDir(files []string) (string, error) { - seen := make(map[string]bool) - for _, f := range files { - seen[filepath.Dir(f)] = true - } - if len(seen) > 1 { - return "", fmt.Errorf("files (%v) are in more than one directory: %v", files, seen) - } - for k := range seen { - // seen has only one element; return it. - return k, nil - } - return "", nil // no files -} - -// It is possible that the files in the disk directory dir have a different package -// name from newName, which is deduced from the overlays. If they all have a different -// package name, and they all have the same package name, then that name becomes -// the package name. -// It returns true if it changes the package name, false otherwise. -func maybeFixPackageName(newName string, isTestFile bool, pkgsOfDir []*Package) { - names := make(map[string]int) - for _, p := range pkgsOfDir { - names[p.Name]++ - } - if len(names) != 1 { - // some files are in different packages - return - } - var oldName string - for k := range names { - oldName = k - } - if newName == oldName { - return - } - // We might have a case where all of the package names in the directory are - // the same, but the overlay file is for an x test, which belongs to its - // own package. If the x test does not yet exist on disk, we may not yet - // have its package name on disk, but we should not rename the packages. - // - // We use a heuristic to determine if this file belongs to an x test: - // The test file should have a package name whose package name has a _test - // suffix or looks like "newName_test". - maybeXTest := strings.HasPrefix(oldName+"_test", newName) || strings.HasSuffix(newName, "_test") - if isTestFile && maybeXTest { - return - } - for _, p := range pkgsOfDir { - p.Name = newName - } -} - -// This function is copy-pasted from -// https://github.com/golang/go/blob/9706f510a5e2754595d716bd64be8375997311fb/src/cmd/go/internal/search/search.go#L360. -// It should be deleted when we remove support for overlays from go/packages. -// -// NOTE: This does not handle any ./... or ./ style queries, as this function -// doesn't know the working directory. -// -// matchPattern(pattern)(name) reports whether -// name matches pattern. Pattern is a limited glob -// pattern in which '...' means 'any string' and there -// is no other special syntax. -// Unfortunately, there are two special cases. Quoting "go help packages": -// -// First, /... at the end of the pattern can match an empty string, -// so that net/... matches both net and packages in its subdirectories, like net/http. -// Second, any slash-separated pattern element containing a wildcard never -// participates in a match of the "vendor" element in the path of a vendored -// package, so that ./... does not match packages in subdirectories of -// ./vendor or ./mycode/vendor, but ./vendor/... and ./mycode/vendor/... do. -// Note, however, that a directory named vendor that itself contains code -// is not a vendored package: cmd/vendor would be a command named vendor, -// and the pattern cmd/... matches it. -func matchPattern(pattern string) func(name string) bool { - // Convert pattern to regular expression. - // The strategy for the trailing /... is to nest it in an explicit ? expression. - // The strategy for the vendor exclusion is to change the unmatchable - // vendor strings to a disallowed code point (vendorChar) and to use - // "(anything but that codepoint)*" as the implementation of the ... wildcard. - // This is a bit complicated but the obvious alternative, - // namely a hand-written search like in most shell glob matchers, - // is too easy to make accidentally exponential. - // Using package regexp guarantees linear-time matching. - - const vendorChar = "\x00" - - if strings.Contains(pattern, vendorChar) { - return func(name string) bool { return false } - } - - re := regexp.QuoteMeta(pattern) - re = replaceVendor(re, vendorChar) - switch { - case strings.HasSuffix(re, `/`+vendorChar+`/\.\.\.`): - re = strings.TrimSuffix(re, `/`+vendorChar+`/\.\.\.`) + `(/vendor|/` + vendorChar + `/\.\.\.)` - case re == vendorChar+`/\.\.\.`: - re = `(/vendor|/` + vendorChar + `/\.\.\.)` - case strings.HasSuffix(re, `/\.\.\.`): - re = strings.TrimSuffix(re, `/\.\.\.`) + `(/\.\.\.)?` - } - re = strings.ReplaceAll(re, `\.\.\.`, `[^`+vendorChar+`]*`) - - reg := regexp.MustCompile(`^` + re + `$`) - - return func(name string) bool { - if strings.Contains(name, vendorChar) { - return false - } - return reg.MatchString(replaceVendor(name, vendorChar)) - } -} - -// replaceVendor returns the result of replacing -// non-trailing vendor path elements in x with repl. -func replaceVendor(x, repl string) string { - if !strings.Contains(x, "vendor") { - return x - } - elem := strings.Split(x, "/") - for i := 0; i < len(elem)-1; i++ { - if elem[i] == "vendor" { - elem[i] = repl - } - } - return strings.Join(elem, "/") -} diff --git a/vendor/golang.org/x/tools/go/packages/loadmode_string.go b/vendor/golang.org/x/tools/go/packages/loadmode_string.go deleted file mode 100644 index 7ea37e7ee..000000000 --- a/vendor/golang.org/x/tools/go/packages/loadmode_string.go +++ /dev/null @@ -1,57 +0,0 @@ -// Copyright 2019 The Go Authors. All rights reserved. -// Use of this source code is governed by a BSD-style -// license that can be found in the LICENSE file. - -package packages - -import ( - "fmt" - "strings" -) - -var allModes = []LoadMode{ - NeedName, - NeedFiles, - NeedCompiledGoFiles, - NeedImports, - NeedDeps, - NeedExportsFile, - NeedTypes, - NeedSyntax, - NeedTypesInfo, - NeedTypesSizes, -} - -var modeStrings = []string{ - "NeedName", - "NeedFiles", - "NeedCompiledGoFiles", - "NeedImports", - "NeedDeps", - "NeedExportsFile", - "NeedTypes", - "NeedSyntax", - "NeedTypesInfo", - "NeedTypesSizes", -} - -func (mod LoadMode) String() string { - m := mod - if m == 0 { - return "LoadMode(0)" - } - var out []string - for i, x := range allModes { - if x > m { - break - } - if (m & x) != 0 { - out = append(out, modeStrings[i]) - m = m ^ x - } - } - if m != 0 { - out = append(out, "Unknown") - } - return fmt.Sprintf("LoadMode(%s)", strings.Join(out, "|")) -} diff --git a/vendor/golang.org/x/tools/go/packages/packages.go b/vendor/golang.org/x/tools/go/packages/packages.go deleted file mode 100644 index 1b5424e78..000000000 --- a/vendor/golang.org/x/tools/go/packages/packages.go +++ /dev/null @@ -1,1244 +0,0 @@ -// Copyright 2018 The Go Authors. All rights reserved. -// Use of this source code is governed by a BSD-style -// license that can be found in the LICENSE file. - -package packages - -// See doc.go for package documentation and implementation notes. - -import ( - "context" - "encoding/json" - "fmt" - "go/ast" - "go/parser" - "go/scanner" - "go/token" - "go/types" - "io/ioutil" - "log" - "os" - "path/filepath" - "strings" - "sync" - "time" - - "golang.org/x/tools/go/gcexportdata" - "golang.org/x/tools/internal/gocommand" - "golang.org/x/tools/internal/packagesinternal" - "golang.org/x/tools/internal/typeparams" - "golang.org/x/tools/internal/typesinternal" -) - -// A LoadMode controls the amount of detail to return when loading. -// The bits below can be combined to specify which fields should be -// filled in the result packages. -// The zero value is a special case, equivalent to combining -// the NeedName, NeedFiles, and NeedCompiledGoFiles bits. -// ID and Errors (if present) will always be filled. -// Load may return more information than requested. -type LoadMode int - -// TODO(matloob): When a V2 of go/packages is released, rename NeedExportsFile to -// NeedExportFile to make it consistent with the Package field it's adding. - -const ( - // NeedName adds Name and PkgPath. - NeedName LoadMode = 1 << iota - - // NeedFiles adds GoFiles and OtherFiles. - NeedFiles - - // NeedCompiledGoFiles adds CompiledGoFiles. - NeedCompiledGoFiles - - // NeedImports adds Imports. If NeedDeps is not set, the Imports field will contain - // "placeholder" Packages with only the ID set. - NeedImports - - // NeedDeps adds the fields requested by the LoadMode in the packages in Imports. - NeedDeps - - // NeedExportsFile adds ExportFile. - NeedExportsFile - - // NeedTypes adds Types, Fset, and IllTyped. - NeedTypes - - // NeedSyntax adds Syntax. - NeedSyntax - - // NeedTypesInfo adds TypesInfo. - NeedTypesInfo - - // NeedTypesSizes adds TypesSizes. - NeedTypesSizes - - // typecheckCgo enables full support for type checking cgo. Requires Go 1.15+. - // Modifies CompiledGoFiles and Types, and has no effect on its own. - typecheckCgo - - // NeedModule adds Module. - NeedModule -) - -const ( - // Deprecated: LoadFiles exists for historical compatibility - // and should not be used. Please directly specify the needed fields using the Need values. - LoadFiles = NeedName | NeedFiles | NeedCompiledGoFiles - - // Deprecated: LoadImports exists for historical compatibility - // and should not be used. Please directly specify the needed fields using the Need values. - LoadImports = LoadFiles | NeedImports - - // Deprecated: LoadTypes exists for historical compatibility - // and should not be used. Please directly specify the needed fields using the Need values. - LoadTypes = LoadImports | NeedTypes | NeedTypesSizes - - // Deprecated: LoadSyntax exists for historical compatibility - // and should not be used. Please directly specify the needed fields using the Need values. - LoadSyntax = LoadTypes | NeedSyntax | NeedTypesInfo - - // Deprecated: LoadAllSyntax exists for historical compatibility - // and should not be used. Please directly specify the needed fields using the Need values. - LoadAllSyntax = LoadSyntax | NeedDeps -) - -// A Config specifies details about how packages should be loaded. -// The zero value is a valid configuration. -// Calls to Load do not modify this struct. -type Config struct { - // Mode controls the level of information returned for each package. - Mode LoadMode - - // Context specifies the context for the load operation. - // If the context is cancelled, the loader may stop early - // and return an ErrCancelled error. - // If Context is nil, the load cannot be cancelled. - Context context.Context - - // Logf is the logger for the config. - // If the user provides a logger, debug logging is enabled. - // If the GOPACKAGESDEBUG environment variable is set to true, - // but the logger is nil, default to log.Printf. - Logf func(format string, args ...interface{}) - - // Dir is the directory in which to run the build system's query tool - // that provides information about the packages. - // If Dir is empty, the tool is run in the current directory. - Dir string - - // Env is the environment to use when invoking the build system's query tool. - // If Env is nil, the current environment is used. - // As in os/exec's Cmd, only the last value in the slice for - // each environment key is used. To specify the setting of only - // a few variables, append to the current environment, as in: - // - // opt.Env = append(os.Environ(), "GOOS=plan9", "GOARCH=386") - // - Env []string - - // gocmdRunner guards go command calls from concurrency errors. - gocmdRunner *gocommand.Runner - - // BuildFlags is a list of command-line flags to be passed through to - // the build system's query tool. - BuildFlags []string - - // modFile will be used for -modfile in go command invocations. - modFile string - - // modFlag will be used for -modfile in go command invocations. - modFlag string - - // Fset provides source position information for syntax trees and types. - // If Fset is nil, Load will use a new fileset, but preserve Fset's value. - Fset *token.FileSet - - // ParseFile is called to read and parse each file - // when preparing a package's type-checked syntax tree. - // It must be safe to call ParseFile simultaneously from multiple goroutines. - // If ParseFile is nil, the loader will uses parser.ParseFile. - // - // ParseFile should parse the source from src and use filename only for - // recording position information. - // - // An application may supply a custom implementation of ParseFile - // to change the effective file contents or the behavior of the parser, - // or to modify the syntax tree. For example, selectively eliminating - // unwanted function bodies can significantly accelerate type checking. - ParseFile func(fset *token.FileSet, filename string, src []byte) (*ast.File, error) - - // If Tests is set, the loader includes not just the packages - // matching a particular pattern but also any related test packages, - // including test-only variants of the package and the test executable. - // - // For example, when using the go command, loading "fmt" with Tests=true - // returns four packages, with IDs "fmt" (the standard package), - // "fmt [fmt.test]" (the package as compiled for the test), - // "fmt_test" (the test functions from source files in package fmt_test), - // and "fmt.test" (the test binary). - // - // In build systems with explicit names for tests, - // setting Tests may have no effect. - Tests bool - - // Overlay provides a mapping of absolute file paths to file contents. - // If the file with the given path already exists, the parser will use the - // alternative file contents provided by the map. - // - // Overlays provide incomplete support for when a given file doesn't - // already exist on disk. See the package doc above for more details. - Overlay map[string][]byte -} - -// driver is the type for functions that query the build system for the -// packages named by the patterns. -type driver func(cfg *Config, patterns ...string) (*driverResponse, error) - -// driverResponse contains the results for a driver query. -type driverResponse struct { - // NotHandled is returned if the request can't be handled by the current - // driver. If an external driver returns a response with NotHandled, the - // rest of the driverResponse is ignored, and go/packages will fallback - // to the next driver. If go/packages is extended in the future to support - // lists of multiple drivers, go/packages will fall back to the next driver. - NotHandled bool - - // Sizes, if not nil, is the types.Sizes to use when type checking. - Sizes *types.StdSizes - - // Roots is the set of package IDs that make up the root packages. - // We have to encode this separately because when we encode a single package - // we cannot know if it is one of the roots as that requires knowledge of the - // graph it is part of. - Roots []string `json:",omitempty"` - - // Packages is the full set of packages in the graph. - // The packages are not connected into a graph. - // The Imports if populated will be stubs that only have their ID set. - // Imports will be connected and then type and syntax information added in a - // later pass (see refine). - Packages []*Package -} - -// Load loads and returns the Go packages named by the given patterns. -// -// Config specifies loading options; -// nil behaves the same as an empty Config. -// -// Load returns an error if any of the patterns was invalid -// as defined by the underlying build system. -// It may return an empty list of packages without an error, -// for instance for an empty expansion of a valid wildcard. -// Errors associated with a particular package are recorded in the -// corresponding Package's Errors list, and do not cause Load to -// return an error. Clients may need to handle such errors before -// proceeding with further analysis. The PrintErrors function is -// provided for convenient display of all errors. -func Load(cfg *Config, patterns ...string) ([]*Package, error) { - l := newLoader(cfg) - response, err := defaultDriver(&l.Config, patterns...) - if err != nil { - return nil, err - } - l.sizes = response.Sizes - return l.refine(response.Roots, response.Packages...) -} - -// defaultDriver is a driver that implements go/packages' fallback behavior. -// It will try to request to an external driver, if one exists. If there's -// no external driver, or the driver returns a response with NotHandled set, -// defaultDriver will fall back to the go list driver. -func defaultDriver(cfg *Config, patterns ...string) (*driverResponse, error) { - driver := findExternalDriver(cfg) - if driver == nil { - driver = goListDriver - } - response, err := driver(cfg, patterns...) - if err != nil { - return response, err - } else if response.NotHandled { - return goListDriver(cfg, patterns...) - } - return response, nil -} - -// A Package describes a loaded Go package. -type Package struct { - // ID is a unique identifier for a package, - // in a syntax provided by the underlying build system. - // - // Because the syntax varies based on the build system, - // clients should treat IDs as opaque and not attempt to - // interpret them. - ID string - - // Name is the package name as it appears in the package source code. - Name string - - // PkgPath is the package path as used by the go/types package. - PkgPath string - - // Errors contains any errors encountered querying the metadata - // of the package, or while parsing or type-checking its files. - Errors []Error - - // GoFiles lists the absolute file paths of the package's Go source files. - GoFiles []string - - // CompiledGoFiles lists the absolute file paths of the package's source - // files that are suitable for type checking. - // This may differ from GoFiles if files are processed before compilation. - CompiledGoFiles []string - - // OtherFiles lists the absolute file paths of the package's non-Go source files, - // including assembly, C, C++, Fortran, Objective-C, SWIG, and so on. - OtherFiles []string - - // IgnoredFiles lists source files that are not part of the package - // using the current build configuration but that might be part of - // the package using other build configurations. - IgnoredFiles []string - - // ExportFile is the absolute path to a file containing type - // information for the package as provided by the build system. - ExportFile string - - // Imports maps import paths appearing in the package's Go source files - // to corresponding loaded Packages. - Imports map[string]*Package - - // Types provides type information for the package. - // The NeedTypes LoadMode bit sets this field for packages matching the - // patterns; type information for dependencies may be missing or incomplete, - // unless NeedDeps and NeedImports are also set. - Types *types.Package - - // Fset provides position information for Types, TypesInfo, and Syntax. - // It is set only when Types is set. - Fset *token.FileSet - - // IllTyped indicates whether the package or any dependency contains errors. - // It is set only when Types is set. - IllTyped bool - - // Syntax is the package's syntax trees, for the files listed in CompiledGoFiles. - // - // The NeedSyntax LoadMode bit populates this field for packages matching the patterns. - // If NeedDeps and NeedImports are also set, this field will also be populated - // for dependencies. - // - // Syntax is kept in the same order as CompiledGoFiles, with the caveat that nils are - // removed. If parsing returned nil, Syntax may be shorter than CompiledGoFiles. - Syntax []*ast.File - - // TypesInfo provides type information about the package's syntax trees. - // It is set only when Syntax is set. - TypesInfo *types.Info - - // TypesSizes provides the effective size function for types in TypesInfo. - TypesSizes types.Sizes - - // forTest is the package under test, if any. - forTest string - - // depsErrors is the DepsErrors field from the go list response, if any. - depsErrors []*packagesinternal.PackageError - - // module is the module information for the package if it exists. - Module *Module -} - -// Module provides module information for a package. -type Module struct { - Path string // module path - Version string // module version - Replace *Module // replaced by this module - Time *time.Time // time version was created - Main bool // is this the main module? - Indirect bool // is this module only an indirect dependency of main module? - Dir string // directory holding files for this module, if any - GoMod string // path to go.mod file used when loading this module, if any - GoVersion string // go version used in module - Error *ModuleError // error loading module -} - -// ModuleError holds errors loading a module. -type ModuleError struct { - Err string // the error itself -} - -func init() { - packagesinternal.GetForTest = func(p interface{}) string { - return p.(*Package).forTest - } - packagesinternal.GetDepsErrors = func(p interface{}) []*packagesinternal.PackageError { - return p.(*Package).depsErrors - } - packagesinternal.GetGoCmdRunner = func(config interface{}) *gocommand.Runner { - return config.(*Config).gocmdRunner - } - packagesinternal.SetGoCmdRunner = func(config interface{}, runner *gocommand.Runner) { - config.(*Config).gocmdRunner = runner - } - packagesinternal.SetModFile = func(config interface{}, value string) { - config.(*Config).modFile = value - } - packagesinternal.SetModFlag = func(config interface{}, value string) { - config.