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46 lines
1.3 KiB
C++
46 lines
1.3 KiB
C++
#ifndef COMMON_INITIALIZER_LIST_H
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#define COMMON_INITIALIZER_LIST_H
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// Some compiler only have partial support for C++11 and we provide replacements for reatures not available.
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#ifdef NO_CXX11_INITIALIZER_LIST
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namespace std {
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template<class T> class initializer_list {
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public:
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typedef T value_type;
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typedef const T& reference;
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typedef const T& const_reference;
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typedef size_t size_type;
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typedef const T* iterator;
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typedef const T* const_iterator;
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constexpr initializer_list() noexcept = default;
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constexpr size_t size() const noexcept { return m_size; };
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constexpr const T* begin() const noexcept { return m_begin; };
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constexpr const T* end() const noexcept { return m_begin + m_size; }
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private:
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// Note: begin has to be first or the compiler gets very upset
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const T* m_begin = { nullptr };
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size_t m_size = { 0 };
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// The compiler is allowed to call this constructor
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constexpr initializer_list(const T* t, size_t s) noexcept : m_begin(t) , m_size(s) {}
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};
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template<class T> constexpr const T* begin(initializer_list<T> il) noexcept {
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return il.begin();
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}
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template<class T> constexpr const T* end(initializer_list<T> il) noexcept {
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return il.end();
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}
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}
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#else
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#include <initializer_list>
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#endif // NO_CXX11_INITIALIZER_LIST
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#endif // COMMON_INITIALIZER_LIST_H
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