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initial vector and string allocator support (currently space-inefficient)

master
Daniel Kolesa 2015-06-03 22:04:48 +01:00
parent ff90009450
commit 216fdb5392
3 changed files with 106 additions and 48 deletions
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4
octa/memory.h
View File

@ -1032,7 +1032,7 @@ namespace octa {
-> decltype(__a.max_size(), octa::True());
template<typename _A>
auto __octa_alloc_max_size_test(const volatile _A &__a) -> octa::False;
auto __octa_alloc_max_size_test(const _A &__a) -> octa::False;
template<typename _A>
struct __OctaAllocMaxSizeTest: octa::IntegralConstant<bool,
@ -1064,7 +1064,7 @@ namespace octa {
-> decltype(__a.container_copy(), octa::True());
template<typename _A>
auto __octa_alloc_copy_test(const volatile _A &__a) -> octa::False;
auto __octa_alloc_copy_test(const _A &__a) -> octa::False;
template<typename _A>
struct __OctaAllocCopyTest: octa::IntegralConstant<bool,

20
octa/string.h
View File

@ -16,7 +16,7 @@
namespace octa {
static constexpr size_t npos = -1;
template<typename _T>
template<typename _T, typename _A = octa::Allocator<_T>>
class StringBase {
octa::Vector<_T> __buf;
@ -34,22 +34,30 @@ namespace octa {
typedef const _T *ConstPointer;
typedef PointerRange< _T> Range;
typedef PointerRange<const _T> ConstRange;
typedef _A Allocator;
StringBase(): __buf(1, '\0') {}
StringBase(const _A &__a = _A()): __buf(1, '\0', __a) {}
StringBase(const StringBase &__s): __buf(__s.__buf) {}
StringBase(const StringBase &__s, const _A &__a):
__buf(__s.__buf, __a) {}
StringBase(StringBase &&__s): __buf(octa::move(__s.__buf)) {}
StringBase(StringBase &&__s, const _A &__a):
__buf(octa::move(__s.__buf), __a) {}
StringBase(const StringBase &__s, size_t __pos, size_t __len = npos):
StringBase(const StringBase &__s, size_t __pos, size_t __len = npos,
const _A &__a = _A()):
__buf(__s.__buf.each().slice(__pos,
(__len == npos) ? __s.__buf.size() : (__pos + __len))) {
(__len == npos) ? __s.__buf.size() : (__pos + __len)), __a) {
__terminate();
}
/* TODO: traits for utf-16/utf-32 string lengths, for now assume char */
StringBase(const _T *__v): __buf(ConstRange(__v, strlen(__v) + 1)) {}
StringBase(const _T *__v, const _A &__a = _A()):
__buf(ConstRange(__v, strlen(__v) + 1), __a) {}
template<typename _R> StringBase(_R __range): __buf(__range) {
template<typename _R> StringBase(_R __range, const _A &__a = _A()):
__buf(__range, __a) {
__terminate();
}

