X-Git-Url: https://git.saurik.com/wxWidgets.git/blobdiff_plain/c86f1403c3737c07d58676a203f4707942684a01..bf38cbffd54c50dd11c89f34542704f92db174eb:/include/wx/dynarray.h diff --git a/include/wx/dynarray.h b/include/wx/dynarray.h index 1afdd85316..a5b90b2b16 100644 --- a/include/wx/dynarray.h +++ b/include/wx/dynarray.h @@ -19,7 +19,7 @@ #include "wx/defs.h" #include "wx/debug.h" -/** @name Dynamic arrays and lists +/** @name Dynamic arrays and object arrays (array which own their elements) @memo Arrays which grow on demand and do range checking (only in debug) */ //@{ @@ -29,7 +29,7 @@ // ---------------------------------------------------------------------------- /** - the initial size by which an array/list grows when an element is added + the initial size by which an array grows when an element is added default value avoids allocate one or two bytes when the array is created which is rather inefficient */ @@ -61,10 +61,10 @@ typedef int (CMPFUNC_CONV *CMPFUNC)(const void* pItem1, const void* pItem2); so it's not too important if it's not called (this happens when you cast "SomeArray *" as "BaseArray *" and then delete it) - @memo Base class for template array and list classes + @memo Base class for template array classes */ // ---------------------------------------------------------------------------- -class wxBaseArray +class WXDLLEXPORT wxBaseArray { public: /** @name ctors and dtor */ @@ -85,32 +85,35 @@ public: /** @name memory management */ //@{ - /// empties the list, but doesn't release memory - void Empty() { m_uiCount = 0; } - /// empties the list and releases memory + /// empties the array, but doesn't release memory + void Empty() { m_nCount = 0; } + /// empties the array and releases memory void Clear(); /// preallocates memory for given number of items void Alloc(size_t uiSize); + /// minimizes the memory used by the array (frees unused memory) + void Shrink(); //@} /** @name simple accessors */ //@{ /// number of elements in the array - size_t Count() const { return m_uiCount; } + size_t Count() const { return m_nCount; } + size_t GetCount() const { return m_nCount; } /// is it empty? - bool IsEmpty() const { return m_uiCount == 0; } + bool IsEmpty() const { return m_nCount == 0; } //@} protected: // these methods are protected because if they were public one could - // mistakenly call one of them instead of DEFINE_ARRAY's or LIST's + // mistakenly call one of them instead of DEFINE_ARRAY's or OBJARRAY's // type safe methods /** @name items access */ //@{ /// get item at position uiIndex (range checking is done in debug version) long& Item(size_t uiIndex) const - { wxASSERT( uiIndex < m_uiCount ); return m_pItems[uiIndex]; } + { wxASSERT( uiIndex < m_nCount ); return m_pItems[uiIndex]; } /// same as Item() long& operator[](size_t uiIndex) const { return Item(uiIndex); } //@} @@ -120,8 +123,8 @@ protected: /** Search the element in the array, starting from the either side @param bFromEnd if TRUE, start from the end - @return index of the first item matched or NOT_FOUND - @see NOT_FOUND + @return index of the first item matched or wxNOT_FOUND + @see wxNOT_FOUND */ int Index(long lItem, bool bFromEnd = FALSE) const; /// search for an item using binary search in a sorted array @@ -144,8 +147,8 @@ protected: private: void Grow(); // makes array bigger if needed - size_t m_uiSize, // current size of the array - m_uiCount; // current number of elements + size_t m_nSize, // current size