2001-07-07 19:16:38 -04:00
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///////////////////////////////////////////////////////////////////////////////
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// Name: wx/vector.h
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// Purpose: STL vector clone
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// Author: Lindsay Mathieson
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2007-07-07 06:09:42 -04:00
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// Modified by: Vaclav Slavik - make it a template
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2001-07-07 19:16:38 -04:00
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// Created: 30.07.2001
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2007-07-07 06:09:42 -04:00
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// Copyright: (c) 2001 Lindsay Mathieson <lindsay@mathieson.org>,
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// 2007 Vaclav Slavik <vslavik@fastmail.fm>
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2004-05-23 16:53:33 -04:00
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// Licence: wxWindows licence
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2001-07-07 19:16:38 -04:00
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///////////////////////////////////////////////////////////////////////////////
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#ifndef _WX_VECTOR_H_
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#define _WX_VECTOR_H_
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#include "wx/defs.h"
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2007-07-25 06:19:08 -04:00
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#if wxUSE_STL
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2007-07-07 06:09:42 -04:00
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#include <vector>
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2010-04-07 18:23:45 -04:00
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#include <algorithm>
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2007-07-07 06:09:42 -04:00
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#define wxVector std::vector
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2010-04-07 16:32:25 -04:00
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template<typename T>
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inline void wxVectorSort(wxVector<T>& v)
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{
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std::sort(v.begin(), v.end());
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}
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2007-07-07 06:09:42 -04:00
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#else // !wxUSE_STL
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2008-01-21 03:45:19 -05:00
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#include "wx/utils.h"
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2008-10-09 07:27:59 -04:00
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#include "wx/scopeguard.h"
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2008-01-22 06:29:21 -05:00
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#include "wx/meta/movable.h"
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#include "wx/meta/if.h"
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2008-01-21 03:45:19 -05:00
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2008-01-02 17:58:29 -05:00
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#include "wx/beforestd.h"
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#include <new> // for placement new
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#include "wx/afterstd.h"
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2008-01-22 06:29:21 -05:00
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namespace wxPrivate
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{
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// These templates encapsulate memory operations for use by wxVector; there are
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// two implementations, both in generic way for any C++ types and as an
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// optimized version for "movable" types that uses realloc() and memmove().
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// version for movable types:
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template<typename T>
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struct wxVectorMemOpsMovable
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{
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static void Free(T* array)
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{ free(array); }
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static T* Realloc(T* old, size_t newCapacity, size_t WXUNUSED(occupiedSize))
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{ return (T*)realloc(old, newCapacity * sizeof(T)); }
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static void MemmoveBackward(T* dest, T* source, size_t count)
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{ memmove(dest, source, count * sizeof(T)); }
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static void MemmoveForward(T* dest, T* source, size_t count)
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{ memmove(dest, source, count * sizeof(T)); }
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};
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// generic version for non-movable types:
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template<typename T>
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struct wxVectorMemOpsGeneric
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{
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static void Free(T* array)
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{ ::operator delete(array); }
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static T* Realloc(T* old, size_t newCapacity, size_t occupiedSize)
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{
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T *mem = (T*)::operator new(newCapacity * sizeof(T));
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for ( size_t i = 0; i < occupiedSize; i++ )
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{
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2008-11-09 07:34:21 -05:00
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::new(mem + i) T(old[i]);
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2008-01-22 06:29:21 -05:00
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old[i].~T();
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}
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::operator delete(old);
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return mem;
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}
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static void MemmoveBackward(T* dest, T* source, size_t count)
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{
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wxASSERT( dest < source );
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T* destptr = dest;
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T* sourceptr = source;
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for ( size_t i = count; i > 0; --i, ++destptr, ++sourceptr )
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{
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2008-11-10 18:55:01 -05:00
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::new(destptr) T(*sourceptr);
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2008-01-22 06:29:21 -05:00
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sourceptr->~T();
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}
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}
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static void MemmoveForward(T* dest, T* source, size_t count)
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{
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wxASSERT( dest > source );
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T* destptr = dest + count - 1;
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T* sourceptr = source + count - 1;
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for ( size_t i = count; i > 0; --i, --destptr, --sourceptr )
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{
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2008-11-10 18:55:01 -05:00
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::new(destptr) T(*sourceptr);
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2008-01-22 06:29:21 -05:00
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sourceptr->~T();
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}
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}
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};
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} // namespace wxPrivate
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2007-07-07 06:09:42 -04:00
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template<typename T>
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class wxVector
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2001-07-07 19:16:38 -04:00
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{
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2008-01-31 06:26:52 -05:00
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private:
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2008-01-31 12:21:41 -05:00
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// This cryptic expression means "typedef Ops to wxVectorMemOpsMovable if
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2008-01-31 06:26:52 -05:00
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// type T is movable type, otherwise to wxVectorMemOpsGeneric".
