blob: b74610274330c77aca2f091c3358ef6bced3743f (
plain) (
blame)
1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
16
17
18
19
20
21
22
23
24
25
26
27
28
29
30
31
32
33
34
35
36
37
38
39
40
41
42
43
44
45
46
47
48
49
50
51
52
53
54
55
56
57
58
59
60
61
62
63
|
// Copyright Vespa.ai. Licensed under the terms of the Apache 2.0 license. See LICENSE in the project root.
#pragma once
/* Simple prefix syntax advanced query parser for Juniper debug/testing */
#include "query.h"
#include "latintokenizer.h"
#include <map>
#include <memory>
#include <string>
namespace juniper
{
struct IsPunctuation {
bool operator()(char c) {
if (c == '*' || c == '?')
return false;
return ispunct(static_cast<unsigned char>(c)) != 0;
}
};
using WildcardTokenizer = Fast_LatinTokenizer<Fast_IsSpace, IsPunctuation>;
class QueryParserQueryItem;
class QueryParser : public IQuery
{
private:
QueryParser(const QueryParser&);
QueryParser& operator= (const QueryParser&);
public:
QueryParser(const char* query_string);
virtual ~QueryParser();
bool Traverse(IQueryVisitor* v) const override;
bool UsefulIndex(const QueryItem* item) const override;
int ParseError() { return _parse_errno; }
private:
std::unique_ptr<QueryItem> ParseExpr();
std::unique_ptr<QueryParserQueryItem> ParseKeyword();
std::unique_ptr<QueryItem> ParseIndexTerm();
std::unique_ptr<QueryParserQueryItem> CheckPrefix(std::string& kw);
void next();
void trav(QueryItem*) const;
inline void setvisitor(IQueryVisitor* v) { _v = v; }
bool match(const char* s, bool required = false);
using Tokenizer = WildcardTokenizer;
Tokenizer _tokenizer;
std::map<std::string, int> _op_to_type;
const char* _query_string;
std::string _curtok;
IQueryVisitor* _v;
std::unique_ptr<QueryItem> _exp;
int _parse_errno;
bool _reached_end;
};
} // end namespace juniper
|
