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conversion.hppGo to the documentation of this file.00001 /* 00002 Copyright 2005-2007 Adobe Systems Incorporated 00003 Distributed under the MIT License (see accompanying file LICENSE_1_0_0.txt 00004 or a copy at http://stlab.adobe.com/licenses.html) 00005 */ 00006 00007 /*************************************************************************************************/ 00008 00009 #ifndef ADOBE_CONVERSION_HPP 00010 #define ADOBE_CONVERSION_HPP 00011 00012 #include <adobe/config.hpp> 00013 #include <string> 00014 00015 #include <adobe/string_fwd.hpp> 00016 00017 /*************************************************************************************************/ 00018 00019 namespace adobe { 00020 00021 /*************************************************************************************************/ 00022 00023 template <typename T> 00024 struct promote 00025 { 00026 typedef T type; 00027 }; 00028 00029 template <> struct promote<short> { typedef double type; }; 00030 template <> struct promote<int> { typedef double type; }; 00031 template <> struct promote<long> { typedef double type; }; 00032 00033 template <> struct promote<unsigned short> { typedef double type; }; 00034 template <> struct promote<unsigned int> { typedef double type; }; 00035 template <> struct promote<unsigned long> { typedef double type; }; 00036 00037 template <> struct promote<float> { typedef double type; }; 00038 00039 template <> struct promote<const char*> { typedef version_1::string_t type; }; 00040 template <> struct promote<std::string> { typedef version_1::string_t type; }; 00041 00042 /*************************************************************************************************/ 00043 00044 template <typename lht, typename rht> 00045 inline lht explicit_cast(const rht& rhs) 00046 { return static_cast<lht>(rhs); } 00047 00048 /*************************************************************************************************/ 00049 00050 template <typename R, typename T> 00051 struct runtime_cast_t { 00052 R operator()(T& x) const { return dynamic_cast<R>(x); } 00053 }; 00054 00055 template <typename R, typename T> 00056 inline R runtime_cast(T& x) 00057 { return runtime_cast_t<R, T>()(x); } 00058 00059 template <typename R, typename T> 00060 inline R runtime_cast(T* x) 00061 { return runtime_cast_t<R, T*>()(x); } 00062 00063 template <typename R, typename T> 00064 inline bool runtime_cast(const T& x, R& r) 00065 { 00066 const R* p = runtime_cast<const R*>(&x); 00067 if (!p) return false; 00068 r = *p; 00069 return true; 00070 } 00071 00072 /*************************************************************************************************/ 00073 00074 template <typename T> 00075 inline T& remove_const(const T& x) 00076 { return const_cast<T&>(x); } 00077 00078 /*************************************************************************************************/ 00079 00080 } // namespace adobe 00081 00082 /*************************************************************************************************/ 00083 00084 #endif 00085 00086 /*************************************************************************************************/ | ||||||