of the array + m_nCount; // current number of elements long *m_pItems; // pointer to data }; @@ -159,22 +162,26 @@ private: // types of sizeof()<=sizeof(long) or pointers if sizeof(pointer)<=sizeof(long) // // NB: it has only inline functions => takes no space at all +// Mod by JACS: Salford C++ doesn't like 'var->operator=' syntax, as in: +// { ((wxBaseArray *)this)->operator=((const wxBaseArray&)src); +// so using a temporary variable instead. // ---------------------------------------------------------------------------- #define _WX_DEFINE_ARRAY(T, name) \ typedef int (CMPFUNC_CONV *CMPFUNC##T)(T *pItem1, T *pItem2); \ -class name : public wxBaseArray \ +class WXDLLEXPORTLOCAL name : public wxBaseArray \ { \ public: \ name() \ { wxASSERT( sizeof(T) <= sizeof(long) ); } \ \ name& operator=(const name& src) \ - { ((wxBaseArray *)this)->operator=((const wxBaseArray&)src); \ + { wxBaseArray* temp = (wxBaseArray*) this; \ + (*temp) = ((const wxBaseArray&)src); \ return *this; } \ \ - T& operator[](size_t uiIndex) const \ + T& operator[](size_t uiIndex) const \ { return (T&)(wxBaseArray::Item(uiIndex)); } \ - T& Item(size_t uiIndex) const \ + T& Item(size_t uiIndex) const \ { return (T&)(wxBaseArray::Item(uiIndex)); } \ T& Last() const \ { return (T&)(wxBaseArray::Item(Count() - 1)); } \ @@ -184,13 +191,13 @@ public: \ \ void Add(T Item) \ { wxBaseArray::Add((long)Item); } \ - void Insert(T Item, size_t uiIndex) \ + void Insert(T Item, size_t uiIndex) \ { wxBaseArray::Insert((long)Item, uiIndex) ; } \ \ - void Remove(size_t uiIndex) { wxBaseArray::Remove(uiIndex); } \ + void Remove(size_t uiIndex) { wxBaseArray::Remove(uiIndex); } \ void Remove(T Item) \ { int iIndex = Index(Item); \ - wxCHECK2_MSG( iIndex != NOT_FOUND, return, \ + wxCHECK2_MSG( iIndex != wxNOT_FOUND, return, \ "removing inexisting element in wxArray::Remove" ); \ wxBaseArray::Remove((size_t)iIndex); } \ \ @@ -213,23 +220,27 @@ public: \ // the normal arrays otherwise. // // NB: it has only inline functions => takes no space at all +// Mod by JACS: Salford C++ doesn't like 'var->operator=' syntax, as in: +// { ((wxBaseArray *)this)->operator=((const wxBaseArray&)src); +// so using a temporary variable instead. // ---------------------------------------------------------------------------- #define _WX_DEFINE_SORTED_ARRAY(T, name) \ typedef int (CMPFUNC_CONV *SCMPFUNC##T)(T pItem1, T pItem2); \ -class name : public wxBaseArray \ +class WXDLLEXPORTLOCAL name : public wxBaseArray \ { \ public: \ name(SCMPFUNC##T fn) \ { wxASSERT( sizeof(T) <= sizeof(long) ); m_fnCompare = fn; } \ \ name& operator=(const name& src) \ - { ((wxBaseArray *)this)->operator=((const wxBaseArray&)src); \ + { wxBaseArray* temp = (wxBaseArray*) this; \ + (*temp) = ((const wxBaseArray&)src); \ m_fnCompare = src.m_fnCompare; \ return *this; } \ \ - T& operator[](size_t uiIndex) const \ + T& operator[](size_t uiIndex) const \ { return (T&)(wxBaseArray::Item(uiIndex)); } \ - T& Item(size_t uiIndex) const \ + T& Item(size_t uiIndex) const \ { return (T&)(wxBaseArray::Item(uiIndex)); } \ T& Last() const \ { return (T&)(wxBaseArray::Item(Count() - 1)); } \ @@ -240,23 +251,23 @@ public: \ void Add(T Item) \ { wxBaseArray::Add((long)Item, (CMPFUNC)m_fnCompare); } \ \ - void Remove(size_t uiIndex) { wxBaseArray::Remove(uiIndex); } \ + void Remove(size_t uiIndex) { wxBaseArray::Remove(uiIndex); } \ void Remove(T Item) \ { int iIndex = Index(Item); \ - wxCHECK2_MSG( iIndex != NOT_FOUND, return, \ + wxCHECK2_MSG( iIndex != wxNOT_FOUND, return, \ "removing inexisting element in wxArray::Remove" ); \ - wxBaseArray::Remove((size_t)iIndex); } \ + wxBaseArray::Remove((size_t)iIndex); } \ \ private: \ SCMPFUNC##T m_fnCompare; \ } // ---------------------------------------------------------------------------- -// see WX_DECLARE_LIST and WX_DEFINE_LIST +// see WX_DECLARE_OBJARRAY and WX_DEFINE_OBJARRAY // ---------------------------------------------------------------------------- -#define _WX_DECLARE_LIST(T, name) \ +#define _WX_DECLARE_OBJARRAY(T, name) \ typedef int (CMPFUNC_CONV *CMPFUNC##T)(T** pItem1, T** pItem2); \ -class name : public wxBaseArray \ +class WXDLLEXPORTLOCAL name : public wxBaseArray \ { \ public: \ name() { } \ @@ -265,9 +276,9 @@ public: \ \ ~name(); \ \ - T& operator[](size_t uiIndex) const \ + T& operator[](size_t uiIndex) const \ { return *(T*)wxBaseArray::Item(uiIndex); } \ - T& Item(size_t uiIndex) const \ + T& Item(size_t uiIndex) const \ { return *(T*)wxBaseArray::Item(uiIndex); } \ T& Last() const \ { return *(T*)(wxBaseArray::Item(Count() - 1)); } \ @@ -278,16 +289,16 @@ public: \ void Add(const T* pItem) \ { wxBaseArray::Add((long)pItem); } \ \ - void Insert(const T& Item, size_t uiIndex); \ - void Insert(const T* pItem, size_t uiIndex) \ + void Insert(const T& Item, size_t uiIndex); \ + void Insert(const T* pItem, size_t uiIndex) \ { wxBaseArray::Insert((long)pItem, uiIndex); } \ \ void Empty(); \ \ - T* Detach(size_t uiIndex) \ + T* Detach(size_t uiIndex) \ { T* p = (T*)wxBaseArray::Item(uiIndex); \ wxBaseArray::Remove(uiIndex); return p; } \ - void Remove(size_t uiIndex); \ + void Remove(size_t uiIndex); \ \ void Sort(CMPFUNC##T fCmp) { wxBaseArray::Sort((CMPFUNC)fCmp); } \ \ @@ -296,17 +307,17 @@ private: \ } // ---------------------------------------------------------------------------- -/** @name Macros for definition of dynamic arrays and lists +/** @name Macros for definition of dynamic arrays and objarrays These macros are ugly (especially if you look in the sources ;-), but they allow us to define 'template' classes without actually using templates.

- Range checking is performed in debug build for both arrays and lists. Type - checking is done at compile-time. Warning: arrays never shrink, they - only grow, so loading 10 millions in an array only to delete them 2 lines - below is not recommended. However, it does free memory when it's - destroyed, so if you destroy array also, it's ok. + Range checking is performed in debug build for both arrays and objarrays. + Type checking is done at compile-time. Warning: arrays never shrink, + they only grow, so loading 10 millions in an array only to delete them 2 + lines below is not recommended. However, it does free memory when + it's destroyed, so if you destroy array also, it's ok. */ // ---------------------------------------------------------------------------- @@ -331,60 +342,60 @@ private: \ _WX_DEFINE_SORTED_ARRAY(_A##name, name) /** - This macro generates a new list class which owns the objects it contains, - i.e. it will delete them when it is destroyed. An element is of type T*, - but arguments of type T& are taken (see below!) and T& is returned. -
+ This macro generates a new objarrays class which owns the objects it + contains, i.e. it will delete them when it is destroyed. An element is of + type T*, but arguments of type T& are taken (see below!) and T& is + returned.
