#else // !wxUSE_STL
#include "wx/utils.h"
+#include "wx/scopeguard.h"
#include "wx/meta/movable.h"
#include "wx/meta/if.h"
T *mem = (T*)::operator new(newCapacity * sizeof(T));
for ( size_t i = 0; i < occupiedSize; i++ )
{
- new(mem + i) T(old[i]);
+ ::new(mem + i) T(old[i]);
old[i].~T();
}
::operator delete(old);
T* sourceptr = source;
for ( size_t i = count; i > 0; --i, ++destptr, ++sourceptr )
{
- new(destptr) T(*sourceptr);
+ ::new(destptr) T(*sourceptr);
sourceptr->~T();
}
}
T* sourceptr = source + count - 1;
for ( size_t i = count; i > 0; --i, --destptr, --sourceptr )
{
- new(destptr) T(*sourceptr);
+ ::new(destptr) T(*sourceptr);
sourceptr->~T();
}
}
class wxVector
{
private:
- // Tthis cryptic expression means "typedef Ops to wxVectorMemOpsMovable if
+ // This cryptic expression means "typedef Ops to wxVectorMemOpsMovable if
// type T is movable type, otherwise to wxVectorMemOpsGeneric".
//
// Note that we use typedef instead of privately deriving from this (which
public:
typedef size_t size_type;
+ typedef size_t difference_type;
typedef T value_type;
+ typedef value_type* pointer;
typedef value_type* iterator;
typedef const value_type* const_iterator;
typedef value_type& reference;
+ class reverse_iterator
+ {
+ public:
+ reverse_iterator() : m_ptr(NULL) { }
+ wxEXPLICIT reverse_iterator(iterator it) : m_ptr(it) { }
+ reverse_iterator(const reverse_iterator& it) : m_ptr(it.m_ptr) { }
+
+ reference operator*() const { return *m_ptr; }
+ pointer operator->() const { return m_ptr; }
+
+ iterator base() const { return m_ptr; }
+
+ reverse_iterator& operator++()
+ { --m_ptr; return *this; }
+ reverse_iterator operator++(int)
+ { reverse_iterator tmp = *this; --m_ptr; return tmp; }
+ reverse_iterator& operator--()
+ { ++m_ptr; return *this; }
+ reverse_iterator operator--(int)
+ { reverse_iterator tmp = *this; ++m_ptr; return tmp; }
+
+ reverse_iterator operator+(difference_type n) const
+ { return reverse_iterator(m_ptr - n); }
+ reverse_iterator& operator+=(difference_type n)
+ { m_ptr -= n; return *this; }
+ reverse_iterator operator-(difference_type n) const
+ { return reverse_iterator(m_ptr + n); }
+ reverse_iterator& operator-=(difference_type n)
+ { m_ptr += n; return *this; }
+
+ reference operator[](difference_type n) const
+ { return *(*this + n); }
+
+ bool operator ==(const reverse_iterator& it) const
+ { return m_ptr == it.m_ptr; }
+ bool operator !=(const reverse_iterator& it) const
+ { return m_ptr != it.m_ptr; }
+
+ private:
+ value_type *m_ptr;
+ };
+
wxVector() : m_size(0), m_capacity(0), m_values(NULL) {}
- wxVector(const wxVector& c)
+ wxVector(size_type size)
+ : m_size(0), m_capacity(0), m_values(NULL)
+ {
+ reserve(size);
+ for ( size_t n = 0; n < size; n++ )
+ push_back(value_type());
+ }
+
+ wxVector(size_type size, const value_type& v)
+ : m_size(0), m_capacity(0), m_values(NULL)
+ {
+ reserve(size);
+ for ( size_t n = 0; n < size; n++ )
+ push_back(v);
+ }
+
+ wxVector(const wxVector& c) : m_size(0), m_capacity(0), m_values(NULL)
{
Copy(c);
}
Ops::Free(m_values);
m_values = NULL;
- m_size = m_capacity = 0;
+ m_size =
+ m_capacity = 0;
}
void reserve(size_type n)
m_capacity = n;
}
+ void resize(size_type n)
+ {
+ if ( n < m_size )
+ Shrink(n);
+ else if ( n > m_size )
+ Extend(n, value_type());
+ }
+
+ void resize(size_type n, const value_type& v)
+ {
+ if ( n < m_size )
+ Shrink(n);
+ else if ( n > m_size )
+ Extend(n, v);
+ }
+
size_type size() const
{
return m_size;
wxVector& operator=(const wxVector& vb)
{
- Copy(vb);
+ if (this != &vb)
+ {
+ clear();
+ Copy(vb);
+ }
return *this;
}
// use placement new to initialize new object in preallocated place in
// m_values and store 'v' in it:
void* const place = m_values + m_size;
- new(place) value_type(v);
+ ::new(place) value_type(v);
// only increase m_size if the ctor didn't throw an exception; notice
// that if it _did_ throw, everything is OK, because we only increased
const_iterator end() const { return m_values + size(); }
iterator end() { return m_values + size(); }
+ reverse_iterator rbegin() { return reverse_iterator(end() - 1); }
+ reverse_iterator rend() { return reverse_iterator(begin() - 1); }
+
iterator insert(iterator it, const value_type& v = value_type())
{
// NB: this must be done before reserve(), because reserve()
reserve(size() + 1);
+ // the place where the new element is going to be inserted
+ value_type * const place = m_values + idx;
+
// unless we're inserting at the end, move following elements out of
// the way:
if ( after > 0 )
- {
- Ops::MemmoveForward(m_values + idx + 1, m_values + idx, after);
- }
+ Ops::MemmoveForward(place + 1, place, after);
-#if wxUSE_EXCEPTIONS
- try
- {
-#endif
- // use placement new to initialize new object in preallocated place
- // in m_values and store 'v' in it:
- void* const place = m_values + idx;
- new(place) value_type(v);
-#if wxUSE_EXCEPTIONS
- }
- catch ( ... )
- {
- // if the ctor threw an exception, we need to move all the elements
- // back to their original positions in m_values
- if ( after > 0 )
- {
- Ops::MemmoveBackward(m_values + idx, m_values + idx + 1, after);
- }
-
- throw; // rethrow the exception
- }
-#endif // wxUSE_EXCEPTIONS
+ // 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:
+ ::new(place) value_type(v);
- // increment m_size only if ctor didn't throw -- if it did, we'll be
- // left with m_values larger than necessary, but number of elements will
- // be the same
+ // now that we did successfully add the new element, increment the size
+ // and disable moving the items back
+ moveBack.Dismiss();
m_size++;
return begin() + idx;
void Copy(const wxVector& vb)
{
- clear();
reserve(vb.size());
for ( const_iterator i = vb.begin(); i != vb.end(); ++i )
}
private:
+ 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);
+ }
+
size_type m_size,
m_capacity;
value_type *m_values;
projects / wxWidgets.git / blobdiff