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//
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// Note that we use typedef instead of privately deriving from this (which
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// would allowed us to omit "Ops::" prefixes below) to keep VC6 happy,
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// it can't compile code that derives from wxIf<...>::value.
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typedef typename wxIf< wxIsMovable<T>::value,
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wxPrivate::wxVectorMemOpsMovable<T>,
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wxPrivate::wxVectorMemOpsGeneric<T> >::value
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Ops;
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2002-12-09 13:08:12 -05:00
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public:
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2002-12-08 13:38:46 -05:00
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typedef size_t size_type;
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2008-09-16 08:43:11 -04:00
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typedef size_t difference_type;
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2007-07-07 06:09:42 -04:00
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typedef T value_type;
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2008-09-16 08:43:11 -04:00
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typedef value_type* pointer;
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2007-07-25 06:19:08 -04:00
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typedef value_type* iterator;
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2007-08-21 11:47:47 -04:00
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typedef const value_type* const_iterator;
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2007-07-25 06:19:08 -04:00
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typedef value_type& reference;
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2007-07-07 06:09:42 -04:00
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2008-09-16 08:43:11 -04:00
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class reverse_iterator
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{
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public:
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reverse_iterator() : m_ptr(NULL) { }
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wxEXPLICIT reverse_iterator(iterator it) : m_ptr(it) { }
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reverse_iterator(const reverse_iterator& it) : m_ptr(it.m_ptr) { }
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2008-10-19 06:16:47 -04:00
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2008-09-16 08:43:11 -04:00
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reference operator*() const { return *m_ptr; }
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pointer operator->() const { return m_ptr; }
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2008-10-19 06:16:47 -04:00
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2008-09-16 08:43:11 -04:00
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iterator base() const { return m_ptr; }
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2008-10-19 06:16:47 -04:00
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reverse_iterator& operator++()
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{ --m_ptr; return *this; }
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2008-09-16 08:43:11 -04:00
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reverse_iterator operator++(int)
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2008-10-19 06:16:47 -04:00
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{ reverse_iterator tmp = *this; --m_ptr; return tmp; }
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reverse_iterator& operator--()
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{ ++m_ptr; return *this; }
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reverse_iterator operator--(int)
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{ reverse_iterator tmp = *this; ++m_ptr; return tmp; }
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2008-09-16 08:43:11 -04:00
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reverse_iterator operator+(difference_type n) const
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2008-10-19 06:16:47 -04:00
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{ return reverse_iterator(m_ptr - n); }
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2008-09-16 08:43:11 -04:00
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reverse_iterator& operator+=(difference_type n)
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2008-10-19 06:16:47 -04:00
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{ m_ptr -= n; return *this; }
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2008-09-16 08:43:11 -04:00
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reverse_iterator operator-(difference_type n) const
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2008-10-19 06:16:47 -04:00
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{ return reverse_iterator(m_ptr + n); }
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2008-09-16 08:43:11 -04:00