(*Config).modFlag = value - } - packagesinternal.TypecheckCgo = int(typecheckCgo) -} - -// An Error describes a problem with a package's metadata, syntax, or types. -type Error struct { - Pos string // "file:line:col" or "file:line" or "" or "-" - Msg string - Kind ErrorKind -} - -// ErrorKind describes the source of the error, allowing the user to -// differentiate between errors generated by the driver, the parser, or the -// type-checker. -type ErrorKind int - -const ( - UnknownError ErrorKind = iota - ListError - ParseError - TypeError -) - -func (err Error) Error() string { - pos := err.Pos - if pos == "" { - pos = "-" // like token.Position{}.String() - } - return pos + ": " + err.Msg -} - -// flatPackage is the JSON form of Package -// It drops all the type and syntax fields, and transforms the Imports -// -// TODO(adonovan): identify this struct with Package, effectively -// publishing the JSON protocol. -type flatPackage struct { - ID string - Name string `json:",omitempty"` - PkgPath string `json:",omitempty"` - Errors []Error `json:",omitempty"` - GoFiles []string `json:",omitempty"` - CompiledGoFiles []string `json:",omitempty"` - OtherFiles []string `json:",omitempty"` - IgnoredFiles []string `json:",omitempty"` - ExportFile string `json:",omitempty"` - Imports map[string]string `json:",omitempty"` -} - -// MarshalJSON returns the Package in its JSON form. -// For the most part, the structure fields are written out unmodified, and -// the type and syntax fields are skipped. -// The imports are written out as just a map of path to package id. -// The errors are written using a custom type that tries to preserve the -// structure of error types we know about. -// -// This method exists to enable support for additional build systems. It is -// not intended for use by clients of the API and we may change the format. -func (p *Package) MarshalJSON() ([]byte, error) { - flat := &flatPackage{ - ID: p.ID, - Name: p.Name, - PkgPath: p.PkgPath, - Errors: p.Errors, - GoFiles: p.GoFiles, - CompiledGoFiles: p.CompiledGoFiles, - OtherFiles: p.OtherFiles, - IgnoredFiles: p.IgnoredFiles, - ExportFile: p.ExportFile, - } - if len(p.Imports) > 0 { - flat.Imports = make(map[string]string, len(p.Imports)) - for path, ipkg := range p.Imports { - flat.Imports[path] = ipkg.ID - } - } - return json.Marshal(flat) -} - -// UnmarshalJSON reads in a Package from its JSON format. -// See MarshalJSON for details about the format accepted. -func (p *Package) UnmarshalJSON(b []byte) error { - flat := &flatPackage{} - if err := json.Unmarshal(b, &flat); err != nil { - return err - } - *p = Package{ - ID: flat.ID, - Name: flat.Name, - PkgPath: flat.PkgPath, - Errors: flat.Errors, - GoFiles: flat.GoFiles, - CompiledGoFiles: flat.CompiledGoFiles, - OtherFiles: flat.OtherFiles, - ExportFile: flat.ExportFile, - } - if len(flat.Imports) > 0 { - p.Imports = make(map[string]*Package, len(flat.Imports)) - for path, id := range flat.Imports { - p.Imports[path] = &Package{ID: id} - } - } - return nil -} - -func (p *Package) String() string { return p.ID } - -// loaderPackage augments Package with state used during the loading phase -type loaderPackage struct { - *Package - importErrors map[string]error // maps each bad import to its error - loadOnce sync.Once - color uint8 // for cycle detection - needsrc bool // load from source (Mode >= LoadTypes) - needtypes bool // type information is either requested or depended on - initial bool // package was matched by a pattern -} - -// loader holds the working state of a single call to load. -type loader struct { - pkgs map[string]*loaderPackage - Config - sizes types.Sizes - parseCache map[string]*parseValue - parseCacheMu sync.Mutex - exportMu sync.Mutex // enforces mutual exclusion of exportdata operations - - // Config.Mode contains the implied mode (see impliedLoadMode). - // Implied mode contains all the fields we need the data for. - // In requestedMode there are the actually requested fields. - // We'll zero them out before returning packages to the user. - // This makes it easier for us to get the conditions where - // we need certain modes right. - requestedMode LoadMode -} - -type parseValue struct { - f *ast.File - err error - ready chan struct{} -} - -func newLoader(cfg *Config) *loader { - ld := &loader{ - parseCache: map[string]*parseValue{}, - } - if cfg != nil { - ld.Config = *cfg - // If the user has provided a logger, use it. - ld.Config.Logf = cfg.Logf - } - if ld.Config.Logf == nil { - // If the GOPACKAGESDEBUG environment variable is set to true, - // but the user has not provided a logger, default to log.Printf. - if debug { - ld.Config.Logf = log.Printf - } else { - ld.Config.Logf = func(format string, args ...interface{}) {} - } - } - if ld.Config.Mode == 0 { - ld.Config.Mode = NeedName | NeedFiles | NeedCompiledGoFiles // Preserve zero behavior of Mode for backwards compatibility. - } - if ld.Config.Env == nil { - ld.Config.Env = os.Environ() - } - if ld.Config.gocmdRunner == nil { - ld.Config.gocmdRunner = &gocommand.Runner{} - } - if ld.Context == nil { - ld.Context = context.Background() - } - if ld.Dir == "" { - if dir, err := os.Getwd(); err == nil { - ld.Dir = dir - } - } - - // Save the actually requested fields. We'll zero them out before returning packages to the user. - ld.requestedMode = ld.Mode - ld.Mode = impliedLoadMode(ld.Mode) - - if ld.Mode&NeedTypes != 0 || ld.Mode&NeedSyntax != 0 { - if ld.Fset == nil { - ld.Fset = token.NewFileSet() - } - - // ParseFile is required even in LoadTypes mode - // because we load source if export data is missing. - if ld.ParseFile == nil { - ld.ParseFile = func(fset *token.FileSet, filename string, src []byte) (*ast.File, error) { - const mode = parser.AllErrors | parser.ParseComments - return parser.ParseFile(fset, filename, src, mode) - } - } - } - - return ld -} - -// refine connects the supplied packages into a graph and then adds type and -// and syntax information as requested by the LoadMode. -func (ld *loader) refine(roots []string, list ...*Package) ([]*Package, error) { - rootMap := make(map[string]int, len(roots)) - for i, root := range roots { - rootMap[root] = i - } - ld.pkgs = make(map[string]*loaderPackage) - // first pass, fixup and build the map and roots - var initial = make([]*loaderPackage, len(roots)) - for _, pkg := range list { - rootIndex := -1 - if i, found := rootMap[pkg.ID]; found { - rootIndex = i - } - - // Overlays can invalidate export data. - // TODO(matloob): make this check fine-grained based on dependencies on overlaid files - exportDataInvalid := len(ld.Overlay) > 0 || pkg.ExportFile == "" && pkg.PkgPath != "unsafe" - // This package needs type information if the caller requested types and the package is - // either a root, or it's a non-root and the user requested dependencies ... - needtypes := (ld.Mode&NeedTypes|NeedTypesInfo != 0 && (rootIndex >= 0 || ld.Mode&NeedDeps != 0)) - // This package needs source if the call requested source (or types info, which implies source) - // and the package is either a root, or itas a non- root and the user requested dependencies... - needsrc := ((ld.Mode&(NeedSyntax|NeedTypesInfo) != 0 && (rootIndex >= 0 || ld.Mode&NeedDeps != 0)) || - // ... or if we need types and the exportData is invalid. We fall back to (incompletely) - // typechecking packages from source if they fail to compile. - (ld.Mode&NeedTypes|NeedTypesInfo != 0 && exportDataInvalid)) && pkg.PkgPath != "unsafe" - lpkg := &loaderPackage{ - Package: pkg, - needtypes: needtypes, - needsrc: needsrc, - } - ld.pkgs[lpkg.ID] = lpkg - if rootIndex >= 0 { - initial[rootIndex] = lpkg - lpkg.initial = true - } - } - for i, root := range roots { - if initial[i] == nil { - return nil, fmt.Errorf("root package %v is missing", root) - } - } - - // Materialize the import graph. - - const ( - white = 0 // new - grey = 1 // in progress - black = 2 // complete - ) - - // visit traverses the import graph, depth-first, - // and materializes the graph as Packages.Imports. - // - // Valid imports are saved in the Packages.Import map. - // Invalid imports (cycles and missing nodes) are saved in the importErrors map. - // Thus, even in the presence of both kinds of errors, the Import graph remains a DAG. - // - // visit returns whether the package needs src or has a transitive - // dependency on a package that does. These are the only packages - // for which we load source code. - var stack []*loaderPackage - var visit func(lpkg *loaderPackage) bool - var srcPkgs []*loaderPackage - visit = func(lpkg *loaderPackage) bool { - switch lpkg.color { - case black: - return lpkg.needsrc - case grey: - panic("internal error: grey node") - } - lpkg.color = grey - stack = append(stack, lpkg) // push - stubs := lpkg.Imports // the structure form has only stubs with the ID in the Imports - // If NeedImports isn't set, the imports fields will all be zeroed out. - if ld.Mode&NeedImports != 0 { - lpkg.Imports = make(map[string]*Package, len(stubs)) - for importPath, ipkg := range stubs { - var importErr error - imp := ld.pkgs[ipkg.ID] - if imp == nil { - // (includes package "C" when DisableCgo) - importErr = fmt.Errorf("missing package: %q", ipkg.ID) - } else if imp.color == grey { - importErr = fmt.Errorf("import cycle: %s", stack) - } - if importErr != nil { - if lpkg.importErrors == nil { - lpkg.importErrors = make(map[string]error) - } - lpkg.importErrors[importPath] = importErr - continue - } - - if visit(imp) { - lpkg.needsrc = true - } - lpkg.Imports[importPath] = imp.Package - } - } - if lpkg.needsrc { - srcPkgs = append(srcPkgs, lpkg) - } - if ld.Mode&NeedTypesSizes != 0 { - lpkg.TypesSizes = ld.sizes - } - stack = stack[:len(stack)-1] // pop - lpkg.color = black - - return lpkg.needsrc - } - - if ld.Mode&NeedImports == 0 { - // We do this to drop the stub import packages that we are not even going to try to resolve. - for _, lpkg := range initial { - lpkg.Imports = nil - } - } else { - // For each initial package, create its import DAG. - for _, lpkg := range initial { - visit(lpkg) - } - } - if ld.Mode&NeedImports != 0 && ld.Mode&NeedTypes != 0 { - for _, lpkg := range srcPkgs { - // Complete type information is required for the - // immediate dependencies of each source package. - for _, ipkg := range lpkg.Imports { - imp := ld.pkgs[ipkg.ID] - imp.needtypes = true - } - } - } - // Load type data and syntax if needed, starting at - // the initial packages (roots of the import DAG). - if ld.Mode&NeedTypes != 0 || ld.Mode&NeedSyntax != 0 { - var wg sync.WaitGroup - for _, lpkg := range initial { - wg.Add(1) - go func(lpkg *loaderPackage) { - ld.loadRecursive(lpkg) - wg.Done() - }(lpkg) - } - wg.Wait() - } - - result := make([]*Package, len(initial)) - for i, lpkg := range initial { - result[i] = lpkg.Package - } - for i := range ld.pkgs { - // Clear all unrequested fields, - // to catch programs that use more than they request. - if ld.requestedMode&NeedName == 0 { - ld.pkgs[i].Name = "" - ld.pkgs[i].PkgPath = "" - } - if ld.requestedMode&NeedFiles == 0 { - ld.pkgs[i].GoFiles = nil - ld.pkgs[i].OtherFiles = nil - ld.pkgs[i].IgnoredFiles = nil - } - if ld.requestedMode&NeedCompiledGoFiles == 0 { - ld.pkgs[i].CompiledGoFiles = nil - } - if ld.requestedMode&NeedImports == 0 { - ld.pkgs[i].Imports = nil - } - if ld.requestedMode&NeedExportsFile == 0 { - ld.pkgs[i].ExportFile = "" - } - if ld.requestedMode&NeedTypes == 0 { - ld.pkgs[i].Types = nil - ld.pkgs[i].Fset = nil - ld.pkgs[i].IllTyped = false - } - if ld.requestedMode&NeedSyntax == 0 { - ld.pkgs[i].Syntax = nil - } - if ld.requestedMode&NeedTypesInfo == 0 { - ld.pkgs[i].TypesInfo = nil - } - if ld.requestedMode&NeedTypesSizes == 0 { - ld.pkgs[i].TypesSizes = nil - } - if ld.requestedMode&NeedModule == 0 { - ld.pkgs[i].Module = nil - } - } - - return result, nil -} - -// loadRecursive loads the specified package and its dependencies, -// recursively, in parallel, in topological order. -// It is atomic and idempotent. -// Precondition: ld.Mode&NeedTypes. -func (ld *loader) loadRecursive(lpkg *loaderPackage) { - lpkg.loadOnce.Do(func() { - // Load the direct dependencies, in parallel. - var wg sync.WaitGroup - for _, ipkg := range lpkg.Imports { - imp := ld.pkgs[ipkg.ID] - wg.Add(1) - go func(imp *loaderPackage) { - ld.loadRecursive(imp) - wg.Done() - }(imp) - } - wg.Wait() - ld.loadPackage(lpkg) - }) -} - -// loadPackage loads the specified package. -// It must be called only once per Package, -// after immediate dependencies are loaded. -// Precondition: ld.Mode & NeedTypes. -func (ld *loader) loadPackage(lpkg *loaderPackage) { - if lpkg.PkgPath == "unsafe" { - // Fill in the blanks to avoid surprises. - lpkg.Types = types.Unsafe - lpkg.Fset = ld.Fset - lpkg.Syntax = []*ast.File{} - lpkg.TypesInfo = new(types.Info) - lpkg.TypesSizes = ld.sizes - return - } - - // Call NewPackage directly with explicit name. - // This avoids skew between golist and go/types when the files' - // package declarations are inconsistent. - lpkg.Types = types.NewPackage(lpkg.PkgPath, lpkg.Name) - lpkg.Fset = ld.Fset - - // Subtle: we populate all Types fields with an empty Package - // before loading export data so that export data processing - // never has to create a types.Package for an indirect dependency, - // which would then require that such created packages be explicitly - // inserted back into the Import graph as a final step after export data loading. - // The Diamond test exercises this case. - if !lpkg.needtypes && !lpkg.needsrc { - return - } - if !lpkg.needsrc { - ld.loadFromExportData(lpkg) - return // not a source package, don't get syntax trees - } - - appendError := func(err error) { - // Convert various error types into the one true Error. - var errs []Error - switch err := err.(type) { - case Error: - // from driver - errs = append(errs, err) - - case *os.PathError: - // from parser - errs = append(errs, Error{ - Pos: err.Path + ":1", - Msg: err.Err.Error(), - Kind: ParseError, - }) - - case scanner.ErrorList: - // from parser - for _, err := range err { - errs = append(errs, Error{ - Pos: err.Pos.String(), - Msg: err.Msg, - Kind: ParseError, - }) - } - - case types.Error: - // from type checker - errs = append(errs, Error{ - Pos: err.Fset.Position(err.Pos).String(), - Msg: err.Msg, - Kind: TypeError, - }) - - default: - // unexpected impoverished error from parser? - errs = append(errs, Error{ - Pos: "-", - Msg: err.Error(), - Kind: UnknownError, - }) - - // If you see this error message, please file a bug. - log.Printf("internal error: error %q (%T) without position", err, err) - } - - lpkg.Errors = append(lpkg.Errors, errs...) - } - - if ld.Config.Mode&NeedTypes != 0 && len(lpkg.CompiledGoFiles) == 0 && lpkg.ExportFile != "" { - // The config requested loading sources and types, but sources are missing. - // Add an error to the package and fall back to loading from export data. - appendError(Error{"-", fmt.Sprintf("sources missing for package %s", lpkg.ID), ParseError}) - ld.loadFromExportData(lpkg) - return // can't get syntax trees for this package - } - - files, errs := ld.parseFiles(lpkg.CompiledGoFiles) - for _, err := range errs { - appendError(err) - } - - lpkg.Syntax = files - if ld.Config.Mode&NeedTypes == 0 { - return - } - - lpkg.TypesInfo = &types.Info{ - Types: make(map[ast.Expr]types.TypeAndValue), - Defs: make(map[*ast.Ident]types.Object), - Uses: make(map[*ast.Ident]types.Object), - Implicits: make(map[ast.Node]types.Object), - Scopes: make(map[ast.Node]*types.Scope), - Selections: make(map[*ast.SelectorExpr]*types.Selection), - } - typeparams.InitInstanceInfo(lpkg.TypesInfo) - lpkg.TypesSizes = ld.sizes - - importer := importerFunc(func(path string) (*types.Package, error) { - if path == "unsafe" { - return types.Unsafe, nil - } - - // The imports map is keyed by import path. - ipkg := lpkg.Imports[path] - if ipkg == nil { - if err := lpkg.importErrors[path]; err != nil { - return nil, err - } - // There was skew between the metadata and the - // import declarations, likely due to an edit - // race, or because the ParseFile feature was - // used to supply alternative file contents. - return nil, fmt.Errorf("no metadata for %s", path) - } - - if ipkg.Types != nil && ipkg.Types.Complete() { - return ipkg.Types, nil - } - log.Fatalf("internal error: package %q without types was imported from %q", path, lpkg) - panic("unreachable") - }) - - // type-check - tc := &types.Config{ - Importer: importer, - - // Type-check bodies of functions only in non-initial packages. - // Example: for import graph A->B->C and initial packages {A,C}, - // we can ignore function bodies in B. - IgnoreFuncBodies: ld.Mode&NeedDeps == 0 && !lpkg.initial, - - Error: appendError, - Sizes: ld.sizes, - } - if (ld.Mode & typecheckCgo) != 0 { - if !typesinternal.SetUsesCgo(tc) { - appendError(Error{ - Msg: "typecheckCgo requires Go 1.15+", - Kind: ListError, - }) - return - } - } - types.NewChecker(tc, ld.Fset, lpkg.Types, lpkg.TypesInfo).Files(lpkg.Syntax) - - lpkg.importErrors = nil // no longer needed - - // If !Cgo, the type-checker uses FakeImportC mode, so - // it doesn't invoke the importer for import "C", - // nor report an error for the import, - // or for any undefined C.f reference. - // We must detect this explicitly and correctly - // mark the package as IllTyped (by reporting an error). - // TODO(adonovan): if these errors are annoying, - // we could just set IllTyped quietly. - if tc.FakeImportC { - outer: - for _, f := range lpkg.Syntax { - for _, imp := range f.Imports { - if imp.Path.Value == `"C"` { - err := types.Error{Fset: ld.Fset, Pos: imp.Pos(), Msg: `import "C" ignored`} - appendError(err) - break outer - } - } - } - } - - // Record accumulated errors. - illTyped := len(lpkg.Errors) > 0 - if !illTyped { - for _, imp := range lpkg.Imports { - if imp.IllTyped { - illTyped = true - break - } - } - } - lpkg.IllTyped = illTyped -} - -// An importFunc is an implementation of the single-method -// types.Importer interface based on a function value. -type importerFunc func(path string) (*types.Package, error) - -func (f importerFunc) Import(path string) (*types.Package, error) { return f(path) } - -// We use a counting semaphore to limit -// the number of parallel I/O calls per process. -var ioLimit = make(chan bool, 20) - -func (ld *loader) parseFile(filename string) (*ast.File, error) { - ld.parseCacheMu.Lock() - v, ok := ld.parseCache[filename] - if ok { - // cache hit - ld.parseCacheMu.Unlock() - <-v.ready - } else { - // cache miss - v = &parseValue{ready: make(chan struct{})} - ld.parseCache[filename] = v - ld.parseCacheMu.Unlock() - - var src []byte - for f, contents := range ld.Config.Overlay { - if sameFile(f, filename) { - src = contents - } - } - var err error - if src == nil { - ioLimit <- true // wait - src, err = ioutil.ReadFile(filename) - <-ioLimit // signal - } - if err != nil { - v.err = err - } else { - v.f, v.err = ld.ParseFile(ld.Fset, filename, src) - } - - close(v.ready) - } - return v.f, v.err -} - -// parseFiles reads and parses the Go source files and returns the ASTs -// of the ones that could be at least partially parsed, along with a -// list of I/O and parse errors encountered. -// -// Because files are scanned in parallel, the token.Pos -// positions of the resulting ast.Files are not ordered. -// -func (ld *loader) parseFiles(filenames []string) ([]*ast.File, []error) { - var wg sync.WaitGroup - n := len(filenames) - parsed := make([]*ast.File, n) - errors := make([]error, n) - for i, file := range filenames { - if ld.Config.Context.Err() != nil { - parsed[i] = nil - errors[i] = ld.Config.Context.Err() - continue - } - wg.Add(1) - go func(i int, filename string) { - parsed[i], errors[i] = ld.parseFile(filename) - wg.Done() - }(i, file) - } - wg.Wait() - - // Eliminate nils, preserving order. - var o int - for _, f := range parsed { - if f != nil { - parsed[o] = f - o++ - } - } - parsed = parsed[:o] - - o = 0 - for _, err := range errors { - if err != nil { - errors[o] = err - o++ - } - } - errors = errors[:o] - - return parsed, errors -} - -// sameFile returns true if x and y have the same basename and denote -// the same file. -// -func sameFile(x, y string) bool { - if x == y { - // It could be the case that y doesn't exist. - // For instance, it may be an overlay file that - // hasn't been written to disk. To handle that case - // let x == y through. (We added the exact absolute path - // string to the CompiledGoFiles list, so the unwritten - // overlay case implies x==y.) - return true - } - if strings.EqualFold(filepath.Base(x), filepath.Base(y)) { // (optimisation) - if xi, err := os.Stat(x); err == nil { - if yi, err := os.Stat(y); err == nil { - return os.SameFile(xi, yi) - } - } - } - return false -} - -// loadFromExportData returns type information for the specified -// package, loading it from an export data file on the first request. -func (ld *loader) loadFromExportData(lpkg *loaderPackage) (*types.Package, error) { - if lpkg.PkgPath == "" { - log.Fatalf("internal error: Package %s has no PkgPath", lpkg) - } - - // Because gcexportdata.Read has the potential to create or - // modify the types.Package for each node in the transitive - // closure of dependencies of lpkg, all exportdata operations - // must be sequential. (Finer-grained locking would require - // changes to the gcexportdata API.) - // - // The exportMu lock guards the Package.Pkg field and the - // types.Package it points to, for each Package in the graph. - // - // Not all accesses to Package.Pkg need to be protected by exportMu: - // graph ordering ensures that direct dependencies of source - // packages are fully loaded before the importer reads their Pkg field. - ld.exportMu.Lock() - defer ld.exportMu.Unlock() - - if tpkg := lpkg.Types; tpkg != nil && tpkg.Complete() { - return tpkg, nil // cache hit - } - - lpkg.IllTyped = true // fail safe - - if lpkg.ExportFile == "" { - // Errors while building export data will have been printed to stderr. - return nil, fmt.Errorf("no export data file") - } - f, err := os.Open(lpkg.ExportFile) - if err != nil { - return nil, err - } - defer f.Close() - - // Read gc export data. - // - // We don't currently support gccgo export data because all - // underlying workspaces use the gc toolchain. (Even build - // systems that support gccgo don't use it for workspace - // queries.) - r, err := gcexportdata.NewReader(f) - if err != nil { - return nil, fmt.Errorf("reading %s: %v", lpkg.ExportFile, err) - } - - // Build the view. - // - // The gcexportdata machinery has no concept of package ID. - // It identifies packages by their PkgPath, which although not - // globally unique is unique within the scope of one invocation - // of the linker, type-checker, or gcexportdata. - // - // So, we must build a PkgPath-keyed view of the global - // (conceptually ID-keyed) cache of packages and pass it to - // gcexportdata. The view must contain every existing - // package that might possibly be mentioned by the - // current package---its transitive closure. - // - // In loadPackage, we unconditionally create a types.Package for - // each dependency so that export data loading does not - // create new ones. - // - // TODO(adonovan): it would be simpler and more efficient - // if the export data machinery invoked a callback to - // get-or-create a package instead of a map. - // - view := make(map[string]*types.Package) // view seen by gcexportdata - seen := make(map[*loaderPackage]bool) // all visited packages - var visit func(pkgs map[string]*Package) - visit = func(pkgs map[string]*Package) { - for _, p := range pkgs { - lpkg := ld.pkgs[p.ID] - if !seen[lpkg] { - seen[lpkg] = true - view[lpkg.PkgPath] = lpkg.Types - visit(lpkg.Imports) - } - } - } - visit(lpkg.Imports) - - viewLen := len(view) + 1 // adding the self package - // Parse the export data. - // (May modify incomplete packages in view but not create new ones.) - tpkg, err := gcexportdata.Read(r, ld.Fset, view, lpkg.PkgPath) - if err != nil { - return nil, fmt.Errorf("reading %s: %v", lpkg.ExportFile, err) - } - if viewLen != len(view) { - log.Fatalf("Unexpected package creation during export data loading") - } - - lpkg.Types = tpkg - lpkg.IllTyped = false - - return tpkg, nil -} - -// impliedLoadMode returns loadMode with its dependencies. -func impliedLoadMode(loadMode LoadMode) LoadMode { - if loadMode&NeedTypesInfo != 0 && loadMode&NeedImports == 0 { - // If NeedTypesInfo, go/packages needs to do typechecking itself so it can - // associate type info with the AST. To do so, we need the export data - // for dependencies, which means we need to ask for the direct dependencies. - // NeedImports is used to ask for the direct dependencies. - loadMode |= NeedImports - } - - if loadMode&NeedDeps != 0 && loadMode&NeedImports == 0 { - // With NeedDeps we need to load at least direct dependencies. - // NeedImports is used to ask for the direct dependencies. - loadMode |= NeedImports - } - - return loadMode -} - -func usesExportData(cfg *Config) bool { - return cfg.Mode&NeedExportsFile != 0 || cfg.Mode&NeedTypes != 0 && cfg.Mode&NeedDeps == 0 -} diff --git a/vendor/golang.org/x/tools/go/packages/visit.go b/vendor/golang.org/x/tools/go/packages/visit.go deleted file mode 100644 index a1dcc40b7..000000000 --- a/vendor/golang.org/x/tools/go/packages/visit.go +++ /dev/null @@ -1,59 +0,0 @@ -// Copyright 2018 The Go Authors. All rights reserved. -// Use of this source code is governed by a BSD-style -// license that can be found in the LICENSE file. - -package packages - -import ( - "fmt" - "os" - "sort" -) - -// Visit visits all the packages in the import graph whose roots are -// pkgs, calling the optional pre function the first time each package -// is encountered (preorder), and the optional post function after a -// package's dependencies have been visited (postorder). -// The boolean result of pre(pkg) determines whether -// the imports of package pkg are visited. -func Visit(pkgs []*Package, pre func(*Package) bool, post func(*Package)) { - seen := make(map[*Package]bool) - var visit func(*Package) - visit = func(pkg *Package) { - if !seen[pkg] { - seen[pkg] = true - - if pre == nil || pre(pkg) { - paths := make([]string, 0, len(pkg.Imports)) - for path := range pkg.Imports { - paths = append(paths, path) - } - sort.Strings(paths) // Imports is a map, this makes visit stable - for _, path := range paths { - visit(pkg.Imports[path]) - } - } - - if post != nil { - post(pkg) - } - } - } - for _, pkg := range pkgs { - visit(pkg) - } -} - -// PrintErrors prints to os.Stderr the accumulated errors of all -// packages in the import graph rooted at pkgs, dependencies first. -// PrintErrors returns the number of errors printed. -func PrintErrors(pkgs []*Package) int { - var n int - Visit(pkgs, nil, func(pkg *Package) { - for _, err := range pkg.Errors { - fmt.Fprintln(os.Stderr, err) - n++ - } - }) - return n -} diff --git a/vendor/golang.org/x/tools/internal/event/core/event.go b/vendor/golang.org/x/tools/internal/event/core/event.go deleted file mode 100644 index a6cf0e64a..000000000 --- a/vendor/golang.org/x/tools/internal/event/core/event.go +++ /dev/null @@ -1,85 +0,0 @@ -// Copyright 2019 The Go Authors. All rights reserved. -// Use of this source code is governed by a BSD-style -// license that can be found in the LICENSE file. - -// Package core provides support for event based telemetry. -package core - -import ( - "fmt" - "time" - - "golang.org/x/tools/internal/event/label" -) - -// Event holds the information about an event of note that occurred. -type Event struct { - at time.Time - - // As events are often on the stack, storing the first few labels directly - // in the event can avoid an allocation at all for the very common cases of - // simple events. - // The length needs to be large enough to cope with the majority of events - // but no so large as to cause undue stack pressure. - // A log message with two values will use 3 labels (one for each value and - // one for the message itself). - - static [3]label.Label // inline storage for the first few labels - dynamic []label.Label // dynamically sized storage for remaining labels -} - -// eventLabelMap implements label.Map for a the labels of an Event. -type eventLabelMap struct { - event Event -} - -func (ev Event) At() time.Time { return ev.at } - -func (ev Event) Format(f fmt.State, r rune) { - if !ev.at.IsZero() { - fmt.Fprint(f, ev.at.Format("2006/01/02 15:04:05 ")) - } - for index := 0; ev.Valid(index); index++ { - if l := ev.Label(index); l.Valid() { - fmt.Fprintf(f, "\n\t%v", l) - } - } -} - -func (ev Event) Valid(index int) bool { - return index >= 0 && index < len(ev.static)+len(ev.dynamic) -} - -func (ev Event) Label(index int) label.Label { - if index < len(ev.static) { - return ev.static[index] - } - return ev.dynamic[index-len(ev.static)] -} - -func (ev Event) Find(key label.Key) label.Label { - for _, l := range ev.static { - if l.Key() == key { - return l - } - } - for _, l := range ev.dynamic { - if l.Key() == key { - return l - } - } - return label.Label{} -} - -func MakeEvent(static [3]label.Label, labels []label.Label) Event { - return Event{ - static: static, - dynamic: labels, - } -} - -// CloneEvent event returns a copy of the event with the time adjusted to at. -func CloneEvent(ev Event, at time.Time) Event { - ev.at = at - return ev -} diff --git a/vendor/golang.org/x/tools/internal/event/core/export.go b/vendor/golang.org/x/tools/internal/event/core/export.go deleted file mode 100644 index 05f3a9a57..000000000 --- a/vendor/golang.org/x/tools/internal/event/core/export.go +++ /dev/null @@ -1,70 +0,0 @@ -// Copyright 2019 The Go Authors. All rights reserved. -// Use of this source code is governed by a BSD-style -// license that can be found in the LICENSE file. - -package core - -import ( - "context" - "sync/atomic" - "time" - "unsafe" - - "golang.org/x/tools/internal/event/label" -) - -// Exporter is a function that handles events. -// It may return a modified context and event. -type Exporter func(context.Context, Event, label.Map) context.Context - -var ( - exporter unsafe.Pointer -) - -// SetExporter sets the global exporter function that handles all events. -// The exporter is called synchronously from the event call site, so it should -// return quickly so as not to hold up user code. -func SetExporter(e Exporter) { - p := unsafe.Pointer(&e) - if e == nil { - // &e is always valid, and so p is always valid, but for the early abort - // of ProcessEvent to be efficient it needs to make the nil check on the - // pointer without having to dereference it, so we make the nil function - // also a nil pointer - p = nil - } - atomic.StorePointer(&exporter, p) -} - -// deliver is called to deliver an event to the supplied exporter. -// it will fill in the time. -func deliver(ctx context.Context, exporter Exporter, ev Event) context.Context { - // add the current time to the event - ev.at = time.Now() - // hand the event off to the current exporter - return exporter(ctx, ev, ev) -} - -// Export is called to deliver an event to the global exporter if set. -func Export(ctx context.Context, ev Event) context.Context { - // get the global exporter and abort early if there is not one - exporterPtr := (*Exporter)(atomic.LoadPointer(&exporter)) - if exporterPtr == nil { - return ctx - } - return deliver(ctx, *exporterPtr, ev) -} - -// ExportPair is called to deliver a start event to the supplied exporter. -// It also returns a function that will deliver the end event to the same -// exporter. -// It will fill in the time. -func ExportPair(ctx context.Context, begin, end Event) (context.Context, func()) { - // get the global exporter and abort early if there is not one - exporterPtr := (*Exporter)(atomic.LoadPointer(&exporter)) - if exporterPtr == nil { - return ctx, func() {} - } - ctx = deliver(ctx, *exporterPtr, begin) - return ctx, func() { deliver(ctx, *exporterPtr, end) } -} diff --git a/vendor/golang.org/x/tools/internal/event/core/fast.go b/vendor/golang.org/x/tools/internal/event/core/fast.go deleted file mode 100644 index 06c1d4615..000000000 --- a/vendor/golang.org/x/tools/internal/event/core/fast.go +++ /dev/null @@ -1,77 +0,0 @@ -// Copyright 2019 The Go Authors. All rights reserved. -// Use of this source code is governed by a BSD-style -// license that can be found in the LICENSE file. - -package core - -import ( - "context" - - "golang.org/x/tools/internal/event/keys" - "golang.org/x/tools/internal/event/label" -) - -// Log1 takes a message and one label delivers a log event to the exporter. -// It is a customized version of Print that is faster and does no allocation. -func Log1(ctx context.Context, message string, t1 label.Label) { - Export(ctx, MakeEvent([3]label.Label{ - keys.Msg.Of(message), - t1, - }, nil)) -} - -// Log2 takes a message and two labels and delivers a log event to the exporter. -// It is a customized version of Print that is faster and does no allocation. -func Log2(ctx context.Context, message string, t1 label.Label, t2 label.Label) { - Export(ctx, MakeEvent([3]label.Label{ - keys.Msg.Of(message), - t1, - t2, - }, nil)) -} - -// Metric1 sends a label event to the exporter with the supplied labels. -func Metric1(ctx context.Context, t1 label.Label) context.Context { - return Export(ctx, MakeEvent([3]label.Label{ - keys.Metric.New(), - t1, - }, nil)) -} - -// Metric2 sends a label event to the exporter with the supplied labels. -func Metric2(ctx context.Context, t1, t2 label.Label) context.Context { - return Export(ctx, MakeEvent([3]label.Label{ - keys.Metric.New(), - t1, - t2, - }, nil)) -} - -// Start1 sends a span start event with the supplied label list to the exporter. -// It also returns a function that will end the span, which should normally be -// deferred. -func Start1(ctx context.Context, name string, t1 label.Label) (context.Context, func()) { - return ExportPair(ctx, - MakeEvent([3]label.Label{ - keys.Start.Of(name), - t1, - }, nil), - MakeEvent([3]label.Label{ - keys.End.New(), - }, nil)) -} - -// Start2 sends a span start event with the supplied label list to the exporter. -// It also returns a function that will end the span, which should normally be -// deferred. -func Start2(ctx context.Context, name string, t1, t2 label.Label) (context.Context, func()) { - return ExportPair(ctx, - MakeEvent([3]label.Label{ - keys.Start.Of(name), - t1, - t2, - }, nil), - MakeEvent([3]label.Label{ - keys.End.New(), - }, nil)) -} diff --git a/vendor/golang.org/x/tools/internal/event/doc.go b/vendor/golang.org/x/tools/internal/event/doc.go deleted file mode 100644 index 5dc6e6bab..000000000 --- a/vendor/golang.org/x/tools/internal/event/doc.go +++ /dev/null @@ -1,7 +0,0 @@ -// Copyright 2019 The Go Authors. All rights reserved. -// Use of this source code is governed by a BSD-style -// license that can be found in the LICENSE file. - -// Package event provides a set of packages that cover the main -// concepts of telemetry in an implementation agnostic way. -package event diff --git a/vendor/golang.org/x/tools/internal/event/event.go b/vendor/golang.org/x/tools/internal/event/event.go deleted file mode 100644 index 4d55e577d..000000000 --- a/vendor/golang.org/x/tools/internal/event/event.go +++ /dev/null @@ -1,127 +0,0 @@ -// Copyright 2019 The Go Authors. All rights reserved. -// Use of this source code is governed by a BSD-style -// license that can be found in the LICENSE file. - -package event - -import ( - "context" - - "golang.org/x/tools/internal/event/core" - "golang.org/x/tools/internal/event/keys" - "golang.org/x/tools/internal/event/label" -) - -// Exporter is a function that handles events. -// It may return a modified context and event. -type Exporter func(context.Context, core.Event, label.Map) context.Context - -// SetExporter sets the global exporter function that handles all events. -// The exporter is called synchronously from the event call site, so it should -// return quickly so as not to hold up user code. -func SetExporter(e Exporter) { - core.SetExporter(core.Exporter(e)) -} - -// Log takes a message and a label list and combines them into a single event -// before delivering them to the exporter. -func Log(ctx context.Context, message string, labels ...label.Label) { - core.Export(ctx, core.MakeEvent([3]label.Label{ - keys.Msg.Of(message), - }, labels)) -} - -// IsLog returns true if the event was built by the Log function. -// It is intended to be used in exporters to identify the semantics of the -// event when deciding what to do with it. -func IsLog(ev core.Event) bool { - return ev.Label(0).Key() == keys.Msg -} - -// Error takes a message and a label list and combines them into a single event -// before delivering them to the exporter. It captures the error in the -// delivered event. -func Error(ctx context.Context, message string, err error, labels ...label.Label) { - core.Export(ctx, core.MakeEvent([3]label.Label{ - keys.Msg.Of(message), - keys.Err.Of(err), - }, labels)) -} - -// IsError returns true if the event was built by the Error function. -// It is intended to be used in exporters to identify the semantics of the -// event when deciding what to do with it. -func IsError(ev core.Event) bool { - return ev.Label(0).Key() == keys.Msg && - ev.Label(1).Key() == keys.Err -} - -// Metric sends a label event to the exporter with the supplied labels. -func Metric(ctx context.Context, labels ...label.Label) { - core.Export(ctx, core.MakeEvent([3]label.Label{ - keys.Metric.New(), - }, labels)) -} - -// IsMetric returns true if the event was built by the Metric function. -// It is intended to be used in exporters to identify the semantics of the -// event when deciding what to do with it. -func IsMetric(ev core.Event) bool { - return ev.Label(0).Key() == keys.Metric -} - -// Label sends a label event to the exporter with the supplied labels. -func Label(ctx context.Context, labels ...label.Label) context.Context { - return core.Export(ctx, core.MakeEvent([3]label.Label{ - keys.Label.New(), - }, labels)) -} - -// IsLabel returns true if the event was built by the Label function. -// It is intended to be used in exporters to identify the semantics of the -// event when deciding what to do with it. -func IsLabel(ev core.Event) bool { - return ev.Label(0).Key() == keys.Label -} - -// Start sends a span start event with the supplied label list to the exporter. -// It also returns a function that will end the span, which should normally be -// deferred. -func Start(ctx context.Context, name string, labels ...label.Label) (context.Context, func()) { - return core.ExportPair(ctx, - core.MakeEvent([3]label.Label{ - keys.Start.Of(name), - }, labels), - core.MakeEvent([3]label.Label{ - keys.End.New(), - }, nil)) -} - -// IsStart returns true if the event was built by the Start function. -// It is intended to be used in exporters to identify the semantics of the -// event when deciding what to do with it. -func IsStart(ev core.Event) bool { - return ev.Label(0).Key() == keys.Start -} - -// IsEnd returns true if the event was built by the End function. -// It is intended to be used in exporters to identify the semantics of the -// event when deciding what to do with it. -func IsEnd(ev core.Event) bool { - return ev.Label(0).Key() == keys.End -} - -// Detach returns a context without an associated span. -// This allows the creation of spans that are not children of the current span. -func Detach(ctx context.Context) context.Context { - return core.Export(ctx, core.MakeEvent([3]label.Label{ - keys.Detach.New(), - }, nil)) -} - -// IsDetach returns true if the event was built by the Detach function. -// It is intended to be used in exporters to identify the semantics of the -// event when deciding what to do with it. -func IsDetach(ev core.Event) bool { - return ev.Label(0).Key() == keys.Detach -} diff --git a/vendor/golang.org/x/tools/internal/event/keys/keys.go b/vendor/golang.org/x/tools/internal/event/keys/keys.go deleted file mode 100644 index a02206e30..000000000 --- a/vendor/golang.org/x/tools/internal/event/keys/keys.go +++ /dev/null @@ -1,564 +0,0 @@ -// Copyright 2019 The Go Authors. All rights reserved. -// Use of this source code is governed by a BSD-style -// license that can be found in the LICENSE file. - -package keys - -import ( - "fmt" - "io" - "math" - "strconv" - - "golang.org/x/tools/internal/event/label" -) - -// Value represents a key for untyped values. -type Value struct { - name string - description string -} - -// New creates a new Key for untyped values. -func New(name, description string) *Value { - return &Value{name: name, description: description} -} - -func (k *Value) Name() string { return k.name } -func (k *Value) Description() string { return k.description } - -func (k *Value) Format(w io.Writer, buf []byte, l label.Label) { - fmt.Fprint(w, k.From(l)) -} - -// Get can be used to get a label for the key from a label.Map. -func (k *Value) Get(lm label.Map) interface{} { - if t := lm.Find(k); t.Valid() { - return k.From(t) - } - return nil -} - -// From can be used to get a value from a Label. -func (k *Value) From(t label.Label) interface{} { return t.UnpackValue() } - -// Of creates a new Label with this key and the supplied value. -func (k *Value) Of(value interface{}) label.Label { return label.OfValue(k, value) } - -// Tag represents a key for tagging labels that have no value. -// These are used when the existence of the label is the entire information it -// carries, such as marking events to be of a specific kind, or from a specific -// package. -type Tag struct { - name string - description string -} - -// NewTag creates a new Key for tagging labels. -func NewTag(name, description string) *Tag { - return &Tag{name: name, description: description} -} - -func (k *Tag) Name() string { return k.name } -func (k *Tag) Description() string { return k.description } - -func (k *Tag) Format(w io.Writer, buf []byte, l label.Label) {} - -// New creates a new Label with this key. -func (k *Tag) New() label.Label { return label.OfValue(k, nil) } - -// Int represents a key -type Int struct { - name string - description string -} - -// NewInt creates a new Key for int values. -func NewInt(name, description string) *Int { - return &Int{name: name, description: description} -} - -func (k *Int) Name() string { return k.name } -func (k *Int) Description() string { return k.description } - -func (k *Int) Format(w io.Writer, buf []byte, l label.Label) { - w.Write(strconv.AppendInt(buf, int64(k.From(l)), 10)) -} - -// Of creates a new Label with this key and the supplied value. -func (k *Int) Of(v int) label.Label { return label.Of64(k, uint64(v)) } - -// Get can be used to get a label for the key from a label.Map. -func (k *Int) Get(lm label.Map) int { - if t := lm.Find(k); t.Valid() { - return k.From(t) - } - return 0 -} - -// From can be used to get a value from a Label. -func (k *Int) From(t label.Label) int { return int(t.Unpack64()) } - -// Int8 represents a key -type Int8 struct { - name string - description string -} - -// NewInt8 creates a new Key for int8 values. -func NewInt8(name, description string) *Int8 { - return &Int8{name: name, description: description} -} - -func (k *Int8) Name() string { return k.name } -func (k *Int8) Description() string { return k.description } - -func (k *Int8) Format(w io.Writer, buf []byte, l label.Label) { - w.Write(strconv.AppendInt(buf, int64(k.From(l)), 10)) -} - -// Of creates a new Label with this key and the supplied value. -func (k *Int8) Of(v int8) label.Label { return label.Of64(k, uint64(v)) } - -// Get can be used to get a label for the key from a label.Map. -func (k *Int8) Get(lm label.Map) int8 { - if t := lm.Find(k); t.Valid() { - return k.From(t) - } - return 0 -} - -// From can be used to get a value from a Label. -func (k *Int8) From(t label.Label) int8 { return int8(t.Unpack64()) } - -// Int16 represents a key -type Int16 struct { - name string - description string -} - -// NewInt16 creates a new Key for int16 values. -func NewInt16(name, description string) *Int16 { - return &Int16{name: name, description: description} -} - -func (k *Int16) Name() string { return k.name } -func (k *Int16) Description() string { return k.description } - -func (k *Int16) Format(w io.Writer, buf []byte, l label.Label) { - w.Write(strconv.AppendInt(buf, int64(k.From(l)), 10)) -} - -// Of creates a new Label with this key and the supplied value. -func (k *Int16) Of(v int16) label.Label { return label.Of64(k, uint64(v)) } - -// Get can be used to get a label for the key from a label.Map. -func (k *Int16) Get(lm label.Map) int16 { - if t := lm.Find(k); t.Valid() { - return k.From(t) - } - return 0 -} - -// From can be used to get a value from a Label. -func (k *Int16) From(t label.Label) int16 { return int16(t.Unpack64()) } - -// Int32 represents a key -type Int32 struct { - name string - description string -} - -// NewInt32 creates a new Key for int32 values. -func NewInt32(name, description string) *Int32 { - return &Int32{name: name, description: description} -} - -func (k *Int32) Name() string { return k.name } -func (k *Int32) Description() string { return k.description } - -func (k *Int32) Format(w io.Writer, buf []byte, l label.Label) { - w.Write(strconv.AppendInt(buf, int64(k.From(l)), 10)) -} - -// Of creates a new Label with this key and the supplied value. -func (k *Int32) Of(v int32) label.Label { return label.Of64(k, uint64(v)) } - -// Get can be used to get a label for the key from a label.Map. -func (k *Int32) Get(lm label.Map) int32 { - if t := lm.Find(k); t.Valid() { - return k.From(t) - } - return 0 -} - -// From can be used to get a value from a Label. -func (k *Int32) From(t label.Label) int32 { return int32(t.Unpack64()) } - -// Int64 represents a key -type Int64 struct { - name string - description string -} - -// NewInt64 creates a new Key for int64 values. -func NewInt64(name, description string) *Int64 { - return &Int64{name: name, description: description} -} - -func (k *Int64) Name() string { return k.name } -func (k *Int64) Description() string { return k.description } - -func (k *Int64) Format(w io.Writer, buf []byte, l label.Label) { - w.Write(strconv.AppendInt(buf, k.From(l), 10)) -} - -// Of creates a new Label with this key and the supplied value. -func (k *Int64) Of(v int64) label.Label { return label.Of64(k, uint64(v)) } - -// Get can be used to get a label for the key from a label.Map. -func (k *Int64) Get(lm label.Map) int64 { - if t := lm.Find(k); t.Valid() { - return k.From(t) - } - return 0 -} - -// From can be used to get a value from a Label. -func (k *Int64) From(t label.Label) int64 { return int64(t.Unpack64()) } - -// UInt represents a key -type UInt struct { - name string - description string -} - -// NewUInt creates a new Key for uint values. -func NewUInt(name, description string) *UInt { - return &UInt{name: name, description: description} -} - -func (k *UInt) Name() string { return k.name } -func (k *UInt) Description() string { return k.description } - -func (k *UInt) Format(w io.Writer, buf []byte, l label.Label) { - w.Write(strconv.AppendUint(buf, uint64(k.From(l)), 10)) -} - -// Of creates a new Label with this key and the supplied value. -func (k *UInt) Of(v uint) label.Label { return label.Of64(k, uint64(v)) } - -// Get can be used to get a label for the key from a label.Map. -func (k *UInt) Get(lm label.Map) uint { - if t := lm.Find(k); t.Valid() { - return k.From(t) - } - return 0 -} - -// From can be used to get a value from a Label. -func (k *UInt) From(t label.Label) uint { return uint(t.Unpack64()) } - -// UInt8 represents a key -type UInt8 struct { - name string - description string -} - -// NewUInt8 creates a new Key for uint8 values. -func NewUInt8(name, description string) *UInt8 { - return &UInt8{name: name, description: description} -} - -func (k *UInt8) Name() string { return k.name } -func (k *UInt8) Description() string { return k.description } - -func (k *UInt8) Format(w io.Writer, buf []byte, l label.Label) { - w.Write(strconv.AppendUint(buf, uint64(k.From(l)), 10)) -} - -// Of creates a new Label with this key and the supplied value. -func (k *UInt8) Of(v uint8) label.Label { return label.Of64(k, uint64(v)) } - -// Get can be used to get a label for the key from a label.Map. -func (k *UInt8) Get(lm label.Map) uint8 { - if t := lm.Find(k); t.Valid() { - return k.From(t) - } - return 0 -} - -// From can be used to get a value from a Label. -func (k *UInt8) From(t label.Label) uint8 { return uint8(t.Unpack64()) } - -// UInt16 represents a key -type UInt16 struct { - name string - description string -} - -// NewUInt16 creates a new Key for uint16 values. -func NewUInt16(name, description string) *UInt16 { - return &UInt16{name: name, description: description} -} - -func (k *UInt16) Name() string { return k.name } -func (k *UInt16) Description() string { return k.description } - -func (k *UInt16) Format(w io.Writer, buf []byte, l label.Label) { - w.Write(strconv.AppendUint(buf, uint64(k.From(l)), 10)) -} - -// Of creates a new Label with this key and the supplied value. -func (k *UInt16) Of(v uint16) label.Label { return label.Of64(k, uint64(v)) } - -// Get can be used to get a label for the key from a label.Map. -func (k *UInt16) Get(lm label.Map) uint16 { - if t := lm.Find(k); t.Valid() { - return k.From(t) - } - return 0 -} - -// From can be used to get a value from a Label. -func (k *UInt16) From(t label.Label) uint16 { return uint16(t.Unpack64()) } - -// UInt32 represents a key -type UInt32 struct { - name string - description string -} - -// NewUInt32 creates a new Key for uint32 values. -func NewUInt32(name, description string) *UInt32 { - return &UInt32{name: name, description: description} -} - -func (k *UInt32) Name() string { return k.name } -func (k *UInt32) Description() string { return k.description } - -func (k *UInt32) Format(w io.Writer, buf []byte, l label.Label) { - w.Write(strconv.AppendUint(buf, uint64(k.From(l)), 10)) -} - -// Of creates a new Label with this key and the supplied value. -func (k *UInt32) Of(v uint32) label.Label { return label.Of64(k, uint64(v)) } - -// Get can be used to get a label for the key from a label.Map. -func (k *UInt32) Get(lm label.Map) uint32 { - if t := lm.Find(k); t.Valid() { - return k.From(t) - } - return 0 -} - -// From can be used to get a value from a Label. -func (k *UInt32) From(t label.Label) uint32 { return uint32(t.Unpack64()) } - -// UInt64 represents a key -type UInt64 struct { - name string - description string -} - -// NewUInt64 creates a new Key for uint64 values. -func NewUInt64(name, description string) *UInt64 { - return &UInt64{name: name, description: description} -} - -func (k *UInt64) Name() string { return k.name } -func (k *UInt64) Description() string { return k.description } - -func (k *UInt64) Format(w io.Writer, buf []byte, l label.Label) { - w.Write(strconv.AppendUint(buf, k.From(l), 10)) -} - -// Of creates a new Label with this key and the supplied value. -func (k *UInt64) Of(v uint64) label.Label { return label.Of64(k, v) } - -// Get can be used to get a label for the key from a label.Map. -func (k *UInt64) Get(lm label.Map) uint64 { - if t := lm.Find(k); t.Valid() { - return k.From(t) - } - return 0 -} - -// From can be used to get a value from a Label. -func (k *UInt64) From(t label.Label) uint64 { return t.Unpack64() } - -// Float32 represents a key -type Float32 struct { - name string - description string -} - -// NewFloat32 creates a new Key for float32 values. -func NewFloat32(name, description string) *Float32 { - return &Float32{name: name, description: description} -} - -func (k *Float32) Name() string { return k.name } -func (k *Float32) Description() string { return k.description } - -func (k *Float32) Format(w io.Writer, buf []byte, l label.Label) { - w.Write(strconv.AppendFloat(buf, float64(k.From(l)), 'E', -1, 32)) -} - -// Of creates a new Label with this key and the supplied value. -func (k *Float32) Of(v float32) label.Label { - return label.Of64(k, uint64(math.Float32bits(v))) -} - -// Get can be used to get a label for the key from a label.Map. -func (k *Float32) Get(lm label.Map) float32 { - if t := lm.Find(k); t.Valid() { - return k.From(t) - } - return 0 -} - -// From can be used to get a value from a Label. -func (k *Float32) From(t label.Label) float32 { - return math.Float32frombits(uint32(t.Unpack64())) -} - -// Float64 represents a key -type Float64 struct { - name string - description string -} - -// NewFloat64 creates a new Key for int64 values. -func NewFloat64(name, description string) *Float64 { - return &Float64{name: name, description: description} -} - -func (k *Float64) Name() string { return k.name } -func (k *Float64) Description() string { return k.description } - -func (k *Float64) Format(w io.Writer, buf []byte, l label.Label) { - w.Write(strconv.AppendFloat(buf, k.From(l), 'E', -1, 64)) -} - -// Of creates a new Label with this key and the supplied value. -func (k *Float64) Of(v float64) label.Label { - return label.Of64(k, math.Float64bits(v)) -} - -// Get can be used to get a label for the key from a label.Map. -func (k *Float64) Get(lm label.Map) float64 { - if t := lm.Find(k); t.Valid() { - return k.From(t) - } - return 0 -} - -// From can be used to get a value from a Label. -func (k *Float64) From(t label.Label) float64 { - return math.Float64frombits(t.Unpack64()) -} - -// String represents a key -type String struct { - name string - description string -} - -// NewString creates a new Key for int64 values. -func NewString(name, description string) *String { - return &String{name: name, description: description} -} - -func (k *String) Name() string { return k.name } -func (k *String) Description() string { return k.description } - -func (k *String) Format(w io.Writer, buf []byte, l label.Label) { - w.Write(strconv.AppendQuote(buf, k.From(l))) -} - -// Of creates a new Label with this key and the supplied value. -func (k *String) Of(v string) label.Label { return label.OfString(k, v) } - -// Get can be used to get a label for the key from a label.Map. -func (k *String) Get(lm label.Map) string { - if t := lm.Find(k); t.Valid() { - return k.From(t) - } - return "" -} - -// From can be used to get a value from a Label. -func (k *String) From(t label.Label) string { return t.UnpackString() } - -// Boolean represents a key -type Boolean struct { - name string - description string -} - -// NewBoolean creates a new Key for bool values. -func NewBoolean(name, description string) *Boolean { - return &Boolean{name: name, description: description} -} - -func (k *Boolean) Name() string { return k.name } -func (k *Boolean) Description() string { return k.description } - -func (k *Boolean) Format(w io.Writer, buf []byte, l label.Label) { - w.Write(strconv.AppendBool(buf, k.From(l))) -} - -// Of creates a new Label with this key and the supplied value. -func (k *Boolean) Of(v bool) label.Label { - if v { - return label.Of64(k, 1) - } - return label.Of64(k, 0) -} - -// Get can be used to get a label for the key from a label.Map. -func (k *Boolean) Get(lm label.Map) bool { - if t := lm.Find(k); t.Valid() { - return k.From(t) - } - return false -} - -// From can be used to get a value from a Label. -func (k *Boolean) From(t label.Label) bool { return t.Unpack64() > 0 } - -// Error represents a key -type Error struct { - name string - description string -} - -// NewError creates a new Key for int64 values. -func NewError(name, description string) *Error { - return &Error{name: name, description: description} -} - -func (k *Error) Name() string { return k.name } -func (k *Error) Description() string { return k.description } - -func (k *Error) Format(w io.Writer, buf []byte, l label.Label) { - io.WriteString(w, k.From(l).Error()) -} - -// Of creates a new Label with this key and the supplied value. -func (k *Error) Of(v error) label.Label { return label.OfValue(k, v) } - -// Get can be used to get a label for the key from a label.Map. -func (k *Error) Get(lm label.Map) error { - if t := lm.Find(k); t.Valid() { - return k.From(t) - } - return nil -} - -// From can be used to get a value from a Label. -func (k *Error) From(t label.Label) error { - err, _ := t.UnpackValue().(error) - return err -} diff --git a/vendor/golang.org/x/tools/internal/event/keys/standard.go b/vendor/golang.org/x/tools/internal/event/keys/standard.go deleted file mode 100644 index 7e9586659..000000000 --- a/vendor/golang.org/x/tools/internal/event/keys/standard.go +++ /dev/null @@ -1,22 +0,0 @@ -// Copyright 2020 The Go Authors. All rights reserved. -// Use of this source code is governed by a BSD-style -// license that can be found in the LICENSE file. - -package keys - -var ( - // Msg is a key used to add message strings to label lists. - Msg = NewString("message", "a readable message") - // Label is a key used to indicate an event adds labels to the context. - Label = NewTag("label", "a label context marker") - // Start is used for things like traces that have a name. - Start = NewString("start", "span start") - // Metric is a key used to indicate an event records metrics. - End = NewTag("end", "a span end marker") - // Metric is a key used to indicate an event records metrics. - Detach = NewTag("detach", "a span detach marker") - // Err is a key used to add error values to label lists. - Err = NewError("error", "an error that occurred") - // Metric is a key used to indicate an event records metrics. - Metric = NewTag("metric", "a metric event marker") -) diff --git a/vendor/golang.org/x/tools/internal/event/label/label.go b/vendor/golang.org/x/tools/internal/event/label/label.go deleted file mode 100644 index 0f526e1f9..000000000 --- a/vendor/golang.org/x/tools/internal/event/label/label.go +++ /dev/null @@ -1,215 +0,0 @@ -// Copyright 2019 The Go Authors. All rights reserved. -// Use of this source code is governed by a BSD-style -// license that can be found in the LICENSE file. - -package label - -import ( - "fmt" - "io" - "reflect" - "unsafe" -) - -// Key is used as the identity of a Label. -// Keys are intended to be compared by pointer only, the name should be unique -// for communicating with external systems, but it is not required or enforced. -type Key interface { - // Name returns the key name. - Name() string - // Description returns a string that can be used to describe the value. - Description() string - - // Format is used in formatting to append the value of the label to the - // supplied buffer. - // The formatter may use the supplied buf as a scratch area to avoid - // allocations. - Format(w io.Writer, buf []byte, l Label) -} - -// Label holds a key and value pair. -// It is normally used when passing around lists of labels. -type Label struct { - key Key - packed uint64 - untyped interface{} -} - -// Map is the interface to a collection of Labels indexed by key. -type Map interface { - // Find returns the label that matches the supplied key. - Find(key Key) Label -} - -// List is the interface to something that provides an iterable -// list of labels. -// Iteration should start from 0 and continue until Valid returns false. -type List interface { - // Valid returns true if the index is within range for the list. - // It does not imply the label at that index will itself be valid. - Valid(index int) bool - // Label returns the label at the given index. - Label(index int) Label -} - -// list implements LabelList for a list of Labels. -type list struct { - labels []Label -} - -// filter wraps a LabelList filtering out specific labels. -type filter struct { - keys []Key - underlying List -} - -// listMap implements LabelMap for a simple list of labels. -type listMap struct { - labels []Label -} - -// mapChain implements LabelMap for a list of underlying LabelMap. -type mapChain struct { - maps []Map -} - -// OfValue creates a new label from the key and value. -// This method is for implementing new key types, label creation should -// normally be done with the Of method of the key. -func OfValue(k Key, value interface{}) Label { return Label{key: k, untyped: value} } - -// UnpackValue assumes the label was built using LabelOfValue and returns the value -// that was passed to that constructor. -// This method is for implementing new key types, for type safety normal -// access should be done with the From method of the key. -func (t Label) UnpackValue() interface{} { return t.untyped } - -// Of64 creates a new label from a key and a uint64. This is often -// used for non uint64 values that can be packed into a uint64. -// This method is for implementing new key types, label creation should -// normally be done with the Of method of the key. -func Of64(k Key, v uint64) Label { return Label{key: k, packed: v} } - -// Unpack64 assumes the label was built using LabelOf64 and returns the value that -// was passed to that constructor. -// This method is for implementing new key types, for type safety normal -// access should be done with the From method of the key. -func (t Label) Unpack64() uint64 { return t.packed } - -type stringptr unsafe.Pointer - -// OfString creates a new label from a key and a string. -// This method is for implementing new key types, label creation should -// normally be done with the Of method of the key. -func OfString(k Key, v string) Label { - hdr := (*reflect.StringHeader)(unsafe.Pointer(&v)) - return Label{ - key: k, - packed: uint64(hdr.Len), - untyped: stringptr(hdr.Data), - } -} - -// UnpackString assumes the label was built using LabelOfString and returns the -// value that was passed to that constructor. -// This method is for implementing new key types, for type safety normal -// access should be done with the From method of the key. -func (t Label) UnpackString() string { - var v string - hdr := (*reflect.StringHeader)(unsafe.Pointer(&v)) - hdr.Data = uintptr(t.untyped.(stringptr)) - hdr.Len = int(t.packed) - return v -} - -// Valid returns true if the Label is a valid one (it has a key). -func (t Label) Valid() bool { return t.key != nil } - -// Key returns the key of this Label. -func (t Label) Key() Key { return t.key } - -// Format is used for debug printing of labels. -func (t Label) Format(f fmt.State, r rune) { - if !t.Valid() { - io.WriteString(f, `nil`) - return - } - io.WriteString(f, t.Key().Name()) - io.WriteString(f, "=") - var buf [128]byte - t.Key().Format(f, buf[:0], t) -} - -func (l *list) Valid(index int) bool { - return index >= 0 && index < len(l.labels) -} - -func (l *list) Label(index int) Label { - return l.labels[index] -} - -func (f *filter) Valid(index int) bool { - return f.underlying.Valid(index) -} - -func (f *filter) Label(index int) Label { - l := f.underlying.Label(index) - for _, f := range f.keys { - if l.Key() == f { - return Label{} - } - } - return l -} - -func (lm listMap) Find(key Key) Label { - for _, l := range lm.labels { - if l.Key() == key { - return l - } - } - return Label{} -} - -func (c mapChain) Find(key Key) Label { - for _, src := range c.maps { - l := src.Find(key) - if l.Valid() { - return l - } - } - return Label{} -} - -var emptyList = &list{} - -func NewList(labels ...Label) List { - if len(labels) == 0 { - return emptyList - } - return &list{labels: labels} -} - -func Filter(l List, keys ...Key) List { - if len(keys) == 0 { - return l - } - return &filter{keys: keys, underlying: l} -} - -func NewMap(labels ...Label) Map { - return listMap{labels: labels} -} - -func MergeMaps(srcs ...Map) Map { - var nonNil []Map - for _, src := range srcs { - if src != nil { - nonNil = append(nonNil, src) - } - } - if len(nonNil) == 1 { - return nonNil[0] - } - return mapChain{maps: nonNil} -} diff --git a/vendor/golang.org/x/tools/internal/gocommand/invoke.go b/vendor/golang.org/x/tools/internal/gocommand/invoke.go deleted file mode 100644 index f75336834..000000000 --- a/vendor/golang.org/x/tools/internal/gocommand/invoke.go +++ /dev/null @@ -1,281 +0,0 @@ -// Copyright 2020 The Go Authors. All rights reserved. -// Use of this source code is governed by a BSD-style -// license that can be found in the LICENSE file. - -// Package gocommand is a helper for calling the go command. -package gocommand - -import ( - "bytes" - "context" - "fmt" - "io" - "os" - "regexp" - "strconv" - "strings" - "sync" - "time" - - exec "golang.org/x/sys/execabs" - - "golang.org/x/tools/internal/event" -) - -// An Runner will run go command invocations and serialize -// them if it sees a concurrency error. -type Runner struct { - // once guards the runner initialization. - once sync.Once - - // inFlight tracks available workers. - inFlight chan struct{} - - // serialized guards the ability to run a go command serially, - // to avoid deadlocks when claiming workers. - serialized chan struct{} -} - -const maxInFlight = 10 - -func (runner *Runner) initialize() { - runner.once.Do(func() { - runner.inFlight = make(chan struct{}, maxInFlight) - runner.serialized = make(chan struct{}, 1) - }) -} - -// 1.13: go: updates to go.mod needed, but contents have changed -// 1.14: go: updating go.mod: existing contents have changed since last read -var modConcurrencyError = regexp.MustCompile(`go:.*go.mod.*contents have changed`) - -// Run is a convenience wrapper around RunRaw. -// It returns only stdout and a "friendly" error. -func (runner *Runner) Run(ctx context.Context, inv Invocation) (*bytes.Buffer, error) { - stdout, _, friendly, _ := runner.RunRaw(ctx, inv) - return stdout, friendly -} - -// RunPiped runs the invocation serially, always waiting for any concurrent -// invocations to complete first. -func (runner *Runner) RunPiped(ctx context.Context, inv Invocation, stdout, stderr io.Writer) error { - _, err := runner.runPiped(ctx, inv, stdout, stderr) - return err -} - -// RunRaw runs the invocation, serializing requests only if they fight over -// go.mod changes. -func (runner *Runner) RunRaw(ctx context.Context, inv Invocation) (*bytes.Buffer, *bytes.Buffer, error, error) { - // Make sure the runner is always initialized. - runner.initialize() - - // First, try to run the go command concurrently. - stdout, stderr, friendlyErr, err := runner.runConcurrent(ctx, inv) - - // If we encounter a load concurrency error, we need to retry serially. - if friendlyErr == nil || !modConcurrencyError.MatchString(friendlyErr.Error()) { - return stdout, stderr, friendlyErr, err - } - event.Error(ctx, "Load concurrency error, will retry serially", err) - - // Run serially by calling runPiped. - stdout.Reset() - stderr.Reset() - friendlyErr, err = runner.runPiped(ctx, inv, stdout, stderr) - return stdout, stderr, friendlyErr, err -} - -func (runner *Runner) runConcurrent(ctx context.Context, inv Invocation) (*bytes.Buffer, *bytes.Buffer, error, error) { - // Wait for 1 worker to become available. - select { - case <-ctx.Done(): - return nil, nil, nil, ctx.Err() - case runner.inFlight <- struct{}{}: - defer func() { <-runner.inFlight }() - } - - stdout, stderr := &bytes.Buffer{}, &bytes.Buffer{} - friendlyErr, err := inv.runWithFriendlyError(ctx, stdout, stderr) - return stdout, stderr, friendlyErr, err -} - -func (runner *Runner) runPiped(ctx context.Context, inv Invocation, stdout, stderr io.Writer) (error, error) { - // Make sure the runner is always initialized. - runner.initialize() - - // Acquire the serialization lock. This avoids deadlocks between two - // runPiped commands. - select { - case <-ctx.Done(): - return nil, ctx.Err() - case runner.serialized <- struct{}{}: - defer func() { <-runner.serialized }() - } - - // Wait for all in-progress go commands to return before proceeding, - // to avoid load concurrency errors. - for i := 0; i < maxInFlight; i++ { - select { - case <-ctx.Done(): - return nil, ctx.Err() - case runner.inFlight <- struct{}{}: - // Make sure we always "return" any workers we took. - defer func() { <-runner.inFlight }() - } - } - - return inv.runWithFriendlyError(ctx, stdout, stderr) -} - -// An Invocation represents a call to the go command. -type Invocation struct { - Verb string - Args []string - BuildFlags []string - - // If ModFlag is set, the go command is invoked with -mod=ModFlag. - ModFlag string - - // If ModFile is set, the go command is invoked with -modfile=ModFile. - ModFile string - - // If Overlay is set, the go command is invoked with -overlay=Overlay. - Overlay string - - // If CleanEnv is set, the invocation will run only with the environment - // in Env, not starting with os.Environ. - CleanEnv bool - Env []string - WorkingDir string - Logf func(format string, args ...interface{}) -} - -func (i *Invocation) runWithFriendlyError(ctx context.Context, stdout, stderr io.Writer) (friendlyError error, rawError error) { - rawError = i.run(ctx, stdout, stderr) - if rawError != nil { - friendlyError = rawError - // Check for 'go' executable not being found. - if ee, ok := rawError.