C++ (Cpp) good_text示例

示例#1

文件： bad_expression_test.cpp 项目： hoangphihung0604/boost

int test_main( int , char* [] )
{
   std::string bad_text(1024, ' ');
   std::string good_text(200, ' ');
   good_text.append("xyz");

   boost::smatch what;

   boost::regex e1("(.+)+xyz");

   BOOST_CHECK(boost::regex_search(good_text, what, e1));
   BOOST_CHECK_THROW(boost::regex_search(bad_text, what, e1), std::runtime_error);
   BOOST_CHECK(boost::regex_search(good_text, what, e1));

   BOOST_CHECK(boost::regex_match(good_text, what, e1));
   BOOST_CHECK_THROW(boost::regex_match(bad_text, what, e1), std::runtime_error);
   BOOST_CHECK(boost::regex_match(good_text, what, e1));

   boost::regex e2("abc|[[:space:]]+(xyz)?[[:space:]]+xyz");

   BOOST_CHECK(boost::regex_search(good_text, what, e2));
   BOOST_CHECK_THROW(boost::regex_search(bad_text, what, e2), std::runtime_error);
   BOOST_CHECK(boost::regex_search(good_text, what, e2));

   bad_text.assign((std::string::size_type)500000, 'a');
   e2.assign("aaa*@");
   BOOST_CHECK_THROW(boost::regex_search(bad_text, what, e2), std::runtime_error);
   good_text.assign((std::string::size_type)5000, 'a');
   BOOST_CHECK(0 == boost::regex_search(good_text, what, e2));

   return 0;
}

示例#2

文件： recursion_test.cpp 项目： Cabriter/abelkhan

int cpp_main( int , char* [] )
{
   // this regex will recurse twice for each whitespace character matched:
   boost::regex e("([[:space:]]|.)+");

   std::string bad_text(1024*1024*4, ' ');
   std::string good_text(200, ' ');

   boost::smatch what;

   //
   // Over and over: We want to make sure that after a stack error has
   // been triggered, that we can still conduct a good search and that
   // subsequent stack failures still do the right thing:
   //
   BOOST_CHECK(boost::regex_search(good_text, what, e));
   BOOST_CHECK_THROW(boost::regex_search(bad_text, what, e), std::runtime_error);
   BOOST_CHECK(boost::regex_search(good_text, what, e));
   BOOST_CHECK_THROW(boost::regex_search(bad_text, what, e), std::runtime_error);
   BOOST_CHECK(boost::regex_search(good_text, what, e));
   BOOST_CHECK_THROW(boost::regex_search(bad_text, what, e), std::runtime_error);
   BOOST_CHECK(boost::regex_search(good_text, what, e));
   BOOST_CHECK_THROW(boost::regex_search(bad_text, what, e), std::runtime_error);
   BOOST_CHECK(boost::regex_search(good_text, what, e));

   BOOST_CHECK(boost::regex_match(good_text, what, e));
   BOOST_CHECK_THROW(boost::regex_match(bad_text, what, e), std::runtime_error);
   BOOST_CHECK(boost::regex_match(good_text, what, e));
   BOOST_CHECK_THROW(boost::regex_match(bad_text, what, e), std::runtime_error);
   BOOST_CHECK(boost::regex_match(good_text, what, e));
   BOOST_CHECK_THROW(boost::regex_match(bad_text, what, e), std::runtime_error);
   BOOST_CHECK(boost::regex_match(good_text, what, e));
   BOOST_CHECK_THROW(boost::regex_match(bad_text, what, e), std::runtime_error);
   BOOST_CHECK(boost::regex_match(good_text, what, e));

   return 0;
}