mirror of https://github.com/PrimeDecomp/prime.git
112 lines
3.1 KiB
C++
112 lines
3.1 KiB
C++
#ifndef _RSTL_VECTOR_HPP
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#define _RSTL_VECTOR_HPP
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#include "types.h"
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#include "pointer_iterator.hpp"
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#include "rmemory_allocator.hpp"
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namespace rstl {
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template < typename T, typename Alloc = rmemory_allocator >
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class vector {
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Alloc x0_allocator;
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size_t x4_count;
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size_t x8_capacity;
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T* xc_items;
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public:
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typedef pointer_iterator< T, vector< T, Alloc >, Alloc > iterator;
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typedef const_pointer_iterator< T, vector< T, Alloc >, Alloc > const_iterator;
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inline iterator begin() { return iterator(xc_items); }
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inline const_iterator begin() const { return const_iterator(xc_items); }
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inline iterator end() { return iterator(xc_items + x4_count); }
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inline const_iterator end() const { return const_iterator(xc_items + x4_count); }
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inline vector() : x4_count(0), x8_capacity(0), xc_items(NULL) {}
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inline vector(size_t count) : x4_count(0), x8_capacity(0), xc_items(0) { reserve(count); }
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vector(const vector& other) {
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x4_count = other.x4_count;
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x8_capacity = other.x8_capacity;
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if (x4_count == 0 && x8_capacity == 0) {
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xc_items = NULL;
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} else {
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size_t sz = x8_capacity * sizeof(T);
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if (sz == 0) {
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xc_items = NULL;
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} else {
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x0_allocator.allocate(xc_items, sz);
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}
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rstl::uninitialized_copy_n(data(), other.data(), x4_count);
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}
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}
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~vector() {
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rstl::destroy(begin(), end());
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x0_allocator.deallocate(xc_items);
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}
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void reserve(size_t size);
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void push_back(const T& in) {
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if (x4_count >= x8_capacity) {
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reserve(x8_capacity != 0 ? x8_capacity * 2 : 4);
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}
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iterator out = begin() + x4_count;
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out = in;
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++x4_count;
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}
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vector& operator=(const vector& other) {
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if (this == &other)
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return *this;
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clear();
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if (other.size() == 0) {
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x0_allocator.deallocate(xc_items);
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x4_count = 0;
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x8_capacity = 0;
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xc_items = nullptr;
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} else {
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reserve(other.size());
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rstl::uninitialized_copy(data(), other.data(), other.data() + other.size());
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x4_count = other.x4_count;
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}
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return *this;
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}
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void clear() {
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rstl::destroy(begin(), end());
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x4_count = 0;
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}
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inline T* data() { return xc_items; }
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inline const T* data() const { return xc_items; }
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inline size_t size() const { return x4_count; }
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inline size_t capacity() const { return x8_capacity; }
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inline T& front() { return xc_items[0]; }
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inline const T& front() const { return xc_items[0]; }
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inline T& back() { return xc_items[x4_count - 1]; }
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inline const T& back() const { return xc_items[x4_count - 1]; }
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inline T& operator[](size_t idx) { return xc_items[idx]; }
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inline const T& operator[](size_t idx) const { return xc_items[idx]; }
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};
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template < typename T, typename Alloc >
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void vector< T, Alloc >::reserve(size_t size) {
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if (size <= x8_capacity)
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return;
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size_t sz = size * sizeof(T);
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T* newData;
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if (sz == 0) {
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newData = nullptr;
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} else {
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x0_allocator.allocate(newData, sz);
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}
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rstl::uninitialized_copy(begin(), end(), newData);
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rstl::destroy(xc_items, xc_items + x4_count);
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x0_allocator.deallocate(xc_items);
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xc_items = newData;
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x8_capacity = size;
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}
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} // namespace rstl
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#endif
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