diff options
Diffstat (limited to 'vendor/github.com/goccy/go-json/internal/decoder/unmarshal_text.go')
| -rw-r--r-- | vendor/github.com/goccy/go-json/internal/decoder/unmarshal_text.go | 280 |
1 files changed, 0 insertions, 280 deletions
diff --git a/vendor/github.com/goccy/go-json/internal/decoder/unmarshal_text.go b/vendor/github.com/goccy/go-json/internal/decoder/unmarshal_text.go deleted file mode 100644 index 1ef287782..000000000 --- a/vendor/github.com/goccy/go-json/internal/decoder/unmarshal_text.go +++ /dev/null @@ -1,280 +0,0 @@ -package decoder - -import ( - "bytes" - "encoding" - "unicode" - "unicode/utf16" - "unicode/utf8" - "unsafe" - - "github.com/goccy/go-json/internal/errors" - "github.com/goccy/go-json/internal/runtime" -) - -type unmarshalTextDecoder struct { - typ *runtime.Type - structName string - fieldName string -} - -func newUnmarshalTextDecoder(typ *runtime.Type, structName, fieldName string) *unmarshalTextDecoder { - return &unmarshalTextDecoder{ - typ: typ, - structName: structName, - fieldName: fieldName, - } -} - -func (d *unmarshalTextDecoder) annotateError(cursor int64, err error) { - switch e := err.(type) { - case *errors.UnmarshalTypeError: - e.Struct = d.structName - e.Field = d.fieldName - case *errors.SyntaxError: - e.Offset = cursor - } -} - -var ( - nullbytes = []byte(`null`) -) - -func (d *unmarshalTextDecoder) DecodeStream(s *Stream, depth int64, p unsafe.Pointer) error { - s.skipWhiteSpace() - start := s.cursor - if err := s.skipValue(depth); err != nil { - return err - } - src := s.buf[start:s.cursor] - if len(src) > 0 { - switch src[0] { - case '[': - return &errors.UnmarshalTypeError{ - Value: "array", - Type: runtime.RType2Type(d.typ), - Offset: s.totalOffset(), - } - case '{': - return &errors.UnmarshalTypeError{ - Value: "object", - Type: runtime.RType2Type(d.typ), - Offset: s.totalOffset(), - } - case '-', '0', '1', '2', '3', '4', '5', '6', '7', '8', '9': - return &errors.UnmarshalTypeError{ - Value: "number", - Type: runtime.RType2Type(d.typ), - Offset: s.totalOffset(), - } - case 'n': - if bytes.Equal(src, nullbytes) { - *(*unsafe.Pointer)(p) = nil - return nil - } - } - } - dst := make([]byte, len(src)) - copy(dst, src) - - if b, ok := unquoteBytes(dst); ok { - dst = b - } - v := *(*interface{})(unsafe.Pointer(&emptyInterface{ - typ: d.typ, - ptr: p, - })) - if err := v.(encoding.TextUnmarshaler).UnmarshalText(dst); err != nil { - d.annotateError(s.cursor, err) - return err - } - return nil -} - -func (d *unmarshalTextDecoder) Decode(ctx *RuntimeContext, cursor, depth int64, p unsafe.Pointer) (int64, error) { - buf := ctx.Buf - cursor = skipWhiteSpace(buf, cursor) - start := cursor - end, err := skipValue(buf, cursor, depth) - if err != nil { - return 0, err - } - src := buf[start:end] - if len(src) > 0 { - switch src[0] { - case '[': - return 0, &errors.UnmarshalTypeError{ - Value: "array", - Type: runtime.RType2Type(d.typ), - Offset: start, - } - case '{': - return 0, &errors.UnmarshalTypeError{ - Value: "object", - Type: runtime.RType2Type(d.typ), - Offset: start, - } - case '-', '0', '1', '2', '3', '4', '5', '6', '7', '8', '9': - return 0, &errors.UnmarshalTypeError{ - Value: "number", - Type: runtime.RType2Type(d.typ), - Offset: start, - } - case 'n': - if bytes.Equal(src, nullbytes) { - *(*unsafe.Pointer)(p) = nil - return end, nil - } - } - } - - if s, ok := unquoteBytes(src); ok { - src = s - } - v := *(*interface{})(unsafe.Pointer(&emptyInterface{ - typ: d.typ, - ptr: *(*unsafe.Pointer)(unsafe.Pointer(&p)), - })) - if err := v.(encoding.TextUnmarshaler).UnmarshalText(src); err != nil { - d.annotateError(cursor, err) - return 0, err - } - return end, nil -} - -func unquoteBytes(s []byte) (t []byte, ok bool) { - length := len(s) - if length < 2 || s[0] != '"' || s[length-1] != '"' { - return - } - s = s[1 : length-1] - length -= 2 - - // Check for unusual characters. If there are none, - // then no unquoting is needed, so return a slice of the - // original bytes. - r := 0 - for r < length { - c := s[r] - if c == '\\' || c == '"' || c < ' ' { - break - } - if c < utf8.RuneSelf { - r++ - continue - } - rr, size := utf8.DecodeRune(s[r:]) - if rr == utf8.RuneError && size == 1 { - break - } - r += size - } - if r == length { - return s, true - } - - b := make([]byte, length+2*utf8.UTFMax) - w := copy(b, s[0:r]) - for r < length { - // Out of room? Can only happen if s is full of - // malformed UTF-8 and we're replacing each - // byte with RuneError. - if w >= len(b)-2*utf8.UTFMax { - nb := make([]byte, (len(b)+utf8.UTFMax)*2) - copy(nb, b[0:w]) - b = nb - } - switch c := s[r]; { - case c == '\\': - r++ - if r >= length { - return - } - switch s[r] { - default: - return - case '"', '\\', '/', '\'': - b[w] = s[r] - r++ - w++ - case 'b': - b[w] = '\b' - r++ - w++ - case 'f': - b[w] = '\f' - r++ - w++ - case 'n': - b[w] = '\n' - r++ - w++ - case 'r': - b[w] = '\r' - r++ - w++ - case 't': - b[w] = '\t' - r++ - w++ - case 'u': - r-- - rr := getu4(s[r:]) - if rr < 0 { - return - } - r += 6 - if utf16.IsSurrogate(rr) { - rr1 := getu4(s[r:]) - if dec := utf16.DecodeRune(rr, rr1); dec != unicode.ReplacementChar { - // A valid pair; consume. - r += 6 - w += utf8.EncodeRune(b[w:], dec) - break - } - // Invalid surrogate; fall back to replacement rune. - rr = unicode.ReplacementChar - } - w += utf8.EncodeRune(b[w:], rr) - } - - // Quote, control characters are invalid. - case c == '"', c < ' ': - return - - // ASCII - case c < utf8.RuneSelf: - b[w] = c - r++ - w++ - - // Coerce to well-formed UTF-8. - default: - rr, size := utf8.DecodeRune(s[r:]) - r += size - w += utf8.EncodeRune(b[w:], rr) - } - } - return b[0:w], true -} - -func getu4(s []byte) rune { - if len(s) < 6 || s[0] != '\\' || s[1] != 'u' { - return -1 - } - var r rune - for _, c := range s[2:6] { - switch { - case '0' <= c && c <= '9': - c = c - '0' - case 'a' <= c && c <= 'f': - c = c - 'a' + 10 - case 'A' <= c && c <= 'F': - c = c - 'A' + 10 - default: - return -1 - } - r = r*16 + rune(c) - } - return r -} |