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| author | Mounir IDRASSI <mounir.idrassi@idrix.fr> | 2013-06-22 16:16:13 +0200 |
|---|---|---|
| committer | Mounir IDRASSI <mounir.idrassi@idrix.fr> | 2014-11-08 23:18:07 +0100 |
| commit | c606f0866c3a2a5db3ef9bc41738ef33eb9612a9 (patch) | |
| tree | 5847c644cdfff3c1dd55b88b565448087ae89f11 /src/Platform/ForEach.h | |
| download | VeraCrypt-c606f0866c3a2a5db3ef9bc41738ef33eb9612a9.tar.gz VeraCrypt-c606f0866c3a2a5db3ef9bc41738ef33eb9612a9.zip | |
Add original TrueCrypt 7.1a sources
Diffstat (limited to 'src/Platform/ForEach.h')
| -rw-r--r-- | src/Platform/ForEach.h | 118 |
1 files changed, 118 insertions, 0 deletions
diff --git a/src/Platform/ForEach.h b/src/Platform/ForEach.h new file mode 100644 index 00000000..786ff56b --- /dev/null +++ b/src/Platform/ForEach.h @@ -0,0 +1,118 @@ +/*
+ Copyright (c) 2008 TrueCrypt Developers Association. All rights reserved.
+
+ Governed by the TrueCrypt License 3.0 the full text of which is contained in
+ the file License.txt included in TrueCrypt binary and source code distribution
+ packages.
+*/
+
+#ifndef TC_HEADER_Platform_ForEach
+#define TC_HEADER_Platform_ForEach
+
+namespace TrueCrypt
+{
+ 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 <class T>
+ 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 <class T>
+ 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 <class T>
+ static ContainerForward <T> GetContainerForward (const T &container)
+ {
+ return ContainerForward <T> (container);
+ }
+
+ template <class T>
+ static ContainerReverse <T> GetContainerReverse (const T &container)
+ {
+ return ContainerReverse <T> (container);
+ }
+
+ protected:
+ template <class T>
+ struct TypeWrapper { };
+
+ public:
+ template <class T>
+ static TypeWrapper <T> ToTypeWrapper (const T &x) { return TypeWrapper <T> (); }
+
+ struct TypeWrapperDummy
+ {
+ template <class T>
+ operator TypeWrapper <T> () const { return TypeWrapper <T> (); }
+ };
+
+ template <class T>
+ static const ContainerForward <T> &GetContainerForward (const Container &forEachContainer, const TypeWrapper <T> &)
+ {
+ return static_cast <const ContainerForward <T> &> (forEachContainer);
+ }
+
+ template <class T>
+ static const ContainerReverse <T> &GetContainerReverse (const Container &forEachContainer, const TypeWrapper <T> &)
+ {
+ return static_cast <const ContainerReverse <T> &> (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
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