(*exec.Error); ok && ee.Err == exec.ErrNotFound { - friendlyError = fmt.Errorf("go command required, not found: %v", ee) - } - if ctx.Err() != nil { - friendlyError = ctx.Err() - } - friendlyError = fmt.Errorf("err: %v: stderr: %s", friendlyError, stderr) - } - return -} - -func (i *Invocation) run(ctx context.Context, stdout, stderr io.Writer) error { - log := i.Logf - if log == nil { - log = func(string, ...interface{}) {} - } - - goArgs := []string{i.Verb} - - appendModFile := func() { - if i.ModFile != "" { - goArgs = append(goArgs, "-modfile="+i.ModFile) - } - } - appendModFlag := func() { - if i.ModFlag != "" { - goArgs = append(goArgs, "-mod="+i.ModFlag) - } - } - appendOverlayFlag := func() { - if i.Overlay != "" { - goArgs = append(goArgs, "-overlay="+i.Overlay) - } - } - - switch i.Verb { - case "env", "version": - goArgs = append(goArgs, i.Args...) - case "mod": - // mod needs the sub-verb before flags. - goArgs = append(goArgs, i.Args[0]) - appendModFile() - goArgs = append(goArgs, i.Args[1:]...) - case "get": - goArgs = append(goArgs, i.BuildFlags...) - appendModFile() - goArgs = append(goArgs, i.Args...) - - default: // notably list and build. - goArgs = append(goArgs, i.BuildFlags...) - appendModFile() - appendModFlag() - appendOverlayFlag() - goArgs = append(goArgs, i.Args...) - } - cmd := exec.Command("go", goArgs...) - cmd.Stdout = stdout - cmd.Stderr = stderr - // On darwin the cwd gets resolved to the real path, which breaks anything that - // expects the working directory to keep the original path, including the - // go command when dealing with modules. - // The Go stdlib has a special feature where if the cwd and the PWD are the - // same node then it trusts the PWD, so by setting it in the env for the child - // process we fix up all the paths returned by the go command. - if !i.CleanEnv { - cmd.Env = os.Environ() - } - cmd.Env = append(cmd.Env, i.Env...) - if i.WorkingDir != "" { - cmd.Env = append(cmd.Env, "PWD="+i.WorkingDir) - cmd.Dir = i.WorkingDir - } - defer func(start time.Time) { log("%s for %v", time.Since(start), cmdDebugStr(cmd)) }(time.Now()) - - return runCmdContext(ctx, cmd) -} - -// runCmdContext is like exec.CommandContext except it sends os.Interrupt -// before os.Kill. -func runCmdContext(ctx context.Context, cmd *exec.Cmd) error { - if err := cmd.Start(); err != nil { - return err - } - resChan := make(chan error, 1) - go func() { - resChan <- cmd.Wait() - }() - - select { - case err := <-resChan: - return err - case <-ctx.Done(): - } - // Cancelled. Interrupt and see if it ends voluntarily. - cmd.Process.Signal(os.Interrupt) - select { - case err := <-resChan: - return err - case <-time.After(time.Second): - } - // Didn't shut down in response to interrupt. Kill it hard. - cmd.Process.Kill() - return <-resChan -} - -func cmdDebugStr(cmd *exec.Cmd) string { - env := make(map[string]string) - for _, kv := range cmd.Env { - split := strings.SplitN(kv, "=", 2) - k, v := split[0], split[1] - env[k] = v - } - - var args []string - for _, arg := range cmd.Args { - quoted := strconv.Quote(arg) - if quoted[1:len(quoted)-1] != arg || strings.Contains(arg, " ") { - args = append(args, quoted) - } else { - args = append(args, arg) - } - } - return fmt.Sprintf("GOROOT=%v GOPATH=%v GO111MODULE=%v GOPROXY=%v PWD=%v %v", env["GOROOT"], env["GOPATH"], env["GO111MODULE"], env["GOPROXY"], env["PWD"], strings.Join(args, " ")) -} diff --git a/vendor/golang.org/x/tools/internal/gocommand/vendor.go b/vendor/golang.org/x/tools/internal/gocommand/vendor.go deleted file mode 100644 index 2d3d408c0..000000000 --- a/vendor/golang.org/x/tools/internal/gocommand/vendor.go +++ /dev/null @@ -1,109 +0,0 @@ -// Copyright 2020 The Go Authors. All rights reserved. -// Use of this source code is governed by a BSD-style -// license that can be found in the LICENSE file. - -package gocommand - -import ( - "bytes" - "context" - "fmt" - "os" - "path/filepath" - "regexp" - "strings" - "time" - - "golang.org/x/mod/semver" -) - -// ModuleJSON holds information about a module. -type ModuleJSON struct { - Path string // module path - Version string // module version - Versions []string // available module versions (with -versions) - Replace *ModuleJSON // replaced by this module - Time *time.Time // time version was created - Update *ModuleJSON // available update, if any (with -u) - Main bool // is this the main module? - Indirect bool // is this module only an indirect dependency of main module? - Dir string // directory holding files for this module, if any - GoMod string // path to go.mod file used when loading this module, if any - GoVersion string // go version used in module -} - -var modFlagRegexp = regexp.MustCompile(`-mod[ =](\w+)`) - -// VendorEnabled reports whether vendoring is enabled. It takes a *Runner to execute Go commands -// with the supplied context.Context and Invocation. The Invocation can contain pre-defined fields, -// of which only Verb and Args are modified to run the appropriate Go command. -// Inspired by setDefaultBuildMod in modload/init.go -func VendorEnabled(ctx context.Context, inv Invocation, r *Runner) (bool, *ModuleJSON, error) { - mainMod, go114, err := getMainModuleAnd114(ctx, inv, r) - if err != nil { - return false, nil, err - } - - // We check the GOFLAGS to see if there is anything overridden or not. - inv.Verb = "env" - inv.Args = []string{"GOFLAGS"} - stdout, err := r.Run(ctx, inv) - if err != nil { - return false, nil, err - } - goflags := string(bytes.TrimSpace(stdout.Bytes())) - matches := modFlagRegexp.FindStringSubmatch(goflags) - var modFlag string - if len(matches) != 0 { - modFlag = matches[1] - } - // Don't override an explicit '-mod=' argument. - if modFlag == "vendor" { - return true, mainMod, nil - } else if modFlag != "" { - return false, nil, nil - } - if mainMod == nil || !go114 { - return false, nil, nil - } - // Check 1.14's automatic vendor mode. - if fi, err := os.Stat(filepath.Join(mainMod.Dir, "vendor")); err == nil && fi.IsDir() { - if mainMod.GoVersion != "" && semver.Compare("v"+mainMod.GoVersion, "v1.14") >= 0 { - // The Go version is at least 1.14, and a vendor directory exists. - // Set -mod=vendor by default. - return true, mainMod, nil - } - } - return false, nil, nil -} - -// getMainModuleAnd114 gets one of the main modules' information and whether the -// go command in use is 1.14+. This is the information needed to figure out -// if vendoring should be enabled. -func getMainModuleAnd114(ctx context.Context, inv Invocation, r *Runner) (*ModuleJSON, bool, error) { - const format = `{{.Path}} -{{.Dir}} -{{.GoMod}} -{{.GoVersion}} -{{range context.ReleaseTags}}{{if eq . "go1.14"}}{{.}}{{end}}{{end}} -` - inv.Verb = "list" - inv.Args = []string{"-m", "-f", format} - stdout, err := r.Run(ctx, inv) - if err != nil { - return nil, false, err - } - - lines := strings.Split(stdout.String(), "\n") - if len(lines) < 5 { - return nil, false, fmt.Errorf("unexpected stdout: %q", stdout.String()) - } - mod := &ModuleJSON{ - Path: lines[0], - Dir: lines[1], - GoMod: lines[2], - GoVersion: lines[3], - Main: true, - } - return mod, lines[4] == "go1.14", nil -} diff --git a/vendor/golang.org/x/tools/internal/gocommand/version.go b/vendor/golang.org/x/tools/internal/gocommand/version.go deleted file mode 100644 index 713043680..000000000 --- a/vendor/golang.org/x/tools/internal/gocommand/version.go +++ /dev/null @@ -1,51 +0,0 @@ -// Copyright 2020 The Go Authors. All rights reserved. -// Use of this source code is governed by a BSD-style -// license that can be found in the LICENSE file. - -package gocommand - -import ( - "context" - "fmt" - "strings" -) - -// GoVersion checks the go version by running "go list" with modules off. -// It returns the X in Go 1.X. -func GoVersion(ctx context.Context, inv Invocation, r *Runner) (int, error) { - inv.Verb = "list" - inv.Args = []string{"-e", "-f", `{{context.ReleaseTags}}`, `--`, `unsafe`} - inv.Env = append(append([]string{}, inv.Env...), "GO111MODULE=off") - // Unset any unneeded flags, and remove them from BuildFlags, if they're - // present. - inv.ModFile = "" - inv.ModFlag = "" - var buildFlags []string - for _, flag := range inv.BuildFlags { - // Flags can be prefixed by one or two dashes. - f := strings.TrimPrefix(strings.TrimPrefix(flag, "-"), "-") - if strings.HasPrefix(f, "mod=") || strings.HasPrefix(f, "modfile=") { - continue - } - buildFlags = append(buildFlags, flag) - } - inv.BuildFlags = buildFlags - stdoutBytes, err := r.Run(ctx, inv) - if err != nil { - return 0, err - } - stdout := stdoutBytes.String() - if len(stdout) < 3 { - return 0, fmt.Errorf("bad ReleaseTags output: %q", stdout) - } - // Split up "[go1.1 go1.15]" - tags := strings.Fields(stdout[1 : len(stdout)-2]) - for i := len(tags) - 1; i >= 0; i-- { - var version int - if _, err := fmt.Sscanf(tags[i], "go1.%d", &version); err != nil { - continue - } - return version, nil - } - return 0, fmt.Errorf("no parseable ReleaseTags in %v", tags) -} diff --git a/vendor/golang.org/x/tools/internal/packagesinternal/packages.go b/vendor/golang.org/x/tools/internal/packagesinternal/packages.go deleted file mode 100644 index 9702094c5..000000000 --- a/vendor/golang.org/x/tools/internal/packagesinternal/packages.go +++ /dev/null @@ -1,28 +0,0 @@ -// Copyright 2020 The Go Authors. All rights reserved. -// Use of this source code is governed by a BSD-style -// license that can be found in the LICENSE file. - -// Package packagesinternal exposes internal-only fields from go/packages. -package packagesinternal - -import ( - "golang.org/x/tools/internal/gocommand" -) - -var GetForTest = func(p interface{}) string { return "" } -var GetDepsErrors = func(p interface{}) []*PackageError { return nil } - -type PackageError struct { - ImportStack []string // shortest path from package named on command line to this one - Pos string // position of error (if present, file:line:col) - Err string // the error itself -} - -var GetGoCmdRunner = func(config interface{}) *gocommand.Runner { return nil } - -var SetGoCmdRunner = func(config interface{}, runner *gocommand.Runner) {} - -var TypecheckCgo int - -var SetModFlag = func(config interface{}, value string) {} -var SetModFile = func(config interface{}, value string) {} diff --git a/vendor/golang.org/x/tools/internal/typeparams/common.go b/vendor/golang.org/x/tools/internal/typeparams/common.go deleted file mode 100644 index ab6b30b83..000000000 --- a/vendor/golang.org/x/tools/internal/typeparams/common.go +++ /dev/null @@ -1,180 +0,0 @@ -// Copyright 2021 The Go Authors. All rights reserved. -// Use of this source code is governed by a BSD-style -// license that can be found in the LICENSE file. - -// Package typeparams contains common utilities for writing tools that interact -// with generic Go code, as introduced with Go 1.18. -// -// Many of the types and functions in this package are proxies for the new APIs -// introduced in the standard library with Go 1.18. For example, the -// typeparams.Union type is an alias for go/types.Union, and the ForTypeSpec -// function returns the value of the go/ast.TypeSpec.TypeParams field. At Go -// versions older than 1.18 these helpers are implemented as stubs, allowing -// users of this package to write code that handles generic constructs inline, -// even if the Go version being used to compile does not support generics. -// -// Additionally, this package contains common utilities for working with the -// new generic constructs, to supplement the standard library APIs. Notably, -// the StructuralTerms API computes a minimal representation of the structural -// restrictions on a type parameter. In the future, this API may be available -// from go/types. -// -// See the example/README.md for a more detailed guide on how to update tools -// to support generics. -package typeparams - -import ( - "go/ast" - "go/token" - "go/types" -) - -// UnpackIndexExpr extracts data from AST nodes that represent index -// expressions. -// -// For an ast.IndexExpr, the resulting indices slice will contain exactly one -// index expression. For an ast.IndexListExpr (go1.18+), it may have a variable -// number of index expressions. -// -// For nodes that don't represent index expressions, the first return value of -// UnpackIndexExpr will be nil. -func UnpackIndexExpr(n ast.Node) (x ast.Expr, lbrack token.Pos, indices []ast.Expr, rbrack token.Pos) { - switch e := n.(type) { - case *ast.IndexExpr: - return e.X, e.Lbrack, []ast.Expr{e.Index}, e.Rbrack - case *IndexListExpr: - return e.X, e.Lbrack, e.Indices, e.Rbrack - } - return nil, token.NoPos, nil, token.NoPos -} - -// PackIndexExpr returns an *ast.IndexExpr or *ast.IndexListExpr, depending on -// the cardinality of indices. Calling PackIndexExpr with len(indices) == 0 -// will panic. -func PackIndexExpr(x ast.Expr, lbrack token.Pos, indices []ast.Expr, rbrack token.Pos) ast.Expr { - switch len(indices) { - case 0: - panic("empty indices") - case 1: - return &ast.IndexExpr{ - X: x, - Lbrack: lbrack, - Index: indices[0], - Rbrack: rbrack, - } - default: - return &IndexListExpr{ - X: x, - Lbrack: lbrack, - Indices: indices, - Rbrack: rbrack, - } - } -} - -// IsTypeParam reports whether t is a type parameter. -func IsTypeParam(t types.Type) bool { - _, ok := t.(*TypeParam) - return ok -} - -// OriginMethod returns the origin method associated with the method fn. -// For methods on a non-generic receiver base type, this is just -// fn. However, for methods with a generic receiver, OriginMethod returns the -// corresponding method in the method set of the origin type. -// -// As a special case, if fn is not a method (has no receiver), OriginMethod -// returns fn. -func OriginMethod(fn *types.Func) *types.Func { - recv := fn.Type().(*types.Signature).Recv() - if recv == nil { - - return fn - } - base := recv.Type() - p, isPtr := base.(*types.Pointer) - if isPtr { - base = p.Elem() - } - named, isNamed := base.(*types.Named) - if !isNamed { - // Receiver is a *types.Interface. - return fn - } - if ForNamed(named).Len() == 0 { - // Receiver base has no type parameters, so we can avoid the lookup below. - return fn - } - orig := NamedTypeOrigin(named) - gfn, _, _ := types.LookupFieldOrMethod(orig, true, fn.Pkg(), fn.Name()) - return gfn.(*types.Func) -} - -// GenericAssignableTo is a generalization of types.AssignableTo that -// implements the following rule for uninstantiated generic types: -// -// If V and T are generic named types, then V is considered assignable to T if, -// for every possible instantation of V[A_1, ..., A_N], the instantiation -// T[A_1, ..., A_N] is valid and V[A_1, ..., A_N] implements T[A_1, ..., A_N]. -// -// If T has structural constraints, they must be satisfied by V. -// -// For example, consider the following type declarations: -// -// type Interface[T any] interface { -// Accept(T) -// } -// -// type Container[T any] struct { -// Element T -// } -// -// func (c Container[T]) Accept(t T) { c.Element = t } -// -// In this case, GenericAssignableTo reports that instantiations of Container -// are assignable to the corresponding instantiation of Interface. -func GenericAssignableTo(ctxt *Context, V, T types.Type) bool { - // If V and T are not both named, or do not have matching non-empty type - // parameter lists, fall back on types.AssignableTo. - - VN, Vnamed := V.(*types.Named) - TN, Tnamed := T.(*types.Named) - if !Vnamed || !Tnamed { - return types.AssignableTo(V, T) - } - - vtparams := ForNamed(VN) - ttparams := ForNamed(TN) - if vtparams.Len() == 0 || vtparams.Len() != ttparams.Len() || NamedTypeArgs(VN).Len() != 0 || NamedTypeArgs(TN).Len() != 0 { - return types.AssignableTo(V, T) - } - - // V and T have the same (non-zero) number of type params. Instantiate both - // with the type parameters of V. This must always succeed for V, and will - // succeed for T if and only if the type set of each type parameter of V is a - // subset of the type set of the corresponding type parameter of T, meaning - // that every instantiation of V corresponds to a valid instantiation of T. - - // Minor optimization: ensure we share a context across the two - // instantiations below. - if ctxt == nil { - ctxt = NewContext() - } - - var targs []types.Type - for i := 0; i < vtparams.Len(); i++ { - targs = append(targs, vtparams.At(i)) - } - - vinst, err := Instantiate(ctxt, V, targs, true) - if err != nil { - panic("type parameters should satisfy their own constraints") - } - - tinst, err := Instantiate(ctxt, T, targs, true) - if err != nil { - return false - } - - return types.AssignableTo(vinst, tinst) -} diff --git a/vendor/golang.org/x/tools/internal/typeparams/enabled_go117.go b/vendor/golang.org/x/tools/internal/typeparams/enabled_go117.go deleted file mode 100644 index 18212390e..000000000 --- a/vendor/golang.org/x/tools/internal/typeparams/enabled_go117.go +++ /dev/null @@ -1,12 +0,0 @@ -// Copyright 2021 The Go Authors. All rights reserved. -// Use of this source code is governed by a BSD-style -// license that can be found in the LICENSE file. - -//go:build !go1.18 -// +build !go1.18 - -package typeparams - -// Enabled reports whether type parameters are enabled in the current build -// environment. -const Enabled = false diff --git a/vendor/golang.org/x/tools/internal/typeparams/enabled_go118.go b/vendor/golang.org/x/tools/internal/typeparams/enabled_go118.go deleted file mode 100644 index d67148823..000000000 --- a/vendor/golang.org/x/tools/internal/typeparams/enabled_go118.go +++ /dev/null @@ -1,15 +0,0 @@ -// Copyright 2021 The Go Authors. All rights reserved. -// Use of this source code is governed by a BSD-style -// license that can be found in the LICENSE file. - -//go:build go1.18 -// +build go1.18 - -package typeparams - -// Note: this constant is in a separate file as this is the only acceptable -// diff between the <1.18 API of this package and the 1.18 API. - -// Enabled reports whether type parameters are enabled in the current build -// environment. -const Enabled = true diff --git a/vendor/golang.org/x/tools/internal/typeparams/normalize.go b/vendor/golang.org/x/tools/internal/typeparams/normalize.go deleted file mode 100644 index 090f142a5..000000000 --- a/vendor/golang.org/x/tools/internal/typeparams/normalize.go +++ /dev/null @@ -1,216 +0,0 @@ -// Copyright 2021 The Go Authors. All rights reserved. -// Use of this source code is governed by a BSD-style -// license that can be found in the LICENSE file. - -package typeparams - -import ( - "errors" - "fmt" - "go/types" - "os" - "strings" -) - -//go:generate go run copytermlist.go - -const debug = false - -var ErrEmptyTypeSet = errors.New("empty type set") - -// StructuralTerms returns a slice of terms representing the normalized -// structural type restrictions of a type parameter, if any. -// -// Structural type restrictions of a type parameter are created via -// non-interface types embedded in its constraint interface (directly, or via a -// chain of interface embeddings). For example, in the declaration -// type T[P interface{~int; m()}] int -// the structural restriction of the type parameter P is ~int. -// -// With interface embedding and unions, the specification of structural type -// restrictions may be arbitrarily complex. For example, consider the -// following: -// -// type A interface{ ~string|~[]byte } -// -// type B interface{ int|string } -// -// type C interface { ~string|~int } -// -// type T[P interface{ A|B; C }] int -// -// In this example, the structural type restriction of P is ~string|int: A|B -// expands to ~string|~[]byte|int|string, which reduces to ~string|~[]byte|int, -// which when intersected with C (~string|~int) yields ~string|int. -// -// StructuralTerms computes these expansions and reductions, producing a -// "normalized" form of the embeddings. A structural restriction is normalized -// if it is a single union containing no interface terms, and is minimal in the -// sense that removing any term changes the set of types satisfying the -// constraint. It is left as a proof for the reader that, modulo sorting, there -// is exactly one such normalized form. -// -// Because the minimal representation always takes this form, StructuralTerms -// returns a slice of tilde terms corresponding to the terms of the union in -// the normalized structural restriction. An error is returned if the -// constraint interface is invalid, exceeds complexity bounds, or has an empty -// type set. In the latter case, StructuralTerms returns ErrEmptyTypeSet. -// -// StructuralTerms makes no guarantees about the order of terms, except that it -// is deterministic. -func StructuralTerms(tparam *TypeParam) ([]*Term, error) { - constraint := tparam.Constraint() - if constraint == nil { - return nil, fmt.Errorf("%s has nil constraint", tparam) - } - iface, _ := constraint.Underlying().