go-json/decode_array.go

54 lines
1010 B
Go

package json
import (
"errors"
)
type arrayDecoder struct {
elemType *rtype
size uintptr
valueDecoder decoder
alen int
}
func newArrayDecoder(dec decoder, elemType *rtype, alen int) *arrayDecoder {
return &arrayDecoder{
valueDecoder: dec,
elemType: elemType,
size: elemType.Size(),
alen: alen,
}
}
func (d *arrayDecoder) decode(ctx *context, p uintptr) error {
buf := ctx.buf
buflen := ctx.buflen
cursor := ctx.cursor
for ; cursor < buflen; cursor++ {
switch buf[cursor] {
case ' ', '\n', '\t', '\r':
continue
case '[':
idx := 0
for {
ctx.cursor = cursor + 1
if err := d.valueDecoder.decode(ctx, p+uintptr(idx)*d.size); err != nil {
return err
}
cursor = ctx.skipWhiteSpace()
switch buf[cursor] {
case ']':
ctx.cursor++
return nil
case ',':
idx++
continue
default:
return errors.New("syntax error array")
}
}
}
}
return errors.New("unexpected error array")
}