godot/core/string_name.cpp
Rémi Verschelde 0be6d925dc Style: clang-format: Disable KeepEmptyLinesAtTheStartOfBlocks
Which means that reduz' beloved style which we all became used to
will now be changed automatically to remove the first empty line.

This makes us lean closer to 1TBS (the one true brace style) instead
of hybridating it with some Allman-inspired spacing.

There's still the case of braces around single-statement blocks that
needs to be addressed (but clang-format can't help with that, but
clang-tidy may if we agree about it).

Part of #33027.
2020-05-14 16:54:55 +02:00

365 lines
8.4 KiB
C++

/*************************************************************************/
/* string_name.cpp */
/*************************************************************************/
/* This file is part of: */
/* GODOT ENGINE */
/* https://godotengine.org */
/*************************************************************************/
/* Copyright (c) 2007-2020 Juan Linietsky, Ariel Manzur. */
/* Copyright (c) 2014-2020 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 "string_name.h"
#include "core/os/os.h"
#include "core/print_string.h"
StaticCString StaticCString::create(const char *p_ptr) {
StaticCString scs;
scs.ptr = p_ptr;
return scs;
}
StringName::_Data *StringName::_table[STRING_TABLE_LEN];
StringName _scs_create(const char *p_chr) {
return (p_chr[0] ? StringName(StaticCString::create(p_chr)) : StringName());
}
bool StringName::configured = false;
Mutex StringName::mutex;
void StringName::setup() {
ERR_FAIL_COND(configured);
for (int i = 0; i < STRING_TABLE_LEN; i++) {
_table[i] = nullptr;
}
configured = true;
}
void StringName::cleanup() {
MutexLock lock(mutex);
int lost_strings = 0;
for (int i = 0; i < STRING_TABLE_LEN; i++) {
while (_table[i]) {
_Data *d = _table[i];
lost_strings++;
if (OS::get_singleton()->is_stdout_verbose()) {
if (d->cname) {
print_line("Orphan StringName: " + String(d->cname));
} else {
print_line("Orphan StringName: " + String(d->name));
}
}
_table[i] = _table[i]->next;
memdelete(d);
}
}
if (lost_strings) {
print_verbose("StringName: " + itos(lost_strings) + " unclaimed string names at exit.");
}
}
void StringName::unref() {
ERR_FAIL_COND(!configured);
if (_data && _data->refcount.unref()) {
MutexLock lock(mutex);
if (_data->prev) {
_data->prev->next = _data->next;
} else {
if (_table[_data->idx] != _data) {
ERR_PRINT("BUG!");
}
_table[_data->idx] = _data->next;
}
if (_data->next) {
_data->next->prev = _data->prev;
}
memdelete(_data);
}
_data = nullptr;
}
bool StringName::operator==(const String &p_name) const {
if (!_data) {
return (p_name.length() == 0);
}
return (_data->get_name() == p_name);
}
bool StringName::operator==(const char *p_name) const {
if (!_data) {
return (p_name[0] == 0);
}
return (_data->get_name() == p_name);
}
bool StringName::operator!=(const String &p_name) const {
return !(operator==(p_name));
}
bool StringName::operator!=(const StringName &p_name) const {
// the real magic of all this mess happens here.
// this is why path comparisons are very fast
return _data != p_name._data;
}
void StringName::operator=(const StringName &p_name) {
if (this == &p_name)
return;
unref();
if (p_name._data && p_name._data->refcount.ref()) {
_data = p_name._data;
}
}
StringName::StringName(const StringName &p_name) {
_data = nullptr;
ERR_FAIL_COND(!configured);
if (p_name._data && p_name._data->refcount.ref()) {
_data = p_name._data;
}
}
StringName::StringName(const char *p_name) {
_data = nullptr;
ERR_FAIL_COND(!configured);
if (!p_name || p_name[0] == 0)