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reverse_iterator& operator-=(difference_type n)
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2008-10-19 06:16:47 -04:00
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{ m_ptr += n; return *this; }
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2008-09-16 08:43:11 -04:00
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reference operator[](difference_type n) const
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2008-10-19 06:16:47 -04:00
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{ return *(*this + n); }
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bool operator ==(const reverse_iterator& it) const
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{ return m_ptr == it.m_ptr; }
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2008-09-16 08:43:11 -04:00
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bool operator !=(const reverse_iterator& it) const
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2008-10-19 06:16:47 -04:00
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{ return m_ptr != it.m_ptr; }
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2008-09-16 08:43:11 -04:00
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private:
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value_type *m_ptr;
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};
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2007-08-21 11:47:47 -04:00
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wxVector() : m_size(0), m_capacity(0), m_values(NULL) {}
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2007-07-07 06:09:42 -04:00
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2009-05-28 05:49:20 -04:00
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wxVector(size_type p_size)
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2008-12-11 08:45:04 -05:00
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: m_size(0), m_capacity(0), m_values(NULL)
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2008-11-29 17:28:44 -05:00
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{
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2009-05-28 05:49:20 -04:00
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reserve(p_size);
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for ( size_t n = 0; n < p_size; n++ )
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2008-11-29 17:28:44 -05:00
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push_back(value_type());
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}
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2009-05-28 05:49:20 -04:00
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wxVector(size_type p_size, const value_type& v)
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2008-12-11 08:45:04 -05:00
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: m_size(0), m_capacity(0), m_values(NULL)
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2008-11-29 17:28:44 -05:00
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{
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2009-05-28 05:49:20 -04:00
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reserve(p_size);
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for ( size_t n = 0; n < p_size; n++ )
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2008-11-29 17:28:44 -05:00
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push_back(v);
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}
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2008-08-03 19:58:24 -04:00
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wxVector(const wxVector& c) : m_size(0), m_capacity(0), m_values(NULL)
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2007-07-07 06:09:42 -04:00
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{
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2007-08-21 11:47:47 -04:00
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Copy(c);
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2007-07-07 06:09:42 -04:00
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}
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~wxVector()
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{
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clear();
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}
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2009-07-12 13:00:29 -04:00
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void swap(wxVector& v)
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{
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wxSwap(m_size, v.m_size);
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wxSwap(m_capacity, v.m_capacity);
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wxSwap(m_values, v.m_values);
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}
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2007-07-07 06:09:42 -04:00
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void clear()
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{
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2008-01-02 17:58:29 -05:00
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// call destructors of stored objects:
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for ( size_type i = 0; i < m_size; i++ )
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{
