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path: root/vendor/github.com/golang/protobuf/proto/text_decode.go
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Diffstat (limited to 'vendor/github.com/golang/protobuf/proto/text_decode.go')
-rw-r--r--vendor/github.com/golang/protobuf/proto/text_decode.go801
1 files changed, 0 insertions, 801 deletions
diff --git a/vendor/github.com/golang/protobuf/proto/text_decode.go b/vendor/github.com/golang/protobuf/proto/text_decode.go
deleted file mode 100644
index 47eb3e445..000000000
--- a/vendor/github.com/golang/protobuf/proto/text_decode.go
+++ /dev/null
@@ -1,801 +0,0 @@
-// Copyright 2010 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 proto
-
-import (
- "encoding"
- "errors"
- "fmt"
- "reflect"
- "strconv"
- "strings"
- "unicode/utf8"
-
- "google.golang.org/protobuf/encoding/prototext"
- protoV2 "google.golang.org/protobuf/proto"
- "google.golang.org/protobuf/reflect/protoreflect"
- "google.golang.org/protobuf/reflect/protoregistry"
-)
-
-const wrapTextUnmarshalV2 = false
-
-// ParseError is returned by UnmarshalText.
-type ParseError struct {
- Message string
-
- // Deprecated: Do not use.
- Line, Offset int
-}
-
-func (e *ParseError) Error() string {
- if wrapTextUnmarshalV2 {
- return e.Message
- }
- if e.Line == 1 {
- return fmt.Sprintf("line 1.%d: %v", e.Offset, e.Message)
- }
- return fmt.Sprintf("line %d: %v", e.Line, e.Message)
-}
-
-// UnmarshalText parses a proto text formatted string into m.
-func UnmarshalText(s string, m Message) error {
- if u, ok := m.(encoding.TextUnmarshaler); ok {
- return u.UnmarshalText([]byte(s))
- }
-
- m.Reset()
- mi := MessageV2(m)
-
- if wrapTextUnmarshalV2 {
- err := prototext.UnmarshalOptions{
- AllowPartial: true,
- }.Unmarshal([]byte(s), mi)
- if err != nil {
- return &ParseError{Message: err.Error()}
- }
- return checkRequiredNotSet(mi)
- } else {
- if err := newTextParser(s).unmarshalMessage(mi.ProtoReflect(), ""); err != nil {
- return err
- }
- return checkRequiredNotSet(mi)
- }
-}
-
-type textParser struct {
- s string // remaining input
- done bool // whether the parsing is finished (success or error)
- backed bool // whether back() was called
- offset, line int
- cur token
-}
-
-type token struct {
- value string
- err *ParseError
- line int // line number
- offset int // byte number from start of input, not start of line
- unquoted string // the unquoted version of value, if it was a quoted string
-}
-
-func newTextParser(s string) *textParser {
- p := new(textParser)
- p.s = s
- p.line = 1
- p.cur.line = 1
- return p
-}
-
-func (p *textParser) unmarshalMessage(m protoreflect.Message, terminator string) (err error) {
- md := m.Descriptor()
- fds := md.Fields()
-
- // A struct is a sequence of "name: value", terminated by one of
- // '>' or '}', or the end of the input. A name may also be
- // "[extension]" or "[type/url]".
- //
- // The whole struct can also be an expanded Any message, like:
- // [type/url] < ... struct contents ... >
- seen := make(map[protoreflect.FieldNumber]bool)
- for {
- tok := p.next()
- if tok.err != nil {
- return tok.err
- }
- if tok.value == terminator {
- break
- }
- if tok.value == "[" {
- if err := p.unmarshalExtensionOrAny(m, seen); err != nil {
- return err
- }
- continue
- }
-
- // This is a normal, non-extension field.
