libostd/octa/initializer_list.h

/* 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"

#ifndef OCTA_ALLOW_CXXSTD
/* 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:
        initializer_list(): p_buf(nullptr), p_len(0) {}

        size_t size() const { return p_len; }

        const T *begin() const { return p_buf; }
        const T *end() const { return p_buf + p_len; }
    };
}
#else
#include <initializer_list>
#endif

namespace octa {
    using std::initializer_list;

    template<typename T> using InitializerList = std::initializer_list<T>;

    template<typename T>
    octa::PointerRange<const T> each(initializer_list<T> init) {
        return octa::PointerRange<const T>(init.begin(), init.end());
    }
}

#endif