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Add missing LocalVector template 

Co-authored-by: Rémi Verschelde <rverschelde@gmail.com>
pull/982/head
Rackoon 2022-12-16 18:16:12 +01:00 committed by Rémi Verschelde
parent 3da6db4fe4
commit 1df83331de
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/**************************************************************************/
/* local_vector.hpp */
/**************************************************************************/
/* This file is part of: */
/* GODOT ENGINE */
/* https://godotengine.org */
/**************************************************************************/
/* Copyright (c) 2014-present Godot Engine contributors (see AUTHORS.md). */
/* Copyright (c) 2007-2014 Juan Linietsky, Ariel Manzur. */
/* */
/* Permission is hereby granted, free of charge, to any person obtaining */
/* a copy of this software and associated documentation files (the */
/* "Software"), to deal in the Software without restriction, including */
/* without limitation the rights to use, copy, modify, merge, publish, */
/* distribute, sublicense, and/or sell copies of the Software, and to */
/* permit persons to whom the Software is furnished to do so, subject to */
/* the following conditions: */
/* */
/* The above copyright notice and this permission notice shall be */
/* included in all copies or substantial portions of the Software. */
/* */
/* THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, */
/* EXPRESS OR IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF */
/* MERCHANTABILITY, FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. */
/* IN NO EVENT SHALL THE AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY */
/* CLAIM, DAMAGES OR OTHER LIABILITY, WHETHER IN AN ACTION OF CONTRACT, */
/* TORT OR OTHERWISE, ARISING FROM, OUT OF OR IN CONNECTION WITH THE */
/* SOFTWARE OR THE USE OR OTHER DEALINGS IN THE SOFTWARE. */
/**************************************************************************/
#ifndef GODOT_LOCAL_VECTOR_HPP
#define GODOT_LOCAL_VECTOR_HPP
#include "godot_cpp/core/error_macros.hpp"
#include "godot_cpp/core/memory.hpp"
#include "godot_cpp/templates/sort_array.hpp"
#include "godot_cpp/templates/vector.hpp"
#include <initializer_list>
#include <type_traits>
namespace godot {
// If tight, it grows strictly as much as needed.
// Otherwise, it grows exponentially (the default and what you want in most cases).
template <class T, class U = uint32_t, bool force_trivial = false, bool tight = false>
class LocalVector {
private:
U count = 0;
U capacity = 0;
T *data = nullptr;
public:
T *ptr() {
return data;
}
const T *ptr() const {
return data;
}
_FORCE_INLINE_ void push_back(T p_elem) {
if (unlikely(count == capacity)) {
if (capacity == 0) {
capacity = 1;
} else {
capacity <<= 1;
}
data = (T *)memrealloc(data, capacity * sizeof(T));
CRASH_COND_MSG(!data, "Out of memory");
}
if constexpr (!std::is_trivially_constructible<T>::value && !force_trivial) {
memnew_placement(&data[count++], T(p_elem));
} else {
data[count++] = p_elem;
}
}
void remove_at(U p_index) {
ERR_FAIL_UNSIGNED_INDEX(p_index, count);
count--;
for (U i = p_index; i < count; i++) {
data[i] = data[i + 1];
}
if constexpr (!std::is_trivially_destructible<T>::value && !force_trivial) {
data[count].~T();
}
}
/// Removes the item copying the last value into the position of the one to
/// remove. It's generally faster than `remove`.
void remove_at_unordered(U p_index) {
ERR_FAIL_INDEX(p_index, count);
count--;
if (count > p_index) {
data[p_index] = data[count];
}
if constexpr (!std::is_trivially_destructible<T>::value && !force_trivial) {
data[count].~T();
}
}
void erase(const T &p_val) {
int64_t idx = find(p_val);
if (idx >= 0) {
remove_at(idx);
}
}
void invert() {
for (U i = 0; i < count / 2; i++) {
SWAP(data[i], data[count - i - 1]);
}
}
_FORCE_INLINE_ void clear() { resize(0); }
_FORCE_INLINE_ void reset() {
clear();
if (data) {
memfree(data);
data = nullptr;
capacity = 0;
}
}
_FORCE_INLINE_ bool is_empty() const { return count == 0; }
_FORCE_INLINE_ U get_capacity() const { return capacity; }
_FORCE_INLINE_ void reserve(U p_size) {
p_size = tight ? p_size : nearest_power_of_2_templated(p_size);
if (p_size > capacity) {
capacity = p_size;
data = (T *)memrealloc(data, capacity * sizeof(T));
CRASH_COND_MSG(!data, "Out of memory");
