aboutsummaryrefslogtreecommitdiffstats
path: root/contrib/libs/yaml-cpp/src/regex_yaml.h
blob: c70ab60dcc13719a9438f0684b9ce0237a61fc98 (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
64
65
66
67
68
69
70
71
72
73
74
75
76
77
78
79
80
81
82
83
84
85
86
87
88
#ifndef REGEX_H_62B23520_7C8E_11DE_8A39_0800200C9A66
#define REGEX_H_62B23520_7C8E_11DE_8A39_0800200C9A66

#if defined(_MSC_VER) ||                                            \
    (defined(__GNUC__) && (__GNUC__ == 3 && __GNUC_MINOR__ >= 4) || \
     (__GNUC__ >= 4))  // GCC supports "pragma once" correctly since 3.4
#pragma once
#endif

#include <string>
#include <vector>

#include "yaml-cpp/dll.h"

namespace YAML {
class Stream;

enum REGEX_OP {
  REGEX_EMPTY,
  REGEX_MATCH,
  REGEX_RANGE,
  REGEX_OR,
  REGEX_AND,
  REGEX_NOT,
  REGEX_SEQ
};

// simplified regular expressions
// . Only straightforward matches (no repeated characters)
// . Only matches from start of string
class YAML_CPP_API RegEx {
 public:
  RegEx();
  explicit RegEx(char ch);
  RegEx(char a, char z);
  RegEx(const std::string& str, REGEX_OP op = REGEX_SEQ);
  ~RegEx() = default;

  friend YAML_CPP_API RegEx operator!(const RegEx& ex);
  friend YAML_CPP_API RegEx operator|(const RegEx& ex1, const RegEx& ex2);
  friend YAML_CPP_API RegEx operator&(const RegEx& ex1, const RegEx& ex2);
  friend YAML_CPP_API RegEx operator+(const RegEx& ex1, const RegEx& ex2);

  bool Matches(char ch) const;
  bool Matches(const std::string& str) const;
  bool Matches(const Stream& in) const;
  template <typename Source>
  bool Matches(const Source& source) const;

  int Match(const std::string& str) const;
  int Match(const Stream& in) const;
  template <typename Source>
  int Match(const Source& source) const;

 private:
  explicit RegEx(REGEX_OP op);

  template <typename Source>
  bool IsValidSource(const Source& source) const;
  template <typename Source>
  int MatchUnchecked(const Source& source) const;

  template <typename Source>
  int MatchOpEmpty(const Source& source) const;
  template <typename Source>
  int MatchOpMatch(const Source& source) const;
  template <typename Source>
  int MatchOpRange(const Source& source) const;
  template <typename Source>
  int MatchOpOr(const Source& source) const;
  template <typename Source>
  int MatchOpAnd(const Source& source) const;
  template <typename Source>
  int MatchOpNot(const Source& source) const;
  template <typename Source>
  int MatchOpSeq(const Source& source) const;

 private:
  REGEX_OP m_op;
  char m_a{};
  char m_z{};
  std::vector<RegEx> m_params;
};
}  // namespace YAML

#include "regeximpl.h"

#endif  // REGEX_H_62B23520_7C8E_11DE_8A39_0800200C9A66