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#ifndef SLANG_CORE_ARRAY_VIEW_H
#define SLANG_CORE_ARRAY_VIEW_H
#include "slang-common.h"
namespace Slang
{
// !!!!!!!!!!!!!!!!!!!!!!!!!!!!! ConstArrayView !!!!!!!!!!!!!!!!!!!!!!!!!!!!!
template<typename T>
class ConstArrayView
{
public:
typedef ConstArrayView ThisType;
SLANG_FORCE_INLINE const T* begin() const { return m_buffer; }
SLANG_FORCE_INLINE const T* end() const { return m_buffer + m_count; }
SLANG_FORCE_INLINE Count getCount() const { return m_count; }
SLANG_FORCE_INLINE const T& operator[](Index idx) const
{
SLANG_ASSERT(idx >= 0 && idx < m_count);
return m_buffer[idx];
}
SLANG_FORCE_INLINE const T* getBuffer() const { return m_buffer; }
template<typename T2>
Index indexOf(const T2& val) const
{
for (Index i = 0; i < m_count; i++)
{
if (m_buffer[i] == val)
return i;
}
return -1;
}
template<typename T2>
Index lastIndexOf(const T2& val) const
{
for (Index i = m_count - 1; i >= 0; i--)
{
if (m_buffer[i] == val)
return i;
}
return -1;
}
template<typename Func>
Index findFirstIndex(const Func& predicate) const
{
for (Index i = 0; i < m_count; i++)
{
if (predicate(m_buffer[i]))
return i;
}
return -1;
}
template<typename Func>
Index findLastIndex(const Func& predicate) const
{
for (Index i = m_count - 1; i >= 0; i--)
{
if (predicate(m_buffer[i]))
return i;
}
return -1;
}
bool containsMemory(const ThisType& rhs) const
{
return rhs.getBuffer() >= getBuffer() && rhs.end() <= end();
}
bool operator==(const ThisType& rhs) const
{
if (&rhs == this)
{
return true;
}
const Count count = getCount();
if (count != rhs.getCount())
{
return false;
}
const T* thisEle = getBuffer();
const T* rhsEle = rhs.getBuffer();
for (Index i = 0; i < count; ++i)
{
if (thisEle[i] != rhsEle[i])
{
return false;
}
}
return true;
}
SLANG_FORCE_INLINE bool operator!=(const ThisType& rhs) const { return !(*this == rhs); }
ThisType head(Index index) const
{
SLANG_ASSERT(index >= 0 && index <= m_count);
return ThisType(m_buffer, index);
}
ThisType tail(Index index) const
{
SLANG_ASSERT(index >= 0 && index <= m_count);
return ThisType(m_buffer + index, m_count - index);
}
ConstArrayView()
: m_buffer(nullptr), m_count(0)
{
}
ConstArrayView(const T* buffer, Count count)
: m_buffer(const_cast<T*>(buffer)), m_count(count)
{
}
protected:
ConstArrayView(T* buffer, Count count)
: m_buffer(buffer), m_count(count)
{
}
T* m_buffer; ///< Note that this isn't const, as is used for derived class ArrayView also
Count m_count;
};
template<typename T>
ConstArrayView<T> makeConstArrayViewSingle(const T& obj)
{
return ConstArrayView<T>(&obj, 1);
}
template<typename T>
ConstArrayView<T> makeConstArrayView(const T* buffer, Count count)
{
return ConstArrayView<T>(buffer, count);
}
template<typename T, size_t N>
ConstArrayView<T> makeConstArrayView(const T (&arr)[N])
{
return ConstArrayView<T>(arr, Index(N));
}
// !!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!! ArrayView !!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!
template<typename T>
class ArrayView : public ConstArrayView<T>
{
public:
typedef ArrayView ThisType;
typedef ConstArrayView<T> Super;
using Super::m_buffer;
using Super::m_count;
using Super::begin;
T* begin() { return m_buffer; }
using Super::end;
T* end() { return m_buffer + m_count; }
using Super::head;
using Super::tail;
using Super::operator[];
inline T& operator[](Index idx)
{
SLANG_ASSERT(idx >= 0 && idx < m_count);
return m_buffer[idx];
}
using Super::getBuffer;
inline T* getBuffer() { return m_buffer; }
ThisType head(Index index)
{
SLANG_ASSERT(index >= 0 && index <= m_count);
return ThisType(m_buffer, index);
}
ThisType tail(Index index)
{
SLANG_ASSERT(index >= 0 && index <= m_count);
return ThisType(m_buffer + index, m_count - index);
}
T& getLast() { return m_buffer[m_count - 1]; }
ArrayView()
: Super()
{
}
ArrayView(T* buffer, Index size)
: Super(buffer, size)
{
}
};
template<typename T>
ArrayView<T> makeArrayViewSingle(T& obj)
{
return ArrayView<T>(&obj, 1);
}
template<typename T>
ArrayView<T> makeArrayView(T* buffer, Count count)
{
return ArrayView<T>(buffer, count);
}
template<typename T, size_t N>
ArrayView<T> makeArrayView(T (&arr)[N])
{
return ArrayView<T>(arr, Count(N));
}
} // namespace Slang
#endif
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