You can not select more than 25 topics
Topics must start with a letter or number, can include dashes ('-') and can be up to 35 characters long.
171 lines
6.9 KiB
171 lines
6.9 KiB
// Copyright (c) 2014, The Monero Project
|
|
//
|
|
// All rights reserved.
|
|
//
|
|
// Redistribution and use in source and binary forms, with or without modification, are
|
|
// permitted provided that the following conditions are met:
|
|
//
|
|
// 1. Redistributions of source code must retain the above copyright notice, this list of
|
|
// conditions and the following disclaimer.
|
|
//
|
|
// 2. Redistributions in binary form must reproduce the above copyright notice, this list
|
|
// of conditions and the following disclaimer in the documentation and/or other
|
|
// materials provided with the distribution.
|
|
//
|
|
// 3. Neither the name of the copyright holder nor the names of its contributors may be
|
|
// used to endorse or promote products derived from this software without specific
|
|
// prior written permission.
|
|
//
|
|
// THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS "AS IS" AND ANY
|
|
// EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED WARRANTIES OF
|
|
// MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL
|
|
// THE COPYRIGHT HOLDER OR CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL,
|
|
// SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO,
|
|
// PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS
|
|
// INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT,
|
|
// STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF
|
|
// THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
|
|
//
|
|
// Parts of this file are originally copyright (c) 2006-2013, Andrey N. Sabelnikov
|
|
|
|
#pragma once
|
|
|
|
#include "misc_language.h"
|
|
#include "portable_storage_base.h"
|
|
#include "warnings.h"
|
|
|
|
namespace epee
|
|
{
|
|
namespace serialization
|
|
{
|
|
#define ASSERT_AND_THROW_WRONG_CONVERSION() ASSERT_MES_AND_THROW("WRONG DATA CONVERSION: from type=" << typeid(from).name() << " to type " << typeid(to).name())
|
|
|
|
template<typename from_type, typename to_type>
|
|
void convert_int_to_uint(const from_type& from, to_type& to)
|
|
{
|
|
PUSH_WARNINGS
|
|
DISABLE_VS_WARNINGS(4018)
|
|
CHECK_AND_ASSERT_THROW_MES(from >=0, "unexpected int value with signed storage value less than 0, and unsigned receiver value");
|
|
DISABLE_GCC_AND_CLANG_WARNING(sign-compare)
|
|
CHECK_AND_ASSERT_THROW_MES(from <= std::numeric_limits<to_type>::max(), "int value overhead: try to set value " << from << " to type " << typeid(to_type).name() << " with max possible value = " << std::numeric_limits<to_type>::max());
|
|
to = static_cast<to_type>(from);
|
|
POP_WARNINGS
|
|
}
|
|
template<typename from_type, typename to_type>
|
|
void convert_int_to_int(const from_type& from, to_type& to)
|
|
{
|
|
CHECK_AND_ASSERT_THROW_MES(from >= boost::numeric::bounds<to_type>::lowest(), "int value overhead: try to set value " << from << " to type " << typeid(to_type).name() << " with lowest possible value = " << boost::numeric::bounds<to_type>::lowest());
|
|
PUSH_WARNINGS
|
|
DISABLE_CLANG_WARNING(tautological-constant-out-of-range-compare)
|
|
CHECK_AND_ASSERT_THROW_MES(from <= std::numeric_limits<to_type>::max(), "int value overhead: try to set value " << from << " to type " << typeid(to_type).name() << " with max possible value = " << std::numeric_limits<to_type>::max());
|
|
POP_WARNINGS
|
|
to = static_cast<to_type>(from);
|
|
}
|
|
template<typename from_type, typename to_type>