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2008-01-10 07:10:03 -05:00
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m_values[i].~T();
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2008-01-02 17:58:29 -05:00
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}
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2008-01-31 06:26:52 -05:00
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Ops::Free(m_values);
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2007-08-21 11:47:47 -04:00
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m_values = NULL;
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2008-08-03 19:58:24 -04:00
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m_size =
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m_capacity = 0;
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2007-07-07 06:09:42 -04:00
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}
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void reserve(size_type n)
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{
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2007-08-21 11:47:47 -04:00
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if ( n <= m_capacity )
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return;
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// increase the size twice, unless we're already too big or unless
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// more is requested
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2007-10-02 07:36:35 -04:00
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//
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2008-01-02 17:58:29 -05:00
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// NB: casts to size_type are needed to suppress mingw32 warnings about
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2007-10-02 07:36:35 -04:00
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// mixing enums and ints in the same expression
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const size_type increment = m_size > 0
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? wxMin(m_size, (size_type)ALLOC_MAX_SIZE)
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: (size_type)ALLOC_INITIAL_SIZE;
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2007-08-21 11:47:47 -04:00
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if ( m_capacity + increment > n )
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n = m_capacity + increment;
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2008-01-31 06:26:52 -05:00
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m_values = Ops::Realloc(m_values, n * sizeof(value_type), m_size);
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2007-08-21 11:47:47 -04:00
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m_capacity = n;
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2007-07-07 06:09:42 -04:00
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}
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2008-12-11 08:45:04 -05:00
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void resize(size_type n)
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{
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if ( n < m_size )
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Shrink(n);
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else if ( n > m_size )
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Extend(n, value_type());
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}
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void resize(size_type n, const value_type& v)
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{
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if ( n < m_size )
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Shrink(n);
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else if ( n > m_size )
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Extend(n, v);
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}
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2007-07-07 06:09:42 -04:00
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size_type size() const
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{
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return m_size;
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}
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size_type capacity() const
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{
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return m_capacity;
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}
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bool empty() const
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{
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return size() == 0;
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}
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wxVector& operator=(const wxVector& vb)
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{
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2008-11-16 13:03:08 -05:00
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if (this != &vb)
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{
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clear();
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Copy(vb);