- name := protoreflect.Name(tok.value)
- fd := fds.ByName(name)
- switch {
- case fd == nil:
- gd := fds.ByName(protoreflect.Name(strings.ToLower(string(name))))
- if gd != nil && gd.Kind() == protoreflect.GroupKind && gd.Message().Name() == name {
- fd = gd
- }
- case fd.Kind() == protoreflect.GroupKind && fd.Message().Name() != name:
- fd = nil
- case fd.IsWeak() && fd.Message().IsPlaceholder():
- fd = nil
- }
- if fd == nil {
- typeName := string(md.FullName())
- if m, ok := m.Interface().(Message); ok {
- t := reflect.TypeOf(m)
- if t.Kind() == reflect.Ptr {
- typeName = t.Elem().String()
- }
- }
- return p.errorf("unknown field name %q in %v", name, typeName)
- }
- if od := fd.ContainingOneof(); od != nil && m.WhichOneof(od) != nil {
- return p.errorf("field '%s' would overwrite already parsed oneof '%s'", name, od.Name())
- }
- if fd.Cardinality() != protoreflect.Repeated && seen[fd.Number()] {
- return p.errorf("non-repeated field %q was repeated", fd.Name())
- }
- seen[fd.Number()] = true
-
- // Consume any colon.
- if err := p.checkForColon(fd); err != nil {
- return err
- }
-
- // Parse into the field.
- v := m.Get(fd)
- if !m.Has(fd) && (fd.IsList() || fd.IsMap() || fd.Message() != nil) {
- v = m.Mutable(fd)
- }
- if v, err = p.unmarshalValue(v, fd); err != nil {
- return err
- }
- m.Set(fd, v)
-
- if err := p.consumeOptionalSeparator(); err != nil {
- return err
- }
- }
- return nil
-}
-
-func (p *textParser) unmarshalExtensionOrAny(m protoreflect.Message, seen map[protoreflect.FieldNumber]bool) error {
- name, err := p.consumeExtensionOrAnyName()
- if err != nil {
- return err
- }
-
- // If it contains a slash, it's an Any type URL.
- if slashIdx := strings.LastIndex(name, "/"); slashIdx >= 0 {
- tok := p.next()
- if tok.err != nil {
- return tok.err
- }
- // consume an optional colon
- if tok.value == ":" {
- tok = p.next()
- if tok.err != nil {
- return tok.err
- }
- }
-
- var terminator string
- switch tok.value {
- case "<":
- terminator = ">"
- case "{":
- terminator = "}"
- default:
- return p.errorf("expected '{' or '<', found %q", tok.value)
- }
-
- mt, err := protoregistry.GlobalTypes.FindMessageByURL(name)
- if err != nil {
- return p.errorf("unrecognized message %q in google.protobuf.Any", name[slashIdx+len("/"):])
- }
- m2 := mt.New()
- if err := p.unmarshalMessage(m2, terminator); err != nil {
- return err
- }
- b, err := protoV2.Marshal(m2.Interface())
- if err != nil {
- return p.errorf("failed to marshal message of type %q: %v", name[slashIdx+len("/"):], err)
- }
-
- urlFD := m.Descriptor().Fields().ByName("type_url")
- valFD := m.Descriptor().Fields().ByName("value")
- if seen[urlFD.Number()] {
- return p.errorf("Any message unpacked multiple times, or %q already set", urlFD.Name())
- }
- if seen[valFD.Number()] {
- return p.errorf("Any message unpacked multiple times, or %q already set", valFD.Name())
- }
- m.Set(urlFD, protoreflect.ValueOfString(name))
- m.Set(valFD, protoreflect.ValueOfBytes(b))
- seen[urlFD.Number()] = true
- seen[valFD.Number()] = true
- return nil
- }
-
- xname := protoreflect.FullName(name)
- xt, _ := protoregistry.GlobalTypes.FindExtensionByName(xname)
- if xt == nil && isMessageSet(m.Descriptor()) {
- xt, _ = protoregistry.GlobalTypes.FindExtensionByName(xname.Append("message_set_extension"))
- }
- if xt == nil {
- return p.errorf("unrecognized extension %q", name)
- }
- fd := xt.TypeDescriptor()
- if fd.ContainingMessage().FullName() != m.Descriptor().FullName() {
- return p.errorf("extension field %q does not extend message %q", name, m.Descriptor().FullName())
- }
-
- if err := p.checkForColon(fd); err != nil {
- return err
- }
-
- v := m.Get(fd)
- if !m.Has(fd) && (fd.IsList() || fd.IsMap() || fd.Message() != nil) {
- v = m.Mutable(fd)
- }
- v, err = p.unmarshalValue(v, fd)
- if err != nil {
- return err
- }
- m.Set(fd, v)
- return p.consumeOptionalSeparator()
-}
-
-func (p *textParser) unmarshalValue(v protoreflect.Value, fd protoreflect.FieldDescriptor) (protoreflect.Value, error) {
- tok := p.next()
- if tok.err != nil {
- return v, tok.err
- }
- if tok.value == "" {
- return v, p.errorf("unexpected EOF")
- }
-
- switch {
- case fd.IsList():
- lv := v.List()
- var err error
- if tok.value == "[" {
- // Repeated field with list notation, like [1,2,3].
