diff options
Diffstat (limited to 'vendor/golang.org/x/tools/internal/pkgbits/version.go')
-rw-r--r-- | vendor/golang.org/x/tools/internal/pkgbits/version.go | 85 |
1 files changed, 0 insertions, 85 deletions
diff --git a/vendor/golang.org/x/tools/internal/pkgbits/version.go b/vendor/golang.org/x/tools/internal/pkgbits/version.go deleted file mode 100644 index 53af9df22..000000000 --- a/vendor/golang.org/x/tools/internal/pkgbits/version.go +++ /dev/null @@ -1,85 +0,0 @@ -// Copyright 2024 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 pkgbits - -// Version indicates a version of a unified IR bitstream. -// Each Version indicates the addition, removal, or change of -// new data in the bitstream. -// -// These are serialized to disk and the interpretation remains fixed. -type Version uint32 - -const ( - // V0: initial prototype. - // - // All data that is not assigned a Field is in version V0 - // and has not been deprecated. - V0 Version = iota - - // V1: adds the Flags uint32 word - V1 - - // V2: removes unused legacy fields and supports type parameters for aliases. - // - remove the legacy "has init" bool from the public root - // - remove obj's "derived func instance" bool - // - add a TypeParamNames field to ObjAlias - // - remove derived info "needed" bool - V2 - - numVersions = iota -) - -// Field denotes a unit of data in the serialized unified IR bitstream. -// It is conceptually a like field in a structure. -// -// We only really need Fields when the data may or may not be present -// in a stream based on the Version of the bitstream. -// -// Unlike much of pkgbits, Fields are not serialized and -// can change values as needed. -type Field int - -const ( - // Flags in a uint32 in the header of a bitstream - // that is used to indicate whether optional features are enabled. - Flags Field = iota - - // Deprecated: HasInit was a bool indicating whether a package - // has any init functions. - HasInit - - // Deprecated: DerivedFuncInstance was a bool indicating - // whether an object was a function instance. - DerivedFuncInstance - - // ObjAlias has a list of TypeParamNames. - AliasTypeParamNames - - // Deprecated: DerivedInfoNeeded was a bool indicating - // whether a type was a derived type. - DerivedInfoNeeded - - numFields = iota -) - -// introduced is the version a field was added. -var introduced = [numFields]Version{ - Flags: V1, - AliasTypeParamNames: V2, -} - -// removed is the version a field was removed in or 0 for fields -// that have not yet been deprecated. -// (So removed[f]-1 is the last version it is included in.) -var removed = [numFields]Version{ - HasInit: V2, - DerivedFuncInstance: V2, - DerivedInfoNeeded: V2, -} - -// Has reports whether field f is present in a bitstream at version v. -func (v Version) Has(f Field) bool { - return introduced[f] <= v && (v < removed[f] || removed[f] == V0) -} |