(*types.Interface) - if iface == nil { - return nil, fmt.Errorf("constraint is %T, not *types.Interface", constraint.Underlying()) - } - return InterfaceTermSet(iface) -} - -// InterfaceTermSet computes the normalized terms for a constraint interface, -// returning an error if the term set cannot be computed or is empty. In the -// latter case, the error will be ErrEmptyTypeSet. -// -// See the documentation of StructuralTerms for more information on -// normalization. -func InterfaceTermSet(iface *types.Interface) ([]*Term, error) { - return computeTermSet(iface) -} - -// UnionTermSet computes the normalized terms for a union, returning an error -// if the term set cannot be computed or is empty. In the latter case, the -// error will be ErrEmptyTypeSet. -// -// See the documentation of StructuralTerms for more information on -// normalization. -func UnionTermSet(union *Union) ([]*Term, error) { - return computeTermSet(union) -} - -func computeTermSet(typ types.Type) ([]*Term, error) { - tset, err := computeTermSetInternal(typ, make(map[types.Type]*termSet), 0) - if err != nil { - return nil, err - } - if tset.terms.isEmpty() { - return nil, ErrEmptyTypeSet - } - if tset.terms.isAll() { - return nil, nil - } - var terms []*Term - for _, term := range tset.terms { - terms = append(terms, NewTerm(term.tilde, term.typ)) - } - return terms, nil -} - -// A termSet holds the normalized set of terms for a given type. -// -// The name termSet is intentionally distinct from 'type set': a type set is -// all types that implement a type (and includes method restrictions), whereas -// a term set just represents the structural restrictions on a type. -type termSet struct { - complete bool - terms termlist -} - -func indentf(depth int, format string, args ...interface{}) { - fmt.Fprintf(os.Stderr, strings.Repeat(".", depth)+format+"\n", args...) -} - -func computeTermSetInternal(t types.Type, seen map[types.Type]*termSet, depth int) (res *termSet, err error) { - if t == nil { - panic("nil type") - } - - if debug { - indentf(depth, "%s", t.String()) - defer func() { - if err != nil { - indentf(depth, "=> %s", err) - } else { - indentf(depth, "=> %s", res.terms.String()) - } - }() - } - - const maxTermCount = 100 - if tset, ok := seen[t]; ok { - if !tset.complete { - return nil, fmt.Errorf("cycle detected in the declaration of %s", t) - } - return tset, nil - } - - // Mark the current type as seen to avoid infinite recursion. - tset := new(termSet) - defer func() { - tset.complete = true - }() - seen[t] = tset - - switch u := t.Underlying().(type) { - case *types.Interface: - // The term set of an interface is the intersection of the term sets of its - // embedded types. - tset.terms = allTermlist - for i := 0; i < u.NumEmbeddeds(); i++ { - embedded := u.EmbeddedType(i) - if _, ok := embedded.Underlying().(*TypeParam); ok { - return nil, fmt.Errorf("invalid embedded type %T", embedded) - } - tset2, err := computeTermSetInternal(embedded, seen, depth+1) - if err != nil { - return nil, err - } - tset.terms = tset.terms.intersect(tset2.terms) - } - case *Union: - // The term set of a union is the union of term sets of its terms. - tset.terms = nil - for i := 0; i < u.Len(); i++ { - t := u.Term(i) - var terms termlist - switch t.Type().Underlying().(type) { - case *types.Interface: - tset2, err := computeTermSetInternal(t.Type(), seen, depth+1) - if err != nil { - return nil, err - } - terms = tset2.terms - case *TypeParam, *Union: - // A stand-alone type parameter or union is not permitted as union - // term. - return nil, fmt.Errorf("invalid union term %T", t) - default: - if t.Type() == types.Typ[types.Invalid] { - continue - } - terms = termlist{{t.Tilde(), t.Type()}} - } - tset.terms = tset.terms.union(terms) - if len(tset.terms) > maxTermCount { - return nil, fmt.Errorf("exceeded max term count %d", maxTermCount) - } - } - case *TypeParam: - panic("unreachable") - default: - // For all other types, the term set is just a single non-tilde term - // holding the type itself. - if u != types.Typ[types.Invalid] { - tset.terms = termlist{{false, t}} - } - } - return tset, nil -} - -// under is a facade for the go/types internal function of the same name. It is -// used by typeterm.go. -func under(t types.Type) types.Type { - return t.Underlying() -} diff --git a/vendor/golang.org/x/tools/internal/typeparams/termlist.go b/vendor/golang.org/x/tools/internal/typeparams/termlist.go deleted file mode 100644 index 10857d504..000000000 --- a/vendor/golang.org/x/tools/internal/typeparams/termlist.go +++ /dev/null @@ -1,172 +0,0 @@ -// Copyright 2021 The Go Authors. All rights reserved. -// Use of this source code is governed by a BSD-style -// license that can be found in the LICENSE file. - -// Code generated by copytermlist.go DO NOT EDIT. - -package typeparams - -import ( - "bytes" - "go/types" -) - -// A termlist represents the type set represented by the union -// t1 ∪ y2 ∪ ... tn of the type sets of the terms t1 to tn. -// A termlist is in normal form if all terms are disjoint. -// termlist operations don't require the operands to be in -// normal form. -type termlist []*term - -// allTermlist represents the set of all types. -// It is in normal form. -var allTermlist = termlist{new(term)} - -// String prints the termlist exactly (without normalization). -func (xl termlist) String() string { - if len(xl) == 0 { - return "∅" - } - var buf bytes.Buffer - for i, x := range xl { - if i > 0 { - buf.WriteString(" ∪ ") - } - buf.WriteString(x.String()) - } - return buf.String() -} - -// isEmpty reports whether the termlist xl represents the empty set of types. -func (xl termlist) isEmpty() bool { - // If there's a non-nil term, the entire list is not empty. - // If the termlist is in normal form, this requires at most - // one iteration. - for _, x := range xl { - if x != nil { - return false - } - } - return true -} - -// isAll reports whether the termlist xl represents the set of all types. -func (xl termlist) isAll() bool { - // If there's a 𝓤 term, the entire list is 𝓤. - // If the termlist is in normal form, this requires at most - // one iteration. - for _, x := range xl { - if x != nil && x.typ == nil { - return true - } - } - return false -} - -// norm returns the normal form of xl. -func (xl termlist) norm() termlist { - // Quadratic algorithm, but good enough for now. - // TODO(gri) fix asymptotic performance - used := make([]bool, len(xl)) - var rl termlist - for i, xi := range xl { - if xi == nil || used[i] { - continue - } - for j := i + 1; j < len(xl); j++ { - xj := xl[j] - if xj == nil || used[j] { - continue - } - if u1, u2 := xi.union(xj); u2 == nil { - // If we encounter a 𝓤 term, the entire list is 𝓤. - // Exit early. - // (Note that this is not just an optimization; - // if we continue, we may end up with a 𝓤 term - // and other terms and the result would not be - // in normal form.) - if u1.typ == nil { - return allTermlist - } - xi = u1 - used[j] = true // xj is now unioned into xi - ignore it in future iterations - } - } - rl = append(rl, xi) - } - return rl -} - -// If the type set represented by xl is specified by a single (non-𝓤) term, -// structuralType returns that type. Otherwise it returns nil. -func (xl termlist) structuralType() types.Type { - if nl := xl.norm(); len(nl) == 1 { - return nl[0].typ // if nl.isAll() then typ is nil, which is ok - } - return nil -} - -// union returns the union xl ∪ yl. -func (xl termlist) union(yl termlist) termlist { - return append(xl, yl...).norm() -} - -// intersect returns the intersection xl ∩ yl. -func (xl termlist) intersect(yl termlist) termlist { - if xl.isEmpty() || yl.isEmpty() { - return nil - } - - // Quadratic algorithm, but good enough for now. - // TODO(gri) fix asymptotic performance - var rl termlist - for _, x := range xl { - for _, y := range yl { - if r := x.intersect(y); r != nil { - rl = append(rl, r) - } - } - } - return rl.norm() -} - -// equal reports whether xl and yl represent the same type set. -func (xl termlist) equal(yl termlist) bool { - // TODO(gri) this should be more efficient - return xl.subsetOf(yl) && yl.subsetOf(xl) -} - -// includes reports whether t ∈ xl. -func (xl termlist) includes(t types.Type) bool { - for _, x := range xl { - if x.includes(t) { - return true - } - } - return false -} - -// supersetOf reports whether y ⊆ xl. -func (xl termlist) supersetOf(y *term) bool { - for _, x := range xl { - if y.subsetOf(x) { - return true - } - } - return false -} - -// subsetOf reports whether xl ⊆ yl. -func (xl termlist) subsetOf(yl termlist) bool { - if yl.isEmpty() { - return xl.isEmpty() - } - - // each term x of xl must be a subset of yl - for _, x := range xl { - if !yl.supersetOf(x) { - return false // x is not a subset yl - } - } - return true -} diff --git a/vendor/golang.org/x/tools/internal/typeparams/typeparams_go117.go b/vendor/golang.org/x/tools/internal/typeparams/typeparams_go117.go deleted file mode 100644 index b4788978f..000000000 --- a/vendor/golang.org/x/tools/internal/typeparams/typeparams_go117.go +++ /dev/null @@ -1,197 +0,0 @@ -// Copyright 2021 The Go Authors. All rights reserved. -// Use of this source code is governed by a BSD-style -// license that can be found in the LICENSE file. - -//go:build !go1.18 -// +build !go1.18 - -package typeparams - -import ( - "go/ast" - "go/token" - "go/types" -) - -func unsupported() { - panic("type parameters are unsupported at this go version") -} - -// IndexListExpr is a placeholder type, as type parameters are not supported at -// this Go version. Its methods panic on use. -type IndexListExpr struct { - ast.Expr - X ast.Expr // expression - Lbrack token.Pos // position of "[" - Indices []ast.Expr // index expressions - Rbrack token.Pos // position of "]" -} - -// ForTypeSpec returns an empty field list, as type parameters on not supported -// at this Go version. -func ForTypeSpec(*ast.TypeSpec) *ast.FieldList { - return nil -} - -// ForFuncType returns an empty field list, as type parameters are not -// supported at this Go version. -func ForFuncType(*ast.FuncType) *ast.FieldList { - return nil -} - -// TypeParam is a placeholder type, as type parameters are not supported at -// this Go version. Its methods panic on use. -type TypeParam struct{ types.Type } - -func (*TypeParam) Index() int { unsupported(); return 0 } -func (*TypeParam) Constraint() types.Type { unsupported(); return nil } -func (*TypeParam) Obj() *types.TypeName { unsupported(); return nil } - -// TypeParamList is a placeholder for an empty type parameter list. -type TypeParamList struct{} - -func (*TypeParamList) Len() int { return 0 } -func (*TypeParamList) At(int) *TypeParam { unsupported(); return nil } - -// TypeList is a placeholder for an empty type list. -type TypeList struct{} - -func (*TypeList) Len() int { return 0 } -func (*TypeList) At(int) types.Type { unsupported(); return nil } - -// NewTypeParam is unsupported at this Go version, and panics. -func NewTypeParam(name *types.TypeName, constraint types.Type) *TypeParam { - unsupported() - return nil -} - -// SetTypeParamConstraint is unsupported at this Go version, and panics. -func SetTypeParamConstraint(tparam *TypeParam, constraint types.Type) { - unsupported() -} - -// NewSignatureType calls types.NewSignature, panicking if recvTypeParams or -// typeParams is non-empty. -func NewSignatureType(recv *types.Var, recvTypeParams, typeParams []*TypeParam, params, results *types.Tuple, variadic bool) *types.Signature { - if len(recvTypeParams) != 0 || len(typeParams) != 0 { - panic("signatures cannot have type parameters at this Go version") - } - return types.NewSignature(recv, params, results, variadic) -} - -// ForSignature returns an empty slice. -func ForSignature(*types.Signature) *TypeParamList { - return nil -} - -// RecvTypeParams returns a nil slice. -func RecvTypeParams(sig *types.Signature) *TypeParamList { - return nil -} - -// IsComparable returns false, as no interfaces are type-restricted at this Go -// version. -func IsComparable(*types.Interface) bool { - return false -} - -// IsMethodSet returns true, as no interfaces are type-restricted at this Go -// version. -func IsMethodSet(*types.Interface) bool { - return true -} - -// IsImplicit returns false, as no interfaces are implicit at this Go version. -func IsImplicit(*types.Interface) bool { - return false -} - -// MarkImplicit does nothing, because this Go version does not have implicit -// interfaces. -func MarkImplicit(*types.Interface) {} - -// ForNamed returns an empty type parameter list, as type parameters are not -// supported at this Go version. -func ForNamed(*types.Named) *TypeParamList { - return nil -} - -// SetForNamed panics if tparams is non-empty. -func SetForNamed(_ *types.Named, tparams []*TypeParam) { - if len(tparams) > 0 { - unsupported() - } -} - -// NamedTypeArgs returns nil. -func NamedTypeArgs(*types.Named) *TypeList { - return nil -} - -// NamedTypeOrigin is the identity method at this Go version. -func NamedTypeOrigin(named *types.Named) types.Type { - return named -} - -// Term holds information about a structural type restriction. -type Term struct { - tilde bool - typ types.Type -} - -func (m *Term) Tilde() bool { return m.tilde } -func (m *Term) Type() types.Type { return m.typ } -func (m *Term) String() string { - pre := "" - if m.tilde { - pre = "~" - } - return pre + m.typ.String() -} - -// NewTerm is unsupported at this Go version, and panics. -func NewTerm(tilde bool, typ types.Type) *Term { - return &Term{tilde, typ} -} - -// Union is a placeholder type, as type parameters are not supported at this Go -// version. Its methods panic on use. -type Union struct{ types.Type } - -func (*Union) Len() int { return 0 } -func (*Union) Term(i int) *Term { unsupported(); return nil } - -// NewUnion is unsupported at this Go version, and panics. -func NewUnion(terms []*Term) *Union { - unsupported() - return nil -} - -// InitInstanceInfo is a noop at this Go version. -func InitInstanceInfo(*types.Info) {} - -// Instance is a placeholder type, as type parameters are not supported at this -// Go version. -type Instance struct { - TypeArgs *TypeList - Type types.Type -} - -// GetInstances returns a nil map, as type parameters are not supported at this -// Go version. -func GetInstances(info *types.Info) map[*ast.Ident]Instance { return nil } - -// Context is a placeholder type, as type parameters are not supported at -// this Go version. -type Context struct{} - -// NewContext returns a placeholder Context instance. -func NewContext() *Context { - return &Context{} -} - -// Instantiate is unsupported on this Go version, and panics. -func Instantiate(ctxt *Context, typ types.Type, targs []types.Type, validate bool) (types.Type, error) { - unsupported() - return nil, nil -} diff --git a/vendor/golang.org/x/tools/internal/typeparams/typeparams_go118.go b/vendor/golang.org/x/tools/internal/typeparams/typeparams_go118.go deleted file mode 100644 index 114a36b86..000000000 --- a/vendor/golang.org/x/tools/internal/typeparams/typeparams_go118.go +++ /dev/null @@ -1,151 +0,0 @@ -// Copyright 2021 The Go Authors. All rights reserved. -// Use of this source code is governed by a BSD-style -// license that can be found in the LICENSE file. - -//go:build go1.18 -// +build go1.18 - -package typeparams - -import ( - "go/ast" - "go/types" -) - -// IndexListExpr is an alias for ast.IndexListExpr. -type IndexListExpr = ast.IndexListExpr - -// ForTypeSpec returns n.TypeParams. -func ForTypeSpec(n *ast.TypeSpec) *ast.FieldList { - if n == nil { - return nil - } - return n.TypeParams -} - -// ForFuncType returns n.TypeParams. -func ForFuncType(n *ast.FuncType) *ast.FieldList { - if n == nil { - return nil - } - return n.TypeParams -} - -// TypeParam is an alias for types.TypeParam -type TypeParam = types.TypeParam - -// TypeParamList is an alias for types.TypeParamList -type TypeParamList = types.TypeParamList - -// TypeList is an alias for types.TypeList -type TypeList = types.TypeList - -// NewTypeParam calls types.NewTypeParam. -func NewTypeParam(name *types.TypeName, constraint types.Type) *TypeParam { - return types.NewTypeParam(name, constraint) -} - -// SetTypeParamConstraint calls tparam.SetConstraint(constraint). -func SetTypeParamConstraint(tparam *TypeParam, constraint types.Type) { - tparam.SetConstraint(constraint) -} - -// NewSignatureType calls types.NewSignatureType. -func NewSignatureType(recv *types.Var, recvTypeParams, typeParams []*TypeParam, params, results *types.Tuple, variadic bool) *types.Signature { - return types.NewSignatureType(recv, recvTypeParams, typeParams, params, results, variadic) -} - -// ForSignature returns sig.TypeParams() -func ForSignature(sig *types.Signature) *TypeParamList { - return sig.TypeParams() -} - -// RecvTypeParams returns sig.RecvTypeParams(). -func RecvTypeParams(sig *types.Signature) *TypeParamList { - return sig.RecvTypeParams() -} - -// IsComparable calls iface.IsComparable(). -func IsComparable(iface *types.Interface) bool { - return iface.IsComparable() -} - -// IsMethodSet calls iface.IsMethodSet(). -func IsMethodSet(iface *types.Interface) bool { - return iface.IsMethodSet() -} - -// IsImplicit calls iface.IsImplicit(). -func IsImplicit(iface *types.Interface) bool { - return iface.IsImplicit() -} - -// MarkImplicit calls iface.MarkImplicit(). -func MarkImplicit(iface *types.Interface) { - iface.MarkImplicit() -} - -// ForNamed extracts the (possibly empty) type parameter object list from -// named. -func ForNamed(named *types.Named) *TypeParamList { - return named.TypeParams() -} - -// SetForNamed sets the type params tparams on n. Each tparam must be of -// dynamic type *types.TypeParam. -func SetForNamed(n *types.Named, tparams []*TypeParam) { - n.SetTypeParams(tparams) -} - -// NamedTypeArgs returns named.TypeArgs(). -func NamedTypeArgs(named *types.Named) *TypeList { - return named.TypeArgs() -} - -// NamedTypeOrigin returns named.Orig(). -func NamedTypeOrigin(named *types.Named) types.Type { - return named.Origin() -} - -// Term is an alias for types.Term. -type Term = types.Term - -// NewTerm calls types.NewTerm. -func NewTerm(tilde bool, typ types.Type) *Term { - return types.NewTerm(tilde, typ) -} - -// Union is an alias for types.Union -type Union = types.Union - -// NewUnion calls types.NewUnion. -func NewUnion(terms []*Term) *Union { - return types.NewUnion(terms) -} - -// InitInstanceInfo initializes info to record information about type and -// function instances. -func InitInstanceInfo(info *types.Info) { - info.Instances = make(map[*ast.Ident]types.Instance) -} - -// Instance is an alias for types.Instance. -type Instance = types.Instance - -// GetInstances returns info.Instances. -func GetInstances(info *types.Info) map[*ast.Ident]Instance { - return info.Instances -} - -// Context is an alias for types.Context. -type Context = types.Context - -// NewContext calls types.NewContext. -func NewContext() *Context { - return types.NewContext() -} - -// Instantiate calls types.Instantiate. -func Instantiate(ctxt *Context, typ types.Type, targs []types.Type, validate bool) (types.Type, error) { - return types.Instantiate(ctxt, typ, targs, validate) -} diff --git a/vendor/golang.org/x/tools/internal/typeparams/typeterm.go b/vendor/golang.org/x/tools/internal/typeparams/typeterm.go deleted file mode 100644 index 7ddee28d9..000000000 --- a/vendor/golang.org/x/tools/internal/typeparams/typeterm.go +++ /dev/null @@ -1,170 +0,0 @@ -// Copyright 2021 The Go Authors. All rights reserved. -// Use of this source code is governed by a BSD-style -// license that can be found in the LICENSE file. - -// Code generated by copytermlist.go DO NOT EDIT. - -package typeparams - -import "go/types" - -// A term describes elementary type sets: -// -// ∅: (*term)(nil) == ∅ // set of no types (empty set) -// 𝓤: &term{} == 𝓤 // set of all types (𝓤niverse) -// T: &term{false, T} == {T} // set of type T -// ~t: &term{true, t} == {t' | under(t') == t} // set of types with underlying type t -// -type term struct { - tilde bool // valid if typ != nil - typ types.Type -} - -func (x *term) String() string { - switch { - case x == nil: - return "∅" - case x.typ == nil: - return "𝓤" - case x.tilde: - return "~" + x.typ.String() - default: - return x.typ.String() - } -} - -// equal reports whether x and y represent the same type set. -func (x *term) equal(y *term) bool { - // easy cases - switch { - case x == nil || y == nil: - return x == y - case x.typ == nil || y.typ == nil: - return x.typ == y.typ - } - // ∅ ⊂ x, y ⊂ 𝓤 - - return x.tilde == y.tilde && types.Identical(x.typ, y.typ) -} - -// union returns the union x ∪ y: zero, one, or two non-nil terms. -func (x *term) union(y *term) (_, _ *term) { - // easy cases - switch { - case x == nil && y == nil: - return nil, nil // ∅ ∪ ∅ == ∅ - case x == nil: - return y, nil // ∅ ∪ y == y - case y == nil: - return x, nil // x ∪ ∅ == x - case x.typ == nil: - return x, nil // 𝓤 ∪ y == 𝓤 - case y.typ == nil: - return y, nil // x ∪ 𝓤 == 𝓤 - } - // ∅ ⊂ x, y ⊂ 𝓤 - - if x.disjoint(y) { - return x, y // x ∪ y == (x, y) if x ∩ y == ∅ - } - // x.typ == y.typ - - // ~t ∪ ~t == ~t - // ~t ∪ T == ~t - // T ∪ ~t == ~t - // T ∪ T == T - if x.tilde || !y.tilde { - return x, nil - } - return y, nil -} - -// intersect returns the intersection x ∩ y. -func (x *term) intersect(y *term) *term { - // easy cases - switch { - case x == nil || y == nil: - return nil // ∅ ∩ y == ∅ and ∩ ∅ == ∅ - case x.typ == nil: - return y // 𝓤 ∩ y == y - case y.typ == nil: - return x // x ∩ 𝓤 == x - } - // ∅ ⊂ x, y ⊂ 𝓤 - - if x.disjoint(y) { - return nil // x ∩ y == ∅ if x ∩ y == ∅ - } - // x.typ == y.typ - - // ~t ∩ ~t == ~t - // ~t ∩ T == T - // T ∩ ~t == T - // T ∩ T == T - if !x.tilde || y.tilde { - return x - } - return y -} - -// includes reports whether t ∈ x. -func (x *term) includes(t types.Type) bool { - // easy cases - switch { - case x == nil: - return false // t ∈ ∅ == false - case x.typ == nil: - return true // t ∈ 𝓤 == true - } - // ∅ ⊂ x ⊂ 𝓤 - - u := t - if x.tilde { - u = under(u) - } - return types.Identical(x.typ, u) -} - -// subsetOf reports whether x ⊆ y. -func (x *term) subsetOf(y *term) bool { - // easy cases - switch { - case x == nil: - return true // ∅ ⊆ y == true - case y == nil: - return false // x ⊆ ∅ == false since x != ∅ - case y.typ == nil: - return true // x ⊆ 𝓤 == true - case x.typ == nil: - return false // 𝓤 ⊆ y == false since y != 𝓤 - } - // ∅ ⊂ x, y ⊂ 𝓤 - - if x.disjoint(y) { - return false // x ⊆ y == false if x ∩ y == ∅ - } - // x.typ == y.typ - - // ~t ⊆ ~t == true - // ~t ⊆ T == false - // T ⊆ ~t == true - // T ⊆ T == true - return !x.tilde || y.tilde -} - -// disjoint reports whether x ∩ y == ∅. -// x.typ and y.typ must not be nil. -func (x *term) disjoint(y *term) bool { - if debug && (x.typ == nil || y.typ == nil) { - panic("invalid argument(s)") - } - ux := x.typ - if y.tilde { - ux = under(ux) - } - uy := y.typ - if x.tilde { - uy = under(uy) - } - return !types.Identical(ux, uy) -} diff --git a/vendor/golang.org/x/tools/internal/typesinternal/errorcode.go b/vendor/golang.org/x/tools/internal/typesinternal/errorcode.go deleted file mode 100644 index d38ee3c27..000000000 --- a/vendor/golang.org/x/tools/internal/typesinternal/errorcode.go +++ /dev/null @@ -1,1526 +0,0 @@ -// Copyright 2020 The Go Authors. All rights reserved. -// Use of this source code is governed by a BSD-style -// license that can be found in the LICENSE file. - -package typesinternal - -//go:generate