- for {
- vv := lv.NewElement()
- vv, err = p.unmarshalSingularValue(vv, fd)
- if err != nil {
- return v, err
- }
- lv.Append(vv)
-
- tok := p.next()
- if tok.err != nil {
- return v, tok.err
- }
- if tok.value == "]" {
- break
- }
- if tok.value != "," {
- return v, p.errorf("Expected ']' or ',' found %q", tok.value)
- }
- }
- return v, nil
- }
-
- // One value of the repeated field.
- p.back()
- vv := lv.NewElement()
- vv, err = p.unmarshalSingularValue(vv, fd)
- if err != nil {
- return v, err
- }
- lv.Append(vv)
- return v, nil
- case fd.IsMap():
- // The map entry should be this sequence of tokens:
- // < key : KEY value : VALUE >
- // However, implementations may omit key or value, and technically
- // we should support them in any order.
- var terminator string
- switch tok.value {
- case "<":
- terminator = ">"
- case "{":
- terminator = "}"
- default:
- return v, p.errorf("expected '{' or '<', found %q", tok.value)
- }
-
- keyFD := fd.MapKey()
- valFD := fd.MapValue()
-
- mv := v.Map()
- kv := keyFD.Default()
- vv := mv.NewValue()
- for {
- tok := p.next()
- if tok.err != nil {
- return v, tok.err
- }
- if tok.value == terminator {
- break
- }
- var err error
- switch tok.value {
- case "key":
- if err := p.consumeToken(":"); err != nil {
- return v, err
- }
- if kv, err = p.unmarshalSingularValue(kv, keyFD); err != nil {
- return v, err
- }
- if err := p.consumeOptionalSeparator(); err != nil {
- return v, err
- }
- case "value":
- if err := p.checkForColon(valFD); err != nil {
- return v, err
- }
- if vv, err = p.unmarshalSingularValue(vv, valFD); err != nil {
- return v, err
- }
- if err := p.consumeOptionalSeparator(); err != nil {
- return v, err
- }
- default:
- p.back()
- return v, p.errorf(`expected "key", "value", or %q, found %q`, terminator, tok.value)
- }
- }
- mv.Set(kv.MapKey(), vv)
- return v, nil
- default:
- p.back()
- return p.unmarshalSingularValue(v, fd)
- }
-}
-
-func (p *textParser) unmarshalSingularValue(v protoreflect.Value, fd protoreflect.FieldDescriptor) (protoreflect.Value, error) {
- tok := p.next()
- if tok.err != nil {
- return v, tok.err
- }
- if tok.value == "" {
- return v, p.errorf("unexpected EOF")
- }
-
- switch fd.Kind() {
- case protoreflect.BoolKind:
- switch tok.value {
- case "true", "1", "t", "True":
- return protoreflect.ValueOfBool(true), nil
- case "false", "0", "f", "False":
- return protoreflect.ValueOfBool(false), nil
- }
- case protoreflect.Int32Kind, protoreflect.Sint32Kind, protoreflect.Sfixed32Kind:
- if x, err := strconv.ParseInt(tok.value, 0, 32); err == nil {
- return protoreflect.ValueOfInt32(int32(x)), nil
- }
-
- // The C++ parser accepts large positive hex numbers that uses
- // two's complement arithmetic to represent negative numbers.
- // This feature is here for backwards compatibility with C++.
- if strings.HasPrefix(tok.value, "0x") {
- if x, err := strconv.ParseUint(tok.value, 0, 32); err == nil {
- return protoreflect.ValueOfInt32(int32(-(int64(^x) + 1))), nil
- }
- }
- case protoreflect.Int64Kind, protoreflect.Sint64Kind, protoreflect.Sfixed64Kind:
- if x, err := strconv.ParseInt(tok.value, 0, 64); err == nil {
- return protoreflect.ValueOfInt64(int64(x)), nil
- }
-
- // The C++ parser accepts large positive hex numbers that uses
- // two's complement arithmetic to represent negative numbers.
