X-Git-Url: https://git.saurik.com/wxWidgets.git/blobdiff_plain/e90c1d2a19361551eb07778280f22be3e759cf64..cbc906ceb79ba18e53fb94a563648b0347a1b15f:/include/wx/dynarray.h?ds=inline diff --git a/include/wx/dynarray.h b/include/wx/dynarray.h index b5466516d2..f70cc6c2f3 100644 --- a/include/wx/dynarray.h +++ b/include/wx/dynarray.h @@ -17,47 +17,65 @@ #endif #include "wx/defs.h" -#include "wx/debug.h" -/** @name Dynamic arrays and object arrays (array which own their elements) - @memo Arrays which grow on demand and do range checking (only in debug) - */ -//@{ +/* + This header defines the dynamic arrays and object arrays (i.e. arrays which + own their elements). Dynamic means that the arrays grow automatically as + needed. + + These macros are ugly (especially if you look in the sources ;-), but they + allow us to define "template" classes without actually using templates and so + this works with all compilers (and may be also much faster to compile even + with a compiler which does support templates). The arrays defined with these + macros are type-safe. + + Range checking is performed in debug build for both arrays and objarrays but + not in release build - so using an invalid index will just lead to a crash + then. + + Note about memory usage: arrays never shrink automatically (although you may + use Shrink() function explicitly), they only grow, so loading 10 millions in + an array only to delete them 2 lines below might be a bad idea if the array + object is not going to be destroyed soon. However, as it does free memory + when destroyed, it is ok if the array is a local variable. + */ // ---------------------------------------------------------------------------- // constants // ---------------------------------------------------------------------------- -/** - 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 +/* + 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 */ -#define WX_ARRAY_DEFAULT_INITIAL_SIZE (16) +#define WX_ARRAY_DEFAULT_INITIAL_SIZE (16) // ---------------------------------------------------------------------------- // types // ---------------------------------------------------------------------------- -/** - callback compare function for quick sort - must return negative value, 0 or positive value if pItem1 <, = or > pItem2 +/* + Callback compare function for quick sort. + + It must return negative value, 0 or positive value if the first item is + less than, equal to or greater than the second one. */ +extern "C" +{ typedef int (wxCMPFUNC_CONV *CMPFUNC)(const void* pItem1, const void* pItem2); +} // ---------------------------------------------------------------------------- -/** - base class managing data having size of type 'long' (not used directly) - - NB: for efficiency this often used class has no virtual functions (hence no - VTBL), even dtor is not virtual. If used as expected it won't - create any problems because ARRAYs from DEFINE_ARRAY have no dtor at all, - 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 classes -*/ +// Base class managing data having size of type 'long' (not used directly) +// +// NB: for efficiency this often used class has no virtual functions (hence no +// virtual table), even dtor is *not* virtual. If used as expected it +// won't create any problems because ARRAYs from DEFINE_ARRAY have no dtor +// at all, so it's not too important if it's not called (this happens when +// you cast "SomeArray *" as "BaseArray *" and then delete it) // ---------------------------------------------------------------------------- + class WXDLLEXPORT wxBaseArray { public: @@ -70,10 +88,6 @@ public: /// assignment operator wxBaseArray& operator=(const wxBaseArray& src); /// not virtual, see above - /// EXCEPT for Gnu compiler to reduce warnings... -#ifdef __GNUG__ - virtual -#endif ~wxBaseArray(); //@} @@ -92,10 +106,11 @@ public: /** @name simple accessors */ //@{ /// number of elements in the array - size_t Count() const { return m_nCount; } - size_t GetCount() const { return m_nCount; } + size_t GetCount() const { return m_nCount; } /// is it empty? bool IsEmpty() const { return m_nCount == 0; } + /// this version is