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#ifndef CORE_LIB_ARRAY_VIEW_H
#define CORE_LIB_ARRAY_VIEW_H
#include "common.h"
namespace Slang
{
template<typename T>
class ArrayView
{
private:
T* m_buffer;
int m_count;
public:
const T* begin() const { return m_buffer; }
T* begin() { return m_buffer; }
const T* end() const { return m_buffer + m_count; }
T* end() { return m_buffer + m_count; }
public:
ArrayView():
m_buffer(nullptr),
m_count(0)
{
}
ArrayView(T& singleObj):
m_buffer(&singleObj),
m_count(1)
{
}
ArrayView(T* buffer, int size):
m_buffer(buffer),
m_count(size)
{
}
inline int getCount() const { return m_count; }
inline const T& operator [](int idx) const
{
SLANG_ASSERT(idx >= 0 && idx <= m_count);
return m_buffer[idx];
}
inline T& operator [](int idx)
{
SLANG_ASSERT(idx >= 0 && idx <= m_count);
return m_buffer[idx];
}
inline const T* getBuffer() const { return m_buffer; }
inline T* getBuffer() { return m_buffer; }
template<typename T2>
int indexOf(const T2 & val) const
{
for (int i = 0; i < m_count; i++)
{
if (m_buffer[i] == val)
return i;
}
return -1;
}
template<typename T2>
int lastIndexOf(const T2 & val) const
{
for (int i = m_count - 1; i >= 0; i--)
{
if (m_buffer[i] == val)
return i;
}
return -1;
}
template<typename Func>
int findFirstIndex(const Func& predicate) const
{
for (int i = 0; i < m_count; i++)
{
if (predicate(m_buffer[i]))
return i;
}
return -1;
}
template<typename Func>
int findLastIndex(const Func& predicate) const
{
for (int i = m_count - 1; i >= 0; i--)
{
if (predicate(m_buffer[i]))
return i;
}
return -1;
}
};
template<typename T>
ArrayView<T> makeArrayView(T& obj)
{
return ArrayView<T>(obj);
}
template<typename T>
ArrayView<T> makeArrayView(T* buffer, int count)
{
return ArrayView<T>(buffer, count);
}
}
#endif
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