Add factory functions for use with future unit tests.

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

diff --git a/include/wx/stringimpl.h b/include/wx/stringimpl.h
index be477a3275a6ec86e9bc2471b400105369d50a6c..6f4f8fba63f487ec226db410139ada373884df95 100644 (file)
--- a/include/wx/stringimpl.h
+++ b/include/wx/stringimpl.h
@@ -23,7 +23,8 @@
 // ----------------------------------------------------------------------------
 
 #include "wx/defs.h"        // everybody should include this
-#include "wx/wxchar.h"      // for wxChar, wxStrlen() etc.
+#include "wx/chartype.h"    // for wxChar
+#include "wx/wxcrtbase.h"   // for wxStrlen() etc.
 
 #include <stdlib.h>
 
@@ -42,6 +43,10 @@
 
 // global pointer to empty string
 extern WXDLLIMPEXP_DATA_BASE(const wxChar*) wxEmptyString;
+#if wxUSE_UNICODE_UTF8
+// FIXME-UTF8: we should have only one wxEmptyString
+extern WXDLLIMPEXP_DATA_BASE(const wxStringCharType*) wxEmptyStringImpl;
+#endif
 
 
 // ----------------------------------------------------------------------------
@@ -57,17 +62,20 @@ extern WXDLLIMPEXP_DATA_BASE(const wxChar*) wxEmptyString;
 #include <string>
 #include "wx/afterstd.h"
 
+#ifdef HAVE_STD_WSTRING
+    typedef std::wstring wxStdWideString;
+#else
+    typedef std::basic_string<wchar_t> wxStdWideString;
+#endif
+
 #if wxUSE_UNICODE_WCHAR
-    #ifdef HAVE_STD_WSTRING
-        typedef std::wstring wxStdString;
-    #else
-        typedef std::basic_string<wxChar> wxStdString;
-    #endif
+    typedef wxStdWideString wxStdString;
 #else
     typedef std::string wxStdString;
 #endif
 
-#endif // need <string>
+#endif // wxUSE_STL_BASED_WXSTRING || wxUSE_STD_STRING
+
 
 #if wxUSE_STL_BASED_WXSTRING
 
@@ -97,8 +105,8 @@ struct WXDLLIMPEXP_BASE wxStringData
   size_t  nDataLength,  // actual string length
           nAllocLength; // allocated memory size
 
-  // mimics declaration 'wxChar data[nAllocLength]'
-  wxChar* data() const { return (wxChar*)(this + 1); }
+  // mimics declaration 'wxStringCharType data[nAllocLength]'
+  wxStringCharType* data() const { return (wxStringCharType*)(this + 1); }
 
   // empty string has a special ref count so it's never deleted
   bool  IsEmpty()   const { return (nRefs == -1); }
@@ -143,7 +151,11 @@ protected:
   // string (re)initialization functions
     // initializes the string to the empty value (must be called only from
     // ctors, use Reinit() otherwise)
+#if wxUSE_UNICODE_UTF8
+  void Init() { m_pchData = (wxStringCharType *)wxEmptyStringImpl; } // FIXME-UTF8
+#else
   void Init() { m_pchData = (wxStringCharType *)wxEmptyString; }
+#endif
     // initializes the string with (a part of) C-string
   void InitWith(const wxStringCharType *psz, size_t nPos = 0, size_t nLen = npos);
     // as Init, but also frees old data
@@ -184,7 +196,9 @@ public:
         typedef wxStringCharType value_type;                                  \
         typedef ref_type reference;                                           \
         typedef ptr_type pointer;                                             \
+        typedef int difference_type;                                          \
                                                                               \
+        iterator_name() : m_ptr(NULL) { }                                     \
         iterator_name(pointer ptr) : m_ptr(ptr) { }                           \
                                                                               \
         reference operator*() const { return *m_ptr; }                        \
@@ -207,14 +221,22 @@ public:
                                                                               \
         iterator_name operator+(int n) const                                  \
             { return iterator_name(m_ptr + n); }                              \
+        iterator_name operator+(size_t n) const                               \
+            { return iterator_name(m_ptr + n); }                              \
         iterator_name operator-(int n) const                                  \
             { return iterator_name(m_ptr - n); }                              \
+        iterator_name operator-(size_t n) const                               \
+            { return iterator_name(m_ptr - n); }                              \
         iterator_name& operator+=(int n)                                      \
             { m_ptr += n; return *this; }                                     \
+        iterator_name& operator+=(size_t n)                                   \
+            { m_ptr += n; return *this; }                                     \
         iterator_name& operator-=(int n)                                      \
+            { m_ptr -= n; return *this; }                                     \
+        iterator_name& operator-=(size_t n)                                   \
             { m_ptr -= n; return *this; }                                     \
                                                                               \
-        size_t operator-(const iterator_name& i) const                        \
+        difference_type operator-(const iterator_name& i) const               \
             { return m_ptr - i.m_ptr; }                                       \
                                                                               \
         bool operator==(const iterator_name& i) const                         \
@@ -239,7 +261,12 @@ public:
                                                                               \
         pointer m_ptr
 
