3 * (c) 2008-2009 Alexander Warg <warg@os.inf.tu-dresden.de>,
4 * Torsten Frenzel <frenzel@os.inf.tu-dresden.de>
5 * economic rights: Technische Universität Dresden (Germany)
7 * This file is part of TUD:OS and distributed under the terms of the
8 * GNU General Public License 2.
9 * Please see the COPYING-GPL-2 file for details.
11 * As a special exception, you may use this file as part of a free software
12 * library without restriction. Specifically, if other files instantiate
13 * templates or use macros or inline functions from this file, or you compile
14 * this file and link it with other files to produce an executable, this
15 * file does not by itself cause the resulting executable to be covered by
16 * the GNU General Public License. This exception does not however
17 * invalidate any other reasons why the executable file might be covered by
18 * the GNU General Public License.
27 template< bool flag, typename T, typename F >
34 template< typename T, typename F >
35 class Select< false, T, F >
43 template< typename T, typename U >
47 class B { char dummy[2]; };
54 exists = sizeof(test(make_T())) == sizeof(S),
55 two_way = exists && Conversion<U,T>::exists,
56 exists_2_way = two_way,
62 class Conversion<void, void>
65 enum { exists = 1, two_way = 1, exists_2_way = two_way, same_type = 1 };
68 template< typename T >
69 class Conversion<T, T>
72 enum { exists = 1, two_way = 1, exists_2_way = two_way, same_type = 1 };
75 template< typename T >
76 class Conversion<void, T>
79 enum { exists = 0, two_way = 0, exists_2_way = two_way, same_type = 0 };
82 template< typename T >
83 class Conversion<T, void>
86 enum { exists = 0, two_way = 0, exists_2_way = two_way, same_type = 0 };
98 template< typename U > class Pointer_traits
101 typedef Null_type Pointee;
102 enum { value = false };
105 template< typename U > class Pointer_traits< U* >
109 enum { value = true };
112 template< typename U > struct Ref_traits
114 enum { value = false };
118 template< typename U > struct Ref_traits<U&>
120 enum { value = true };
125 template< typename U > struct Add_ref { typedef U &Type; };
126 template< typename U > struct Add_ref<U&> { typedef U Type; };
128 template< typename U > struct PMF_traits { enum { value = false }; };
129 template< typename U, typename F > struct PMF_traits<U F::*>
130 { enum { value = true }; };
133 template< typename U > class Is_unsigned { public: enum { value = false }; };
134 template<> class Is_unsigned<unsigned> { public: enum { value = true }; };
135 template<> class Is_unsigned<unsigned char> {
136 public: enum { value = true };
138 template<> class Is_unsigned<unsigned short> {
139 public: enum { value = true };
141 template<> class Is_unsigned<unsigned long> {
142 public: enum { value = true };
144 template<> class Is_unsigned<unsigned long long> {
145 public: enum { value = true };
148 template< typename U > class Is_signed { public: enum { value = false }; };
149 template<> class Is_signed<signed char> { public: enum { value = true }; };
150 template<> class Is_signed<signed short> { public: enum { value = true }; };
151 template<> class Is_signed<signed> { public: enum { value = true }; };
152 template<> class Is_signed<signed long> { public: enum { value = true }; };
153 template<> class Is_signed<signed long long> {
154 public: enum { value = true };
157 template< typename U > class Is_int { public: enum { value = false }; };
158 template<> class Is_int< char > { public: enum { value = true }; };
159 template<> class Is_int< bool > { public: enum { value = true }; };
160 template<> class Is_int< wchar_t > { public: enum { value = true }; };
162 template< typename U > class Is_float { public: enum { value = false }; };
163 template<> class Is_float< float > { public: enum { value = true }; };
164 template<> class Is_float< double > { public: enum { value = true }; };
165 template<> class Is_float< long double > { public: enum { value = true }; };
167 template<typename T> class Const_traits
170 enum { value = false };
172 typedef const T Const_type;
175 template<typename T> class Const_traits<const T>
178 enum { value = true };
180 typedef const T Const_type;
184 template< typename T >
191 is_unsigned = TT::Is_unsigned<T>::value,
192 is_signed = TT::Is_signed<T>::value,
193 is_int = TT::Is_int<T>::value,
194 is_float = TT::Is_float<T>::value,
195 is_pointer = TT::Pointer_traits<T>::value,
196 is_pointer_to_member = TT::PMF_traits<T>::value,
197 is_reference = TT::Ref_traits<T>::value,
198 is_scalar = is_unsigned || is_signed || is_int || is_pointer
199 || is_pointer_to_member || is_reference,
200 is_fundamental = is_unsigned || is_signed || is_float
201 || Conversion<T, void>::same_type,
202 is_const = TT::Const_traits<T>::value,
205 (sizeof(T) >= sizeof(unsigned long)
206 ? sizeof(unsigned long)
207 : (sizeof(T) >= sizeof(unsigned)
209 : (sizeof(T) >= sizeof(short)
214 typedef typename Select<is_scalar, T, typename TT::Add_ref<typename TT::Const_traits<T>::Const_type>::Type>::Type Param_type;
215 typedef typename TT::Pointer_traits<T>::Pointee Pointee_type;
216 typedef typename TT::Ref_traits<T>::Referee Referee_type;
217 typedef typename TT::Const_traits<T>::Type Non_const_type;
218 typedef typename TT::Const_traits<T>::Const_type Const_type;
220 static unsigned long align(unsigned long a)
221 { return (a + (unsigned long)alignment - 1UL)
222 & ~((unsigned long)alignment - 1UL); }