- // This feature is here for backwards compatibility with C++.
- if strings.HasPrefix(tok.value, "0x") {
- if x, err := strconv.ParseUint(tok.value, 0, 64); err == nil {
- return protoreflect.ValueOfInt64(int64(-(int64(^x) + 1))), nil
- }
- }
- case protoreflect.Uint32Kind, protoreflect.Fixed32Kind:
- if x, err := strconv.ParseUint(tok.value, 0, 32); err == nil {
- return protoreflect.ValueOfUint32(uint32(x)), nil
- }
- case protoreflect.Uint64Kind, protoreflect.Fixed64Kind:
- if x, err := strconv.ParseUint(tok.value, 0, 64); err == nil {
- return protoreflect.ValueOfUint64(uint64(x)), nil
- }
- case protoreflect.FloatKind:
- // Ignore 'f' for compatibility with output generated by C++,
- // but don't remove 'f' when the value is "-inf" or "inf".
- v := tok.value
- if strings.HasSuffix(v, "f") && v != "-inf" && v != "inf" {
- v = v[:len(v)-len("f")]
- }
- if x, err := strconv.ParseFloat(v, 32); err == nil {
- return protoreflect.ValueOfFloat32(float32(x)), nil
- }
- case protoreflect.DoubleKind:
- // Ignore 'f' for compatibility with output generated by C++,
- // but don't remove 'f' when the value is "-inf" or "inf".
- v := tok.value
- if strings.HasSuffix(v, "f") && v != "-inf" && v != "inf" {
- v = v[:len(v)-len("f")]
- }
- if x, err := strconv.ParseFloat(v, 64); err == nil {
- return protoreflect.ValueOfFloat64(float64(x)), nil
- }
- case protoreflect.StringKind:
- if isQuote(tok.value[0]) {
- return protoreflect.ValueOfString(tok.unquoted), nil
- }
- case protoreflect.BytesKind:
- if isQuote(tok.value[0]) {
- return protoreflect.ValueOfBytes([]byte(tok.unquoted)), nil
- }
- case protoreflect.EnumKind:
- if x, err := strconv.ParseInt(tok.value, 0, 32); err == nil {
- return protoreflect.ValueOfEnum(protoreflect.EnumNumber(x)), nil
- }
- vd := fd.Enum().Values().ByName(protoreflect.Name(tok.value))
- if vd != nil {
- return protoreflect.ValueOfEnum(vd.Number()), nil
- }
- case protoreflect.MessageKind, protoreflect.GroupKind:
- var terminator string
- switch tok.value {
- case "{":
- terminator = "}"
- case "<":
- terminator = ">"
- default:
- return v, p.errorf("expected '{' or '<', found %q", tok.value)
- }
- err := p.unmarshalMessage(v.Message(), terminator)
- return v, err
- default:
- panic(fmt.Sprintf("invalid kind %v", fd.Kind()))
- }
- return v, p.errorf("invalid %v: %v", fd.Kind(), tok.value)
-}
-
-// Consume a ':' from the input stream (if the next token is a colon),
-// returning an error if a colon is needed but not present.
-func (p *textParser) checkForColon(fd protoreflect.FieldDescriptor) *ParseError {
- tok := p.next()
- if tok.err != nil {
- return tok.err
- }
- if tok.value != ":" {
- if fd.Message() == nil {
- return p.errorf("expected ':', found %q", tok.value)
- }
- p.back()
- }
- return nil
-}
-
-// consumeExtensionOrAnyName consumes an extension name or an Any type URL and
-// the following ']'. It returns the name or URL consumed.
-func (p *textParser) consumeExtensionOrAnyName() (string, error) {
- tok := p.next()
- if tok.err != nil {
- return "", tok.err
- }
-
- // If extension name or type url is quoted, it's a single token.