-  class iterator
+  // we need to declare const_iterator in wxStringImpl scope, the friend
+  // declaration inside iterator class itself is not enough, or at least not
+  // for g++ 3.4 (g++ 4 is ok)
+  class WXDLLIMPEXP_BASE const_iterator;
+
+  class WXDLLIMPEXP_BASE iterator
   {
     WX_DEFINE_STRINGIMPL_ITERATOR(iterator,
                                   wxStringCharType&,
@@ -248,7 +275,7 @@ public:
     friend class const_iterator;
   };
 
-  class const_iterator
+  class WXDLLIMPEXP_BASE const_iterator
   {
   public:
       const_iterator(iterator i) : m_ptr(i.m_ptr) { }
@@ -258,6 +285,8 @@ public:
                                     const wxStringCharType*);
   };
 
+  #undef WX_DEFINE_STRINGIMPL_ITERATOR
+
 
   // constructors and destructor
     // ctor for an empty string
@@ -297,6 +326,17 @@ public:
     // take everything between start and end
   wxStringImpl(const_iterator start, const_iterator end);
 
+
+    // ctor from and conversion to std::string
+#if wxUSE_STD_STRING
+  wxStringImpl(const wxStdString& impl)
+      { InitWith(impl.c_str(), 0, impl.length()); }
+
+  operator wxStdString() const
+      { return wxStdString(c_str(), length()); }
+#endif
+
+
     // dtor is not virtual, this class must not be inherited from!
   ~wxStringImpl()
   {
@@ -414,9 +454,9 @@ public:
     // insert first n (or all if n == npos) characters of sz
   wxStringImpl& insert(size_t nPos, const wxStringCharType *sz, size_t n = npos);
     // insert n copies of ch
-  wxStringImpl& insert(size_t nPos, size_t n, wxStringCharType ch)// FIXME-UTF8: tricky
+  wxStringImpl& insert(size_t nPos, size_t n, wxStringCharType ch)
     { return insert(nPos, wxStringImpl(n, ch)); }
-  iterator insert(iterator it, wxStringCharType ch) // FIXME-UTF8: tricky
+  iterator insert(iterator it, wxStringCharType ch)
     { size_t idx = it - begin(); insert(idx, 1, ch); return begin() + idx; }
   void insert(iterator it, const_iterator first, const_iterator last)
     { insert(it - begin(), first, last - first); }
@@ -502,12 +542,10 @@ public:
       // string += char
   wxStringImpl& operator+=(wxStringCharType ch) { return append(1, ch); }
 
-#if !wxUSE_UNICODE_UTF8
   // helpers for wxStringBuffer and wxStringBufferLength
   wxStringCharType *DoGetWriteBuf(size_t nLen);
   void DoUngetWriteBuf();
   void DoUngetWriteBuf(size_t nLen);
-#endif
 
   friend class WXDLLIMPEXP_BASE wxString;
 };