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}
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2007-07-07 06:09:42 -04:00
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return *this;
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}
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2007-08-21 11:47:47 -04:00
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void push_back(const value_type& v)
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2007-07-07 06:09:42 -04:00
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{
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2007-08-21 11:47:47 -04:00
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reserve(size() + 1);
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2008-01-02 17:58:29 -05:00
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// use placement new to initialize new object in preallocated place in
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// m_values and store 'v' in it:
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void* const place = m_values + m_size;
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2008-11-09 07:34:21 -05:00
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::new(place) value_type(v);
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2008-01-02 17:58:29 -05:00
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// only increase m_size if the ctor didn't throw an exception; notice
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// that if it _did_ throw, everything is OK, because we only increased
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// vector's capacity so far and possibly written some data to
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// uninitialized memory at the end of m_values
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m_size++;
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2007-07-07 06:09:42 -04:00
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}
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void pop_back()
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{
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2007-08-21 11:47:47 -04:00
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erase(end() - 1);
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2007-07-07 06:09:42 -04:00
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}
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const value_type& at(size_type idx) const
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{
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wxASSERT(idx < m_size);
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2007-08-21 11:47:47 -04:00
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return m_values[idx];
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2007-07-07 06:09:42 -04:00
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}
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value_type& at(size_type idx)
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{
|
|
|
|
wxASSERT(idx < m_size);
|
2007-08-21 11:47:47 -04:00
|
|
|
return m_values[idx];
|
2007-07-07 06:09:42 -04:00
|
|
|
}
|
2001-07-07 19:16:38 -04:00
|
|
|
|
2007-07-07 06:09:42 -04:00
|
|
|
const value_type& operator[](size_type idx) const { return at(idx); }
|
|
|
|
value_type& operator[](size_type idx) { return at(idx); }
|
|
|
|
const value_type& front() const { return at(0); }
|
|
|
|
value_type& front() { return at(0); }
|
|
|
|
const value_type& back() const { return at(size() - 1); }
|
|
|
|
value_type& back() { return at(size() - 1); }
|
|
|
|
|
2007-08-21 11:47:47 -04:00
|
|
|
const_iterator begin() const { return m_values; }
|
|
|
|
iterator begin() { return m_values; }
|
|
|
|
const_iterator end() const { return m_values + size(); }
|
|
|
|
iterator end() { return m_values + size(); }
|
2007-07-25 06:19:08 -04:00
|
|
|
|
2008-09-16 08:43:11 -04:00
|
|
|
reverse_iterator rbegin() { return reverse_iterator(end() - 1); }
|
|
|
|
reverse_iterator rend() { return reverse_iterator(begin() - 1); }
|
|
|
|
|
2007-08-21 11:47:47 -04:00
|
|
|
iterator insert(iterator it, const value_type& v = value_type())
|
2007-07-26 20:17:27 -04:00
|
|
|
{
|
2008-01-02 17:58:29 -05:00
|
|
|
// NB: this must be done before reserve(), because reserve()
|
|
|
|
// invalidates iterators!
|
|
|
|
const size_t idx = it - begin();
|
|
|
|
const size_t after = end() - it;
|
2007-07-26 20:17:27 -04:00
|
|
|
|
2007-08-21 11:47:47 -04:00
|
|
|
reserve(size() + 1);
|
2007-08-21 06:59:42 -04:00
|
|
|
|
2008-10-09 07:27:59 -04:00
|
|
|
// the place where the new element is going to be inserted
|
|
|
|
value_type * const place = m_values + idx;
|
|
|
|
|
2008-01-02 17:58:29 -05:00
|
|
|
// unless we're inserting at the end, move following elements out of
|
2007-08-21 11:47:47 -04:00
|
|
|
// the way:
|
2008-01-02 17:58:29 -05:00
|
|
|
if ( after > 0 )
|
2008-10-09 07:27:59 -04:00
|
|
|
Ops::MemmoveForward(place + 1, place, after);
|
2008-01-02 17:58:29 -05:00
|
|
|
|
2008-10-09 07:27:59 -04:00
|
|
|
// if the ctor called below throws an exception, we need to move all
|
|
|
|
// the elements back to their original positions in m_values
|
|
|
|
wxScopeGuard moveBack = wxMakeGuard(
|
|
|
|
Ops::MemmoveBackward, place, place + 1, after);
|
|
|
|
if ( !after )
|
|
|
|
moveBack.Dismiss();
|
|
|
|
|
|
|
|
// use placement new to initialize new object in preallocated place in
