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llvm-project/libcxx/test/std/re/re.traits/lookup_classname.pass.cpp

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//===----------------------------------------------------------------------===//
//
// Part of the LLVM Project, under the Apache License v2.0 with LLVM Exceptions.
// See https://llvm.org/LICENSE.txt for license information.
// SPDX-License-Identifier: Apache-2.0 WITH LLVM-exception
//
//===----------------------------------------------------------------------===//
// XFAIL: LIBCXX-WINDOWS-FIXME
// <regex>
// template <class charT> struct regex_traits;
// template <class ForwardIterator>
// char_class_type
// lookup_classname(ForwardIterator first, ForwardIterator last,
// bool icase = false) const;
#include <regex>
#include <cassert>
#include "test_macros.h"
#include "test_iterators.h"
template <class char_type>
void
test(const char_type* A,
typename std::regex_traits<char_type>::char_class_type expected,
bool icase = false)
{
typedef typename std::regex_traits<char_type>::char_class_type char_class_type;
std::regex_traits<char_type> t;
typedef forward_iterator<const char_type*> F;
char_class_type result = t.lookup_classname(F(A), F(A + t.length(A)), icase);
assert(result == expected);
}
template <class char_type>
void
test_w(const char_type* A,
typename std::regex_traits<char_type>::char_class_type expected,
bool icase = false)
{
typedef typename std::regex_traits<char_type>::char_class_type char_class_type;
std::regex_traits<char_type> t;
typedef forward_iterator<const char_type*> F;
char_class_type result = t.lookup_classname(F(A), F(A + t.length(A)), icase);
assert((result & expected) == expected);
LIBCPP_ASSERT((expected | std::regex_traits<char_type>::__regex_word) == result);
const bool matches_underscore = t.isctype('_', result);
if (result != expected)
assert(matches_underscore && "expected to match underscore");
else
assert(!matches_underscore && "should not match underscore");
}
int main(int, char**)
{
// if __regex_word is not distinct from all the classes, bad things happen
// See https://llvm.org/PR26476 for an example.
LIBCPP_ASSERT((std::ctype_base::space & std::regex_traits<char>::__regex_word) == 0);
LIBCPP_ASSERT((std::ctype_base::print & std::regex_traits<char>::__regex_word) == 0);
LIBCPP_ASSERT((std::ctype_base::cntrl & std::regex_traits<char>::__regex_word) == 0);
LIBCPP_ASSERT((std::ctype_base::upper & std::regex_traits<char>::__regex_word) == 0);
LIBCPP_ASSERT((std::ctype_base::lower & std::regex_traits<char>::__regex_word) == 0);
LIBCPP_ASSERT((std::ctype_base::alpha & std::regex_traits<char>::__regex_word) == 0);
LIBCPP_ASSERT((std::ctype_base::digit & std::regex_traits<char>::__regex_word) == 0);
LIBCPP_ASSERT((std::ctype_base::punct & std::regex_traits<char>::__regex_word) == 0);
LIBCPP_ASSERT((std::ctype_base::xdigit & std::regex_traits<char>::__regex_word) == 0);
LIBCPP_ASSERT((std::ctype_base::blank & std::regex_traits<char>::__regex_word) == 0);
test("d", std::ctype_base::digit);
test("D", std::ctype_base::digit);
test("d", std::ctype_base::digit, true);
test("D", std::ctype_base::digit, true);
test_w("w", std::ctype_base::alnum
| std::ctype_base::upper | std::ctype_base::lower);
test_w("W", std::ctype_base::alnum
| std::ctype_base::upper | std::ctype_base::lower);
test_w("w", std::ctype_base::alnum
| std::ctype_base::upper | std::ctype_base::lower, true);
test_w("W", std::ctype_base::alnum
| std::ctype_base::upper | std::ctype_base::lower, true);
test("s", std::ctype_base::space);
test("S", std::ctype_base::space);
test("s", std::ctype_base::space, true);
test("S", std::ctype_base::space, true);
test("alnum", std::ctype_base::alnum);
test("AlNum", std::ctype_base::alnum);
test("alnum", std::ctype_base::alnum, true);
test("AlNum", std::ctype_base::alnum, true);
test("alpha", std::ctype_base::alpha);
test("Alpha", std::ctype_base::alpha);
test("alpha", std::ctype_base::alpha, true);
test("Alpha", std::ctype_base::alpha, true);
test("blank", std::ctype_base::blank);
test("Blank", std::ctype_base::blank);
test("blank", std::ctype_base::blank, true);
test("Blank", std::ctype_base::blank, true);
test("cntrl", std::ctype_base::cntrl);
test("Cntrl", std::ctype_base::cntrl);
test("cntrl", std::ctype_base::cntrl, true);
test("Cntrl", std::ctype_base::cntrl, true);
test("digit", std::ctype_base::digit);
test("Digit", std::ctype_base::digit);
test("digit", std::ctype_base::digit, true);
test("Digit", std::ctype_base::digit, true);
test("digit", std::ctype_base::digit);
test("DIGIT", std::ctype_base::digit);
test("digit", std::ctype_base::digit, true);
