virtualx-engine/core/object/callable_method_pointer.cpp
reduz 141c375581 Clean up Hash Functions
Clean up and do fixes to hash functions and newly introduced murmur3 hashes in 
* 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)
2022-06-20 12:54:19 +02:00

93 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);
}
}
}