external_libraries/yaml-cpp-0.3.0/src/regex.h

   1 #ifndef REGEX_H_62B23520_7C8E_11DE_8A39_0800200C9A66
   2 #define REGEX_H_62B23520_7C8E_11DE_8A39_0800200C9A66
   3
   4 #if defined(_MSC_VER) || (defined(__GNUC__) && (__GNUC__ == 3 && __GNUC_MINOR__ >= 4) || (__GNUC__ >= 4)) // GCC supports "pragma once" correctly since 3.4
   5 #pragma once
   6 #endif
   7
   8
   9 #include <vector>
  10 #include <string>
  11
  12 namespace YAML
  13 {
  14         class Stream;
  15
  16         enum REGEX_OP { REGEX_EMPTY, REGEX_MATCH, REGEX_RANGE, REGEX_OR, REGEX_AND, REGEX_NOT, REGEX_SEQ };
  17
  18         // simplified regular expressions
  19         // . Only straightforward matches (no repeated characters)
  20         // . Only matches from start of string
  21         class RegEx
  22         {
  23         public:
  24                 RegEx();
  25                 RegEx(char ch);
  26                 RegEx(char a, char z);
  27                 RegEx(const std::string& str, REGEX_OP op = REGEX_SEQ);
  28                 ~RegEx() {}
  29
  30                 friend RegEx operator ! (const RegEx& ex);
  31                 friend RegEx operator || (const RegEx& ex1, const RegEx& ex2);
  32                 friend RegEx operator && (const RegEx& ex1, const RegEx& ex2);
  33                 friend RegEx operator + (const RegEx& ex1, const RegEx& ex2);
  34
  35                 bool Matches(char ch) const;
  36                 bool Matches(const std::string& str) const;
  37                 bool Matches(const Stream& in) const;
  38                 template <typename Source> bool Matches(const Source& source) const;
  39
  40                 int Match(const std::string& str) const;
  41                 int Match(const Stream& in) const;
  42                 template <typename Source> int Match(const Source& source) const;
  43
  44         private:
  45                 RegEx(REGEX_OP op);
  46
  47                 template <typename Source> bool IsValidSource(const Source& source) const;
  48                 template <typename Source> int MatchUnchecked(const Source& source) const;
  49
  50                 template <typename Source> int MatchOpEmpty(const Source& source) const;
  51                 template <typename Source> int MatchOpMatch(const Source& source) const;
  52                 template <typename Source> int MatchOpRange(const Source& source) const;
  53                 template <typename Source> int MatchOpOr(const Source& source) const;
  54                 template <typename Source> int MatchOpAnd(const Source& source) const;
  55                 template <typename Source> int MatchOpNot(const Source& source) const;
  56                 template <typename Source> int MatchOpSeq(const Source& source) const;
  57
  58         private:
  59                 REGEX_OP m_op;
  60                 char m_a, m_z;
  61                 std::vector <RegEx> m_params;
  62         };
  63 }
  64
  65 #include "regeximpl.h"
  66
  67 #endif // REGEX_H_62B23520_7C8E_11DE_8A39_0800200C9A66