diff options
Diffstat (limited to 'vendor/github.com/goccy/go-json/internal/decoder/uint.go')
-rw-r--r-- | vendor/github.com/goccy/go-json/internal/decoder/uint.go | 190 |
1 files changed, 0 insertions, 190 deletions
diff --git a/vendor/github.com/goccy/go-json/internal/decoder/uint.go b/vendor/github.com/goccy/go-json/internal/decoder/uint.go deleted file mode 100644 index a62c51492..000000000 --- a/vendor/github.com/goccy/go-json/internal/decoder/uint.go +++ /dev/null @@ -1,190 +0,0 @@ -package decoder - -import ( - "fmt" - "reflect" - "unsafe" - - "github.com/goccy/go-json/internal/errors" - "github.com/goccy/go-json/internal/runtime" -) - -type uintDecoder struct { - typ *runtime.Type - kind reflect.Kind - op func(unsafe.Pointer, uint64) - structName string - fieldName string -} - -func newUintDecoder(typ *runtime.Type, structName, fieldName string, op func(unsafe.Pointer, uint64)) *uintDecoder { - return &uintDecoder{ - typ: typ, - kind: typ.Kind(), - op: op, - structName: structName, - fieldName: fieldName, - } -} - -func (d *uintDecoder) typeError(buf []byte, offset int64) *errors.UnmarshalTypeError { - return &errors.UnmarshalTypeError{ - Value: fmt.Sprintf("number %s", string(buf)), - Type: runtime.RType2Type(d.typ), - Offset: offset, - } -} - -var ( - pow10u64 = [...]uint64{ - 1e00, 1e01, 1e02, 1e03, 1e04, 1e05, 1e06, 1e07, 1e08, 1e09, - 1e10, 1e11, 1e12, 1e13, 1e14, 1e15, 1e16, 1e17, 1e18, 1e19, - } - pow10u64Len = len(pow10u64) -) - -func (d *uintDecoder) parseUint(b []byte) (uint64, error) { - maxDigit := len(b) - if maxDigit > pow10u64Len { - return 0, fmt.Errorf("invalid length of number") - } - sum := uint64(0) - for i := 0; i < maxDigit; i++ { - c := uint64(b[i]) - 48 - digitValue := pow10u64[maxDigit-i-1] - sum += c * digitValue - } - return sum, nil -} - -func (d *uintDecoder) decodeStreamByte(s *Stream) ([]byte, error) { - for { - switch s.char() { - case ' ', '\n', '\t', '\r': - s.cursor++ - continue - case '0': - s.cursor++ - return numZeroBuf, nil - case '1', '2', '3', '4', '5', '6', '7', '8', '9': - start := s.cursor - for { - s.cursor++ - if numTable[s.char()] { - continue - } else if s.char() == nul { - if s.read() { - s.cursor-- // for retry current character - continue - } - } - break - } - num := s.buf[start:s.cursor] - return num, nil - case 'n': - if err := nullBytes(s); err != nil { - return nil, err - } - return nil, nil - case nul: - if s.read() { - continue - } - default: - return nil, d.typeError([]byte{s.char()}, s.totalOffset()) - } - break - } - return nil, errors.ErrUnexpectedEndOfJSON("number(unsigned integer)", s.totalOffset()) -} - -func (d *uintDecoder) decodeByte(buf []byte, cursor int64) ([]byte, int64, error) { - for { - switch buf[cursor] { - case ' ', '\n', '\t', '\r': - cursor++ - continue - case '0': - cursor++ - return numZeroBuf, cursor, nil - case '1', '2', '3', '4', '5', '6', '7', '8', '9': - start := cursor - cursor++ - for numTable[buf[cursor]] { - cursor++ - } - num := buf[start:cursor] - return num, cursor, nil - case 'n': - if err := validateNull(buf, cursor); err != nil { - return nil, 0, err - } - cursor += 4 - return nil, cursor, nil - default: - return nil, 0, d.typeError([]byte{buf[cursor]}, cursor) - } - } -} - -func (d *uintDecoder) DecodeStream(s *Stream, depth int64, p unsafe.Pointer) error { - bytes, err := d.decodeStreamByte(s) - if err != nil { - return err - } - if bytes == nil { - return nil - } - u64, err := d.parseUint(bytes) - if err != nil { - return d.typeError(bytes, s.totalOffset()) - } - switch d.kind { - case reflect.Uint8: - if (1 << 8) <= u64 { - return d.typeError(bytes, s.totalOffset()) - } - case reflect.Uint16: - if (1 << 16) <= u64 { - return d.typeError(bytes, s.totalOffset()) - } - case reflect.Uint32: - if (1 << 32) <= u64 { - return d.typeError(bytes, s.totalOffset()) - } - } - d.op(p, u64) - return nil -} - -func (d *uintDecoder) Decode(ctx *RuntimeContext, cursor, depth int64, p unsafe.Pointer) (int64, error) { - bytes, c, err := d.decodeByte(ctx.Buf, cursor) - if err != nil { - return 0, err - } - if bytes == nil { - return c, nil - } - cursor = c - u64, err := d.parseUint(bytes) - if err != nil { - return 0, d.typeError(bytes, cursor) - } - switch d.kind { - case reflect.Uint8: - if (1 << 8) <= u64 { - return 0, d.typeError(bytes, cursor) - } - case reflect.Uint16: - if (1 << 16) <= u64 { - return 0, d.typeError(bytes, cursor) - } - case reflect.Uint32: - if (1 << 32) <= u64 { - return 0, d.typeError(bytes, cursor) - } - } - d.op(p, u64) - return cursor, nil -} |