obsolete, use GetCount() + size_t Count() const { return m_nCount; } //@} protected: @@ -123,6 +138,8 @@ protected: int Index(long lItem, bool bFromEnd = FALSE) const; /// search for an item using binary search in a sorted array int Index(long lItem, CMPFUNC fnCompare) const; + /// search for a place to insert the element into a sorted array + size_t IndexForInsert(long lItem, CMPFUNC fnCompare) const; /// add new element at the end void Add(long lItem); /// add item assuming the array is sorted with fnCompare function @@ -132,7 +149,7 @@ protected: /// remove first item matching this value void Remove(long lItem); /// remove item by index - void Remove(size_t uiIndex); + void RemoveAt(size_t uiIndex); //@} /// sort array elements using given compare function @@ -148,35 +165,36 @@ private: }; // ============================================================================ -// template classes +// The private helper macros containing the core of the array classes // ============================================================================ -// resolves the name conflict between the T() macor and T typedef: we can't -// use T() inside WX_DEFINE_ARRAY! -#define _WX_ERROR_SIZEOF T("illegal use of DEFINE_ARRAY") -#define _WX_ERROR_REMOVE T("removing inexisting element in wxArray::Remove") +// Implementation notes: +// +// JACS: Salford C++ doesn't like 'var->operator=' syntax, as in: +// { ((wxBaseArray *)this)->operator=((const wxBaseArray&)src); +// so using a temporary variable instead. +// +// The classes need a (even trivial) ~name() to link under Mac X +// +// _WX_ERROR_REMOVE is needed to resolve the name conflict between the wxT() +// macor and T typedef: we can't use wxT() inside WX_DEFINE_ARRAY! + +#define _WX_ERROR_REMOVE wxT("removing inexisting element in wxArray::Remove") // ---------------------------------------------------------------------------- -// This macro generates a new array class. It is intended for storage of simple -// 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. +// _WX_DEFINE_ARRAY: array for simple types // ---------------------------------------------------------------------------- -#define _WX_DEFINE_ARRAY(T, name) \ + +#define _WX_DEFINE_ARRAY(T, name, classexp) \ +wxCOMPILE_TIME_ASSERT2(sizeof(T) <= sizeof(long), \ + TypeIsTooBigToBeStoredInWxArray, \ + name); \ typedef int (CMPFUNC_CONV *CMPFUNC##T)(T *pItem1, T *pItem2); \ -class WXDLLEXPORT name : public wxBaseArray \ +classexp name : public wxBaseArray \ { \ public: \ - name() \ - { \ - size_t type = sizeof(T); \ - size_t sizelong = sizeof(long); \ - if ( type > sizelong ) \ - { wxFAIL_MSG( _WX_ERROR_SIZEOF ); } \ - } \ + name() { } \ + ~name() { } \ \ name& operator=(const name& src) \ { wxBaseArray* temp = (wxBaseArray*) this; \ @@ -198,48 +216,29 @@ public: \ void Insert(T Item, size_t uiIndex) \ { wxBaseArray::Insert((long)Item, uiIndex) ; } \ \ - void Remove(size_t uiIndex) { wxBaseArray::Remove(uiIndex); } \ + void RemoveAt(size_t uiIndex) { wxBaseArray::RemoveAt(uiIndex); } \ void Remove(T Item) \ { int iIndex = Index(Item); \ wxCHECK2_MSG( iIndex != wxNOT_FOUND, return, \ _WX_ERROR_REMOVE); \ - wxBaseArray::Remove((size_t)iIndex); } \ + wxBaseArray::RemoveAt((size_t)iIndex); } \ \ void Sort(CMPFUNC##T fCmp) { wxBaseArray::Sort((CMPFUNC)fCmp); } \ } // ---------------------------------------------------------------------------- -// This is the same as the previous macro, but it defines a sorted array. -// Differences: -// 1) it must be given a COMPARE function in ctor which takes 2 items of type -// T* and should return -1, 0 or +1 if the first one is less/greater -// than/equal to the second one. -// 2) the Add() method inserts the item in such was that the array is always -// sorted (it uses the COMPARE function) -// 3) it has no Sort() method because it's always sorted -// 4) Index() method is much faster (the sorted arrays use binary search -// instead of linear one), but Add() is slower. -// -// Summary: use this class when the speed of Index() function is important, use -// 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. +// _WX_DEFINE_SORTED_ARRAY: sorted