- if len(tok.value) > 2 && isQuote(tok.value[0]) && tok.value[len(tok.value)-1] == tok.value[0] {
- name, err := unquoteC(tok.value[1:len(tok.value)-1], rune(tok.value[0]))
- if err != nil {
- return "", err
- }
- return name, p.consumeToken("]")
- }
-
- // Consume everything up to "]"
- var parts []string
- for tok.value != "]" {
- parts = append(parts, tok.value)
- tok = p.next()
- if tok.err != nil {
- return "", p.errorf("unrecognized type_url or extension name: %s", tok.err)
- }
- if p.done && tok.value != "]" {
- return "", p.errorf("unclosed type_url or extension name")
- }
- }
- return strings.Join(parts, ""), nil
-}
-
-// consumeOptionalSeparator consumes an optional semicolon or comma.
-// It is used in unmarshalMessage to provide backward compatibility.
-func (p *textParser) consumeOptionalSeparator() error {
- tok := p.next()
- if tok.err != nil {
- return tok.err
- }
- if tok.value != ";" && tok.value != "," {
- p.back()
- }
- return nil
-}
-
-func (p *textParser) errorf(format string, a ...interface{}) *ParseError {
- pe := &ParseError{fmt.Sprintf(format, a...), p.cur.line, p.cur.offset}
- p.cur.err = pe
- p.done = true
- return pe
-}
-
-func (p *textParser) skipWhitespace() {
- i := 0
- for i < len(p.s) && (isWhitespace(p.s[i]) || p.s[i] == '#') {
- if p.s[i] == '#' {
- // comment; skip to end of line or input
- for i < len(p.s) && p.s[i] != '\n' {
- i++
- }
- if i == len(p.s) {
- break
- }
- }
- if p.s[i] == '\n' {
- p.line++
- }
- i++
- }
- p.offset += i
- p.s = p.s[i:len(p.s)]
- if len(p.s) == 0 {
- p.done = true
- }
-}
-
-func (p *textParser) advance() {
- // Skip whitespace
- p.skipWhitespace()
- if p.done {
- return
- }
-
- // Start of non-whitespace
- p.cur.err = nil
- p.cur.offset, p.cur.line = p.offset, p.line
- p.cur.unquoted = ""
- switch p.s[0] {
- case '<', '>', '{', '}', ':', '[', ']', ';', ',', '/':
- // Single symbol
- p.cur.value, p.s = p.s[0:1], p.s[1:len(p.s)]
- case '"', '\'':
- // Quoted string
- i := 1
- for i < len(p.s) && p.s[i] != p.s[0] && p.s[i] != '\n' {
- if p.s[i] == '\\' && i+1 < len(p.s) {
- // skip escaped char
- i++
- }
- i++
- }
- if i >= len(p.s) || p.s[i] != p.s[0] {
- p.errorf("unmatched quote")
- return
- }
- unq, err := unquoteC(p.s[1:i], rune(p.s[0]))
- if err != nil {
- p.errorf("invalid quoted string %s: %v", p.s[0:i+1], err)
- return
- }
- p.cur.value, p.s = p.s[0:i+1], p.s[i+1:len(p.s)]
- p.cur.unquoted = unq
- default:
- i := 0
- for i < len(p.s) && isIdentOrNumberChar(p.s[i]) {
- i++
- }
- if i == 0 {
- p.errorf("unexpected byte %#x", p.s[0])
- return
- }
- p.cur.value, p.s = p.s[0:i], p.s[i:len(p.s)]
- }
- p.offset += len(p.cur.value)
-}
-
-// Back off the parser by one token. Can only be done between calls to next().
-// It makes the next advance() a no-op.
-func (p *textParser) back() { p.backed = true }
-
-// Advances the parser and returns the new current token.
-func (p *textParser) next() *token {
- if p.backed || p.done {
- p.backed = false
- return &p.cur
- }
- p.advance()
- if p.done {
- p.cur.value = ""
- } else if len(p.cur.value) > 0 && isQuote(p.cur.value[0]) {
- // Look for multiple quoted strings separated by whitespace,
- // and concatenate them.