stringer -type=ErrorCode - -type ErrorCode int - -// This file defines the error codes that can be produced during type-checking. -// Collectively, these codes provide an identifier that may be used to -// implement special handling for certain types of errors. -// -// Error codes should be fine-grained enough that the exact nature of the error -// can be easily determined, but coarse enough that they are not an -// implementation detail of the type checking algorithm. As a rule-of-thumb, -// errors should be considered equivalent if there is a theoretical refactoring -// of the type checker in which they are emitted in exactly one place. For -// example, the type checker emits different error messages for "too many -// arguments" and "too few arguments", but one can imagine an alternative type -// checker where this check instead just emits a single "wrong number of -// arguments", so these errors should have the same code. -// -// Error code names should be as brief as possible while retaining accuracy and -// distinctiveness. In most cases names should start with an adjective -// describing the nature of the error (e.g. "invalid", "unused", "misplaced"), -// and end with a noun identifying the relevant language object. For example, -// "DuplicateDecl" or "InvalidSliceExpr". For brevity, naming follows the -// convention that "bad" implies a problem with syntax, and "invalid" implies a -// problem with types. - -const ( - _ ErrorCode = iota - - // Test is reserved for errors that only apply while in self-test mode. - Test - - /* package names */ - - // BlankPkgName occurs when a package name is the blank identifier "_". - // - // Per the spec: - // "The PackageName must not be the blank identifier." - BlankPkgName - - // MismatchedPkgName occurs when a file's package name doesn't match the - // package name already established by other files. - MismatchedPkgName - - // InvalidPkgUse occurs when a package identifier is used outside of a - // selector expression. - // - // Example: - // import "fmt" - // - // var _ = fmt - InvalidPkgUse - - /* imports */ - - // BadImportPath occurs when an import path is not valid. - BadImportPath - - // BrokenImport occurs when importing a package fails. - // - // Example: - // import "amissingpackage" - BrokenImport - - // ImportCRenamed occurs when the special import "C" is renamed. "C" is a - // pseudo-package, and must not be renamed. - // - // Example: - // import _ "C" - ImportCRenamed - - // UnusedImport occurs when an import is unused. - // - // Example: - // import "fmt" - // - // func main() {} - UnusedImport - - /* initialization */ - - // InvalidInitCycle occurs when an invalid cycle is detected within the - // initialization graph. - // - // Example: - // var x int = f() - // - // func f() int { return x } - InvalidInitCycle - - /* decls */ - - // DuplicateDecl occurs when an identifier is declared multiple times. - // - // Example: - // var x = 1 - // var x = 2 - DuplicateDecl - - // InvalidDeclCycle occurs when a declaration cycle is not valid. - // - // Example: - // import "unsafe" - // - // type T struct { - // a [n]int - // } - // - // var n = unsafe.Sizeof(T{}) - InvalidDeclCycle - - // InvalidTypeCycle occurs when a cycle in type definitions results in a - // type that is not well-defined. - // - // Example: - // import "unsafe" - // - // type T [unsafe.Sizeof(T{})]int - InvalidTypeCycle - - /* decls > const */ - - // InvalidConstInit occurs when a const declaration has a non-constant - // initializer. - // - // Example: - // var x int - // const _ = x - InvalidConstInit - - // InvalidConstVal occurs when a const value cannot be converted to its - // target type. - // - // TODO(findleyr): this error code and example are not very clear. Consider - // removing it. - // - // Example: - // const _ = 1 << "hello" - InvalidConstVal - - // InvalidConstType occurs when the underlying type in a const declaration - // is not a valid constant type. - // - // Example: - // const c *int = 4 - InvalidConstType - - /* decls > var (+ other variable assignment codes) */ - - // UntypedNil occurs when the predeclared (untyped) value nil is used to - // initialize a variable declared without an explicit type. - // - // Example: - // var x = nil - UntypedNil - - // WrongAssignCount occurs when the number of values on the right-hand side - // of an assignment or or initialization expression does not match the number - // of variables on the left-hand side. - // - // Example: - // var x = 1, 2 - WrongAssignCount - - // UnassignableOperand occurs when the left-hand side of an assignment is - // not assignable. - // - // Example: - // func f() { - // const c = 1 - // c = 2 - // } - UnassignableOperand - - // NoNewVar occurs when a short variable declaration (':=') does not declare - // new variables. - // - // Example: - // func f() { - // x := 1 - // x := 2 - // } - NoNewVar - - // MultiValAssignOp occurs when an assignment operation (+=, *=, etc) does - // not have single-valued left-hand or right-hand side. - // - // Per the spec: - // "In assignment operations, both the left- and right-hand expression lists - // must contain exactly one single-valued expression" - // - // Example: - // func f() int { - // x, y := 1, 2 - // x, y += 1 - // return x + y - // } - MultiValAssignOp - - // InvalidIfaceAssign occurs when a value of type T is used as an - // interface, but T does not implement a method of the expected interface. - // - // Example: - // type I interface { - // f() - // } - // - // type T int - // - // var x I = T(1) - InvalidIfaceAssign - - // InvalidChanAssign occurs when a chan assignment is invalid. - // - // Per the spec, a value x is assignable to a channel type T if: - // "x is a bidirectional channel value, T is a channel type, x's type V and - // T have identical element types, and at least one of V or T is not a - // defined type." - // - // Example: - // type T1 chan int - // type T2 chan int - // - // var x T1 - // // Invalid assignment because both types are named - // var _ T2 = x - InvalidChanAssign - - // IncompatibleAssign occurs when the type of the right-hand side expression - // in an assignment cannot be assigned to the type of the variable being - // assigned. - // - // Example: - // var x []int - // var _ int = x - IncompatibleAssign - - // UnaddressableFieldAssign occurs when trying to assign to a struct field - // in a map value. - // - // Example: - // func f() { - // m := make(map[string]struct{i int}) - // m["foo"].i = 42 - // } - UnaddressableFieldAssign - - /* decls > type (+ other type expression codes) */ - - // NotAType occurs when the identifier used as the underlying type in a type - // declaration or the right-hand side of a type alias does not denote a type. - // - // Example: - // var S = 2 - // - // type T S - NotAType - - // InvalidArrayLen occurs when an array length is not a constant value. - // - // Example: - // var n = 3 - // var _ = [n]int{} - InvalidArrayLen - - // BlankIfaceMethod occurs when a method name is '_'. - // - // Per the spec: - // "The name of each explicitly specified method must be unique and not - // blank." - // - // Example: - // type T interface { - // _(int) - // } - BlankIfaceMethod - - // IncomparableMapKey occurs when a map key type does not support the == and - // != operators. - // - // Per the spec: - // "The comparison operators == and != must be fully defined for operands of - // the key type; thus the key type must not be a function, map, or slice." - // - // Example: - // var x map[T]int - // - // type T []int - IncomparableMapKey - - // InvalidIfaceEmbed occurs when a non-interface type is embedded in an - // interface. - // - // Example: - // type T struct {} - // - // func (T) m() - // - // type I interface { - // T - // } - InvalidIfaceEmbed - - // InvalidPtrEmbed occurs when an embedded field is of the pointer form *T, - // and T itself is itself a pointer, an unsafe.Pointer, or an interface. - // - // Per the spec: - // "An embedded field must be specified as a type name T or as a pointer to - // a non-interface type name *T, and T itself may not be a pointer type." - // - // Example: - // type T *int - // - // type S struct { - // *T - // } - InvalidPtrEmbed - - /* decls > func and method */ - - // BadRecv occurs when a method declaration does not have exactly one - // receiver parameter. - // - // Example: - // func () _() {} - BadRecv - - // InvalidRecv occurs when a receiver type expression is not of the form T - // or *T, or T is a pointer type. - // - // Example: - // type T struct {} - // - // func (**T) m() {} - InvalidRecv - - // DuplicateFieldAndMethod occurs when an identifier appears as both a field - // and method name. - // - // Example: - // type T struct { - // m int - // } - // - // func (T) m() {} - DuplicateFieldAndMethod - - // DuplicateMethod occurs when two methods on the same receiver type have - // the same name. - // - // Example: - // type T struct {} - // func (T) m() {} - // func (T) m(i int) int { return i } - DuplicateMethod - - /* decls > special */ - - // InvalidBlank occurs when a blank identifier is used as a value or type. - // - // Per the spec: - // "The blank identifier may appear as an operand only on the left-hand side - // of an assignment." - // - // Example: - // var x = _ - InvalidBlank - - // InvalidIota occurs when the predeclared identifier iota is used outside - // of a constant declaration. - // - // Example: - // var x = iota - InvalidIota - - // MissingInitBody occurs when an init function is missing its body. - // - // Example: - // func init() - MissingInitBody - - // InvalidInitSig occurs when an init function declares parameters or - // results. - // - // Example: - // func init() int { return 1 } - InvalidInitSig - - // InvalidInitDecl occurs when init is declared as anything other than a - // function. - // - // Example: - // var init = 1 - InvalidInitDecl - - // InvalidMainDecl occurs when main is declared as anything other than a - // function, in a main package. - InvalidMainDecl - - /* exprs */ - - // TooManyValues occurs when a function returns too many values for the - // expression context in which it is used. - // - // Example: - // func ReturnTwo() (int, int) { - // return 1, 2 - // } - // - // var x = ReturnTwo() - TooManyValues - - // NotAnExpr occurs when a type expression is used where a value expression - // is expected. - // - // Example: - // type T struct {} - // - // func f() { - // T - // } - NotAnExpr - - /* exprs > const */ - - // TruncatedFloat occurs when a float constant is truncated to an integer - // value. - // - // Example: - // var _ int = 98.6 - TruncatedFloat - - // NumericOverflow occurs when a numeric constant overflows its target type. - // - // Example: - // var x int8 = 1000 - NumericOverflow - - /* exprs > operation */ - - // UndefinedOp occurs when an operator is not defined for the type(s) used - // in an operation. - // - // Example: - // var c = "a" - "b" - UndefinedOp - - // MismatchedTypes occurs when operand types are incompatible in a binary - // operation. - // - // Example: - // var a = "hello" - // var b = 1 - // var c = a - b - MismatchedTypes - - // DivByZero occurs when a division operation is provable at compile - // time to be a division by zero. - // - // Example: - // const divisor = 0 - // var x int = 1/divisor - DivByZero - - // NonNumericIncDec occurs when an increment or decrement operator is - // applied to a non-numeric value. - // - // Example: - // func f() { - // var c = "c" - // c++ - // } - NonNumericIncDec - - /* exprs > ptr */ - - // UnaddressableOperand occurs when the & operator is applied to an - // unaddressable expression. - // - // Example: - // var x = &1 - UnaddressableOperand - - // InvalidIndirection occurs when a non-pointer value is indirected via the - // '*' operator. - // - // Example: - // var x int - // var y = *x - InvalidIndirection - - /* exprs > [] */ - - // NonIndexableOperand occurs when an index operation is applied to a value - // that cannot be indexed. - // - // Example: - // var x = 1 - // var y = x[1] - NonIndexableOperand - - // InvalidIndex occurs when an index argument is not of integer type, - // negative, or out-of-bounds. - // - // Example: - // var s = [...]int{1,2,3} - // var x = s[5] - // - // Example: - // var s = []int{1,2,3} - // var _ = s[-1] - // - // Example: - // var s = []int{1,2,3} - // var i string - // var _ = s[i] - InvalidIndex - - // SwappedSliceIndices occurs when constant indices in a slice expression - // are decreasing in value. - // - // Example: - // var _ = []int{1,2,3}[2:1] - SwappedSliceIndices - - /* operators > slice */ - - // NonSliceableOperand occurs when a slice operation is applied to a value - // whose type is not sliceable, or is unaddressable. - // - // Example: - // var x = [...]int{1, 2, 3}[:1] - // - // Example: - // var x = 1 - // var y = 1[:1] - NonSliceableOperand - - // InvalidSliceExpr occurs when a three-index slice expression (a[x:y:z]) is - // applied to a string. - // - // Example: - // var s = "hello" - // var x = s[1:2:3] - InvalidSliceExpr - - /* exprs > shift */ - - // InvalidShiftCount occurs when the right-hand side of a shift operation is - // either non-integer, negative, or too large. - // - // Example: - // var ( - // x string - // y int = 1 << x - // ) - InvalidShiftCount - - // InvalidShiftOperand occurs when the shifted operand is not an integer. - // - // Example: - // var s = "hello" - // var x = s << 2 - InvalidShiftOperand - - /* exprs > chan */ - - // InvalidReceive occurs when there is a channel receive from a value that - // is either not a channel, or is a send-only channel. - // - // Example: - // func f() { - // var x = 1 - // <-x - // } - InvalidReceive - - // InvalidSend occurs when there is a channel send to a value that is not a - // channel, or is a receive-only channel. - // - // Example: - // func f() { - // var x = 1 - // x <- "hello!" - // } - InvalidSend - - /* exprs > literal */ - - // DuplicateLitKey occurs when an index is duplicated in a slice, array, or - // map literal. - // - // Example: - // var _ = []int{0:1, 0:2} - // - // Example: - // var _ = map[string]int{"a": 1, "a": 2} - DuplicateLitKey - - // MissingLitKey occurs when a map literal is missing a key expression. - // - // Example: - // var _ = map[string]int{1} - MissingLitKey - - // InvalidLitIndex occurs when the key in a key-value element of a slice or - // array literal is not an integer constant. - // - // Example: - // var i = 0 - // var x = []string{i: "world"} - InvalidLitIndex - - // OversizeArrayLit occurs when an array literal exceeds its length. - // - // Example: - // var _ = [2]int{1,2,3} - OversizeArrayLit - - // MixedStructLit occurs when a struct literal contains a mix of positional - // and named elements. - // - // Example: - // var _ = struct{i, j int}{i: 1, 2} - MixedStructLit - - // InvalidStructLit occurs when a positional struct literal has an incorrect - // number of values. - // - // Example: - // var _ = struct{i, j int}{1,2,3} - InvalidStructLit - - // MissingLitField occurs when a struct literal refers to a field that does - // not exist on the struct type. - // - // Example: - // var _ = struct{i int}{j: 2} - MissingLitField - - // DuplicateLitField occurs when a struct literal contains duplicated - // fields. - // - // Example: - // var _ = struct{i int}{i: 1, i: 2} - DuplicateLitField - - // UnexportedLitField occurs when a positional struct literal implicitly - // assigns an unexported field of an imported type. - UnexportedLitField - - // InvalidLitField occurs when a field name is not a valid identifier. - // - // Example: - // var _ = struct{i int}{1: 1} - InvalidLitField - - // UntypedLit occurs when a composite literal omits a required type - // identifier. - // - // Example: - // type outer struct{ - // inner struct { i int } - // } - // - // var _ = outer{inner: {1}} - UntypedLit - - // InvalidLit occurs when a composite literal expression does not match its - // type. - // - // Example: - // type P *struct{ - // x int - // } - // var _ = P {} - InvalidLit - - /* exprs > selector */ - - // AmbiguousSelector occurs when a selector is ambiguous. - // - // Example: - // type E1 struct { i int } - // type E2 struct { i int } - // type T struct { E1; E2 } - // - // var x T - // var _ = x.i - AmbiguousSelector - - // UndeclaredImportedName occurs when a package-qualified identifier is - // undeclared by the imported package. - // - // Example: - // import "go/types" - // - // var _ = types.NotAnActualIdentifier - UndeclaredImportedName - - // UnexportedName occurs when a selector refers to an unexported identifier - // of an imported package. - // - // Example: - // import "reflect" - // - // type _ reflect.flag - UnexportedName - - // UndeclaredName occurs when an identifier is not declared in the current - // scope. - // - // Example: - // var x T - UndeclaredName - - // MissingFieldOrMethod occurs when a selector references a field or method - // that does not exist. - // - // Example: - // type T struct {} - // - // var x = T{}.f - MissingFieldOrMethod - - /* exprs > ... */ - - // BadDotDotDotSyntax occurs when a "..." occurs in a context where it is - // not valid. - // - // Example: - // var _ = map[int][...]int{0: {}} - BadDotDotDotSyntax - - // NonVariadicDotDotDot occurs when a "..." is used on the final argument to - // a non-variadic function. - // - // Example: - // func printArgs(s []string) { - // for _, a := range s { - // println(a) - // } - // } - // - // func f() { - // s := []string{"a", "b", "c"} - // printArgs(s...) - // } - NonVariadicDotDotDot - - // MisplacedDotDotDot occurs when a "..." is used somewhere other than the - // final argument to a function call. - // - // Example: - // func printArgs(args ...int) { - // for _, a := range args { - // println(a) - // } - // } - // - // func f() { - // a := []int{1,2,3} - // printArgs(0, a...) - // } - MisplacedDotDotDot - - // InvalidDotDotDotOperand occurs when a "..." operator is applied to a - // single-valued operand. - // - // Example: - // func printArgs(args ...int) { - // for _, a := range args { - // println(a) - // } - // } - // - // func f() { - // a := 1 - // printArgs(a...) - // } - // - // Example: - // func args() (int, int) { - // return 1, 2 - // } - // - // func printArgs(args ...int) { - // for _, a := range args { - // println(a) - // } - // } - // - // func g() { - // printArgs(args()...) - // } - InvalidDotDotDotOperand - - // InvalidDotDotDot occurs when a "..." is used in a non-variadic built-in - // function. - // - // Example: - // var s = []int{1, 2, 3} - // var l = len(s...) - InvalidDotDotDot - - /* exprs > built-in */ - - // UncalledBuiltin occurs when a built-in function is used as a - // function-valued expression, instead of being called. - // - // Per the spec: - // "The built-in functions do not have standard Go types, so they can only - // appear in call expressions; they cannot be used as function values." - // - // Example: - // var _ = copy - UncalledBuiltin - - // InvalidAppend occurs when append is called with a first argument that is - // not a slice. - // - // Example: - // var _ = append(1, 2) - InvalidAppend - - // InvalidCap occurs when an argument to the cap built-in function is not of - // supported type. - // - // See https://golang.org/ref/spec#Lengthand_capacity for information on - // which underlying types are supported as arguments to cap and len. - // - // Example: - // var s = 2 - // var x = cap(s) - InvalidCap - - // InvalidClose occurs when close(...) is called with an argument that is - // not of channel type, or that is a receive-only channel. - // - // Example: - // func f() { - // var x int - // close(x) - // } - InvalidClose - - // InvalidCopy occurs when the arguments are not of slice type or do not - // have compatible type. - // - // See https://golang.org/ref/spec#Appendingand_copying_slices for more - // information on the type requirements for the copy built-in. - // - // Example: - // func f() { - // var x []int - // y := []int64{1,2,3} - // copy(x, y) - // } - InvalidCopy - - // InvalidComplex occurs when the complex built-in function is called with - // arguments with incompatible types. - // - // Example: - // var _ = complex(float32(1), float64(2)) - InvalidComplex - - // InvalidDelete occurs when the delete built-in function is called with a - // first argument that is not a map. - // - // Example: - // func f() { - // m := "hello" - // delete(m, "e") - // } - InvalidDelete - - // InvalidImag occurs when the imag built-in function is called with an - // argument that does not have complex type. - // - // Example: - // var _ = imag(int(1)) - InvalidImag - - // InvalidLen occurs when an argument to the len built-in function is not of - // supported type. - // - // See https://golang.org/ref/spec#Lengthand_capacity for information on - // which underlying types are supported as arguments to cap and len. - // - // Example: - // var s = 2 - // var x = len(s) - InvalidLen - - // SwappedMakeArgs occurs when make is called with three arguments, and its - // length argument is larger than its capacity argument. - // - // Example: - // var x = make([]int, 3, 2) - SwappedMakeArgs - - // InvalidMake occurs when make is called with an unsupported type argument. - // - // See https://golang.org/ref/spec#Makingslices_maps_and_channels for - // information on the types that may be created using make. - // - // Example: - // var x = make(int) - InvalidMake - - // InvalidReal occurs when the real built-in function is called with an - // argument that does not have complex type. - // - // Example: - // var _ = real(int(1)) - InvalidReal - - /* exprs > assertion */ - - // InvalidAssert occurs when a type assertion is applied to a - // value that is not of interface type. - // - // Example: - // var x = 1 - // var _ = x.(float64) - InvalidAssert - - // ImpossibleAssert occurs for a type assertion x.(T) when the value x of - // interface cannot have dynamic type T, due to a missing or mismatching - // method on T. - // - // Example: - // type T int - // - // func (t *T) m() int { return int(*t) } - // - // type I interface { m() int } - // - // var x I - // var _ = x.