89 lines
2.4 KiB
C++
89 lines
2.4 KiB
C++
#ifndef REGEX_H_62B23520_7C8E_11DE_8A39_0800200C9A66
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#define REGEX_H_62B23520_7C8E_11DE_8A39_0800200C9A66
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#if defined(_MSC_VER) || \
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(defined(__GNUC__) && (__GNUC__ == 3 && __GNUC_MINOR__ >= 4) || \
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(__GNUC__ >= 4)) // GCC supports "pragma once" correctly since 3.4
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#pragma once
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#endif
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#include <string>
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#include <vector>
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#include "yaml-cpp/dll.h"
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namespace YAML {
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class Stream;
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enum REGEX_OP {
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REGEX_EMPTY,
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REGEX_MATCH,
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REGEX_RANGE,
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REGEX_OR,
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REGEX_AND,
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REGEX_NOT,
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REGEX_SEQ
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};
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// simplified regular expressions
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// . Only straightforward matches (no repeated characters)
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// . Only matches from start of string
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class YAML_CPP_API RegEx {
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public:
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RegEx();
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explicit RegEx(char ch);
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RegEx(char a, char z);
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RegEx(const std::string& str, REGEX_OP op = REGEX_SEQ);
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~RegEx() = default;
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friend YAML_CPP_API RegEx operator!(const RegEx& ex);
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friend YAML_CPP_API RegEx operator|(const RegEx& ex1, const RegEx& ex2);
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friend YAML_CPP_API RegEx operator&(const RegEx& ex1, const RegEx& ex2);
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friend YAML_CPP_API RegEx operator+(const RegEx& ex1, const RegEx& ex2);
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bool Matches(char ch) const;
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bool Matches(const std::string& str) const;
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bool Matches(const Stream& in) const;
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template <typename Source>
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bool Matches(const Source& source) const;
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int Match(const std::string& str) const;
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int Match(const Stream& in) const;
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template <typename Source>
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int Match(const Source& source) const;
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private:
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explicit RegEx(REGEX_OP op);
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template <typename Source>
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bool IsValidSource(const Source& source) const;
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template <typename Source>
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int MatchUnchecked(const Source& source) const;
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template <typename Source>
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int MatchOpEmpty(const Source& source) const;
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template <typename Source>
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int MatchOpMatch(const Source& source) const;
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template <typename Source>
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int MatchOpRange(const Source& source) const;
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template <typename Source>
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int MatchOpOr(const Source& source) const;
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template <typename Source>
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int MatchOpAnd(const Source& source) const;
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template <typename Source>
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int MatchOpNot(const Source& source) const;
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template <typename Source>
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int MatchOpSeq(const Source& source) const;
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private:
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REGEX_OP m_op;
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char m_a{};
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char m_z{};
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std::vector<RegEx> m_params;
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};
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} // namespace YAML
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#include "regeximpl.h"
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#endif // REGEX_H_62B23520_7C8E_11DE_8A39_0800200C9A66
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