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|
package decoder
import (
"bytes"
"fmt"
"unsafe"
"github.com/goccy/go-json/internal/errors"
"github.com/goccy/go-json/internal/runtime"
)
type funcDecoder struct {
typ *runtime.Type
structName string
fieldName string
}
func newFuncDecoder(typ *runtime.Type, structName, fieldName string) *funcDecoder {
fnDecoder := &funcDecoder{typ, structName, fieldName}
return fnDecoder
}
func (d *funcDecoder) 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: "string",
Type: runtime.RType2Type(d.typ),
Offset: s.totalOffset(),
}
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 err := nullBytes(s); err != nil {
return err
}
*(*unsafe.Pointer)(p) = nil
return nil
case 't':
if err := trueBytes(s); err == nil {
return &errors.UnmarshalTypeError{
Value: "boolean",
Type: runtime.RType2Type(d.typ),
Offset: s.totalOffset(),
}
}
case 'f':
if err := falseBytes(s); err == nil {
return &errors.UnmarshalTypeError{
Value: "boolean",
Type: runtime.RType2Type(d.typ),
Offset: s.totalOffset(),
}
}
}
}
return errors.ErrInvalidBeginningOfValue(s.buf[s.cursor], s.totalOffset())
}
func (d *funcDecoder) 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: "string",
Type: runtime.RType2Type(d.typ),
Offset: start,
}
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
}
case 't':
if err := validateTrue(buf, start); err == nil {
return 0, &errors.UnmarshalTypeError{
Value: "boolean",
Type: runtime.RType2Type(d.typ),
Offset: start,
}
}
case 'f':
if err := validateFalse(buf, start); err == nil {
return 0, &errors.UnmarshalTypeError{
Value: "boolean",
Type: runtime.RType2Type(d.typ),
Offset: start,
}
}
}
}
return cursor, errors.ErrInvalidBeginningOfValue(buf[cursor], cursor)
}
func (d *funcDecoder) DecodePath(ctx *RuntimeContext, cursor, depth int64) ([][]byte, int64, error) {
return nil, 0, fmt.Errorf("json: func decoder does not support decode path")
}
|