}
}
_FORCE_INLINE_ U size() const { return count; }
void resize(U p_size) {
if (p_size < count) {
if constexpr (!std::is_trivially_destructible<T>::value && !force_trivial) {
for (U i = p_size; i < count; i++) {
data[i].~T();
}
}
count = p_size;
} else if (p_size > count) {
if (unlikely(p_size > capacity)) {
if (capacity == 0) {
capacity = 1;
}
while (capacity < p_size) {
capacity <<= 1;
}
data = (T *)memrealloc(data, capacity * sizeof(T));
CRASH_COND_MSG(!data, "Out of memory");
}
if constexpr (!std::is_trivially_constructible<T>::value && !force_trivial) {
for (U i = count; i < p_size; i++) {
memnew_placement(&data[i], T);
}
}
count = p_size;
}
}
_FORCE_INLINE_ const T &operator[](U p_index) const {
CRASH_BAD_UNSIGNED_INDEX(p_index, count);
return data[p_index];
}
_FORCE_INLINE_ T &operator[](U p_index) {
CRASH_BAD_UNSIGNED_INDEX(p_index, count);
return data[p_index];
}
struct Iterator {
_FORCE_INLINE_ T &operator*() const {
return *elem_ptr;
}
_FORCE_INLINE_ T *operator->() const { return elem_ptr; }
_FORCE_INLINE_ Iterator &operator++() {
elem_ptr++;
return *this;
}
_FORCE_INLINE_ Iterator &operator--() {
elem_ptr--;
return *this;
}
_FORCE_INLINE_ bool operator==(const Iterator &b) const { return elem_ptr == b.elem_ptr; }
_FORCE_INLINE_ bool operator!=(const Iterator &b) const { return elem_ptr != b.elem_ptr; }
Iterator(T *p_ptr) { elem_ptr = p_ptr; }
Iterator() {}
Iterator(const Iterator &p_it) { elem_ptr = p_it.elem_ptr; }
private:
T *elem_ptr = nullptr;
};
struct ConstIterator {
_FORCE_INLINE_ const T &operator*() const {
return *elem_ptr;
}
_FORCE_INLINE_ const T *operator->() const { return elem_ptr; }
_FORCE_INLINE_ ConstIterator &operator++() {
elem_ptr++;
return *this;
}
_FORCE_INLINE_ ConstIterator &operator--() {
elem_ptr--;
return *this;
}
_FORCE_INLINE_ bool operator==(const ConstIterator &b) const { return elem_ptr == b.elem_ptr; }
_FORCE_INLINE_ bool operator!=(const ConstIterator &b) const { return elem_ptr != b.elem_ptr; }
ConstIterator(const T *p_ptr) { elem_ptr = p_ptr; }
ConstIterator() {}
ConstIterator(const ConstIterator &p_it) { elem_ptr = p_it.elem_ptr; }
private:
const T *elem_ptr = nullptr;
};
_FORCE_INLINE_ Iterator begin() {
return Iterator(data);
}
_FORCE_INLINE_ Iterator end() {
return Iterator(data + size());
}
_FORCE_INLINE_ ConstIterator begin() const {
return ConstIterator(ptr());
}
_FORCE_INLINE_ ConstIterator end() const {
return ConstIterator(ptr() + size());
}
void insert(U p_pos, T p_val) {
ERR_FAIL_UNSIGNED_INDEX(p_pos, count + 1);
if (p_pos == count) {
push_back(p_val);
} else {
resize(count + 1);
for (U i = count - 1; i > p_pos; i--) {
data[i] = data[i - 1];
}
data[p_pos] = p_val;
}
}
int64_t find(const T &p_val, U p_from = 0) const {
for (U i = p_from; i < count; i++) {
if (data[i] == p_val) {
return int64_t(i);
}
}
return -1;
}
template <class C>
void sort_custom() {
U len = count;
if (len == 0) {
return;
}
SortArray<T, C> sorter;
sorter.sort(data, len);
}
void sort() {
sort_custom<_DefaultComparator<T>>();
}
void ordered_insert(T p_val) {
U i;
for (i = 0; i < count; i++) {
if (p_val < data[i]) {
break;
}
}
insert(i, p_val);
}
operator Vector<T>() const {
Vector<T> ret;
ret.resize(size());
T *w = ret.ptrw();
memcpy(w, data, sizeof(T) * count);
return ret;
}
Vector<uint8_t> to_byte_array() const { //useful to pass stuff to gpu or variant
Vector<uint8_t> ret;
ret.resize(count * sizeof(T));
uint8_t *w = ret.ptrw();
memcpy(w, data, sizeof(T) * count);
return ret;
}
_FORCE_INLINE_ LocalVector() {}
_FORCE_INLINE_ LocalVector(std::initializer_list<T> p_init) {
reserve(p_init.size());
for (const T &element : p_init) {
push_back(element);
}
}
_FORCE_INLINE_ LocalVector(const LocalVector &p_from) {
resize(p_from.size());
for (U i = 0; i < p_from.count; i++) {
data[i] = p_from.data[i];
}
}
inline void operator=(const LocalVector &p_from) {
resize(p_from.size());
for (U i = 0; i < p_from.count; i++) {
data[i] = p_from.data[i];
}
}
inline void operator=(const Vector<T> &p_from) {
resize(p_from.size());
for (U i = 0; i < count; i++) {
data[i] = p_from[i];
}
}
_FORCE_INLINE_ ~LocalVector() {
if (data) {
reset();
}
}
};
template <class T, class U = uint32_t, bool force_trivial = false>
using TightLocalVector = LocalVector<T, U, force_trivial, true>;
} // namespace godot
#endif // GODOT_LOCAL_VECTOR_HPP