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-rw-r--r--core/string_db.cpp432
1 files changed, 432 insertions, 0 deletions
diff --git a/core/string_db.cpp b/core/string_db.cpp
new file mode 100644
index 0000000000..ffb7dc194b
--- /dev/null
+++ b/core/string_db.cpp
@@ -0,0 +1,432 @@
+/*************************************************************************/
+/* string_db.cpp */
+/*************************************************************************/
+/* This file is part of: */
+/* GODOT ENGINE */
+/* http://www.godotengine.org */
+/*************************************************************************/
+/* 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. */
+/*************************************************************************/
+#include "string_db.h"
+#include "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;
+
+void StringName::setup() {
+
+ ERR_FAIL_COND(configured);
+ for(int i=0;i<STRING_TABLE_LEN;i++) {
+
+ _table[i]=NULL;
+ }
+ configured=true;
+}
+
+void StringName::cleanup() {
+
+ _global_lock();
+ for(int i=0;i<STRING_TABLE_LEN;i++) {
+
+ while(_table[i]) {
+
+ _Data*d=_table[i];
+ _table[i]=_table[i]->next;
+ memdelete(d);
+ }
+ }
+ _global_unlock();
+}
+
+void StringName::unref() {
+
+ ERR_FAIL_COND(!configured);
+
+ if (_data && _data->refcount.unref()) {
+
+ _global_lock();
+
+ 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);
+ _global_unlock();
+ }
+
+ _data=NULL;
+
+}
+
+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::operator String() const {
+
+ if (_data)
+ return _data->get_name();
+
+ return "";
+}
+
+StringName::StringName(const StringName& p_name) {
+
+ ERR_FAIL_COND(!configured);
+ _data=NULL;
+ if (p_name._data && p_name._data->refcount.ref()) {
+
+ _data = p_name._data;
+ }
+}
+
+StringName::StringName(const char *p_name) {
+
+ _data=NULL;
+
+ ERR_FAIL_COND(!configured);
+
+ ERR_FAIL_COND( !p_name || !p_name[0]);
+
+ _global_lock();
+
+ 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
+ _global_unlock();
+ return;
+ } else {
+
+ }
+ }
+
+ _data = memnew( _Data );
+ _data->name=p_name;
+ _data->refcount.init();
+ _data->hash=hash;
+ _data->idx=idx;
+ _data->cname=NULL;
+ _data->next=_table[idx];
+ _data->prev=NULL;
+ if (_table[idx])
+ _table[idx]->prev=_data;
+ _table[idx]=_data;
+
+
+ _global_unlock();
+
+}
+
+StringName::StringName(const StaticCString& p_static_string) {
+
+ _data=NULL;
+
+ ERR_FAIL_COND(!configured);
+
+ ERR_FAIL_COND( !p_static_string.ptr || !p_static_string.ptr[0]);
+
+ _global_lock();
+
+ 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
+ _global_unlock();
+ return;
+ } else {
+
+ }
+ }
+
+ _data = memnew( _Data );
+
+ _data->refcount.init();
+ _data->hash=hash;
+ _data->idx=idx;
+ _data->cname=p_static_string.ptr;
+ _data->next=_table[idx];
+ _data->prev=NULL;
+ if (_table[idx])
+ _table[idx]->prev=_data;
+ _table[idx]=_data;
+
+
+ _global_unlock();
+
+}
+
+
+StringName::StringName(const String& p_name) {
+
+ _data=NULL;
+
+ ERR_FAIL_COND(!configured);
+
+ _global_lock();
+
+ 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
+ _global_unlock();
+ return;
+ } else {
+
+
+ }
+ }
+
+
+ _data = memnew( _Data );
+ _data->name=p_name;
+ _data->refcount.init();
+ _data->hash=hash;
+ _data->idx=idx;
+ _data->cname=NULL;
+ _data->next=_table[idx];
+ _data->prev=NULL;
+ if (_table[idx])
+ _table[idx]->prev=_data;
+ _table[idx]=_data;
+
+ _global_unlock();
+
+}
+
+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();
+
+ _global_lock();
+
+ 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()) {
+ _global_unlock();
+ return StringName(_data);
+
+ }
+
+ _global_unlock();
+ 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();
+
+ _global_lock();
+
+ 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()) {
+ _global_unlock();
+ return StringName(_data);
+
+ }
+
+ _global_unlock();
+ return StringName(); //does not exist
+
+}
+StringName StringName::search(const String &p_name) {
+
+ ERR_FAIL_COND_V( p_name=="", StringName() );
+
+ _global_lock();
+
+ 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()) {
+ _global_unlock();
+ return StringName(_data);
+
+ }
+
+ _global_unlock();
+ return StringName(); //does not exist
+
+}
+
+
+StringName::StringName() {
+
+ _data=NULL;
+}
+
+StringName::~StringName() {
+
+ unref();
+}
+
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