|
|
|
|
// m_values and store 'v' in it:
|
2008-11-10 18:55:01 -05:00
|
|
|
::new(place) value_type(v);
|
2007-07-07 06:09:42 -04:00
|
|
|
|
2008-10-09 07:27:59 -04:00
|
|
|
// now that we did successfully add the new element, increment the size
|
|
|
|
// and disable moving the items back
|
|
|
|
moveBack.Dismiss();
|
2007-08-21 11:47:47 -04:00
|
|
|
m_size++;
|
2001-07-07 19:16:38 -04:00
|
|
|
|
2007-08-21 11:47:47 -04:00
|
|
|
return begin() + idx;
|
2005-04-01 19:34:04 -05:00
|
|
|
}
|
2001-07-07 19:16:38 -04:00
|
|
|
|
2007-08-21 11:47:47 -04:00
|
|
|
iterator erase(iterator it)
|
2001-07-07 19:16:38 -04:00
|
|
|
{
|
2007-08-21 11:47:47 -04:00
|
|
|
return erase(it, it + 1);
|
2005-04-01 19:34:04 -05:00
|
|
|
}
|
2001-07-07 19:16:38 -04:00
|
|
|
|
2007-08-21 11:47:47 -04:00
|
|
|
iterator erase(iterator first, iterator last)
|
2007-07-25 06:19:08 -04:00
|
|
|
{
|
2007-08-21 11:47:47 -04:00
|
|
|
if ( first == last )
|
|
|
|
return first;
|
|
|
|
wxASSERT( first < end() && last <= end() );
|
2007-07-26 20:17:27 -04:00
|
|
|
|
2008-01-02 17:58:29 -05:00
|
|
|
const size_type idx = first - begin();
|
|
|
|
const size_type count = last - first;
|
|
|
|
const size_type after = end() - last;
|
2007-07-25 06:19:08 -04:00
|
|
|
|
2008-01-02 17:58:29 -05:00
|
|
|
// erase elements by calling their destructors:
|
|
|
|
for ( iterator i = first; i < last; ++i )
|
2008-01-22 06:29:21 -05:00
|
|
|
i->~T();
|
2007-08-21 11:47:47 -04:00
|
|
|
|
2008-01-02 17:58:29 -05:00
|
|
|
// once that's done, move following elements over to the freed space:
|
|
|
|
if ( after > 0 )
|
|
|
|
{
|
2008-01-31 06:26:52 -05:00
|
|
|
Ops::MemmoveBackward(m_values + idx, m_values + idx + count, after);
|
2008-01-02 17:58:29 -05:00
|
|
|
}
|
2007-07-26 20:17:27 -04:00
|
|
|
|
2007-07-25 06:19:08 -04:00
|
|
|
m_size -= count;
|
2007-08-21 11:47:47 -04:00
|
|
|
|
2008-01-02 17:58:29 -05:00
|
|
|
return begin() + idx;
|
2007-07-25 06:19:08 -04:00
|
|
|
}
|
2007-08-21 11:47:47 -04:00
|
|
|
|
|
|
|
#if WXWIN_COMPATIBILITY_2_8
|
|
|
|
wxDEPRECATED( size_type erase(size_type n) );
|
|
|
|
#endif // WXWIN_COMPATIBILITY_2_8
|
|
|
|
|
|
|
|
private:
|
2007-08-23 08:40:32 -04:00
|
|
|
// VC6 can't compile static const int members
|
|
|
|
enum { ALLOC_INITIAL_SIZE = 16 };
|
|
|
|
enum { ALLOC_MAX_SIZE = 4096 };
|
2007-08-21 11:47:47 -04:00
|
|
|
|
|
|
|
void Copy(const wxVector& vb)
|
2001-07-07 19:16:38 -04:00
|
|
|
{
|
2007-08-21 11:47:47 -04:00
|
|
|
reserve(vb.size());
|
2001-07-07 19:16:38 -04:00
|
|
|
|
2007-08-21 11:47:47 -04:00
|
|
|
for ( const_iterator i = vb.begin(); i != vb.end(); ++i )
|
|
|
|
push_back(*i);
|
2005-04-01 19:34:04 -05:00
|
|
|
}
|
2001-07-07 19:16:38 -04:00
|
|
|
|
2007-07-07 06:09:42 -04:00
|
|
|
private:
|
2008-12-11 08:45:04 -05:00
|
|
|
void Shrink(size_type n)
|
|
|
|
{
|
|
|
|
for ( size_type i = n; i < m_size; i++ )
|
|
|
|
m_values[i].~T();
|
|
|
|
m_size = n;
|
|
|
|
}
|
|
|
|
|
|
|
|
void Extend(size_type n, const value_type& v)
|
|
|
|
{
|
|
|
|
reserve(n);
|
|
|
|
for ( size_type i = m_size; i < n; i++ )
|
|
|
|
push_back(v);
|
|
|
|
}
|
|
|
|
|
2007-07-07 06:09:42 -04:00
|
|
|
size_type m_size,
|
|
|
|
m_capacity;
|
2007-08-21 11:47:47 -04:00
|
|
|
value_type *m_values;
|
2001-07-07 19:16:38 -04:00
|
|
|
};
|
|
|
|
|
2007-08-21 06:59:42 -04:00
|
|
|
#if WXWIN_COMPATIBILITY_2_8
|
|
|
|
template<typename T>
|
2007-12-19 19:53:24 -05:00
|
|
|
inline typename wxVector<T>::size_type wxVector<T>::erase(size_type n)
|
2007-08-21 06:59:42 -04:00
|
|
|
{
|
2007-08-21 11:47:47 -04:00
|
|
|
erase(begin() + n);
|
2007-08-21 06:59:42 -04:00
|
|
|
return n;
|
|
|
|
}
|
|
|
|
#endif // WXWIN_COMPATIBILITY_2_8
|
|
|
|
|
2010-04-07 16:32:25 -04:00
|
|
|
|
|
|
|
|
|
|
|
namespace wxPrivate
|
|
|
|
{
|
|
|
|
|
2010-04-11 13:38:01 -04:00
|
|
|
// This is a helper for the wxVectorSort function, and should not be used
|
|
|
|
// directly in user's code.
|
2010-04-07 16:32:25 -04:00
|
|
|
template<typename T>
|
2010-04-11 13:38:01 -04:00
|
|
|
struct wxVectorSort
|
2010-04-07 16:32:25 -04:00
|
|
|
{
|
2010-04-11 13:38:01 -04:00
|
|
|
static int wxCMPFUNC_CONV
|
|
|
|
Compare(const void* pitem1, const void* pitem2, const void* )
|
|
|
|
{
|
|
|
|
const T& item1 = *reinterpret_cast<const T*>(pitem1);
|
|
|
|
const T& item2 = *reinterpret_cast<const T*>(pitem2);
|
|
|
|
|
|
|
|
if (item1 < item2)
|
|
|
|
return -1;
|
|
|
|
else if (item2 < item1)
|
|
|
|
return 1;
|
|
|
|
else
|
|
|
|
return 0;
|
|
|
|
}
|
|
|
|
};
|
2010-04-07 16:32:25 -04:00
|
|
|
|
|
|
|
} // namespace wxPrivate
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
template<typename T>
|
|
|
|
void wxVectorSort(wxVector<T>& v)
|
|
|
|
{
|
|
|
|
wxQsort(v.begin(), v.size(), sizeof(T),
|
2010-04-11 13:38:01 -04:00
|
|
|
wxPrivate::wxVectorSort<T>::Compare, NULL);
|
2010-04-07 16:32:25 -04:00
|
|
|
}
|
|
|
|
|
|
|
|
|
|
|
|
|
2007-07-07 06:09:42 -04:00
|
|
|
#endif // wxUSE_STL/!wxUSE_STL
|
2002-12-08 13:38:46 -05:00
|
|
|
|
2007-07-07 06:09:42 -04:00
|
|
|
#if WXWIN_COMPATIBILITY_2_8
|
|
|
|
#define WX_DECLARE_VECTORBASE(obj, cls) typedef wxVector<obj> cls
|
|
|
|
#define _WX_DECLARE_VECTOR(obj, cls, exp) WX_DECLARE_VECTORBASE(obj, cls)
|
|
|
|
#define WX_DECLARE_VECTOR(obj, cls) WX_DECLARE_VECTORBASE(obj, cls)
|
|
|
|
#endif // WXWIN_COMPATIBILITY_2_8
|
2001-07-07 19:16:38 -04:00
|
|
|
|
2007-07-07 06:09:42 -04:00
|
|
|
#endif // _WX_VECTOR_H_
|