string_flg.pass.cpp [plain text]
#include <regex>
#include <cassert>
template <class String>
void
test(const String& p, std::regex_constants::syntax_option_type f, unsigned mc)
{
std::basic_regex<typename String::value_type> r(p, f);
assert(r.flags() == f);
assert(r.mark_count() == mc);
}
int main()
{
test(std::string("\\(a\\)"), std::regex_constants::basic, 1);
test(std::string("\\(a[bc]\\)"), std::regex_constants::basic, 1);
test(std::string("\\(a\\([bc]\\)\\)"), std::regex_constants::basic, 2);
test(std::string("(a([bc]))"), std::regex_constants::basic, 0);
test(std::string("\\(a\\)"), std::regex_constants::extended, 0);
test(std::string("\\(a[bc]\\)"), std::regex_constants::extended, 0);
test(std::string("\\(a\\([bc]\\)\\)"), std::regex_constants::extended, 0);
test(std::string("(a([bc]))"), std::regex_constants::extended, 2);
test(std::string("\\(a\\)"), std::regex_constants::ECMAScript, 0);
test(std::string("\\(a[bc]\\)"), std::regex_constants::ECMAScript, 0);
test(std::string("\\(a\\([bc]\\)\\)"), std::regex_constants::ECMAScript, 0);
test(std::string("(a([bc]))"), std::regex_constants::ECMAScript, 2);
test(std::string("\\(a\\)"), std::regex_constants::awk, 0);
test(std::string("\\(a[bc]\\)"), std::regex_constants::awk, 0);
test(std::string("\\(a\\([bc]\\)\\)"), std::regex_constants::awk, 0);
test(std::string("(a([bc]))"), std::regex_constants::awk, 2);
test(std::string("\\(a\\)"), std::regex_constants::grep, 1);
test(std::string("\\(a[bc]\\)"), std::regex_constants::grep, 1);
test(std::string("\\(a\\([bc]\\)\\)"), std::regex_constants::grep, 2);
test(std::string("(a([bc]))"), std::regex_constants::grep, 0);
test(std::string("\\(a\\)"), std::regex_constants::egrep, 0);
test(std::string("\\(a[bc]\\)"), std::regex_constants::egrep, 0);
test(std::string("\\(a\\([bc]\\)\\)"), std::regex_constants::egrep, 0);
test(std::string("(a([bc]))"), std::regex_constants::egrep, 2);
}