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Diffstat (limited to 'src/boost/libs/regex/performance/xpressive.cpp')
-rw-r--r-- | src/boost/libs/regex/performance/xpressive.cpp | 74 |
1 files changed, 74 insertions, 0 deletions
diff --git a/src/boost/libs/regex/performance/xpressive.cpp b/src/boost/libs/regex/performance/xpressive.cpp new file mode 100644 index 000000000..22b57cfcd --- /dev/null +++ b/src/boost/libs/regex/performance/xpressive.cpp @@ -0,0 +1,74 @@ +/////////////////////////////////////////////////////////////// +// Copyright 2015 John Maddock. Distributed under the Boost +// Software License, Version 1.0. (See accompanying file +// LICENSE_1_0.txt or copy at http://www.boost.org/LICENSE_1_ +// + +#include <boost/config.hpp> + +#include "performance.hpp" +#include <boost/xpressive/xpressive.hpp> + +using namespace boost::xpressive; + +struct xpressive_regex : public abstract_regex +{ +private: + cregex e; + cmatch what; +public: + virtual bool set_expression(const char* pe, bool isperl) + { + if(!isperl) + return false; + try + { + e = cregex::compile(pe, regex_constants::ECMAScript); + } + catch(const std::exception&) + { + return false; + } + return true; + } + virtual bool match_test(const char* text); + virtual unsigned find_all(const char* text); + virtual std::string name(); + + struct initializer + { + initializer() + { + xpressive_regex::register_instance(boost::shared_ptr<abstract_regex>(new xpressive_regex)); + } + void do_nothing()const {} + }; + static const initializer init; +}; + +const xpressive_regex::initializer xpressive_regex::init; + + +bool xpressive_regex::match_test(const char * text) +{ + return regex_match(text, what, e); +} + +unsigned xpressive_regex::find_all(const char * text) +{ + cregex_token_iterator i(text, text + std::strlen(text), e), j; + unsigned count = 0; + while(i != j) + { + ++i; + ++count; + } + return count; +} + +std::string xpressive_regex::name() +{ + init.do_nothing(); + return "boost::xpressive::cregex"; +} + |