|
|
void convert_uint_to_any_int(const from_type& from, to_type& to)
|
|
{
|
|
PUSH_WARNINGS
|
|
DISABLE_VS_WARNINGS(4018)
|
|
DISABLE_CLANG_WARNING(tautological-constant-out-of-range-compare)
|
|
CHECK_AND_ASSERT_THROW_MES(from <= std::numeric_limits<to_type>::max(), "uint value overhead: try to set value " << from << " to type " << typeid(to_type).name() << " with max possible value = " << std::numeric_limits<to_type>::max());
|
|
to = static_cast<to_type>(from);
|
|
POP_WARNINGS
|
|
}
|
|
|
|
template<typename from_type, typename to_type, bool, bool> //is from signed, is from to signed
|
|
struct convert_to_signed_unsigned;
|
|
|
|
template<typename from_type, typename to_type>
|
|
struct convert_to_signed_unsigned<from_type, to_type, true, true>
|
|
{
|
|
static void convert(const from_type& from, to_type& to)
|
|
{//from signed to signed
|
|
convert_int_to_int(from, to);
|
|
}
|
|
};
|
|
|
|
template<typename from_type, typename to_type>
|
|
struct convert_to_signed_unsigned<from_type, to_type, true, false>
|
|
{
|
|
static void convert(const from_type& from, to_type& to)
|
|
{//from signed to unsigned
|
|
convert_int_to_uint(from, to);
|
|
}
|
|
};
|
|
|
|
template<typename from_type, typename to_type>
|
|
struct convert_to_signed_unsigned<from_type, to_type, false, true>
|
|
{
|
|
static void convert(const from_type& from, to_type& to)
|
|
{//from unsigned to signed
|
|
convert_uint_to_any_int(from, to);
|
|
}
|
|
};
|
|
|
|
template<typename from_type, typename to_type>
|
|
struct convert_to_signed_unsigned<from_type, to_type, false, false>
|
|
{
|
|
static void convert(const from_type& from, to_type& to)
|
|
{
|
|
//from unsigned to unsigned
|
|
convert_uint_to_any_int(from, to);
|
|
}
|
|
};
|
|
|
|
template<typename from_type, typename to_type, bool>
|
|
struct convert_to_integral;
|
|
|
|
template<typename from_type, typename to_type>
|
|
struct convert_to_integral<from_type, to_type, true>
|
|
{
|
|
static void convert(const from_type& from, to_type& to)
|
|
{
|
|
convert_to_signed_unsigned<from_type, to_type, std::is_signed<from_type>::value, std::is_signed<to_type>::value>::convert(from, to);
|
|
}
|
|
};
|
|
|
|
template<typename from_type, typename to_type>
|
|
struct convert_to_integral<from_type, to_type, false>
|
|
{
|
|
static void convert(const from_type& from, to_type& to)
|
|
{
|
|
ASSERT_AND_THROW_WRONG_CONVERSION();
|
|
}
|
|
};
|
|
|
|
template<class from_type, class to_type>
|
|
struct is_convertable: std::integral_constant<bool,
|
|
std::is_integral<to_type>::value &&
|
|
std::is_integral<from_type>::value &&
|
|
!std::is_same<from_type, bool>::value &&
|
|
!std::is_same<to_type, bool>::value > {};
|
|
|
|
template<typename from_type, typename to_type, bool>
|
|
struct convert_to_same;
|
|
|
|
template<typename from_type, typename to_type>
|
|
struct convert_to_same<from_type, to_type, true>
|
|
{
|
|
static void convert(const from_type& from, to_type& to)
|
|
{
|
|
to = from;
|
|
}
|
|
};
|
|
|
|
template<typename from_type, typename to_type>
|
|
struct convert_to_same<from_type, to_type, false>
|
|
{
|
|
static void convert(const from_type& from, to_type& to)
|
|
{
|
|
convert_to_integral<from_type, to_type, is_convertable<from_type, to_type>::value>::convert(from, to);// ASSERT_AND_THROW_WRONG_CONVERSION();
|
|
}
|
|
};
|
|
|
|
|
|
template<class from_type, class to_type>
|
|
void convert_t(const from_type& from, to_type& to)
|
|
{
|
|
convert_to_same<from_type, to_type, std::is_same<to_type, from_type>::value>::convert(from, to);
|
|
}
|
|
}
|
|
} |