1#ifndef MARISA_ALPHA_QUERY_H_
2#define MARISA_ALPHA_QUERY_H_
3
4#include <string>
5
6#include "base.h"
7
8namespace marisa_alpha {
9
10class Query {
11 public:
12  Query(const char *ptr, std::size_t length) : ptr_(ptr), length_(length) {}
13  Query(const Query &query) : ptr_(query.ptr_), length_(query.length_) {}
14
15  void insert(std::string *str) const {
16    str->insert(0, ptr_, length_);
17  }
18
19  UInt8 operator[](std::size_t i) const {
20    MARISA_ALPHA_DEBUG_IF(i >= length_, MARISA_ALPHA_PARAM_ERROR);
21    return ptr_[i];
22  }
23  bool ends_at(std::size_t i) const {
24    MARISA_ALPHA_DEBUG_IF(i > length_, MARISA_ALPHA_PARAM_ERROR);
25    return i == length_;
26  }
27
28 private:
29  const char *ptr_;
30  std::size_t length_;
31
32  // Disallows assignment.
33  Query &operator=(const Query &query);
34};
35
36class CQuery {
37 public:
38  explicit CQuery(const char *str) : str_(str) {}
39  CQuery(const CQuery &query) : str_(query.str_) {}
40
41  void insert(std::string *str) const {
42    str->insert(0, str_);
43  }
44
45  UInt8 operator[](std::size_t i) const {
46    return str_[i];
47  }
48  bool ends_at(std::size_t i) const {
49    return str_[i] == '\0';
50  }
51
52 private:
53  const char *str_;
54
55  // Disallows assignment.
56  CQuery &operator=(const CQuery &);
57};
58
59}  // namespace marisa_alpha
60
61#endif  // MARISA_ALPHA_QUERY_H_
62