array for simple data types // ---------------------------------------------------------------------------- -#define _WX_DEFINE_SORTED_ARRAY(T, name) \ + +#define _WX_DEFINE_SORTED_ARRAY(T, name, defcomp, classexp) \ +wxCOMPILE_TIME_ASSERT2(sizeof(T) <= sizeof(long), \ + TypeIsTooBigToBeStoredInWxArray, \ + name); \ typedef int (CMPFUNC_CONV *SCMPFUNC##T)(T pItem1, T pItem2); \ -class WXDLLEXPORT name : public wxBaseArray \ +classexp name : public wxBaseArray \ { \ public: \ - name(SCMPFUNC##T fn) \ - { size_t type = sizeof(T); \ - size_t sizelong = sizeof(long); \ - if ( type > sizelong ) \ - { wxFAIL_MSG( _WX_ERROR_SIZEOF ); } \ - m_fnCompare = fn; \ - } \ + name(SCMPFUNC##T fn defcomp) { m_fnCompare = fn; } \ \ name& operator=(const name& src) \ { wxBaseArray* temp = (wxBaseArray*) this; \ @@ -257,26 +256,34 @@ public: \ int Index(T Item) const \ { return wxBaseArray::Index((long)Item, (CMPFUNC)m_fnCompare); }\ \ + size_t IndexForInsert(T Item) const \ + { return wxBaseArray::IndexForInsert((long)Item, \ + (CMPFUNC)m_fnCompare); } \ + \ + void AddAt(T item, size_t index) \ + { wxBaseArray::Insert((long)item, index); } \ + \ void Add(T Item) \ { wxBaseArray::Add((long)Item, (CMPFUNC)m_fnCompare); } \ \ - void Remove(size_t uiIndex) { wxBaseArray::Remove(uiIndex); } \ + void RemoveAt(size_t uiIndex) { wxBaseArray::RemoveAt(uiIndex); } \ void Remove(T Item) \ { int iIndex = Index(Item); \ wxCHECK2_MSG( iIndex != wxNOT_FOUND, return, \ _WX_ERROR_REMOVE ); \ - wxBaseArray::Remove((size_t)iIndex); } \ + wxBaseArray::RemoveAt((size_t)iIndex); } \ \ private: \ SCMPFUNC##T m_fnCompare; \ } // ---------------------------------------------------------------------------- -// see WX_DECLARE_OBJARRAY and WX_DEFINE_OBJARRAY +// _WX_DECLARE_OBJARRAY: an array for pointers to type T with owning semantics // ---------------------------------------------------------------------------- -#define _WX_DECLARE_OBJARRAY(T, name) \ + +#define _WX_DECLARE_OBJARRAY(T, name, classexp) \ typedef int (CMPFUNC_CONV *CMPFUNC##T)(T** pItem1, T** pItem2); \ -class WXDLLEXPORT name : public wxBaseArray \ +classexp name : public wxBaseArray \ { \ public: \ name() { } \ @@ -302,131 +309,202 @@ public: \ void Insert(const T* pItem, size_t uiIndex) \ { wxBaseArray::Insert((long)pItem, uiIndex); } \ \ - void Empty(); \ + void Empty() { DoEmpty(); wxBaseArray::Empty(); } \ + void Clear() { DoEmpty(); wxBaseArray::Clear(); } \ \ - 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); \ + wxBaseArray::RemoveAt(uiIndex); return p; } \ + void RemoveAt(size_t uiIndex); \ \ void Sort(CMPFUNC##T fCmp) { wxBaseArray::Sort((CMPFUNC)fCmp); } \ \ private: \ + void DoEmpty(); \ void DoCopy(const name& src); \ } +// ============================================================================ +// The public macros for declaration and definition of the dynamic arrays +// ============================================================================ + +// Please note that for each macro WX_FOO_ARRAY we also have +// WX_FOO_EXPORTED_ARRAY and WX_FOO_USER_EXPORTED_ARRAY which are exactly the +// same except that they use an additional __declspec(dllexport) or equivalent +// under Windows if needed. +// +// The first (just EXPORTED) macros do it if wxWindows was compiled as a DLL +// and so must be used used inside the library. The second kind (USER_EXPORTED) +// allow the user code to do it when it wants. This is needed if you have a dll +// that wants to export a wxArray daubed with your own import/export goo. +// +// Finally, you can define the macro below as something special to modify the +// arrays defined by a simple WX_FOO_ARRAY as well. By default is is empty. +#define wxARRAY_DEFAULT_EXPORT + +// ---------------------------------------------------------------------------- +// WX_DEFINE_ARRAY(T, name) define an array class named "name" containing the +// elements of simple type T such that sizeof(T) <= sizeof(long) +// +// Note that the class defined has only inline function and doesn't take any +// space at all so there is no size penalty for defining multiple array classes // ---------------------------------------------------------------------------- -/** @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 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. - */ +#define WX_DEFINE_ARRAY(T, name) \ + WX_DEFINE_USER_EXPORTED_ARRAY(T, name, wxARRAY_DEFAULT_EXPORT) + +#define WX_DEFINE_EXPORTED_ARRAY(T, name) \ + WX_DEFINE_USER_EXPORTED_ARRAY(T, name, WXDLLEXPORT) + +#define WX_DEFINE_USER_EXPORTED_ARRAY(T, name, expmode) \ + typedef T _wxArray##name; \ + _WX_DEFINE_ARRAY(_wxArray##name, name, class expmode) + // ---------------------------------------------------------------------------- +// WX_DEFINE_SORTED_ARRAY: this is the same as the previous macro, but it +// defines a sorted array. +// +// Differences: +// 1) it must be given a COMPARE function in ctor which takes 2 items of type +// T* and should return -1, 0 or +1 if the first one is less/greater +// than/equal to the second one. +// 2) the Add() method inserts the item in such was that the array is always +// sorted (it uses the COMPARE function) +// 3) it has no Sort() method because it's always sorted +// 4) Index() method is much faster (the sorted arrays use binary search +// instead of linear one), but Add() is slower. +// 5) there is no Insert() method because you can't insert an item into the +// given position in a sorted array but there is IndexForInsert()/AddAt() +// pair which may be used to optimize a common operation of "insert only if +// not found" +// +// Note that you have to specify the comparison function when creating the +// objects of this array type. If, as in 99% of cases, the comparison function +// is the same for all objects of a class, WX_DEFINE_SORTED_ARRAY_CMP below is +// more convenient. +// +// Summary: use this class when the speed of Index() function is important, use +// the normal arrays otherwise. +// ---------------------------------------------------------------------------- + +#define wxARRAY_EMPTY_CMP + +#define WX_DEFINE_SORTED_ARRAY(T, name) \ + WX_DEFINE_SORTED_USER_EXPORTED_ARRAY(T, name, wxARRAY_DEFAULT_EXPORT) + +#define WX_DEFINE_SORTED_EXPORTED_ARRAY(T, name) \ + WX_DEFINE_SORTED_USER_EXPORTED_ARRAY(T, name, WXDLLEXPORT) + +#define WX_DEFINE_SORTED_USER_EXPORTED_ARRAY(T, name, expmode) \ + typedef T _wxArray##name; \ + _WX_DEFINE_SORTED_ARRAY(_wxArray##name, name, wxARRAY_EMPTY_CMP, class expmode) + +// ---------------------------------------------------------------------------- +// WX_DEFINE_SORTED_ARRAY_CMP: exactly the same as above but the comparison +// function is provided by this macro and the objects of this class have a +// default constructor which just uses it. +// +// The arguments are: the element type, the comparison function and the array +// name +// +// NB: this is, of course, how WX_DEFINE_SORTED_ARRAY() should have worked from +// the very beginning - unfortunately I didn't think about this earlier :-( +// ---------------------------------------------------------------------------- + +#define WX_DEFINE_SORTED_ARRAY_CMP(T, cmpfunc, name) \ + WX_DEFINE_SORTED_USER_EXPORTED_ARRAY_CMP(T, cmpfunc, name, \ + wxARRAY_DEFAULT_EXPORT) -//@{ - /** - This macro generates a new array class. It is intended for storage of simple - types of sizeof()<=sizeof(long) or pointers if sizeof(pointer)<=sizeof(long) -
- NB: it has only inline functions => takes no space at all -
- - @memo declare and define array class 'name' containing elements of type 'T' - */ -#define WX_DEFINE_ARRAY(T, name) typedef T _A##name; \ - _WX_DEFINE_ARRAY(_A##name, name) - - /** - This macro does the same as WX_DEFINE_ARRAY except that the array will be - sorted with the specified compare function. - */ -#define WX_DEFINE_SORTED_ARRAY(T, name) typedef T _A##name; \ - _WX_DEFINE_SORTED_ARRAY(_A##name, name) - - /** - 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 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 array -
- 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 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 objarray class 'name' containing elements of type 'T' - */ -#define WX_DECLARE_OBJARRAY(T, name) typedef T _L##name; \ - _WX_DECLARE_OBJARRAY(_L##name, name) - /** - To use an objarray class you must - -