(T) - ImpossibleAssert - - /* exprs > conversion */ - - // InvalidConversion occurs when the argument type cannot be converted to the - // target. - // - // See https://golang.org/ref/spec#Conversions for the rules of - // convertibility. - // - // Example: - // var x float64 - // var _ = string(x) - InvalidConversion - - // InvalidUntypedConversion occurs when an there is no valid implicit - // conversion from an untyped value satisfying the type constraints of the - // context in which it is used. - // - // Example: - // var _ = 1 + "" - InvalidUntypedConversion - - /* offsetof */ - - // BadOffsetofSyntax occurs when unsafe.Offsetof is called with an argument - // that is not a selector expression. - // - // Example: - // import "unsafe" - // - // var x int - // var _ = unsafe.Offsetof(x) - BadOffsetofSyntax - - // InvalidOffsetof occurs when unsafe.Offsetof is called with a method - // selector, rather than a field selector, or when the field is embedded via - // a pointer. - // - // Per the spec: - // - // "If f is an embedded field, it must be reachable without pointer - // indirections through fields of the struct. " - // - // Example: - // import "unsafe" - // - // type T struct { f int } - // type S struct { *T } - // var s S - // var _ = unsafe.Offsetof(s.f) - // - // Example: - // import "unsafe" - // - // type S struct{} - // - // func (S) m() {} - // - // var s S - // var _ = unsafe.Offsetof(s.m) - InvalidOffsetof - - /* control flow > scope */ - - // UnusedExpr occurs when a side-effect free expression is used as a - // statement. Such a statement has no effect. - // - // Example: - // func f(i int) { - // i*i - // } - UnusedExpr - - // UnusedVar occurs when a variable is declared but unused. - // - // Example: - // func f() { - // x := 1 - // } - UnusedVar - - // MissingReturn occurs when a function with results is missing a return - // statement. - // - // Example: - // func f() int {} - MissingReturn - - // WrongResultCount occurs when a return statement returns an incorrect - // number of values. - // - // Example: - // func ReturnOne() int { - // return 1, 2 - // } - WrongResultCount - - // OutOfScopeResult occurs when the name of a value implicitly returned by - // an empty return statement is shadowed in a nested scope. - // - // Example: - // func factor(n int) (i int) { - // for i := 2; i < n; i++ { - // if n%i == 0 { - // return - // } - // } - // return 0 - // } - OutOfScopeResult - - /* control flow > if */ - - // InvalidCond occurs when an if condition is not a boolean expression. - // - // Example: - // func checkReturn(i int) { - // if i { - // panic("non-zero return") - // } - // } - InvalidCond - - /* control flow > for */ - - // InvalidPostDecl occurs when there is a declaration in a for-loop post - // statement. - // - // Example: - // func f() { - // for i := 0; i < 10; j := 0 {} - // } - InvalidPostDecl - - // InvalidChanRange occurs when a send-only channel used in a range - // expression. - // - // Example: - // func sum(c chan<- int) { - // s := 0 - // for i := range c { - // s += i - // } - // } - InvalidChanRange - - // InvalidIterVar occurs when two iteration variables are used while ranging - // over a channel. - // - // Example: - // func f(c chan int) { - // for k, v := range c { - // println(k, v) - // } - // } - InvalidIterVar - - // InvalidRangeExpr occurs when the type of a range expression is not array, - // slice, string, map, or channel. - // - // Example: - // func f(i int) { - // for j := range i { - // println(j) - // } - // } - InvalidRangeExpr - - /* control flow > switch */ - - // MisplacedBreak occurs when a break statement is not within a for, switch, - // or select statement of the innermost function definition. - // - // Example: - // func f() { - // break - // } - MisplacedBreak - - // MisplacedContinue occurs when a continue statement is not within a for - // loop of the innermost function definition. - // - // Example: - // func sumeven(n int) int { - // proceed := func() { - // continue - // } - // sum := 0 - // for i := 1; i <= n; i++ { - // if i % 2 != 0 { - // proceed() - // } - // sum += i - // } - // return sum - // } - MisplacedContinue - - // MisplacedFallthrough occurs when a fallthrough statement is not within an - // expression switch. - // - // Example: - // func typename(i interface{}) string { - // switch i.(type) { - // case int64: - // fallthrough - // case int: - // return "int" - // } - // return "unsupported" - // } - MisplacedFallthrough - - // DuplicateCase occurs when a type or expression switch has duplicate - // cases. - // - // Example: - // func printInt(i int) { - // switch i { - // case 1: - // println("one") - // case 1: - // println("One") - // } - // } - DuplicateCase - - // DuplicateDefault occurs when a type or expression switch has multiple - // default clauses. - // - // Example: - // func printInt(i int) { - // switch i { - // case 1: - // println("one") - // default: - // println("One") - // default: - // println("1") - // } - // } - DuplicateDefault - - // BadTypeKeyword occurs when a .(type) expression is used anywhere other - // than a type switch. - // - // Example: - // type I interface { - // m() - // } - // var t I - // var _ = t.(type) - BadTypeKeyword - - // InvalidTypeSwitch occurs when .(type) is used on an expression that is - // not of interface type. - // - // Example: - // func f(i int) { - // switch x := i.(type) {} - // } - InvalidTypeSwitch - - // InvalidExprSwitch occurs when a switch expression is not comparable. - // - // Example: - // func _() { - // var a struct{ _ func() } - // switch a /* ERROR cannot switch on a */ { - // } - // } - InvalidExprSwitch - - /* control flow > select */ - - // InvalidSelectCase occurs when a select case is not a channel send or - // receive. - // - // Example: - // func checkChan(c <-chan int) bool { - // select { - // case c: - // return true - // default: - // return false - // } - // } - InvalidSelectCase - - /* control flow > labels and jumps */ - - // UndeclaredLabel occurs when an undeclared label is jumped to. - // - // Example: - // func f() { - // goto L - // } - UndeclaredLabel - - // DuplicateLabel occurs when a label is declared more than once. - // - // Example: - // func f() int { - // L: - // L: - // return 1 - // } - DuplicateLabel - - // MisplacedLabel occurs when a break or continue label is not on a for, - // switch, or select statement. - // - // Example: - // func f() { - // L: - // a := []int{1,2,3} - // for _, e := range a { - // if e > 10 { - // break L - // } - // println(a) - // } - // } - MisplacedLabel - - // UnusedLabel occurs when a label is declared but not used. - // - // Example: - // func f() { - // L: - // } - UnusedLabel - - // JumpOverDecl occurs when a label jumps over a variable declaration. - // - // Example: - // func f() int { - // goto L - // x := 2 - // L: - // x++ - // return x - // } - JumpOverDecl - - // JumpIntoBlock occurs when a forward jump goes to a label inside a nested - // block. - // - // Example: - // func f(x int) { - // goto L - // if x > 0 { - // L: - // print("inside block") - // } - // } - JumpIntoBlock - - /* control flow > calls */ - - // InvalidMethodExpr occurs when a pointer method is called but the argument - // is not addressable. - // - // Example: - // type T struct {} - // - // func (*T) m() int { return 1 } - // - // var _ = T.m(T{}) - InvalidMethodExpr - - // WrongArgCount occurs when too few or too many arguments are passed by a - // function call. - // - // Example: - // func f(i int) {} - // var x = f() - WrongArgCount - - // InvalidCall occurs when an expression is called that is not of function - // type. - // - // Example: - // var x = "x" - // var y = x() - InvalidCall - - /* control flow > suspended */ - - // UnusedResults occurs when a restricted expression-only built-in function - // is suspended via go or defer. Such a suspension discards the results of - // these side-effect free built-in functions, and therefore is ineffectual. - // - // Example: - // func f(a []int) int { - // defer len(a) - // return i - // } - UnusedResults - - // InvalidDefer occurs when a deferred expression is not a function call, - // for example if the expression is a type conversion. - // - // Example: - // func f(i int) int { - // defer int32(i) - // return i - // } - InvalidDefer - - // InvalidGo occurs when a go expression is not a function call, for example - // if the expression is a type conversion. - // - // Example: - // func f(i int) int { - // go int32(i) - // return i - // } - InvalidGo - - // All codes below were added in Go 1.17. - - /* decl */ - - // BadDecl occurs when a declaration has invalid syntax. - BadDecl - - // RepeatedDecl occurs when an identifier occurs more than once on the left - // hand side of a short variable declaration. - // - // Example: - // func _() { - // x, y, y := 1, 2, 3 - // } - RepeatedDecl - - /* unsafe */ - - // InvalidUnsafeAdd occurs when unsafe.Add is called with a - // length argument that is not of integer type. - // - // Example: - // import "unsafe" - // - // var p unsafe.Pointer - // var _ = unsafe.Add(p, float64(1)) - InvalidUnsafeAdd - - // InvalidUnsafeSlice occurs when unsafe.Slice is called with a - // pointer argument that is not of pointer type or a length argument - // that is not of integer type, negative, or out of bounds. - // - // Example: - // import "unsafe" - // - // var x int - // var _ = unsafe.Slice(x, 1) - // - // Example: - // import "unsafe" - // - // var x int - // var _ = unsafe.Slice(&x, float64(1)) - // - // Example: - // import "unsafe" - // - // var x int - // var _ = unsafe.Slice(&x, -1) - // - // Example: - // import "unsafe" - // - // var x int - // var _ = unsafe.Slice(&x, uint64(1) << 63) - InvalidUnsafeSlice - - // All codes below were added in Go 1.18. - - /* features */ - - // UnsupportedFeature occurs when a language feature is used that is not - // supported at this Go version. - UnsupportedFeature - - /* type params */ - - // NotAGenericType occurs when a non-generic type is used where a generic - // type is expected: in type or function instantiation. - // - // Example: - // type T int - // - // var _ T[int] - NotAGenericType - - // WrongTypeArgCount occurs when a type or function is instantiated with an - // incorrent number of type arguments, including when a generic type or - // function is used without instantiation. - // - // Errors inolving failed type inference are assigned other error codes. - // - // Example: - // type T[p any] int - // - // var _ T[int, string] - // - // Example: - // func f[T any]() {} - // - // var x = f - WrongTypeArgCount - - // CannotInferTypeArgs occurs when type or function type argument inference - // fails to infer all type arguments. - // - // Example: - // func f[T any]() {} - // - // func _() { - // f() - // } - // - // Example: - // type N[P, Q any] struct{} - // - // var _ N[int] - CannotInferTypeArgs - - // InvalidTypeArg occurs when a type argument does not satisfy its - // corresponding type parameter constraints. - // - // Example: - // type T[P ~int] struct{} - // - // var _ T[string] - InvalidTypeArg // arguments? InferenceFailed - - // InvalidInstanceCycle occurs when an invalid cycle is detected - // within the instantiation graph. - // - // Example: - // func f[T any]() { f[*T]() } - InvalidInstanceCycle - - // InvalidUnion occurs when an embedded union or approximation element is - // not valid. - // - // Example: - // type _ interface { - // ~int | interface{ m() } - // } - InvalidUnion - - // MisplacedConstraintIface occurs when a constraint-type interface is used - // outside of constraint position. - // - // Example: - // type I interface { ~int } - // - // var _ I - MisplacedConstraintIface - - // InvalidMethodTypeParams occurs when methods have type parameters. - // - // It cannot be encountered with an AST parsed using go/parser. - InvalidMethodTypeParams - - // MisplacedTypeParam occurs when a type parameter is used in a place where - // it is not permitted. - // - // Example: - // type T[P any] P - // - // Example: - // type T[P any] struct{ *P } - MisplacedTypeParam -) diff --git a/vendor/golang.org/x/tools/internal/typesinternal/errorcode_string.go b/vendor/golang.org/x/tools/internal/typesinternal/errorcode_string.go deleted file mode 100644 index de90e9515..000000000 --- a/vendor/golang.org/x/tools/internal/typesinternal/errorcode_string.go +++ /dev/null @@ -1,167 +0,0 @@ -// Code generated by "stringer -type=ErrorCode"; DO NOT EDIT. - -package typesinternal - -import "strconv" - -func _() { - // An "invalid array index" compiler error signifies that the constant values have changed. - // Re-run the stringer command to generate them again. - var x [1]struct{} - _ = x[Test-1] - _ = x[BlankPkgName-2] - _ = x[MismatchedPkgName-3] - _ = x[InvalidPkgUse-4] - _ = x[BadImportPath-5] - _ = x[BrokenImport-6] - _ = x[ImportCRenamed-7] - _ = x[UnusedImport-8] - _ = x[InvalidInitCycle-9] - _ = x[DuplicateDecl-10] - _ = x[InvalidDeclCycle-11] - _ = x[InvalidTypeCycle-12] - _ = x[InvalidConstInit-13] - _ = x[InvalidConstVal-14] - _ = x[InvalidConstType-15] - _ = x[UntypedNil-16] - _ = x[WrongAssignCount-17] - _ = x[UnassignableOperand-18] - _ = x[NoNewVar-19] - _ = x[MultiValAssignOp-20] - _ = x[InvalidIfaceAssign-21] - _ = x[InvalidChanAssign-22] - _ = x[IncompatibleAssign-23] - _ = x[UnaddressableFieldAssign-24] - _ = x[NotAType-25] - _ = x[InvalidArrayLen-26] - _ = x[BlankIfaceMethod-27] - _ = x[IncomparableMapKey-28] - _ = x[InvalidIfaceEmbed-29] - _ = x[InvalidPtrEmbed-30] - _ = x[BadRecv-31] - _ = x[InvalidRecv-32] - _ = x[DuplicateFieldAndMethod-33] - _ = x[DuplicateMethod-34] - _ = x[InvalidBlank-35] - _ = x[InvalidIota-36] - _ = x[MissingInitBody-37] - _ = x[InvalidInitSig-38] - _ = x[InvalidInitDecl-39] - _ = x[InvalidMainDecl-40] - _ = x[TooManyValues-41] - _ = x[NotAnExpr-42] - _ = x[TruncatedFloat-43] - _ = x[NumericOverflow-44] - _ = x[UndefinedOp-45] - _ = x[MismatchedTypes-46] - _ = x[DivByZero-47] - _ = x[NonNumericIncDec-48] - _ = x[UnaddressableOperand-49] - _ = x[InvalidIndirection-50] - _ = x[NonIndexableOperand-51] - _ = x[InvalidIndex-52] - _ = x[SwappedSliceIndices-53] - _ = x[NonSliceableOperand-54] - _ = x[InvalidSliceExpr-55] - _ = x[InvalidShiftCount-56] - _ = x[InvalidShiftOperand-57] - _ = x[InvalidReceive-58] - _ = x[InvalidSend-59] - _ = x[DuplicateLitKey-60] - _ = x[MissingLitKey-61] - _ = x[InvalidLitIndex-62] - _ = x[OversizeArrayLit-63] - _ = x[MixedStructLit-64] - _ = x[InvalidStructLit-65] - _ = x[MissingLitField-66] - _ = x[DuplicateLitField-67] - _ = x[UnexportedLitField-68] - _ = x[InvalidLitField-69] - _ = x[UntypedLit-70] - _ = x[InvalidLit-71] - _ = x[AmbiguousSelector-72] - _ = x[UndeclaredImportedName-73] - _ = x[UnexportedName-74] - _ = x[UndeclaredName-75] - _ = x[MissingFieldOrMethod-76] - _ = x[BadDotDotDotSyntax-77] - _ = x[NonVariadicDotDotDot-78] - _ = x[MisplacedDotDotDot-79] - _ = x[InvalidDotDotDotOperand-80] - _ = x[InvalidDotDotDot-81] - _ = x[UncalledBuiltin-82] - _ = x[InvalidAppend-83] - _ = x[InvalidCap-84] - _ = x[InvalidClose-85] - _ = x[InvalidCopy-86] - _ = x[InvalidComplex-87] - _ = x[InvalidDelete-88] - _ = x[InvalidImag-89] - _ = x[InvalidLen-90] - _ = x[SwappedMakeArgs-91] - _ = x[InvalidMake-92] - _ = x[InvalidReal-93] - _ = x[InvalidAssert-94] - _ = x[ImpossibleAssert-95] - _ = x[InvalidConversion-96] - _ = x[InvalidUntypedConversion-97] - _ = x[BadOffsetofSyntax-98] - _ = x[InvalidOffsetof-99] - _ = x[UnusedExpr-100] - _ = x[UnusedVar-101] - _ = x[MissingReturn-102] - _ = x[WrongResultCount-103] - _ = x[OutOfScopeResult-104] - _ = x[InvalidCond-105] - _ = x[InvalidPostDecl-106] - _ = x[InvalidChanRange-107] - _ = x[InvalidIterVar-108] - _ = x[InvalidRangeExpr-109] - _ = x[MisplacedBreak-110] - _ = x[MisplacedContinue-111] - _ = x[MisplacedFallthrough-112] - _ = x[DuplicateCase-113] - _ = x[DuplicateDefault-114] - _ = x[BadTypeKeyword-115] - _ = x[InvalidTypeSwitch-116] - _ = x[InvalidExprSwitch-117] - _ = x[InvalidSelectCase-118] - _ = x[UndeclaredLabel-119] - _ = x[DuplicateLabel-120] - _ = x[MisplacedLabel-121] - _ = x[UnusedLabel-122] - _ = x[JumpOverDecl-123] - _ = x[JumpIntoBlock-124] - _ = x[InvalidMethodExpr-125] - _ = x[WrongArgCount-126] - _ = x[InvalidCall-127] - _ = x[UnusedResults-128] - _ = x[InvalidDefer-129] - _ = x[InvalidGo-130] - _ = x[BadDecl-131] - _ = x[RepeatedDecl-132] - _ = x[InvalidUnsafeAdd-133] - _ = x[InvalidUnsafeSlice-134] - _ = x[UnsupportedFeature-135] - _ = x[NotAGenericType-136] - _ = x[WrongTypeArgCount-137] - _ = x[CannotInferTypeArgs-138] - _ = x[InvalidTypeArg-139] - _ = x[InvalidInstanceCycle-140] - _ = x[InvalidUnion-141] - _ = x[MisplacedConstraintIface-142] - _ = x[InvalidMethodTypeParams-143] - _ = x[MisplacedTypeParam-144] -} - -const _ErrorCode_name = "TestBlankPkgNameMismatchedPkgNameInvalidPkgUseBadImportPathBrokenImportImportCRenamedUnusedImportInvalidInitCycleDuplicateDeclInvalidDeclCycleInvalidTypeCycleInvalidConstInitInvalidConstValInvalidConstTypeUntypedNilWrongAssignCountUnassignableOperandNoNewVarMultiValAssignOpInvalidIfaceAssignInvalidChanAssignIncompatibleAssignUnaddressableFieldAssignNotATypeInvalidArrayLenBlankIfaceMethodIncomparableMapKeyInvalidIfaceEmbedInvalidPtrEmbedBadRecvInvalidRecvDuplicateFieldAndMethodDuplicateMethodInvalidBlankInvalidIotaMissingInitBodyInvalidInitSigInvalidInitDeclInvalidMainDeclTooManyValuesNotAnExprTruncatedFloatNumericOverflowUndefinedOpMismatchedTypesDivByZeroNonNumericIncDecUnaddressableOperandInvalidIndirectionNonIndexableOperandInvalidIndexSwappedSliceIndicesNonSliceableOperandInvalidSliceExprInvalidShiftCountInvalidShiftOperandInvalidReceiveInvalidSendDuplicateLitKeyMissingLitKeyInvalidLitIndexOversizeArrayLitMixedStructLitInvalidStructLitMissingLitFieldDuplicateLitFieldUnexportedLitFieldInvalidLitFieldUntypedLitInvalidLitAmbiguousSelectorUndeclaredImportedNameUnexportedNameUndeclaredNameMissingFieldOrMethodBadDotDotDotSyntaxNonVariadicDotDotDotMisplacedDotDotDotInvalidDotDotDotOperandInvalidDotDotDotUncalledBuiltinInvalidAppendInvalidCapInvalidCloseInvalidCopyInvalidComplexInvalidDeleteInvalidImagInvalidLenSwappedMakeArgsInvalidMakeInvalidRealInvalidAssertImpossibleAssertInvalidConversionInvalidUntypedConversionBadOffsetofSyntaxInvalidOffsetofUnusedExprUnusedVarMissingReturnWrongResultCountOutOfScopeResultInvalidCondInvalidPostDeclInvalidChanRangeInvalidIterVarInvalidRangeExprMisplacedBreakMisplacedContinueMisplacedFallthroughDuplicateCaseDuplicateDefaultBadTypeKeywordInvalidTypeSwitchInvalidExprSwitchInvalidSelectCaseUndeclaredLabelDuplicateLabelMisplacedLabelUnusedLabelJumpOverDeclJumpIntoBlockInvalidMethodExprWrongArgCountInvalidCallUnusedResultsInvalidDeferInvalidGoBadDeclRepeatedDeclInvalidUnsafeAddInvalidUnsafeSliceUnsupportedFeatureNotAGenericTypeWrongTypeArgCountCannotInferTypeArgsInvalidTypeArgInvalidInstanceCycleInvalidUnionMisplacedConstraintIfaceInvalidMethodTypeParamsMisplacedTypeParam" - -var _ErrorCode_index = [...]uint16{0, 4, 16, 33, 46, 59, 71, 85, 97, 113, 126, 142, 158, 174, 189, 205, 215, 231, 250, 258, 274, 292, 309, 327, 351, 359, 374, 390, 408, 425, 440, 447, 458, 481, 496, 508, 519, 534, 548, 563, 578, 591, 600, 614, 629, 640, 655, 664, 680, 700, 718, 737, 749, 768, 787, 803, 820, 839, 853, 864, 879, 892, 907, 923, 937, 953, 968, 985, 1003, 1018, 1028, 1038, 1055, 1077, 1091, 1105, 1125, 1143, 1163, 1181, 1204, 1220, 1235, 1248, 1258, 1270, 1281, 1295, 1308, 1319, 1329, 1344, 1355, 1366, 1379, 1395, 1412, 1436, 1453, 1468, 1478, 1487, 1500, 1516, 1532, 1543, 1558, 1574, 1588, 1604, 1618, 1635, 1655, 1668, 1684, 1698, 1715, 1732, 1749, 1764, 1778, 1792, 1803, 1815, 1828, 1845, 1858, 1869, 1882, 1894, 1903, 1910, 1922, 1938, 1956, 1974, 1989, 2006, 2025, 2039, 2059, 2071, 2095, 2118, 2136} - -func (i ErrorCode) String() string { - i -= 1 - if i < 0 || i >= ErrorCode(len(_ErrorCode_index)-1) { - return "ErrorCode(" + strconv.FormatInt(int64(i+1), 10) + ")" - } - return _ErrorCode_name[_ErrorCode_index[i]:_ErrorCode_index[i+1]] -} diff --git a/vendor/golang.org/x/tools/internal/typesinternal/types.go b/vendor/golang.org/x/tools/internal/typesinternal/types.go deleted file mode 100644 index ce7d4351b..000000000 --- a/vendor/golang.org/x/tools/internal/typesinternal/types.go +++ /dev/null @@ -1,52 +0,0 @@ -// Copyright 2020 The Go Authors. All rights reserved. -// Use of this source code is governed by a BSD-style -// license that can be found in the LICENSE file. - -// Package typesinternal provides access to internal go/types APIs that are not -// yet exported. -package typesinternal - -import ( - "go/token" - "go/types" - "reflect" - "unsafe" -) - -func SetUsesCgo(conf *types.Config) bool { - v := reflect.ValueOf(conf).Elem() - - f := v.FieldByName("go115UsesCgo") - if !f.IsValid() { - f = v.FieldByName("UsesCgo") - if !f.IsValid() { - return false - } - } - - addr := unsafe.Pointer(f.UnsafeAddr()) - *(*bool)(addr) = true - - return true -} - -// ReadGo116ErrorData extracts additional information from types.Error values -// generated by Go version 1.16 and later: the error code, start position, and -// end position. If all positions are valid, start <= err.Pos <= end. -// -// If the data could not be read, the final result parameter will be false. -func ReadGo116ErrorData(err types.Error) (code ErrorCode, start, end token.Pos, ok bool) { - var data [3]int - // By coincidence all of these fields are ints, which simplifies things. - v := reflect.ValueOf(err) - for i, name := range []string{"go116code", "go116start", "go116end"} { - f := v.FieldByName(name) - if !f.IsValid() { - return 0, 0, 0, false - } - data[i] = int(f.Int()) - } - return ErrorCode(data[0]), token.Pos(data[1]), token.Pos(data[2]), true -} - -var SetGoVersion = func(conf *types.Config, version string) bool { return false } diff --git a/vendor/golang.org/x/tools/internal/typesinternal/types_118.go b/vendor/golang.org/x/tools/internal/typesinternal/types_118.go deleted file mode 100644 index a42b072a6..000000000 --- a/vendor/golang.org/x/tools/internal/typesinternal/types_118.go +++ /dev/null @@ -1,19 +0,0 @@ -// Copyright 2021 The Go Authors. All rights reserved. -// Use of this source code is governed by a BSD-style -// license that can be found in the LICENSE file. - -//go:build go1.18 -// +build go1.18 - -package typesinternal - -import ( - "go/types" -) - -func init() { - SetGoVersion = func(conf *types.Config, version string) bool { - conf.GoVersion = version - return true - } -} |