mirror of https://github.com/goccy/go-json.git
74 lines
1.6 KiB
Go
74 lines
1.6 KiB
Go
package json
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import (
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"unsafe"
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)
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type unmarshalJSONDecoder struct {
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typ *rtype
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isDoublePointer bool
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}
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func newUnmarshalJSONDecoder(typ *rtype) *unmarshalJSONDecoder {
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return &unmarshalJSONDecoder{typ: typ}
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}
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func (d *unmarshalJSONDecoder) decodeStream(s *stream, p unsafe.Pointer) error {
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s.skipWhiteSpace()
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start := s.cursor
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if err := s.skipValue(); err != nil {
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return err
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}
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src := s.buf[start:s.cursor]
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if d.isDoublePointer {
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newptr := unsafe_New(d.typ.Elem())
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v := *(*interface{})(unsafe.Pointer(&interfaceHeader{
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typ: d.typ,
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ptr: newptr,
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}))
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if err := v.(Unmarshaler).UnmarshalJSON(src); err != nil {
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return err
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}
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*(*unsafe.Pointer)(p) = newptr
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} else {
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v := *(*interface{})(unsafe.Pointer(&interfaceHeader{
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typ: d.typ,
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ptr: p,
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}))
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if err := v.(Unmarshaler).UnmarshalJSON(src); err != nil {
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return err
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}
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}
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return nil
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}
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func (d *unmarshalJSONDecoder) decode(buf []byte, cursor int64, p unsafe.Pointer) (int64, error) {
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cursor = skipWhiteSpace(buf, cursor)
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start := cursor
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end, err := skipValue(buf, cursor)
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if err != nil {
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return 0, err
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}
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src := buf[start:end]
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if d.isDoublePointer {
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newptr := unsafe_New(d.typ.Elem())
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v := *(*interface{})(unsafe.Pointer(&interfaceHeader{
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typ: d.typ,
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ptr: newptr,
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}))
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if err := v.(Unmarshaler).UnmarshalJSON(src); err != nil {
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return 0, err
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}
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*(*unsafe.Pointer)(p) = newptr
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} else {
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v := *(*interface{})(unsafe.Pointer(&interfaceHeader{
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typ: d.typ,
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ptr: p,
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}))
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if err := v.(Unmarshaler).UnmarshalJSON(src); err != nil {
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return 0, err
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}
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}
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return end, nil
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}
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