attempt for workaround for stl forward declaration problems

[wxWidgets.git] / include / wx / stack.h

diff --git a/include/wx/stack.h b/include/wx/stack.h
index 53f5121c2cde1de81690dcca298a17fde305f196..b4e8ed2f8a889d6a0d351c1bcc18545228776127 100644 (file)
--- a/include/wx/stack.h
+++ b/include/wx/stack.h
@@ -1,10 +1,10 @@
 ///////////////////////////////////////////////////////////////////////////////
 // Name:        wx/stack.h
 // Purpose:     STL stack clone
-// Author:      Lindsay Mathieson
-// Modified by:
+// Author:      Lindsay Mathieson, Vadim Zeitlin
 // Created:     30.07.2001
-// Copyright:   (c) 2001 Lindsay Mathieson <lindsay@mathieson.org>
+// Copyright:   (c) 2001 Lindsay Mathieson <lindsay@mathieson.org> (WX_DECLARE_STACK)
+//                  2011 Vadim Zeitlin <vadim@wxwidgets.org>
 // Licence:     wxWindows licence
 ///////////////////////////////////////////////////////////////////////////////
 
@@ -13,32 +13,71 @@
 
 #include "wx/vector.h"
 
-#define WX_DECLARE_STACK(obj, cls)\
-class cls : public wxVectorBase\
+#if wxUSE_STD_CONTAINERS
+
+#include <stack>
+#define wxStack std::stack
+
+#else // !wxUSE_STD_CONTAINERS
+
+// Notice that unlike std::stack, wxStack currently always uses wxVector and
+// can't be used with any other underlying container type.
+//
+// Another difference is that comparison operators between stacks are not
+// implemented (but they should be, see 23.2.3.3 of ISO/IEC 14882:1998).
+
+template <typename T>
+class wxStack
+{
+public:
+    typedef wxVector<T> container_type;
+    typedef typename container_type::size_type size_type;
+    typedef typename container_type::value_type value_type;
+
+    wxStack() { }
+    explicit wxStack(const container_type& cont) : m_cont(cont) { }
+
+    // Default copy ctor, assignment operator and dtor are ok.
+
+
+    bool empty() const { return m_cont.empty(); }
+    size_type size() const { return m_cont.size(); }
+
+    value_type& top() { return m_cont.back(); }
+    const value_type& top() const { return m_cont.back(); }
+
+    void push(const value_type& val) { m_cont.push_back(val); }
+    void pop() { m_cont.pop_back(); }
+
+private:
+    container_type m_cont;
+};
+
+#endif // wxUSE_STD_CONTAINERS/!wxUSE_STD_CONTAINERS
+
+
+// Deprecated macro-based class for compatibility only, don't use any more.
+#define WX_DECLARE_STACK(obj, cls) \
+class cls : public wxVector<obj> \
 {\
-    WX_DECLARE_VECTORBASE(obj, cls);\
 public:\
     void push(const obj& o)\
     {\
-        if ( !Alloc(size() + 1) )\
-        {\
-            wxFAIL_MSG(_T("failed to extend stack"));\
-        }\
-        Append(new obj(o));\
+        push_back(o); \
     };\
 \
     void pop()\
     {\
-        RemoveAt(size() - 1);\
+        pop_back(); \
     };\
 \
     obj& top()\
     {\
-        return *(obj *) GetItem(size() - 1);\
+        return at(size() - 1);\
     };\
     const obj& top() const\
     {\
-        return *(obj *) GetItem(size() - 1);\
+        return at(size() - 1); \
     };\
 }