libostd/octa/initializer_list.h

53 lines
1.4 KiB
C++

/* Initializer list support for OctaSTD.
*
* This file is part of OctaSTD. See COPYING.md for futher information.
*/
#ifndef OCTA_INITIALIZER_LIST_H
#define OCTA_INITIALIZER_LIST_H
#include <stddef.h>
#include "octa/range.h"
/* must be in std namespace otherwise the compiler won't know about it */
namespace std {
template<typename T>
class initializer_list {
const T *p_buf;
size_t p_len;
initializer_list(const T *v, size_t n): p_buf(v), p_len(n) {}
public:
typedef size_t SizeType;
typedef ptrdiff_t DiffType;
typedef T ValType;
typedef const T &RefType;
typedef const T &ConstRefType;
typedef const T *PtrType;
typedef const T *ConstPtrType;
typedef octa::PointerRange<const T> RangeType;
typedef octa::PointerRange<const T> ConstRangeType;
initializer_list(): p_buf(nullptr), p_len(0) {}
size_t length() const { return p_len; }
const T *data() const { return p_buf; }
octa::PointerRange<const T> each() {
return octa::PointerRange<const T>(p_buf, p_len);
}
};
}
namespace octa {
template<typename T> using InitializerList = std::initializer_list<T>;
template<typename T>
auto each(InitializerList<T> init) -> decltype(init.each()) {
return init.each();
}
}
#endif