go-json/decode_bool.go

55 lines
1.3 KiB
Go

package json
import (
"errors"
"unsafe"
)
type boolDecoder struct{}
func newBoolDecoder() *boolDecoder {
return &boolDecoder{}
}
func (d *boolDecoder) decode(ctx *context, p uintptr) error {
ctx.skipWhiteSpace()
buf := ctx.buf
cursor := ctx.cursor
switch buf[cursor] {
case 't':
if cursor+3 >= ctx.buflen {
return errors.New("unexpected error. invalid bool character")
}
if buf[cursor+1] != 'r' {
return errors.New("unexpected error. invalid bool character")
}
if buf[cursor+2] != 'u' {
return errors.New("unexpected error. invalid bool character")
}
if buf[cursor+3] != 'e' {
return errors.New("unexpected error. invalid bool character")
}
ctx.cursor += 4
*(*bool)(unsafe.Pointer(p)) = true
case 'f':
if cursor+4 >= ctx.buflen {
return errors.New("unexpected error. invalid bool character")
}
if buf[cursor+1] != 'a' {
return errors.New("unexpected error. invalid bool character")
}
if buf[cursor+2] != 'l' {
return errors.New("unexpected error. invalid bool character")
}
if buf[cursor+3] != 's' {
return errors.New("unexpected error. invalid bool character")
}
if buf[cursor+4] != 'e' {
return errors.New("unexpected error. invalid bool character")
}
ctx.cursor += 5
*(*bool)(unsafe.Pointer(p)) = false
}
return nil
}