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// +build amd64,go1.16,!go1.22
/*
* Copyright 2022 ByteDance Inc.
*
* Licensed under the Apache License, Version 2.0 (the "License");
* you may not use this file except in compliance with the License.
* You may obtain a copy of the License at
*
* http://www.apache.org/licenses/LICENSE-2.0
*
* Unless required by applicable law or agreed to in writing, software
* distributed under the License is distributed on an "AS IS" BASIS,
* WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
* See the License for the specific language governing permissions and
* limitations under the License.
*/
package ast
import (
`runtime`
`unsafe`
`github.com/bytedance/sonic/encoder`
`github.com/bytedance/sonic/internal/native`
`github.com/bytedance/sonic/internal/native/types`
`github.com/bytedance/sonic/internal/rt`
uq `github.com/bytedance/sonic/unquote`
`github.com/chenzhuoyu/base64x`
)
var typeByte = rt.UnpackEface(byte(0)).Type
//go:nocheckptr
func quote(buf *[]byte, val string) {
*buf = append(*buf, '"')
if len(val) == 0 {
*buf = append(*buf, '"')
return
}
sp := rt.IndexChar(val, 0)
nb := len(val)
b := (*rt.GoSlice)(unsafe.Pointer(buf))
// input buffer
for nb > 0 {
// output buffer
dp := unsafe.Pointer(uintptr(b.Ptr) + uintptr(b.Len))
dn := b.Cap - b.Len
// call native.Quote, dn is byte count it outputs
ret := native.Quote(sp, nb, dp, &dn, 0)
// update *buf length
b.Len += dn
// no need more output
if ret >= 0 {
break
}
// double buf size
*b = growslice(typeByte, *b, b.Cap*2)
// ret is the complement of consumed input
ret = ^ret
// update input buffer
nb -= ret
sp = unsafe.Pointer(uintptr(sp) + uintptr(ret))
}
runtime.KeepAlive(buf)
runtime.KeepAlive(sp)
*buf = append(*buf, '"')
}
func unquote(src string) (string, types.ParsingError) {
return uq.String(src)
}
func decodeBase64(src string) ([]byte, error) {
return base64x.StdEncoding.DecodeString(src)
}
func encodeBase64(src []byte) string {
return base64x.StdEncoding.EncodeToString(src)
}
func (self *Parser) decodeValue() (val types.JsonState) {
sv := (*rt.GoString)(unsafe.Pointer(&self.s))
flag := types.F_USE_NUMBER
if self.dbuf != nil {
flag = 0
val.Dbuf = self.dbuf
val.Dcap = types.MaxDigitNums
}
self.p = native.Value(sv.Ptr, sv.Len, self.p, &val, uint64(flag))
return
}
func (self *Parser) skip() (int, types.ParsingError) {
fsm := types.NewStateMachine()
start := native.SkipOne(&self.s, &self.p, fsm, 0)
types.FreeStateMachine(fsm)
if start < 0 {
return self.p, types.ParsingError(-start)
}
return start, 0
}
func (self *Node) encodeInterface(buf *[]byte) error {
//WARN: NOT compatible with json.Encoder
return encoder.EncodeInto(buf, self.packAny(), 0)
}
func (self *Parser) skipFast() (int, types.ParsingError) {
start := native.SkipOneFast(&self.s, &self.p)
if start < 0 {
return self.p, types.ParsingError(-start)
}
return start, 0
}
func (self *Parser) getByPath(path ...interface{}) (int, types.ParsingError) {
fsm := types.NewStateMachine()
start := native.GetByPath(&self.s, &self.p, &path, fsm)
types.FreeStateMachine(fsm)
runtime.KeepAlive(path)
if start < 0 {
return self.p, types.ParsingError(-start)
}
return start, 0
}
func (self *Searcher) GetByPath(path ...interface{}) (Node, error) {
var err types.ParsingError
var start int
self.parser.p = 0
start, err = self.parser.getByPath(path...)
if err != 0 {
// for compatibility with old version
if err == types.ERR_NOT_FOUND {
return Node{}, ErrNotExist
}
if err == types.ERR_UNSUPPORT_TYPE {
panic("path must be either int(>=0) or string")
}
return Node{}, self.parser.syntaxError(err)
}
t := switchRawType(self.parser.s[start])
if t == _V_NONE {
return Node{}, self.parser.ExportError(err)
}
return newRawNode(self.parser.s[start:self.parser.p], t), nil
}
|
