prime/include/rstl/reserved_vector.hpp

88 lines
2.5 KiB
C++

#ifndef _RSTL_RESERVED_VECTOR
#define _RSTL_RESERVED_VECTOR
#include "types.h"
#include "rstl/construct.hpp"
#include "rstl/pointer_iterator.hpp"
class CInputStream;
namespace rstl {
template < typename T, int N >
class reserved_vector {
int x0_count;
uchar x4_data[N * sizeof(T)];
public:
// typedef pointer_iterator< T, reserved_vector< T, N >, void > iterator;
// typedef const_pointer_iterator< T, reserved_vector< T, N >, void > const_iterator;
typedef T* iterator;
typedef const T* const_iterator;
inline iterator begin() { return iterator(data()); }
inline const_iterator begin() const { return const_iterator(data()); }
inline iterator end() { return iterator(data() + x0_count); }
inline const_iterator end() const { return const_iterator(data() + x0_count); }
reserved_vector() : x0_count(0) {}
explicit reserved_vector(const T& value) : x0_count(N) { uninitialized_fill_n(data(), N, value); }
reserved_vector(const reserved_vector& other) : x0_count(other.x0_count) {
uninitialized_copy_n(other.data(), x0_count, data());
}
reserved_vector(CInputStream& in);
reserved_vector& operator=(const reserved_vector& other) {
if (this != &other) {
clear();
uninitialized_copy(other.data(), other.data() + other.size(), data());
x0_count = other.x0_count;
}
return *this;
}
void clear() {
for (int i = 0; i < x0_count; ++i) {
destroy(&data()[i]);
}
x0_count = 0;
}
~reserved_vector() { clear(); }
void push_back(const T& in) {
construct(&data()[x0_count], in);
++x0_count;
}
void pop_back() {
destroy(&data()[x0_count]);
--x0_count;
}
inline T* data() { return reinterpret_cast< T* >(x4_data); }
inline const T* data() const { return reinterpret_cast< const T* >(x4_data); }
inline bool empty() const { return size() == 0; }
inline int size() const { return x0_count; }
inline int capacity() const { return N; }
inline T& front() { return data()[0]; }
inline const T& front() const { return data()[0]; }
inline T& back() { return data()[x0_count - 1]; }
inline const T& back() const { return data()[x0_count - 1]; }
inline T& operator[](int idx) { return data()[idx]; }
inline const T& operator[](int idx) const { return data()[idx]; }
void erase(iterator it) {
if (it < begin()) {
return;
}
if (it < end()) {
for (iterator j = it; j < end() - 1; ++j) {
*j = *(j + 1);
}
--x0_count;
}
}
};
} // namespace rstl
#endif // _RSTL_RESERVED_VECTOR