Don't use this for simple types such as "int" or "long"! You _may_ use it for "double" but it's awfully inefficient.

Note on Add/Insert functions:
- 1) function(T*) gives the object to the list, i.e. it will delete the - object when it's removed or in the list's dtor + 1) function(T*) gives the object to the array, i.e. it will delete the + object when it's removed or in the array's dtor
2) function(T&) will create a copy of the object and work with it

Also:
- 1) Remove() will delete the object after removing it from the list + 1) Remove() will delete the object after removing it from the array
- 2) Detach() just removes the object from the list (returning pointer to it) + 2) Detach() just removes the object from the array (returning pointer to it)

NB1: Base type T should have an accessible copy ctor if Add(T&) is used,
- NB2: Never ever cast a list to it's base type: as dtor is not virtual + NB2: Never ever cast a array to it's base type: as dtor is not virtual it will provoke memory leaks

some functions of this class are not inline, so it takes some space to define new class from this template. - @memo declare list class 'name' containing elements of type 'T' + @memo declare objarray class 'name' containing elements of type 'T' */ -#define WX_DECLARE_LIST(T, name) typedef T _L##name; \ - _WX_DECLARE_LIST(_L##name, name) +#define WX_DECLARE_OBJARRAY(T, name) typedef T _L##name; \ + _WX_DECLARE_OBJARRAY(_L##name, name) /** - To use a list class you must + To use an objarray class you must
  • #include "dynarray.h" -
  • DECLARE_LIST(element_type, list_class_name) -
  • #include "listimpl.cpp" -
  • DEFINE_LIST(list_class_name) // same as above! +
  • WX_DECLARE_OBJARRAY(element_type, list_class_name) +
  • #include "arrimpl.cpp" +
  • WX_DEFINE_OBJARRAY(list_class_name) // same as above!

    - This is necessary because at the moment of DEFINE_LIST class element_type - must be fully defined (i.e. forward declaration is not enough), while - DECLARE_LIST may be done anywhere. The separation of two allows to break - cicrcular dependencies with classes which have member variables of list - type. + This is necessary because at the moment of DEFINE_OBJARRAY class + element_type must be fully defined (i.e. forward declaration is not + enough), while WX_DECLARE_OBJARRAY may be done anywhere. The separation of + two allows to break cicrcular dependencies with classes which have member + variables of objarray type. - @memo define (must include listimpl.cpp!) list class 'name' + @memo define (must include arrimpl.cpp!) objarray class 'name' */ -#define WX_DEFINE_LIST(name) "don't forget to include listimpl.cpp!" +#define WX_DEFINE_OBJARRAY(name) "don't forget to include arrimpl.cpp!" //@} // ---------------------------------------------------------------------------- @@ -392,6 +403,8 @@ private: \ // # overhead if not used? // ---------------------------------------------------------------------------- +#define WXDLLEXPORTLOCAL WXDLLEXPORT + //@{ /** @name ArrayInt */ WX_DEFINE_ARRAY(int, wxArrayInt); @@ -403,5 +416,28 @@ WX_DEFINE_ARRAY(void *, wxArrayPtrVoid); //@} +#undef WXDLLEXPORTLOCAL +#define WXDLLEXPORTLOCAL + +// ----------------------------------------------------------------------------- +// convinience macros +// ----------------------------------------------------------------------------- + +// delete all array elements +// +// NB: the class declaration of the array elements must be visible from the +// place where you use this macro, otherwise the proper destructor may not +// be called (a decent compiler should give a warning about it, but don't +// count on it)! +#define WX_CLEAR_ARRAY(array) \ + { \ + size_t count = array.Count(); \ + for ( size_t n = 0; n < count; n++ ) \ + { \ + delete array[n]; \ + } \ + \ + array.Empty(); \ + } #endif // _DYNARRAY_H