libcruft-util/view.hpp

63 lines
1.7 KiB
C++

/*
* Licensed under the Apache License, Version 2.0 (the "License");
* you may not use this file except in compliance with the License.
* You may obtain a copy of the License at
*
* http://www.apache.org/licenses/LICENSE-2.0
*
* Unless required by applicable law or agreed to in writing, software
* distributed under the License is distributed on an "AS IS" BASIS,
* WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
* See the License for the specific language governing permissions and
* limitations under the License.
*
* Copyright 2015 Danny Robson <danny@nerdcruft.net>
*/
#ifndef __UTIL_VIEW_HPP
#define __UTIL_VIEW_HPP
#include <cstdlib>
#include <iostream>
namespace util {
template <typename T>
struct view {
public:
using value_type = typename std::iterator_traits<T>::value_type;
template <size_t S>
constexpr view (const value_type (&arr)[S]) noexcept;
constexpr view (T first, T last) noexcept;
constexpr T begin (void) const noexcept;
constexpr T end (void) const noexcept;
constexpr T cbegin (void) const noexcept;
constexpr T cend (void) const noexcept;
constexpr T find (value_type) const noexcept;
constexpr bool empty (void) const noexcept;
constexpr size_t size (void) const noexcept;
constexpr value_type& operator[] (size_t) noexcept;
constexpr value_type& operator[] (size_t) const noexcept;
bool operator== (view) const noexcept;
private:
T m_begin;
T m_end;
};
template <typename T>
std::ostream&
operator<< (std::ostream&, view<T>);
}
#include "./view.ipp"
#endif