diff options
Diffstat (limited to 'vendor/github.com/goccy/go-json/internal/decoder/map.go')
-rw-r--r-- | vendor/github.com/goccy/go-json/internal/decoder/map.go | 186 |
1 files changed, 0 insertions, 186 deletions
diff --git a/vendor/github.com/goccy/go-json/internal/decoder/map.go b/vendor/github.com/goccy/go-json/internal/decoder/map.go deleted file mode 100644 index bb18ef995..000000000 --- a/vendor/github.com/goccy/go-json/internal/decoder/map.go +++ /dev/null @@ -1,186 +0,0 @@ -package decoder - -import ( - "reflect" - "unsafe" - - "github.com/goccy/go-json/internal/errors" - "github.com/goccy/go-json/internal/runtime" -) - -type mapDecoder struct { - mapType *runtime.Type - keyType *runtime.Type - valueType *runtime.Type - canUseAssignFaststrType bool - keyDecoder Decoder - valueDecoder Decoder - structName string - fieldName string -} - -func newMapDecoder(mapType *runtime.Type, keyType *runtime.Type, keyDec Decoder, valueType *runtime.Type, valueDec Decoder, structName, fieldName string) *mapDecoder { - return &mapDecoder{ - mapType: mapType, - keyDecoder: keyDec, - keyType: keyType, - canUseAssignFaststrType: canUseAssignFaststrType(keyType, valueType), - valueType: valueType, - valueDecoder: valueDec, - structName: structName, - fieldName: fieldName, - } -} - -const ( - mapMaxElemSize = 128 -) - -// See detail: https://github.com/goccy/go-json/pull/283 -func canUseAssignFaststrType(key *runtime.Type, value *runtime.Type) bool { - indirectElem := value.Size() > mapMaxElemSize - if indirectElem { - return false - } - return key.Kind() == reflect.String -} - -//go:linkname makemap reflect.makemap -func makemap(*runtime.Type, int) unsafe.Pointer - -//nolint:golint -//go:linkname mapassign_faststr runtime.mapassign_faststr -//go:noescape -func mapassign_faststr(t *runtime.Type, m unsafe.Pointer, s string) unsafe.Pointer - -//go:linkname mapassign reflect.mapassign -//go:noescape -func mapassign(t *runtime.Type, m unsafe.Pointer, k, v unsafe.Pointer) - -func (d *mapDecoder) mapassign(t *runtime.Type, m, k, v unsafe.Pointer) { - if d.canUseAssignFaststrType { - mapV := mapassign_faststr(t, m, *(*string)(k)) - typedmemmove(d.valueType, mapV, v) - } else { - mapassign(t, m, k, v) - } -} - -func (d *mapDecoder) DecodeStream(s *Stream, depth int64, p unsafe.Pointer) error { - depth++ - if depth > maxDecodeNestingDepth { - return errors.ErrExceededMaxDepth(s.char(), s.cursor) - } - - switch s.skipWhiteSpace() { - case 'n': - if err := nullBytes(s); err != nil { - return err - } - **(**unsafe.Pointer)(unsafe.Pointer(&p)) = nil - return nil - case '{': - default: - return errors.ErrExpected("{ character for map value", s.totalOffset()) - } - mapValue := *(*unsafe.Pointer)(p) - if mapValue == nil { - mapValue = makemap(d.mapType, 0) - } - if s.buf[s.cursor+1] == '}' { - *(*unsafe.Pointer)(p) = mapValue - s.cursor += 2 - return nil - } - for { - s.cursor++ - k := unsafe_New(d.keyType) - if err := d.keyDecoder.DecodeStream(s, depth, k); err != nil { - return err - } - s.skipWhiteSpace() - if !s.equalChar(':') { - return errors.ErrExpected("colon after object key", s.totalOffset()) - } - s.cursor++ - v := unsafe_New(d.valueType) - if err := d.valueDecoder.DecodeStream(s, depth, v); err != nil { - return err - } - d.mapassign(d.mapType, mapValue, k, v) - s.skipWhiteSpace() - if s.equalChar('}') { - **(**unsafe.Pointer)(unsafe.Pointer(&p)) = mapValue - s.cursor++ - return nil - } - if !s.equalChar(',') { - return errors.ErrExpected("comma after object value", s.totalOffset()) - } - } -} - -func (d *mapDecoder) Decode(ctx *RuntimeContext, cursor, depth int64, p unsafe.Pointer) (int64, error) { - buf := ctx.Buf - depth++ - if depth > maxDecodeNestingDepth { - return 0, errors.ErrExceededMaxDepth(buf[cursor], cursor) - } - - cursor = skipWhiteSpace(buf, cursor) - buflen := int64(len(buf)) - if buflen < 2 { - return 0, errors.ErrExpected("{} for map", cursor) - } - switch buf[cursor] { - case 'n': - if err := validateNull(buf, cursor); err != nil { - return 0, err - } - cursor += 4 - **(**unsafe.Pointer)(unsafe.Pointer(&p)) = nil - return cursor, nil - case '{': - default: - return 0, errors.ErrExpected("{ character for map value", cursor) - } - cursor++ - cursor = skipWhiteSpace(buf, cursor) - mapValue := *(*unsafe.Pointer)(p) - if mapValue == nil { - mapValue = makemap(d.mapType, 0) - } - if buf[cursor] == '}' { - **(**unsafe.Pointer)(unsafe.Pointer(&p)) = mapValue - cursor++ - return cursor, nil - } - for { - k := unsafe_New(d.keyType) - keyCursor, err := d.keyDecoder.Decode(ctx, cursor, depth, k) - if err != nil { - return 0, err - } - cursor = skipWhiteSpace(buf, keyCursor) - if buf[cursor] != ':' { - return 0, errors.ErrExpected("colon after object key", cursor) - } - cursor++ - v := unsafe_New(d.valueType) - valueCursor, err := d.valueDecoder.Decode(ctx, cursor, depth, v) - if err != nil { - return 0, err - } - d.mapassign(d.mapType, mapValue, k, v) - cursor = skipWhiteSpace(buf, valueCursor) - if buf[cursor] == '}' { - **(**unsafe.Pointer)(unsafe.Pointer(&p)) = mapValue - cursor++ - return cursor, nil - } - if buf[cursor] != ',' { - return 0, errors.ErrExpected("comma after object value", cursor) - } - cursor++ - } -} |