130
octa/vector.h
View File

@ -9,18 +9,19 @@
#include <string.h>
#include <stddef.h>
#include "octa/new.h"
#include "octa/type_traits.h"
#include "octa/utility.h"
#include "octa/range.h"
#include "octa/algorithm.h"
#include "octa/initializer_list.h"
#include "octa/memory.h"
namespace octa {
template<typename _T>
template<typename _T, typename _A = octa::Allocator<_T>>
class Vector {
_T *__buf;
size_t __len, __cap;
_A __a;
void __insert_base(size_t __idx, size_t __n) {
if (__len + __n > __cap) reserve(__len + __n);
@ -38,7 +39,7 @@ namespace octa {
reserve(__l);
__len = __l;
for (size_t __i = 0; !__range.empty(); __range.pop_front()) {
new (&__buf[__i]) _T(__range.front());
octa::allocator_construct(__a, &__buf[__i], __range.front());
++__i;
}
}
@ -50,12 +51,24 @@ namespace octa {
size_t __i = 0;
for (; !__range.empty(); __range.pop_front()) {
reserve(__i + 1);
new (&__buf[__i]) _T(__range.front());
octa::allocator_construct(__a, &__buf[__i], __range.front());
++__i;
__len = __i;
}
}
void __copy_contents(const Vector &__v) {
if (octa::IsPod<_T>()) {
memcpy(__buf, __v.__buf, __len * sizeof(_T));
} else {
_T *__cur = __buf, *__last = __buf + __len;
_T *__vbuf = __v.__buf;
while (__cur != __last) {
octa::allocator_construct(__a, __cur++, *__vbuf++);
}
}
}
public:
enum { MIN_SIZE = 8 };
@ -68,79 +81,113 @@ namespace octa {
typedef const _T *ConstPointer;
typedef PointerRange< _T> Range;
typedef PointerRange<const _T> ConstRange;
typedef _A Allocator;
Vector(): __buf(nullptr), __len(0), __cap(0) {}
Vector(const _A &__a = _A()): __buf(nullptr), __len(0), __cap(0),
__a(__a) {}
explicit Vector(size_t __n, const _T &__val = _T()): Vector() {
__buf = (_T *)new uchar[__n * sizeof(_T)];
explicit Vector(size_t __n, const _T &__val = _T(),
const _A &__al = _A()): Vector(__al) {
__buf = octa::allocator_allocate(__a, __n);
__len = __cap = __n;
_T *__cur = __buf, *__last = __buf + __n;
while (__cur != __last) new (__cur++) _T(__val);
while (__cur != __last)
octa::allocator_construct(__a, __cur++, __val);
}
Vector(const Vector &__v): Vector() {
*this = __v;
Vector(const Vector &__v): __buf(nullptr), __len(0), __cap(0),
__a(octa::allocator_container_copy(__v.__a)) {
reserve(__v.__cap);
__len = __v.__len;
__copy_contents(__v);
}
Vector(const Vector &__v, const _A &__a): __buf(nullptr), __len(0),
__cap(0), __a(__a) {
reserve(__v.__cap);
__len = __v.__len;
__copy_contents(__v);
}
Vector(Vector &&__v): __buf(__v.__buf), __len(__v.__len),
__cap(__v.__cap) {
__cap(__v.__cap), __a(octa::move(__v.__a)) {
__v.__buf = nullptr;
__v.__len = __v.__cap = 0;
}
Vector(InitializerList<_T> __v): Vector() {
Vector(Vector &&__v, const _A &__a) {
_A __tmpa;
if (__tmpa != __v.__a) {
__a = octa::move(__tmpa);
reserve(__v.__cap);
__len = __v.__len;
if (octa::IsPod<_T>()) {
memcpy(__buf, __v.__buf, __len * sizeof(_T));
} else {
_T *__cur = __buf, *__last = __buf + __len;
_T *__vbuf = __v.__buf;
while (__cur != __last) {
octa::allocator_construct(__a, __cur++,
octa::move(*__vbuf++));
}
}
return;
}
__buf = __v.__buf;
__len = __v.__len;
__cap = __v.__cap;
new (&__a) _A(octa::move(__v.__a));
__v.__buf = nullptr;
__v.__len = __v.__cap = 0;
}
Vector(InitializerList<_T> __v, const _A &__a = _A()): Vector(__a) {
size_t __l = __v.end() - __v.begin();
const _T *__ptr = __v.begin();
reserve(__l);
for (size_t __i = 0; __i < __l; ++__i)
new (&__buf[__i]) _T(__ptr[__i]);