test("Digit", std::ctype_base::digit, true);
test("graph", std::ctype_base::graph);
test("GRAPH", std::ctype_base::graph);
test("graph", std::ctype_base::graph, true);
test("Graph", std::ctype_base::graph, true);
test("lower", std::ctype_base::lower);
test("LOWER", std::ctype_base::lower);
test("lower", std::ctype_base::lower | std::ctype_base::alpha, true);
test("Lower", std::ctype_base::lower | std::ctype_base::alpha, true);
test("print", std::ctype_base::print);
test("PRINT", std::ctype_base::print);
test("print", std::ctype_base::print, true);
test("Print", std::ctype_base::print, true);
test("punct", std::ctype_base::punct);
test("PUNCT", std::ctype_base::punct);
test("punct", std::ctype_base::punct, true);
test("Punct", std::ctype_base::punct, true);
test("space", std::ctype_base::space);
test("SPACE", std::ctype_base::space);
test("space", std::ctype_base::space, true);
test("Space", std::ctype_base::space, true);
test("upper", std::ctype_base::upper);
test("UPPER", std::ctype_base::upper);
test("upper", std::ctype_base::upper | std::ctype_base::alpha, true);
test("Upper", std::ctype_base::upper | std::ctype_base::alpha, true);
test("xdigit", std::ctype_base::xdigit);
test("XDIGIT", std::ctype_base::xdigit);
test("xdigit", std::ctype_base::xdigit, true);
test("Xdigit", std::ctype_base::xdigit, true);
test("dig", std::ctype_base::mask());
test("", std::ctype_base::mask());
test("digits", std::ctype_base::mask());
test(L"d", std::ctype_base::digit);
test(L"D", std::ctype_base::digit);
test(L"d", std::ctype_base::digit, true);
test(L"D", std::ctype_base::digit, true);
test_w(L"w", std::ctype_base::alnum
| std::ctype_base::upper | std::ctype_base::lower);
test_w(L"W", std::ctype_base::alnum
| std::ctype_base::upper | std::ctype_base::lower);
test_w(L"w", std::ctype_base::alnum
| std::ctype_base::upper | std::ctype_base::lower, true);
test_w(L"W", std::ctype_base::alnum
| std::ctype_base::upper | std::ctype_base::lower, true);
test(L"s", std::ctype_base::space);
test(L"S", std::ctype_base::space);
test(L"s", std::ctype_base::space, true);
test(L"S", std::ctype_base::space, true);
test(L"alnum", std::ctype_base::alnum);
test(L"AlNum", std::ctype_base::alnum);
test(L"alnum", std::ctype_base::alnum, true);
test(L"AlNum", std::ctype_base::alnum, true);
test(L"alpha", std::ctype_base::alpha);
test(L"Alpha", std::ctype_base::alpha);
test(L"alpha", std::ctype_base::alpha, true);
test(L"Alpha", std::ctype_base::alpha, true);
test(L"blank", std::ctype_base::blank);
test(L"Blank", std::ctype_base::blank);
test(L"blank", std::ctype_base::blank, true);
test(L"Blank", std::ctype_base::blank, true);
test(L"cntrl", std::ctype_base::cntrl);
test(L"Cntrl", std::ctype_base::cntrl);
test(L"cntrl", std::ctype_base::cntrl, true);
test(L"Cntrl", std::ctype_base::cntrl, true);
test(L"digit", std::ctype_base::digit);
test(L"Digit", std::ctype_base::digit);
test(L"digit", std::ctype_base::digit, true);
test(L"Digit", std::ctype_base::digit, true);
test(L"digit", std::ctype_base::digit);
test(L"DIGIT", std::ctype_base::digit);
test(L"digit", std::ctype_base::digit, true);
test(L"Digit", std::ctype_base::digit, true);
test(L"graph", std::ctype_base::graph);
test(L"GRAPH", std::ctype_base::graph);
test(L"graph", std::ctype_base::graph, true);
test(L"Graph", std::ctype_base::graph, true);
test(L"lower", std::ctype_base::lower);
test(L"LOWER", std::ctype_base::lower);
test(L"lower", std::ctype_base::lower | std::ctype_base::alpha, true);
test(L"Lower", std::ctype_base::lower | std::ctype_base::alpha, true);
test(L"print", std::ctype_base::print);
test(L"PRINT", std::ctype_base::print);
test(L"print", std::ctype_base::print, true);
test(L"Print", std::ctype_base::print, true);
test(L"punct", std::ctype_base::punct);
test(L"PUNCT", std::ctype_base::punct);
test(L"punct", std::ctype_base::punct, true);
test(L"Punct", std::ctype_base::punct, true);
test(L"space", std::ctype_base::space);
test(L"SPACE", std::ctype_base::space);
test(L"space", std::ctype_base::space, true);
test(L"Space", std::ctype_base::space, true);
test(L"upper", std::ctype_base::upper);
test(L"UPPER", std::ctype_base::upper);
test(L"upper", std::ctype_base::upper | std::ctype_base::alpha, true);
test(L"Upper", std::ctype_base::upper | std::ctype_base::alpha, true);
test(L"xdigit", std::ctype_base::xdigit);
test(L"XDIGIT", std::ctype_base::xdigit);
test(L"xdigit", std::ctype_base::xdigit, true);
test(L"Xdigit", std::ctype_base::xdigit, true);
test(L"dig", std::ctype_base::mask());
test(L"", std::ctype_base::mask());
test(L"digits", std::ctype_base::mask());
return 0;
}
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