forked from mirrors/gotosocial
151 lines
No EOL
4 KiB
Go
151 lines
No EOL
4 KiB
Go
// +build amd64,go1.15,!go1.21
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/*
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* Copyright 2022 ByteDance Inc.
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*
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* Licensed under the Apache License, Version 2.0 (the "License");
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* you may not use this file except in compliance with the License.
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* You may obtain a copy of the License at
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*
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* http://www.apache.org/licenses/LICENSE-2.0
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*
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* Unless required by applicable law or agreed to in writing, software
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* distributed under the License is distributed on an "AS IS" BASIS,
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* WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
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* See the License for the specific language governing permissions and
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* limitations under the License.
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*/
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package ast
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import (
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`runtime`
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`unsafe`
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`github.com/bytedance/sonic/encoder`
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`github.com/bytedance/sonic/internal/native`
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`github.com/bytedance/sonic/internal/native/types`
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`github.com/bytedance/sonic/internal/rt`
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uq `github.com/bytedance/sonic/unquote`
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`github.com/chenzhuoyu/base64x`
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)
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var typeByte = rt.UnpackEface(byte(0)).Type
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//go:nocheckptr
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func quote(buf *[]byte, val string) {
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*buf = append(*buf, '"')
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if len(val) == 0 {
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*buf = append(*buf, '"')
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return
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}
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sp := rt.IndexChar(val, 0)
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nb := len(val)
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b := (*rt.GoSlice)(unsafe.Pointer(buf))
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// input buffer
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for nb > 0 {
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// output buffer
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dp := unsafe.Pointer(uintptr(b.Ptr) + uintptr(b.Len))
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dn := b.Cap - b.Len
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// call native.Quote, dn is byte count it outputs
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ret := native.Quote(sp, nb, dp, &dn, 0)
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// update *buf length
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b.Len += dn
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// no need more output
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if ret >= 0 {
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break
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}
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// double buf size
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*b = growslice(typeByte, *b, b.Cap*2)
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// ret is the complement of consumed input
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ret = ^ret
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// update input buffer
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nb -= ret
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sp = unsafe.Pointer(uintptr(sp) + uintptr(ret))
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}
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runtime.KeepAlive(buf)
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runtime.KeepAlive(sp)
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*buf = append(*buf, '"')
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}
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func unquote(src string) (string, types.ParsingError) {
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return uq.String(src)
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}
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func decodeBase64(src string) ([]byte, error) {
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return base64x.StdEncoding.DecodeString(src)
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}
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func encodeBase64(src []byte) string {
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return base64x.StdEncoding.EncodeToString(src)
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}
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func (self *Parser) decodeValue() (val types.JsonState) {
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sv := (*rt.GoString)(unsafe.Pointer(&self.s))
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self.p = native.Value(sv.Ptr, sv.Len, self.p, &val, 0)
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return
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}
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func (self *Parser) skip() (int, types.ParsingError) {
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fsm := types.NewStateMachine()
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start := native.SkipOne(&self.s, &self.p, fsm, 0)
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types.FreeStateMachine(fsm)
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if start < 0 {
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return self.p, types.ParsingError(-start)
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}
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return start, 0
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}
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func (self *Node) encodeInterface(buf *[]byte) error {
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//WARN: NOT compatible with json.Encoder
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return encoder.EncodeInto(buf, self.packAny(), 0)
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}
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func (self *Parser) skipFast() (int, types.ParsingError) {
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start := native.SkipOneFast(&self.s, &self.p)
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if start < 0 {
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return self.p, types.ParsingError(-start)
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}
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return start, 0
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}
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func (self *Parser) getByPath(path ...interface{}) (int, types.ParsingError) {
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fsm := types.NewStateMachine()
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start := native.GetByPath(&self.s, &self.p, &path, fsm)
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types.FreeStateMachine(fsm)
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runtime.KeepAlive(path)
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if start < 0 {
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return self.p, types.ParsingError(-start)
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}
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return start, 0
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}
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func (self *Searcher) GetByPath(path ...interface{}) (Node, error) {
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var err types.ParsingError
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var start int
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self.parser.p = 0
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start, err = self.parser.getByPath(path...)
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if err != 0 {
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// for compatibility with old version
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if err == types.ERR_NOT_FOUND {
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return Node{}, ErrNotExist
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}
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if err == types.ERR_UNSUPPORT_TYPE {
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panic("path must be either int(>=0) or string")
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}
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return Node{}, self.parser.syntaxError(err)
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}
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t := switchRawType(self.parser.s[start])
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if t == _V_NONE {
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return Node{}, self.parser.ExportError(err)
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}
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return newRawNode(self.parser.s[start:self.parser.p], t), nil
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} |