/* Derived from source code of TrueCrypt 7.1a, which is Copyright (c) 2008-2012 TrueCrypt Developers Association and which is governed by the TrueCrypt License 3.0. Modifications and additions to the original source code (contained in this file) and all other portions of this file are Copyright (c) 2013-2017 IDRIX and are governed by the Apache License 2.0 the full text of which is contained in the file License.txt included in VeraCrypt binary and source code distribution packages. */ #ifndef TC_HEADER_Platform_ForEach #define TC_HEADER_Platform_ForEach namespace VeraCrypt { class ForEach { public: struct Container { Container () : InnerContinue (true), InnerEndCondition (false) { } virtual ~Container () { } void Continue () const { InnerContinue = true; } bool InnerIsNotEnd () const { return InnerEndCondition = !InnerEndCondition; } virtual bool IsNotEnd () const = 0; virtual void Next () const = 0; mutable bool InnerContinue; mutable bool InnerEndCondition; }; protected: template struct ContainerForward : Container { ContainerForward (const T &container) : ContainerCopy (container), EndIterator (ContainerCopy.end()), Iterator (ContainerCopy.begin()) { } virtual bool IsNotEnd () const { bool r = InnerContinue && Iterator != EndIterator; InnerContinue = false; return r; } virtual void Next () const { ++Iterator; } const T ContainerCopy; // Support for temporary objects typename T::const_iterator EndIterator; mutable typename T::const_iterator Iterator; private: ContainerForward &operator= (const ContainerForward &); }; template struct ContainerReverse : Container { ContainerReverse (const T &container) : ContainerCopy (container), EndIterator (ContainerCopy.rend()), Iterator (ContainerCopy.rbegin()) { } virtual bool IsNotEnd () const { bool r = InnerContinue && Iterator != EndIterator; InnerContinue = false; return r; } virtual void Next () const { ++Iterator; } const T ContainerCopy; typename T::const_reverse_iterator EndIterator; mutable typename T::const_reverse_iterator Iterator; private: ContainerReverse &operator= (const ContainerReverse &); }; public: template static ContainerForward GetContainerForward (const T &container) { return ContainerForward (container); } template static ContainerReverse GetContainerReverse (const T &container) { return ContainerReverse (container); } protected: template struct TypeWrapper { }; public: template static TypeWrapper ToTypeWrapper (const T &x) { return TypeWrapper (); } struct TypeWrapperDummy { template operator TypeWrapper () const { return TypeWrapper (); } }; template static const ContainerForward &GetContainerForward (const Container &forEachContainer, const TypeWrapper &) { return static_cast &> (forEachContainer); } template static const ContainerReverse &GetContainerReverse (const Container &forEachContainer, const TypeWrapper &) { return static_cast &> (forEachContainer); } }; } #define FOREACH_TEMPLATE(dereference,listType,variable,listInstance) \ for (const ForEach::Container &forEachContainer = ForEach::GetContainer##listType (listInstance); forEachContainer.IsNotEnd(); forEachContainer.Next()) \ for (variable = dereference(ForEach::GetContainer##listType (forEachContainer, (true ? ForEach::TypeWrapperDummy() : ForEach::ToTypeWrapper (listInstance))).Iterator); forEachContainer.InnerIsNotEnd(); forEachContainer.Continue()) #define foreach(variable,listInstance) FOREACH_TEMPLATE(*, Forward, variable, listInstance) #define foreach_ref(variable,listInstance) FOREACH_TEMPLATE(**, Forward, variable, listInstance) #define foreach_reverse(variable,listInstance) FOREACH_TEMPLATE(*, Reverse, variable, listInstance) #define foreach_reverse_ref(variable,listInstance) FOREACH_TEMPLATE(**, Reverse, variable, listInstance) #endif // TC_HEADER_Platform_ForEach '#n25'>25 26 27 28 29 30 31 32 33 34 35 36 37 38 39 40 41 42 43 44 45 46 47 48 49 50 51 52 53 54 55 56 57 58 59 60 61 62 63 64 65 66 67 68 69 70 71 72 73 74 75 76 77 78 79 80 81 82 83 84 85 86 87 88 89 90 91 92 93 94 95 96 97 98 99 100 101 102 103 104 105 106 107 108 109 110 111 112 113 114 115 116 117 118 119 120 121 122 123 124 125 126 127 128 129 130 131 132 133 134 135 136 137 138 139 140 141 142 143 144 145 146 147 148 149 150 151 152 153 154 155 156 157 158 159 160 161 162 163 164 165 166 167