/usr/include/cxxtools/typetraits.h is in libcxxtools-dev 2.2.1-1.
This file is owned by root:root, with mode 0o644.
The actual contents of the file can be viewed below.
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* Copyright (C) 2005 Marc Boris Duerner
*
* This library is free software; you can redistribute it and/or
* modify it under the terms of the GNU Lesser General Public
* License as published by the Free Software Foundation; either
* version 2.1 of the License, or (at your option) any later version.
*
* As a special exception, you may use this file as part of a free
* software library without restriction. Specifically, if other files
* instantiate templates or use macros or inline functions from this
* file, or you compile this file and link it with other files to
* produce an executable, this file does not by itself cause the
* resulting executable to be covered by the GNU General Public
* License. This exception does not however invalidate any other
* reasons why the executable file might be covered by the GNU Library
* General Public License.
*
* This library is distributed in the hope that it will be useful,
* but WITHOUT ANY WARRANTY; without even the implied warranty of
* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
* Lesser General Public License for more details.
*
* You should have received a copy of the GNU Lesser General Public
* License along with this library; if not, write to the Free Software
* Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301 USA
*/
#ifndef cxxtools_TypeTraits_h
#define cxxtools_TypeTraits_h
#include <cxxtools/api.h>
#include <cxxtools/config.h>
#include <cstddef>
#include <stdint.h>
namespace cxxtools
{
template <typename T>
struct TypeTraitsBase {
typedef T Value;
typedef const T ConstValue;
typedef T& Reference;
typedef const T& ConstReference;
typedef T* Pointer;
typedef const T* ConstPointer;
};
/** @brief Type-traits for for non-const value types
Compile time type information (CTTI) is implemented in cxxtools by the
means of TypeTraits. A number of specialisations allows
compile type branching in gerneric code depending on the type.
*/
template <typename T>
struct TypeTraits : public TypeTraitsBase<T>
{
static const unsigned int isConst = 0;
static const unsigned int isPointer = 0;
static const unsigned int isReference = 0;
};
/** @brief Type-traits for for const value types
*/
template <typename T>
struct TypeTraits<const T> : public TypeTraitsBase<T>
{
static const unsigned int isConst = 1;
static const unsigned int isPointer = 0;
static const unsigned int isReference = 0;
};
/** @brief Type-traits for for non-const reference types
*/
template <typename T>
struct TypeTraits<T&> : public TypeTraitsBase<T>
{
static const unsigned int isConst = 0;
static const unsigned int isPointer = 0;
static const unsigned int isReference = 1;
};
/** @brief Type-traits for for const reference types
*/
template <typename T>
struct TypeTraits<const T&> : public TypeTraitsBase<T>
{
static const unsigned int isConst = 1;
static const unsigned int isPointer = 0;
static const unsigned int isReference = 1;
};
/** @brief Type-traits for for non-const pointer types
*/
template <typename T>
struct TypeTraits<T*> : public TypeTraitsBase<T>
{
static const unsigned int isConst = 0;
static const unsigned int isPointer = 1;
static const unsigned int isReference = 0;
};
/** @brief Type-traits for for const pointer types
*/
template <typename T>
struct TypeTraits<const T*> : public TypeTraitsBase<T>
{
static const unsigned int isConst = 1;
static const unsigned int isPointer = 1;
static const unsigned int isReference = 0;
};
/** @brief Type-traits for for fixed-size array types
*/
template <typename T, std::size_t N>
struct TypeTraits<T[N]> : public TypeTraitsBase<T>
{
static const unsigned int isConst = 0;
static const unsigned int isPointer = 1;
static const unsigned int isReference = 0;
};
/** @brief Type-traits for for void
*/
template <>
struct TypeTraits<void>
{
typedef void Value;
typedef void ConstType;
typedef void Reference;
typedef void ConstReference;
typedef void* Pointer;
typedef void* ConstPointer;
static const unsigned int isConst = 0;
static const unsigned int isPointer = 0;
static const unsigned int isReference = 0;
};
template <typename T>
struct IntTraits
{};
template <>
struct IntTraits<signed char>
{
typedef unsigned char Unsigned;
typedef signed char Signed;
};
template <>
struct IntTraits<unsigned char>
{
typedef unsigned char Unsigned;
typedef signed char Signed;
};
template <>
struct IntTraits<short>
{
typedef unsigned short Unsigned;
typedef signed short Signed;
};
template <>
struct IntTraits<unsigned short>
{
typedef unsigned short Unsigned;
typedef signed short Signed;
};
template <>
struct IntTraits<int>
{
typedef unsigned int Unsigned;
typedef signed int Signed;
};
template <>
struct IntTraits<unsigned int>
{
typedef unsigned int Unsigned;
typedef signed int Signed;
};
template <>
struct IntTraits<long>
{
typedef unsigned long Unsigned;
typedef signed long Signed;
};
template <>
struct IntTraits<unsigned long>
{
typedef unsigned long Unsigned;
typedef signed long Signed;
};
#ifdef HAVE_LONG_LONG
template <>
struct IntTraits<long long>
{
typedef unsigned long long Unsigned;
typedef signed long long Signed;
};
#endif
#ifdef HAVE_UNSIGNED_LONG_LONG
template <>
struct IntTraits<unsigned long long>
{
typedef unsigned long long Unsigned;
typedef signed long long Signed;
};
#endif
} // !namespace cxxtools
#endif
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