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/*
* Frozen
* Copyright 2016 QuarksLab
*
* Licensed to the Apache Software Foundation (ASF) under one
* or more contributor license agreements. See the NOTICE file
* distributed with this work for additional information
* regarding copyright ownership. The ASF licenses this file
* to you 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.
*/
#ifndef FROZEN_LETITGO_BASIC_TYPES_H
#define FROZEN_LETITGO_BASIC_TYPES_H
#include "frozen/bits/exceptions.h"
#include <array>
#include <utility>
#include <iterator>
#include <string>
namespace frozen {
namespace bits {
// used as a fake argument for frozen::make_set and frozen::make_map in the case of N=0
struct ignored_arg {};
template <class T, std::size_t N>
class cvector {
T data [N] = {}; // zero-initialization for scalar type T, default-initialized otherwise
std::size_t dsize = 0;
public:
// Container typdefs
using value_type = T;
using reference = value_type &;
using const_reference = const value_type &;
using pointer = value_type *;
using const_pointer = const value_type *;
using iterator = pointer;
using const_iterator = const_pointer;
using size_type = std::size_t;
using difference_type = std::ptrdiff_t;
// Constructors
constexpr cvector(void) = default;
constexpr cvector(size_type count, const T& value) : dsize(count) {
for (std::size_t i = 0; i < N; ++i)
data[i] = value;
}
// Iterators
constexpr iterator begin() noexcept { return data; }
constexpr iterator end() noexcept { return data + dsize; }
// Capacity
constexpr size_type size() const { return dsize; }
// Element access
constexpr reference operator[](std::size_t index) { return data[index]; }
constexpr const_reference operator[](std::size_t index) const { return data[index]; }
constexpr reference back() { return data[dsize - 1]; }
constexpr const_reference back() const { return data[dsize - 1]; }
// Modifiers
constexpr void push_back(const T & a) { data[dsize++] = a; }
constexpr void push_back(T && a) { data[dsize++] = std::move(a); }
constexpr void pop_back() { --dsize; }
constexpr void clear() { dsize = 0; }
};
template <class T, std::size_t N>
class carray {
T data_ [N] = {}; // zero-initialization for scalar type T, default-initialized otherwise
template <std::size_t M, std::size_t... I>
constexpr carray(T const (&init)[M], std::index_sequence<I...>)
: data_{init[I]...} {}
template <class Iter, std::size_t... I>
constexpr carray(Iter iter, std::index_sequence<I...>)
: data_{((void)I, *iter++)...} {}
public:
// Container typdefs
using value_type = T;
using reference = value_type &;
using const_reference = const value_type &;
using pointer = value_type *;
using const_pointer = const value_type *;
using iterator = pointer;
using const_iterator = const_pointer;
using reverse_iterator = std::reverse_iterator<iterator>;
using const_reverse_iterator = std::reverse_iterator<const_iterator>;
using size_type = std::size_t;
using difference_type = std::ptrdiff_t;
// Constructors
constexpr carray(void) = default;
template <std::size_t M>
constexpr carray(T const (&init)[M])
: carray(init, std::make_index_sequence<N>())
{
static_assert(M >= N, "Cannot initialize a carray with an smaller array");
}
template <std::size_t M>
constexpr carray(std::array<T, M> const &init)
: carray(&init[0], std::make_index_sequence<N>())
{
static_assert(M >= N, "Cannot initialize a carray with an smaller array");
}
constexpr carray(std::initializer_list<T> init)
: carray(init.begin(), std::make_index_sequence<N>())
{
// clang & gcc doesn't recognize init.size() as a constexpr
// static_assert(init.size() >= N, "Cannot initialize a carray with an smaller initializer list");
}
// Iterators
constexpr iterator begin() noexcept { return data_; }
constexpr const_iterator begin() const noexcept { return data_; }
constexpr const_iterator cbegin() const noexcept { return data_; }
constexpr iterator end() noexcept { return data_ + N; }
constexpr const_iterator end() const noexcept { return data_ + N; }
constexpr const_iterator cend() const noexcept { return data_ + N; }
constexpr reverse_iterator rbegin() noexcept { return reverse_iterator(end()); }
constexpr const_reverse_iterator rbegin() const noexcept { return const_reverse_iterator(end()); }
constexpr const_reverse_iterator crbegin() const noexcept { return const_reverse_iterator(end()); }
constexpr reverse_iterator rend() noexcept { return reverse_iterator(begin()); }
constexpr const_reverse_iterator rend() const noexcept { return const_reverse_iterator(begin()); }
constexpr const_reverse_iterator crend() const noexcept { return const_reverse_iterator(begin()); }
// Capacity
constexpr size_type size() const { return N; }
constexpr size_type max_size() const { return N; }
// Element access
constexpr reference operator[](std::size_t index) { return data_[index]; }
constexpr const_reference operator[](std::size_t index) const { return data_[index]; }
constexpr reference at(std::size_t index) {
if (index > N)
FROZEN_THROW_OR_ABORT(std::out_of_range("Index (" + std::to_string(index) + ") out of bound (" + std::to_string(N) + ')'));
return data_[index];
}
constexpr const_reference at(std::size_t index) const {
if (index > N)
FROZEN_THROW_OR_ABORT(std::out_of_range("Index (" + std::to_string(index) + ") out of bound (" + std::to_string(N) + ')'));
return data_[index];
}
constexpr reference front() { return data_[0]; }
constexpr const_reference front() const { return data_[0]; }
constexpr reference back() { return data_[N - 1]; }
constexpr const_reference back() const { return data_[N - 1]; }
constexpr value_type* data() noexcept { return data_; }
constexpr const value_type* data() const noexcept { return data_; }
// Modifiers
constexpr void fill(const value_type& val) {
for (std::size_t i = 0; i < N; ++i)
data_[i] = val;
}
};
template <class T>
class carray<T, 0> {
public:
// Container typdefs
using value_type = T;
using reference = value_type &;
using const_reference = const value_type &;
using pointer = value_type *;
using const_pointer = const value_type *;
using iterator = pointer;
using const_iterator = const_pointer;
using reverse_iterator = std::reverse_iterator<iterator>;
using const_reverse_iterator = std::reverse_iterator<const_iterator>;
using size_type = std::size_t;
using difference_type = std::ptrdiff_t;
// Constructors
constexpr carray(void) = default;
};
} // namespace bits
} // namespace frozen
#endif
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