mirror of
https://github.com/superseriousbusiness/gotosocial.git
synced 2024-11-28 19:31:36 +00:00
80 lines
2.3 KiB
Go
80 lines
2.3 KiB
Go
/*
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* Copyright 2021 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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`github.com/bytedance/sonic/internal/rt`
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`github.com/bytedance/sonic/internal/native/types`
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)
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type Searcher struct {
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parser Parser
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}
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func NewSearcher(str string) *Searcher {
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return &Searcher{
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parser: Parser{
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s: str,
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noLazy: false,
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},
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}
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}
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// GetByPathCopy search in depth from top json and returns a **Copied** json node at the path location
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func (self *Searcher) GetByPathCopy(path ...interface{}) (Node, error) {
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return self.getByPath(true, path...)
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}
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// GetByPathNoCopy search in depth from top json and returns a **Referenced** json node at the path location
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//
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// WARN: this search directly refer partial json from top json, which has faster speed,
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// may consumes more memory.
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func (self *Searcher) GetByPath(path ...interface{}) (Node, error) {
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return self.getByPath(false, path...)
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}
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func (self *Searcher) getByPath(copystring bool, 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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// copy string to reducing memory usage
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var raw string
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if copystring {
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raw = rt.Mem2Str([]byte(self.parser.s[start:self.parser.p]))
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} else {
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raw = self.parser.s[start:self.parser.p]
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}
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return newRawNode(raw, t), nil
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}
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