return; //empty, ignore
MutexLock lock(mutex);
uint32_t hash = String::hash(p_name);
uint32_t idx = hash & STRING_TABLE_MASK;
_data = _table[idx];
while (_data) {
// compare hash first
if (_data->hash == hash && _data->get_name() == p_name)
break;
_data = _data->next;
}
if (_data) {
if (_data->refcount.ref()) {
// exists
return;
}
}
_data = memnew(_Data);
_data->name = p_name;
_data->refcount.init();
_data->hash = hash;
_data->idx = idx;
_data->cname = nullptr;
_data->next = _table[idx];
_data->prev = nullptr;
if (_table[idx])
_table[idx]->prev = _data;
_table[idx] = _data;
}
StringName::StringName(const StaticCString &p_static_string) {
_data = nullptr;
ERR_FAIL_COND(!configured);
ERR_FAIL_COND(!p_static_string.ptr || !p_static_string.ptr[0]);
MutexLock lock(mutex);
uint32_t hash = String::hash(p_static_string.ptr);
uint32_t idx = hash & STRING_TABLE_MASK;
_data = _table[idx];
while (_data) {
// compare hash first
if (_data->hash == hash && _data->get_name() == p_static_string.ptr)
break;
_data = _data->next;
}
if (_data) {
if (_data->refcount.ref()) {
// exists
return;
}
}
_data = memnew(_Data);
_data->refcount.init();
_data->hash = hash;
_data->idx = idx;
_data->cname = p_static_string.ptr;
_data->next = _table[idx];
_data->prev = nullptr;
if (_table[idx])
_table[idx]->prev = _data;
_table[idx] = _data;
}
StringName::StringName(const String &p_name) {
_data = nullptr;
ERR_FAIL_COND(!configured);
if (p_name == String())
return;
MutexLock lock(mutex);
uint32_t hash = p_name.hash();
uint32_t idx = hash & STRING_TABLE_MASK;
_data = _table[idx];
while (_data) {
if (_data->hash == hash && _data->get_name() == p_name)
break;
_data = _data->next;
}
if (_data) {
if (_data->refcount.ref()) {
// exists
return;
}
}
_data = memnew(_Data);
_data->name = p_name;
_data->refcount.init();
_data->hash = hash;
_data->idx = idx;
_data->cname = nullptr;
_data->next = _table[idx];
_data->prev = nullptr;
if (_table[idx])
_table[idx]->prev = _data;
_table[idx] = _data;
}
StringName StringName::search(const char *p_name) {
ERR_FAIL_COND_V(!configured, StringName());
ERR_FAIL_COND_V(!p_name, StringName());
if (!p_name[0])
return StringName();
MutexLock lock(mutex);
uint32_t hash = String::hash(p_name);
uint32_t idx = hash & STRING_TABLE_MASK;
_Data *_data = _table[idx];
while (_data) {
// compare hash first
if (_data->hash == hash && _data->get_name() == p_name)
break;
_data = _data->next;
}
if (_data && _data->refcount.ref()) {
return StringName(_data);
}
return StringName(); //does not exist
}
StringName StringName::search(const CharType *p_name) {
ERR_FAIL_COND_V(!configured, StringName());
ERR_FAIL_COND_V(!p_name, StringName());
if (!p_name[0])
return StringName();
MutexLock lock(mutex);
uint32_t hash = String::hash(p_name);
uint32_t idx = hash & STRING_TABLE_MASK;
_Data *_data = _table[idx];
while (_data) {
// compare hash first
if (_data->hash == hash && _data->get_name() == p_name)
break;
_data = _data->next;
}
if (_data && _data->refcount.ref()) {
return StringName(_data);
}
return StringName(); //does not exist
}
StringName StringName::search(const String &p_name) {
ERR_FAIL_COND_V(p_name == "", StringName());
MutexLock lock(mutex);
uint32_t hash = p_name.hash();
uint32_t idx = hash & STRING_TABLE_MASK;
_Data *_data = _table[idx];
while (_data) {
// compare hash first
if (_data->hash == hash && p_name == _data->get_name())
break;
_data = _data->next;
}
if (_data && _data->refcount.ref()) {
return StringName(_data);
}
return StringName(); //does not exist
}
StringName::~StringName() {
unref();
}