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- added reverse iterators to tarray.h

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This commit is contained in:
Christoph Oelckers 2021-11-07 12:30:10 +01:00
parent 94f40d11ae
commit 2840b5f25d
1 changed files with 121 additions and 1 deletions
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122
source/common/utility/tarray.h
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@ -105,6 +105,16 @@ protected:
T* m_ptr;
};
// magic little helper. :)
template <class T>
class backwards
{
T& _obj;
public:
backwards(T &obj) : _obj(obj) {}
auto begin() {return _obj.rbegin();}
auto end() {return _obj.rend();}
};
// TArray -------------------------------------------------------------------
@ -126,6 +136,8 @@ public:
typedef TIterator<T> iterator;
typedef TIterator<const T> const_iterator;
using reverse_iterator = std::reverse_iterator<iterator>;
using const_reverse_iterator = std::reverse_iterator<const_iterator>;
typedef T value_type;
iterator begin()
@ -154,7 +166,32 @@ public:
return &Array[Count];
}
reverse_iterator rbegin()
{
return reverse_iterator(end());
}
const_reverse_iterator rbegin() const
{
return const_reverse_iterator(end());
}
const_reverse_iterator crbegin() const
{
return const_reverse_iterator(cend());
}
reverse_iterator rend()
{
return reverse_iterator(begin());
}
const_reverse_iterator rend() const
{
return const_reverse_iterator(begin());
}
const_reverse_iterator crend() const
{
return const_reverse_iterator(cbegin());
}
////////
// This is a dummy constructor that does nothing. The purpose of this
@ -637,6 +674,8 @@ public:
typedef TIterator<T> iterator;
typedef TIterator<const T> const_iterator;
using reverse_iterator = std::reverse_iterator<iterator>;
using const_reverse_iterator = std::reverse_iterator<const_iterator>;
typedef T value_type;
iterator begin()
@ -665,6 +704,32 @@ public:
return &Array[Count];
}
reverse_iterator rbegin()
{
return reverse_iterator(end());
}
const_reverse_iterator rbegin() const
{
return const_reverse_iterator(end());
}
const_reverse_iterator crbegin() const
{
return const_reverse_iterator(cend());
}
reverse_iterator rend()
{
return reverse_iterator(begin());
}
const_reverse_iterator rend() const
{
return const_reverse_iterator(begin());
}
const_reverse_iterator crend() const
{
return const_reverse_iterator(cbegin());
}
void Init(T *ptr, unsigned cnt)
{
Array = ptr;
@ -1705,6 +1770,8 @@ public:
typedef TIterator<T> iterator;
typedef TIterator<const T> const_iterator;
using reverse_iterator = std::reverse_iterator<iterator>;
using const_reverse_iterator = std::reverse_iterator<const_iterator>;
typedef T value_type;
iterator begin()
@ -1733,6 +1800,32 @@ public:
return &Array[Count];
}
reverse_iterator rbegin()
{
return reverse_iterator(end());
}
const_reverse_iterator rbegin() const
{
return const_reverse_iterator(end());
}
const_reverse_iterator crbegin() const
{
return const_reverse_iterator(cend());
}
reverse_iterator rend()
{
return reverse_iterator(begin());
}
const_reverse_iterator rend() const
{
return const_reverse_iterator(begin());
}
const_reverse_iterator crend() const
{
return const_reverse_iterator(cbegin());
}
////////
TArrayView() = default; // intended to keep this type trivial.
@ -1862,6 +1955,8 @@ public:
typedef TSparseIterator<T> iterator;
typedef TSparseIterator<const T> const_iterator;
using reverse_iterator = std::reverse_iterator<iterator>;
using const_reverse_iterator = std::reverse_iterator<const_iterator>;
typedef T value_type;
iterator begin()
@ -1890,6 +1985,31 @@ public:
return const_iterator(Array + Count * Stride, Stride);
}
reverse_iterator rbegin()
{
return reverse_iterator(end());
}
const_reverse_iterator rbegin() const
{
return const_reverse_iterator(end());
}
const_reverse_iterator crbegin() const
{
return const_reverse_iterator(cend());
}
reverse_iterator rend()
{
return reverse_iterator(begin());
}
const_reverse_iterator rend() const
{
return const_reverse_iterator(begin());
}
const_reverse_iterator crend() const
{
return const_reverse_iterator(cbegin());
}
////////
TSparseArrayView() = default; // intended to keep this type trivial.