#include "wx/defs.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 <B>not</B> 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:
/** @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:
};
// ============================================================================
-// template classes
+// The private helper macros containing the core of the array classes
// ============================================================================
-// resolves the name conflict between the wxT() macor and T typedef: we can't
-// use wxT() inside WX_DEFINE_ARRAY!
-#define _WX_ERROR_SIZEOF wxT("illegal use of DEFINE_ARRAY")
-#define _WX_ERROR_REMOVE wxT("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
// ----------------------------------------------------------------------------
-// __MAC_X__ added min ~name() below for compiling Mac X
+
#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); \
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() { } \
\
name& operator=(const name& src) \
{ wxBaseArray* temp = (wxBaseArray*) this; \
}
// ----------------------------------------------------------------------------
-// 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"
-//
-// 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, classexp) \
+
+#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); \
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; \
}
// ----------------------------------------------------------------------------
-// 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, classexp) \
typedef int (CMPFUNC_CONV *CMPFUNC##T)(T** pItem1, T** pItem2); \
classexp name : public wxBaseArray \
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::RemoveAt(uiIndex); return p; } \
void RemoveAt(size_t uiIndex); \
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.
- <BR>
- <BR>
- Range checking is performed in debug build for both arrays and objarrays.
- Type checking is done at compile-time. Warning: arrays <I>never</I> shrink,
- they only grow, so loading 10 millions in an array only to delete them 2
- lines below is <I>not</I> 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.
// ----------------------------------------------------------------------------
-//@{
- /**
- 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)
- <BR>
- NB: it has only inline functions => takes no space at all
- <BR>
-
- @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, class)
-
- /**
- 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, class)
-
- /**
- 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. <BR>
- Don't use this for simple types such as "int" or "long"!
- You _may_ use it for "double" but it's awfully inefficient.
- <BR>
- <BR>
- Note on Add/Insert functions:
- <BR>
- 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
- <BR>
- 2) function(T&) will create a copy of the object and work with it
- <BR>
- <BR>
- Also:
- <BR>
- 1) Remove() will delete the object after removing it from the array
- <BR>
- 2) Detach() just removes the object from the array (returning pointer to it)
- <BR>
- <BR>
- NB1: Base type T should have an accessible copy ctor if Add(T&) is used,
- <BR>
- NB2: Never ever cast a array to it's base type: as dtor is <B>not</B> virtual
- it will provoke memory leaks
- <BR>
- <BR>
- 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, class)
-
- /**
- To use an objarray class you must
- <ll>
- <li>#include "dynarray.h"
- <li>WX_DECLARE_OBJARRAY(element_type, list_class_name)
- <li>#include "arrimpl.cpp"
- <li>WX_DEFINE_OBJARRAY(list_class_name) // same as above!
- </ll>
- <BR><BR>
- 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!"
-//@}
-
-// these macros do the same thing as the WX_XXX ones above, but should be used
-// inside the library for user visible classes because otherwise they wouldn't
-// be visible from outside (when using wxWindows as DLL under Windows)
-#define WX_DEFINE_EXPORTED_ARRAY(T, name) \
- typedef T _A##name; \
- _WX_DEFINE_ARRAY(_A##name, name, class WXDLLEXPORT)
-
-#define WX_DEFINE_SORTED_EXPORTED_ARRAY(T, name) \
- typedef T _A##name; \
- _WX_DEFINE_SORTED_ARRAY(_A##name, name, class WXDLLEXPORT)
+#define wxARRAY_EMPTY_CMP
-#define WX_DEFINE_EXPORTED_OBJARRAY(name) WX_DEFINE_OBJARRAY(name)
-#define WX_DECLARE_EXPORTED_OBJARRAY(T, name) \
- typedef T _L##name; \
- _WX_DECLARE_OBJARRAY(_L##name, name, class WXDLLEXPORT)
+#define WX_DEFINE_SORTED_ARRAY(T, name) \
+ WX_DEFINE_SORTED_USER_EXPORTED_ARRAY(T, name, wxARRAY_DEFAULT_EXPORT)
-// ..and likewise these macros do very same thing as the ones above them too,
-// but allow the user to specify the export spec. Needed if you have a dll
-// that wants to export a wxArray daubed with your own import/export goo.
-#define WX_DEFINE_USER_EXPORTED_ARRAY(T, name, usergoo) \
- typedef T _A##name; \
- _WX_DEFINE_ARRAY(_A##name, name, class usergoo)
+#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)
+
+#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)
+
+// ----------------------------------------------------------------------------
+// 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.
+// ----------------------------------------------------------------------------
+
+#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_DEFINE_SORTED_USER_EXPORTED_ARRAY(T, name, usergoo) \
- typedef T _A##name; \
- _WX_DEFINE_SORTED_ARRAY(_A##name, name, class usergoo)
+#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)
-#define WX_DECLARE_USER_EXPORTED_OBJARRAY(T, name, usergoo) \
- typedef T _L##name; \
- _WX_DECLARE_OBJARRAY(_L##name, name, class usergoo)
// ----------------------------------------------------------------------------
-/** @name Some commonly used predefined arrays */
+// Some commonly used predefined arrays
// ----------------------------------------------------------------------------
-//@{
- /** @name ArrayInt */
WX_DEFINE_EXPORTED_ARRAY(int, wxArrayInt);
- /** @name ArrayLong */
WX_DEFINE_EXPORTED_ARRAY(long, wxArrayLong);
- /** @name ArrayPtrVoid */
WX_DEFINE_EXPORTED_ARRAY(void *, wxArrayPtrVoid);
-//@}
-
-//@}
// -----------------------------------------------------------------------------
// convenience macros
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