diff options
Diffstat (limited to 'vendor/github.com/goccy/go-json/internal/decoder/int.go')
| -rw-r--r-- | vendor/github.com/goccy/go-json/internal/decoder/int.go | 242 |
1 files changed, 0 insertions, 242 deletions
diff --git a/vendor/github.com/goccy/go-json/internal/decoder/int.go b/vendor/github.com/goccy/go-json/internal/decoder/int.go deleted file mode 100644 index 7edfb0411..000000000 --- a/vendor/github.com/goccy/go-json/internal/decoder/int.go +++ /dev/null @@ -1,242 +0,0 @@ -package decoder - -import ( - "fmt" - "reflect" - "unsafe" - - "github.com/goccy/go-json/internal/errors" - "github.com/goccy/go-json/internal/runtime" -) - -type intDecoder struct { - typ *runtime.Type - kind reflect.Kind - op func(unsafe.Pointer, int64) - structName string - fieldName string -} - -func newIntDecoder(typ *runtime.Type, structName, fieldName string, op func(unsafe.Pointer, int64)) *intDecoder { - return &intDecoder{ - typ: typ, - kind: typ.Kind(), - op: op, - structName: structName, - fieldName: fieldName, - } -} - -func (d *intDecoder) typeError(buf []byte, offset int64) *errors.UnmarshalTypeError { - return &errors.UnmarshalTypeError{ - Value: fmt.Sprintf("number %s", string(buf)), - Type: runtime.RType2Type(d.typ), - Struct: d.structName, - Field: d.fieldName, - Offset: offset, - } -} - -var ( - pow10i64 = [...]int64{ - 1e00, 1e01, 1e02, 1e03, 1e04, 1e05, 1e06, 1e07, 1e08, 1e09, - 1e10, 1e11, 1e12, 1e13, 1e14, 1e15, 1e16, 1e17, 1e18, - } - pow10i64Len = len(pow10i64) -) - -func (d *intDecoder) parseInt(b []byte) (int64, error) { - isNegative := false - if b[0] == '-' { - b = b[1:] - isNegative = true - } - maxDigit := len(b) - if maxDigit > pow10i64Len { - return 0, fmt.Errorf("invalid length of number") - } - sum := int64(0) - for i := 0; i < maxDigit; i++ { - c := int64(b[i]) - 48 - digitValue := pow10i64[maxDigit-i-1] - sum += c * digitValue - } - if isNegative { - return -1 * sum, nil - } - return sum, nil -} - -var ( - numTable = [256]bool{ - '0': true, - '1': true, - '2': true, - '3': true, - '4': true, - '5': true, - '6': true, - '7': true, - '8': true, - '9': true, - } -) - -var ( - numZeroBuf = []byte{'0'} -) - -func (d *intDecoder) decodeStreamByte(s *Stream) ([]byte, error) { - for { - switch s.char() { - case ' ', '\n', '\t', '\r': - s.cursor++ - continue - case '-': - 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] - if len(num) < 2 { - goto ERROR - } - return num, nil - 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 - } - goto ERROR - default: - return nil, d.typeError([]byte{s.char()}, s.totalOffset()) - } - } -ERROR: - return nil, errors.ErrUnexpectedEndOfJSON("number(integer)", s.totalOffset()) -} - -func (d *intDecoder) decodeByte(buf []byte, cursor int64) ([]byte, int64, error) { - b := (*sliceHeader)(unsafe.Pointer(&buf)).data - for { - switch char(b, 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[char(b, 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{char(b, cursor)}, cursor) - } - } -} - -func (d *intDecoder) DecodeStream(s *Stream, depth int64, p unsafe.Pointer) error { - bytes, err := d.decodeStreamByte(s) - if err != nil { - return err - } - if bytes == nil { - return nil - } - i64, err := d.parseInt(bytes) - if err != nil { - return d.typeError(bytes, s.totalOffset()) - } - switch d.kind { - case reflect.Int8: - if i64 <= -1*(1<<7) || (1<<7) <= i64 { - return d.typeError(bytes, s.totalOffset()) - } - case reflect.Int16: - if i64 <= -1*(1<<15) || (1<<15) <= i64 { - return d.typeError(bytes, s.totalOffset()) - } - case reflect.Int32: - if i64 <= -1*(1<<31) || (1<<31) <= i64 { - return d.typeError(bytes, s.totalOffset()) - } - } - d.op(p, i64) - s.reset() - return nil -} - -func (d *intDecoder) 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 - - i64, err := d.parseInt(bytes) - if err != nil { - return 0, d.typeError(bytes, cursor) - } - switch d.kind { - case reflect.Int8: - if i64 <= -1*(1<<7) || (1<<7) <= i64 { - return 0, d.typeError(bytes, cursor) - } - case reflect.Int16: - if i64 <= -1*(1<<15) || (1<<15) <= i64 { - return 0, d.typeError(bytes, cursor) - } - case reflect.Int32: - if i64 <= -1*(1<<31) || (1<<31) <= i64 { - return 0, d.typeError(bytes, cursor) - } - } - d.op(p, i64) - return cursor, nil -} |