79 lines
2.1 KiB
C++
79 lines
2.1 KiB
C++
#ifndef regex_hh_INCLUDED
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#define regex_hh_INCLUDED
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#include "string.hh"
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#include "exception.hh"
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#ifdef KAK_USE_STDREGEX
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#include <regex>
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#else
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#include <boost/regex.hpp>
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#endif
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namespace Kakoune
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{
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struct regex_error : runtime_error
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{
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regex_error(StringView desc)
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: runtime_error{format("regex error: '{}'", desc)}
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{}
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};
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#ifdef KAK_USE_STDREGEX
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// Regex that keeps track of its string representation
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struct Regex : std::regex
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{
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Regex() = default;
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explicit Regex(StringView re, flag_type flags = ECMAScript) try
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: std::regex(re.begin(), re.end(), flags), m_str(re) {}
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catch (std::runtime_error& err) { throw regex_error(err.what()); }
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template<typename Iterator>
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Regex(Iterator begin, Iterator end, flag_type flags = ECMAScript) try
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: std::regex(begin, end, flags), m_str(begin, end) {}
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catch (std::runtime_error& err) { throw regex_error(err.what()); }
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bool empty() const { return m_str.empty(); }
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bool operator==(const Regex& other) const { return m_str == other.m_str; }
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bool operator!=(const Regex& other) const { return m_str != other.m_str; }
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const String& str() const { return m_str; }
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private:
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String m_str;
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};
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namespace regex_ns = std;
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#else
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struct Regex : boost::regex
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{
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Regex() = default;
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explicit Regex(StringView re, flag_type flags = ECMAScript) try
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: boost::regex(re.begin(), re.end(), flags) {}
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catch (std::runtime_error& err) { throw regex_error(err.what()); }
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template<typename Iterator>
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Regex(Iterator begin, Iterator end, flag_type flags = ECMAScript) try
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: boost::regex(begin, end, flags) {}
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catch (std::runtime_error& err) { throw regex_error(err.what()); }
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String str() const { auto s = boost::regex::str(); return {s.begin(), s.end()}; }
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};
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namespace regex_ns = boost;
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#endif
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template<typename Iterator>
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using RegexIterator = regex_ns::regex_iterator<Iterator>;
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template<typename Iterator>
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using MatchResults = regex_ns::match_results<Iterator>;
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String option_to_string(const Regex& re);
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void option_from_string(StringView str, Regex& re);
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}
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#endif // regex_hh_INCLUDED
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