mirror of
https://github.com/godotengine/godot.git
synced 2024-12-21 10:25:24 +08:00
141c375581
Clean up and do fixes to hash functions and newly introduced murmur3 hashes in #61934 * Clean up usage of murmur3 * Fixed usages of binary murmur3 on floats (this is invalid) * Changed DJB2 to use xor (which seems to be better)
94 lines
3.9 KiB
C++
94 lines
3.9 KiB
C++
/*************************************************************************/
|
|
/* callable_method_pointer.cpp */
|
|
/*************************************************************************/
|
|
/* This file is part of: */
|
|
/* GODOT ENGINE */
|
|
/* https://godotengine.org */
|
|
/*************************************************************************/
|
|
/* Copyright (c) 2007-2022 Juan Linietsky, Ariel Manzur. */
|
|
/* Copyright (c) 2014-2022 Godot Engine contributors (cf. AUTHORS.md). */
|
|
/* */
|
|
/* 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. */
|
|
/*************************************************************************/
|
|
|
|
#include "callable_method_pointer.h"
|
|
|
|
bool CallableCustomMethodPointerBase::compare_equal(const CallableCustom *p_a, const CallableCustom *p_b) {
|
|
const CallableCustomMethodPointerBase *a = static_cast<const CallableCustomMethodPointerBase *>(p_a);
|
|
const CallableCustomMethodPointerBase *b = static_cast<const CallableCustomMethodPointerBase *>(p_b);
|
|
|
|
if (a->comp_size != b->comp_size) {
|
|
return false;
|
|
}
|
|
|
|
for (uint32_t i = 0; i < a->comp_size; i++) {
|
|
if (a->comp_ptr[i] != b->comp_ptr[i]) {
|
|
return false;
|
|
}
|
|
}
|
|
|
|
return true;
|
|
}
|
|
|
|
bool CallableCustomMethodPointerBase::compare_less(const CallableCustom *p_a, const CallableCustom *p_b) {
|
|
const CallableCustomMethodPointerBase *a = static_cast<const CallableCustomMethodPointerBase *>(p_a);
|
|
const CallableCustomMethodPointerBase *b = static_cast<const CallableCustomMethodPointerBase *>(p_b);
|
|
|
|
if (a->comp_size != b->comp_size) {
|
|
return a->comp_size < b->comp_size;
|
|
}
|
|
|
|
for (uint32_t i = 0; i < a->comp_size; i++) {
|
|
if (a->comp_ptr[i] == b->comp_ptr[i]) {
|
|
continue;
|
|
}
|
|
|
|
return a->comp_ptr[i] < b->comp_ptr[i];
|
|
}
|
|
|
|
return false;
|
|
}
|
|
|
|
CallableCustom::CompareEqualFunc CallableCustomMethodPointerBase::get_compare_equal_func() const {
|
|
return compare_equal;
|
|
}
|
|
|
|
CallableCustom::CompareLessFunc CallableCustomMethodPointerBase::get_compare_less_func() const {
|
|
return compare_less;
|
|
}
|
|
|
|
uint32_t CallableCustomMethodPointerBase::hash() const {
|
|
return h;
|
|
}
|
|
|
|
void CallableCustomMethodPointerBase::_setup(uint32_t *p_base_ptr, uint32_t p_ptr_size) {
|
|
comp_ptr = p_base_ptr;
|
|
comp_size = p_ptr_size / 4;
|
|
|
|
// Precompute hash.
|
|
for (uint32_t i = 0; i < comp_size; i++) {
|
|
if (i == 0) {
|
|
h = hash_murmur3_one_32(comp_ptr[i]);
|
|
} else {
|
|
h = hash_murmur3_one_32(comp_ptr[i], h);
|
|
}
|
|
}
|
|
}
|