llvm/libcxx/test/std/re/re.traits/value.pass.cpp

//===----------------------------------------------------------------------===//
//
// 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
//
//===----------------------------------------------------------------------===//

// <regex>

// template <class charT> struct regex_traits;

// int value(charT ch, int radix) const;

#include <regex>
#include <cassert>
#include "test_macros.h"

int main(int, char**)
{
    {
        std::regex_traits<char> t;

        for (char c = 0; c < '0'; ++c)
        {
            assert(t.value(c, 8) == -1);
            assert(t.value(c, 10) == -1);
            assert(t.value(c, 16) == -1);
        }
        for (char c = '0'; c < '8'; ++c)
        {
            assert(t.value(c, 8) == c - '0');
            assert(t.value(c, 10) == c - '0');
            assert(t.value(c, 16) == c - '0');
        }
        for (char c = '8'; c < ':'; ++c)
        {
            assert(t.value(c, 8) == -1);
            assert(t.value(c, 10) == c - '0');
            assert(t.value(c, 16) == c - '0');
        }
        for (char c = ':'; c < 'A'; ++c)
        {
            assert(t.value(c, 8) == -1);
            assert(t.value(c, 10) == -1);
            assert(t.value(c, 16) == -1);
        }
        for (char c = 'A'; c < 'G'; ++c)
        {
            assert(t.value(c, 8) == -1);
            assert(t.value(c, 10) == -1);
            assert(t.value(c, 16) == c - 'A' +10);
        }
        for (char c = 'G'; c < 'a'; ++c)
        {
            assert(t.value(c, 8) == -1);
            assert(t.value(c, 10) == -1);
            assert(t.value(c, 16) == -1);
        }
        for (char c = 'a'; c < 'g'; ++c)
        {
            assert(t.value(c, 8) == -1);
            assert(t.value(c, 10) == -1);
            assert(t.value(c, 16) == c - 'a' +10);
        }
        for (int c = 'g'; c < 256; ++c)
        {
            assert(t.value(char(c), 8) == -1);
            assert(t.value(char(c), 10) == -1);
            assert(t.value(char(c), 16) == -1);
        }
    }
#ifndef TEST_HAS_NO_WIDE_CHARACTERS
    {
        std::regex_traits<wchar_t> t;

        for (wchar_t c = 0; c < '0'; ++c)
        {
            assert(t.value(c, 8) == -1);
            assert(t.value(c, 10) == -1);
            assert(t.value(c, 16) == -1);
        }
        for (wchar_t c = '0'; c < '8'; ++c)
        {
            assert(t.value(c, 8) ==  static_cast<int>(c - '0'));
            assert(t.value(c, 10) == static_cast<int>(c - '0'));
            assert(t.value(c, 16) == static_cast<int>(c - '0'));
        }
        for (wchar_t c = '8'; c < ':'; ++c)
        {
            assert(t.value(c, 8) == -1);
            assert(t.value(c, 10) == static_cast<int>(c - '0'));
            assert(t.value(c, 16) == static_cast<int>(c - '0'));
        }
        for (wchar_t c = ':'; c < 'A'; ++c)
        {
            assert(t.value(c, 8) == -1);
            assert(t.value(c, 10) == -1);
            assert(t.value(c, 16) == -1);
        }
        for (wchar_t c = 'A'; c < 'G'; ++c)
        {
            assert(t.value(c, 8) == -1);
            assert(t.value(c, 10) == -1);
            assert(t.value(c, 16) == static_cast<int>(c - 'A' +10));
        }
        for (wchar_t c = 'G'; c < 'a'; ++c)
        {
            assert(t.value(c, 8) == -1);
            assert(t.value(c, 10) == -1);
            assert(t.value(c, 16) == -1);
        }
        for (wchar_t c = 'a'; c < 'g'; ++c)
        {
            assert(t.value(c, 8) == -1);
            assert(t.value(c, 10) == -1);
            assert(t.value(c, 16) == static_cast<int>(c - 'a' +10));
        }
        for (wchar_t c = 'g'; c < 0xFFFF; ++c)
        {
            assert(t.value(c, 8) == -1);
            assert(t.value(c, 10) == -1);
            assert(t.value(c, 16) == -1);
        }
    }
#endif

  return 0;
}