octa::allocator_construct(__a, &__buf[__i], __ptr[__i]);
__len = __l;
}
template<typename _R> Vector(_R __range): Vector() {
template<typename _R> Vector(_R __range, const _A &__a = _A()):
Vector(__a) {
__ctor_from_range(__range);
}
~Vector() {
clear();
delete[] (uchar *)__buf;
octa::allocator_deallocate(__a, __buf, __cap);
}
void clear() {
if (__len > 0 && !octa::IsPod<_T>()) {
_T *__cur = __buf, *__last = __buf + __len;
while (__cur != __last) (*__cur++).~_T();
while (__cur != __last) octa::allocator_destroy(__a, __cur++);
}
__len = 0;
}
Vector<_T> &operator=(const Vector<_T> &__v) {
Vector &operator=(const Vector &__v) {
if (this == &__v) return *this;
clear();
reserve(__v.__cap);
__len = __v.__len;
if (octa::IsPod<_T>()) {
memcpy(__buf, __v.__buf, __len * sizeof(_T));
} else {
_T *__cur = __buf, *__last = __buf + __len;
_T *__vbuf = __v.__buf;
while (__cur != __last) {
new (__cur++) _T(*__vbuf++);
}
}
__copy_contents(__v);
return *this;
}
Vector<_T> &operator=(Vector<_T> &&__v) {
Vector &operator=(Vector &&__v) {
clear();
delete[] (uchar *)__buf;
octa::allocator_deallocate(__a, __buf, __cap);
__len = __v.__len;
__cap = __v.__cap;
__buf = __v.disown();
__a = octa::move(__v.__a);
return *this;
}
Vector<_T> &operator=(InitializerList<_T> __il) {
Vector &operator=(InitializerList<_T> __il) {
clear();
size_t __ilen = __il.end() - __il.begin();
reserve(__ilen);
@ -149,7 +196,7 @@ namespace octa {
} else {
_T *__tbuf = __buf, *__ibuf = __il.begin(), *__last = __il.end();
while (__ibuf != __last) {
new (__tbuf++) _T(*__ibuf++);
octa::allocator_construct(__a, __tbuf++, *__ibuf++);
}
}
__len = __ilen;
@ -157,7 +204,7 @@ namespace octa {
}
template<typename _R>
Vector<_T> &operator=(_R __range) {
Vector &operator=(_R __range) {
clear();
__ctor_from_range(__range);
}
@ -173,7 +220,8 @@ namespace octa {
} else {
_T *__first = __buf + __l;
_T *__last = __buf + __len;
while (__first != __last) new (__first++) _T(__v);
while (__first != __last)
octa::allocator_construct(__a, __first++, __v);
}
}
@ -185,19 +233,20 @@ namespace octa {
} else {
while (__cap < __n) __cap *= 2;
}
_T *__tmp = (_T *)new uchar[__cap * sizeof(_T)];
_T *__tmp = octa::allocator_allocate(__a, __cap);
if (__oc > 0) {
if (octa::IsPod<_T>()) {
memcpy(__tmp, __buf, __len * sizeof(_T));
} else {
_T *__cur = __buf, *__tcur = __tmp, *__last = __tmp + __len;
while (__tcur != __last) {
new (__tcur++) _T(octa::move(*__cur));
(*__cur).~_T();
octa::allocator_construct(__a, __tcur++,
octa::move(*__cur));
octa::allocator_destroy(__a, __cur);
++__cur;
}
}
delete[] (uchar *)__buf;
octa::allocator_deallocate(__a, __buf, __oc);
}
__buf = __tmp;
}
@ -210,26 +259,27 @@ namespace octa {
_T &push(const _T &__v) {
if (__len == __cap) reserve(__len + 1);
new (&__buf[__len]) _T(__v);
octa::allocator_construct(__a, &__buf[__len], __v);
return __buf[__len++];
}
_T &push() {
if (__len == __cap) reserve(__len + 1);
new (&__buf[__len]) _T;
octa::allocator_construct(__a, &__buf[__len]);
return __buf[__len++];
}
template<typename ..._U>
_T &emplace_back(_U &&...__args) {
if (__len == __cap) reserve(__len + 1);
new (&__buf[__len]) _T(octa::forward<_U>(__args)...);
octa::allocator_construct(__a, &__buf[__len],
octa::forward<_U>(__args)...);
return __buf[__len++];
}
void pop() {
if (!octa::IsPod<_T>()) {
__buf[--__len].~_T();
octa::allocator_destroy(__a, &__buf[--__len]);
} else {
--__len;
}