//  Copyright (c) 2012 Robert Ramey
//
// 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)

#include <exception>
#include <cxxabi.h>
#include <cstdlib>   // EXIT_SUCCESS
#include <iostream>
#include <boost/integer.hpp> // int_t<bits>::fast

#include "../include/automatic.hpp" // bits
#include "../include/checked_result.hpp"
#include "../include/checked.hpp"

template<class T1, class T2>
bool test_checked_divide(
    T1 v1,
    T2 v2,
    const char *av1,
    const char *av2,
    char expected_result
){
    using namespace boost::numeric;

    std::cout
        << "testing  "
        << av1 << " / " << av2
        << std::endl;

    using result_type = typename boost::mpl::if_c<
        std::numeric_limits<T1>::is_signed
        || std::numeric_limits<T2>::is_signed,
        std::intmax_t,
        std::uintmax_t
    >::type;

    checked_result<result_type> result
        = checked::divide_automatic<result_type>(v1, v2);

    if(result.no_exception()
    && expected_result != '.'){
        std::cout
            << "failed to detect error in division "
            << std::hex << "0x" << result << "(" << std::dec << result << ")"
            << " != "<< av1 << " / " << av2
            << std::endl;
        result = checked::divide_automatic<result_type>(v1, v2);
        return false;
    }
    else
    if(! result.no_exception()
    && expected_result != 'x'){
        std::cout
            << "erroneously detected error "
            << std::hex << result <<  av1 << " / " << av2 << std::dec << std::endl;
        result = checked::divide_automatic<result_type>(v1, v2);
        return false;
    }
    return true; // correct result
}

#include "test.hpp"
#include "test_values.hpp"

// note: same test matrix as used in test_divide.  Here we test all combinations
// safe and unsafe integers.  in test_checked we test all combinations of
// integer primitives

const char *test_division_result[VALUE_ARRAY_SIZE] = {
//      0       0       0       0
//      01234567012345670123456701234567
//      01234567890123456789012345678901
/* 0*/ "................................",
/* 1*/ "................................",
/* 2*/ "................................",
/* 3*/ "................................",
/* 4*/ "................................",
/* 5*/ "................................",
/* 6*/ "................................",
/* 7*/ "................................",

/* 8*/ "................................",
/* 9*/ "................................",
/*10*/ "................................",
/*11*/ "................................",
/*12*/ "................................",
/*13*/ "................................",
/*14*/ "...x...x...x...x................",
/*15*/ "................................",

//      0       0       0       0
//      01234567012345670123456701234567
//      01234567890123456789012345678901
/*16*/ "................................",
/*17*/ "................................",
/*18*/ "................................",
/*19*/ "................................",
/*20*/ "................................",
/*21*/ "................................",
/*22*/ "................................",
/*23*/ "................................",

/*24*/ "................................",
/*25*/ "................................",
/*26*/ "................................",
/*27*/ "................................",
/*28*/ "................................",
/*29*/ "................................",
/*30*/ "xxxxxxxxxxxxxxxx................",
/*31*/ "xxxxxxxxxxxxxxxx................"
};

#define TEST_IMPL(v1, v2, result) \
    rval &= test_checked_divide(     \
        v1,                       \
        v2,                       \
        BOOST_PP_STRINGIZE(v1),   \
        BOOST_PP_STRINGIZE(v2),   \
        result                    \
    );
/**/

#define TESTX(value_index1, value_index2)          \
    (std::cout << value_index1 << ',' << value_index2 << ','); \
    TEST_IMPL(                                     \
        BOOST_PP_ARRAY_ELEM(value_index1, VALUES), \
        BOOST_PP_ARRAY_ELEM(value_index2, VALUES), \
        test_division_result[value_index1][value_index2] \
    )
/**/

int main(int argc, char *argv[]){
    bool rval = true;

    TEST_EACH_VALUE_PAIR
    std::cout << (rval ? "success!" : "failure") << std::endl;
    return ! rval ;
}