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///////////////////////////////////////////////////////////////
// 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_
//
#ifdef TEST_RE2
#include "performance.hpp"
#include <boost/scoped_ptr.hpp>
#include <re2.h>
using namespace re2;
struct re2_regex : public abstract_regex
{
private:
boost::scoped_ptr<RE2> pat;
public:
re2_regex() {}
~re2_regex(){}
virtual bool set_expression(const char* pp, bool isperl)
{
if(!isperl)
return false;
std::string s("(?m)");
s += pp;
pat.reset(new RE2(s));
return pat->ok();
}
virtual bool match_test(const char* text);
virtual unsigned find_all(const char* text);
virtual std::string name();
struct initializer
{
initializer()
{
re2_regex::register_instance(boost::shared_ptr<abstract_regex>(new re2_regex));
}
void do_nothing()const {}
};
static const initializer init;
};
const re2_regex::initializer re2_regex::init;
bool re2_regex::match_test(const char * text)
{
return RE2::FullMatch(text, *pat);
}
unsigned re2_regex::find_all(const char * text)
{
unsigned count = 0;
StringPiece input(text);
while(RE2::FindAndConsume(&input, *pat))
{
++count;
}
return count;
}
std::string re2_regex::name()
{
init.do_nothing();
return "RE2";
}
#endif
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