  • #include "dynarray.h" -
  • 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_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 arrimpl.cpp!) objarray class 'name' - */ -#define WX_DEFINE_OBJARRAY(name) "don't forget to include arrimpl.cpp!" -//@} +#define WX_DEFINE_SORTED_EXPORTED_ARRAY_CMP(T, cmpfunc, name) \ + WX_DEFINE_SORTED_USER_EXPORTED_ARRAY_CMP(T, cmpfunc, name, WXDLLEXPORT) + +#define WX_DEFINE_SORTED_USER_EXPORTED_ARRAY_CMP(T, cmpfunc, name, expmode) \ + typedef T _wxArray##name; \ + _WX_DEFINE_SORTED_ARRAY(_wxArray##name, name, = cmpfunc, class expmode) // ---------------------------------------------------------------------------- -/** @name Some commonly used predefined arrays */ -// # overhead if not used? +// WX_DECLARE_OBJARRAY(T, name): this macro generates a new array class +// named "name" which owns the objects of type T 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 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 array +// 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 array to it's base type: as dtor is not virtual +// and so you risk having at least the memory leaks and probably worse +// +// Some functions of this class are not inline, so it takes some space to +// define new class from this template even if you don't use it - which is not +// the case for the simple (non-object) array classes +// +// +// To use an objarray class you must +// #include "dynarray.h" +// WX_DECLARE_OBJARRAY(element_type, list_class_name) +// #include "arrimpl.cpp" +// WX_DEFINE_OBJARRAY(list_class_name) // name must be the same as above! +// +// This is necessary because at the moment of DEFINE_OBJARRAY class parsing the +// 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. // ---------------------------------------------------------------------------- -//@{ - /** @name ArrayInt */ -WX_DEFINE_ARRAY(int, wxArrayInt); - /** @name ArrayLong */ -WX_DEFINE_ARRAY(long, wxArrayLong); - /** @name ArrayPtrVoid */ -WX_DEFINE_ARRAY(void *, wxArrayPtrVoid); -//@} +#define WX_DECLARE_OBJARRAY(T, name) \ + WX_DECLARE_USER_EXPORTED_OBJARRAY(T, name, wxARRAY_DEFAULT_EXPORT) + +#define WX_DECLARE_EXPORTED_OBJARRAY(T, name) \ + WX_DECLARE_USER_EXPORTED_OBJARRAY(T, name, WXDLLEXPORT) + +#define WX_DECLARE_USER_EXPORTED_OBJARRAY(T, name, expmode) \ + typedef T _wxObjArray##name; \ + _WX_DECLARE_OBJARRAY(_wxObjArray##name, name, class expmode) -//@} +// WX_DEFINE_OBJARRAY is going to be redefined when arrimpl.cpp is included, +// try to provoke a human-understandable error if it used incorrectly. +// +// there is no real need for 3 different macros in the DEFINE case but do it +// anyhow for consistency +#define WX_DEFINE_OBJARRAY(name) DidYouIncludeArrimplCpp +#define WX_DEFINE_EXPORTED_OBJARRAY(name) WX_DEFINE_OBJARRAY(name) +#define WX_DEFINE_USER_EXPORTED_OBJARRAY(name) WX_DEFINE_OBJARRAY(name) + +// ---------------------------------------------------------------------------- +// Some commonly used predefined arrays +// ---------------------------------------------------------------------------- + +WX_DEFINE_EXPORTED_ARRAY(int, wxArrayInt); +WX_DEFINE_EXPORTED_ARRAY(long, wxArrayLong); +WX_DEFINE_EXPORTED_ARRAY(void *, wxArrayPtrVoid); // ----------------------------------------------------------------------------- -// convinience macros +// convenience macros // ----------------------------------------------------------------------------- +// append all element of one array to another one +#define WX_APPEND_ARRAY(array, other) \ + { \ + size_t count = (other).Count(); \ + for ( size_t n = 0; n < count; n++ ) \ + { \ + (array).Add((other)[n]); \ + } \ + } + // delete all array elements // // NB: the class declaration of the array elements must be visible from the @@ -435,13 +513,14 @@ WX_DEFINE_ARRAY(void *, wxArrayPtrVoid); // count on it)! #define WX_CLEAR_ARRAY(array) \ { \ - size_t count = array.Count(); \ + size_t count = (array).Count(); \ for ( size_t n = 0; n < count; n++ ) \ { \ - delete array[n]; \ + delete (array)[n]; \ } \ \ - array.Empty(); \ + (array).Empty(); \ } + #endif // _DYNARRAY_H