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00048 #ifndef STLSOFT_INCL_STLSOFT_CONVERSION_HPP_PTR_CAST
00049 #define STLSOFT_INCL_STLSOFT_CONVERSION_HPP_PTR_CAST
00050
00051 #ifndef STLSOFT_DOCUMENTATION_SKIP_SECTION
00052 # define STLSOFT_VER_STLSOFT_CONVERSION_HPP_PTR_CAST_MAJOR 4
00053 # define STLSOFT_VER_STLSOFT_CONVERSION_HPP_PTR_CAST_MINOR 0
00054 # define STLSOFT_VER_STLSOFT_CONVERSION_HPP_PTR_CAST_REVISION 8
00055 # define STLSOFT_VER_STLSOFT_CONVERSION_HPP_PTR_CAST_EDIT 38
00056 #endif
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00074 #ifndef STLSOFT_INCL_STLSOFT_H_STLSOFT
00075 # include <stlsoft/stlsoft.h>
00076 #endif
00077 #ifndef STLSOFT_INCL_STLSOFT_META_HPP_BASE_TYPE_TRAITS
00078 # include <stlsoft/meta/base_type_traits.hpp>
00079 #endif
00080
00081 #ifndef STLSOFT_INCL_TYPEINFO
00082 # define STLSOFT_INCL_TYPEINFO
00083 # include <typeinfo>
00084 #endif
00085
00086
00087
00088
00089
00090 #ifndef _STLSOFT_NO_NAMESPACE
00091 namespace stlsoft
00092 {
00093 #endif
00094
00095
00096
00097
00098
00204 template <ss_typename_param_k Target>
00205 struct ptr_cast
00206 {
00207 public:
00209 typedef Target target_type;
00211 typedef ptr_cast<Target> class_type;
00213 typedef ss_typename_type_k stlsoft::base_type_traits<Target>::cv_type target_base_type;
00215 typedef target_base_type& reference_type;
00217 typedef target_base_type* pointer_type;
00218
00219 private:
00220 typedef ss_typename_type_k stlsoft::base_type_traits<Target>::base_type target_base_type_;
00221 static target_base_type_* manage_const(target_base_type_* p)
00222 {
00223 return p;
00224 }
00225 #if defined(STLSOFT_COMPILER_IS_BORLAND)
00226 static target_base_type_* manage_const(target_base_type_ const* p)
00227 {
00228 return const_cast<target_base_type_*>(p);
00229 }
00230 #else
00231 static target_base_type_ const* manage_const(target_base_type_ const* p)
00232 {
00233 return p;
00234 }
00235 #endif
00236
00237 public:
00239 template <ss_typename_param_k Source>
00240 ptr_cast(Source &s)
00241 : m_p(manage_const(&dynamic_cast<Target>(s)))
00242 {
00243
00244 }
00245
00247 template <ss_typename_param_k Source>
00248 #if defined(STLSOFT_COMPILER_IS_BORLAND) || \
00249 defined(STLSOFT_COMPILER_IS_GCC) || \
00250 defined(STLSOFT_COMPILER_IS_MWERKS)
00251 ptr_cast(Source*& s)
00252 #else
00253 ptr_cast(Source* s)
00254 #endif
00255 : m_p(manage_const(dynamic_cast<Target>(s)))
00256 {
00257 if(NULL == m_p)
00258 {
00259 STLSOFT_THROW_X(stlsoft_ns_qual_std(bad_cast)());
00260 }
00261 }
00262
00263 #ifndef STLSOFT_DOCUMENTATION_SKIP_SECTION
00264 ptr_cast(pointer_type pt)
00265 : m_p(pt)
00266 {}
00267 ptr_cast(reference_type t)
00268 : m_p(&t)
00269 {}
00270 #endif
00271
00272 public:
00274 operator reference_type () const
00275 {
00276 return const_cast<reference_type>(*m_p);
00277 }
00279 operator pointer_type () const
00280 {
00281 return const_cast<pointer_type>(m_p);
00282 }
00283
00284 private:
00285 pointer_type m_p;
00286
00287
00288 private:
00289 ptr_cast(class_type const&);
00290 };
00291
00293
00294
00295 #ifdef STLSOFT_UNITTEST
00296 # include "./unittest/ptr_cast_unittest_.h"
00297 #endif
00298
00299
00300
00301 #ifndef _STLSOFT_NO_NAMESPACE
00302 }
00303 #endif
00304
00305
00306
00307 #endif
00308
00309