boost/libs/spirit/test/x3/int.hpp

/*=============================================================================
    Copyright (c) 2001-2012 Joel de Guzman
    Copyright (c) 2001-2011 Hartmut Kaiser
    Copyright (c) 2011      Bryce Lelbach

    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_0.txt)
=============================================================================*/
#if !defined(BOOST_SPIRIT_TEST_X3_INT_HPP)
#define BOOST_SPIRIT_TEST_X3_INT_HPP

#include <climits>
#include <boost/detail/lightweight_test.hpp>
#include <boost/spirit/home/x3/numeric/int.hpp>
#include "test.hpp"

///////////////////////////////////////////////////////////////////////////////
//
//  *** BEWARE PLATFORM DEPENDENT!!! ***
//  *** The following assumes 32 bit or 64 bit integers and 64 bit long longs.
//  *** Modify these constant strings when appropriate.
//
///////////////////////////////////////////////////////////////////////////////

    static_assert(sizeof(long long) == 8, "unexpected long long size");

#if INT_MAX != LLONG_MAX
    static_assert(sizeof(int) == 4, "unexpected int size");
    char const* max_int = "2147483647";
    char const* int_overflow = "2147483648";
    char const* min_int = "-2147483648";
    char const* int_underflow = "-2147483649";
#else
    static_assert(sizeof(int) == 8, "unexpected int size");
    char const* max_int = "9223372036854775807";
    char const* int_overflow = "9223372036854775808";
    char const* min_int = "-9223372036854775808";
    char const* int_underflow = "-9223372036854775809";
#endif

    char const* max_long_long = "9223372036854775807";
    char const* long_long_overflow = "9223372036854775808";
    char const* min_long_long = "-9223372036854775808";
    char const* long_long_underflow = "-9223372036854775809";

///////////////////////////////////////////////////////////////////////////////
// A custom int type
struct custom_int
{
    int n;
    custom_int() : n(0) {}
    explicit custom_int(int n_) : n(n_) {}
    custom_int& operator=(int n_) { n = n_; return *this; }
    friend bool operator==(custom_int a, custom_int b) { return a.n == b.n; }
    friend bool operator==(custom_int a, int b) { return a.n == b; }
    friend custom_int operator*(custom_int a, custom_int b) { return custom_int(a.n * b.n); }
    friend custom_int operator+(custom_int a, custom_int b) { return custom_int(a.n + b.n); }
    friend custom_int operator-(custom_int a, custom_int b) { return custom_int(a.n - b.n); }
};

#endif