- cat := p.cur
- for {
- p.skipWhitespace()
- if p.done || !isQuote(p.s[0]) {
- break
- }
- p.advance()
- if p.cur.err != nil {
- return &p.cur
- }
- cat.value += " " + p.cur.value
- cat.unquoted += p.cur.unquoted
- }
- p.done = false // parser may have seen EOF, but we want to return cat
- p.cur = cat
- }
- return &p.cur
-}
-
-func (p *textParser) consumeToken(s string) error {
- tok := p.next()
- if tok.err != nil {
- return tok.err
- }
- if tok.value != s {
- p.back()
- return p.errorf("expected %q, found %q", s, tok.value)
- }
- return nil
-}
-
-var errBadUTF8 = errors.New("proto: bad UTF-8")
-
-func unquoteC(s string, quote rune) (string, error) {
- // This is based on C++'s tokenizer.cc.
- // Despite its name, this is *not* parsing C syntax.
- // For instance, "\0" is an invalid quoted string.
-
- // Avoid allocation in trivial cases.
- simple := true
- for _, r := range s {
- if r == '\\' || r == quote {
- simple = false
- break
- }
- }
- if simple {
- return s, nil
- }
-
- buf := make([]byte, 0, 3*len(s)/2)
- for len(s) > 0 {
- r, n := utf8.DecodeRuneInString(s)
- if r == utf8.RuneError && n == 1 {
- return "", errBadUTF8
- }
- s = s[n:]
- if r != '\\' {
- if r < utf8.RuneSelf {
- buf = append(buf, byte(r))
- } else {
- buf = append(buf, string(r)...)
- }
- continue
- }
-
- ch, tail, err := unescape(s)
- if err != nil {
- return "", err
- }
- buf = append(buf, ch...)
- s = tail
- }
- return string(buf), nil
-}
-
-func unescape(s string) (ch string, tail string, err error) {
- r, n := utf8.DecodeRuneInString(s)
- if r == utf8.RuneError && n == 1 {
- return "", "", errBadUTF8
- }
- s = s[n:]
- switch r {
- case 'a':
- return "\a", s, nil
- case 'b':
- return "\b", s, nil
- case 'f':
- return "\f", s, nil
- case 'n':
- return "\n", s, nil
- case 'r':
- return "\r", s, nil
- case 't':
- return "\t", s, nil
- case 'v':
- return "\v", s, nil
- case '?':
- return "?", s, nil // trigraph workaround
- case '\'', '"', '\\':
- return string(r), s, nil
- case '0', '1', '2', '3', '4', '5', '6', '7':
- if len(s) < 2 {
- return "", "", fmt.Errorf(`\%c requires 2 following digits`, r)
- }
- ss := string(r) + s[:2]
- s = s[2:]
- i, err := strconv.ParseUint(ss, 8, 8)
- if err != nil {
- return "", "", fmt.Errorf(`\%s contains non-octal digits`, ss)
- }
- return string([]byte{byte(i)}), s, nil
- case 'x', 'X', 'u', 'U':
- var n int
- switch r {
- case 'x', 'X':
- n = 2
- case 'u':
- n = 4
- case 'U':
- n = 8
- }
- if len(s) < n {
- return "", "", fmt.Errorf(`\%c requires %d following digits`, r, n)
- }
- ss := s[:n]
- s = s[n:]
- i, err := strconv.ParseUint(ss, 16, 64)
- if err != nil {
- return "", "", fmt.Errorf(`\%c%s contains non-hexadecimal digits`, r, ss)
- }
- if r == 'x' || r == 'X' {
- return string([]byte{byte(i)}), s, nil
- }
- if i > utf8.MaxRune {
- return "", "", fmt.Errorf(`\%c%s is not a valid Unicode code point`, r, ss)
- }
- return string(rune(i)), s, nil
- }
- return "", "", fmt.Errorf(`unknown escape \%c`, r)
-}
-
-func isIdentOrNumberChar(c byte) bool {
- switch {
- case 'A' <= c && c <= 'Z', 'a' <= c && c <= 'z':
- return true
- case '0' <= c && c <= '9':
- return true
- }
- switch c {
- case '-', '+', '.', '_':
- return true
- }
- return false
-}
-
-func isWhitespace(c byte) bool {
- switch c {
- case ' ', '\t', '\n', '\r':
- return true
- }
- return false
-}
-
-func isQuote(c byte) bool {
- switch c {
- case '"', '\'':
- return true
- }
- return false
-}
generated by cgit v1.2.3 (git 2.46.0) at 2025-07-13 13:59:40 +0000