GODOT IS OPEN SOURCE

core/dictionary.cpp

@@ -0,0 +1,229 @@
+/*************************************************************************/
+/*  dictionary.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 "dictionary.h"
+#include "safe_refcount.h"
+#include "variant.h"
+#include "io/json.h"
+
+struct _DictionaryVariantHash {
+
+	static _FORCE_INLINE_ uint32_t hash(const Variant &p_variant)  { return p_variant.hash(); }
+};
+
+
+struct DictionaryPrivate {
+
+	SafeRefCount refcount;
+	HashMap<Variant,Variant,_DictionaryVariantHash> variant_map;
+	bool shared;
+
+};
+
+
+void Dictionary::get_key_list( List<Variant> *p_keys) const {
+
+	_p->variant_map.get_key_list(p_keys);
+}
+
+void Dictionary::_copy_on_write() const {
+
+	//make a copy of what we have
+	if (_p->shared)
+		return;
+
+	DictionaryPrivate *p = memnew(DictionaryPrivate);
+	p->shared=_p->shared;
+	p->variant_map=_p->variant_map;
+	p->refcount.init();
+	_unref();
+	_p=p;
+}
+
+Variant& Dictionary::operator[](const Variant& p_key) {
+
+	_copy_on_write();
+
+	return _p->variant_map[p_key];
+}
+
+const Variant& Dictionary::operator[](const Variant& p_key) const {
+
+	return _p->variant_map[p_key];
+
+}
+const Variant* Dictionary::getptr(const Variant& p_key) const {
+
+	return _p->variant_map.getptr(p_key);
+}
+Variant* Dictionary::getptr(const Variant& p_key) {
+
+	_copy_on_write();
+	return _p->variant_map.getptr(p_key);
+}
+
+Variant Dictionary::get_valid(const Variant& p_key) const {
+
+	const Variant *v = getptr(p_key);
+	if (!v)
+		return Variant();
+	return *v;
+}
+
+
+int Dictionary::size() const {
+
+	return _p->variant_map.size();
+
+}
+bool Dictionary::empty() const {
+
+	return !_p->variant_map.size();
+}
+
+bool Dictionary::has(const Variant& p_key) const {
+
+	return _p->variant_map.has(p_key);
+}
+void Dictionary::erase(const Variant& p_key) {
+	_copy_on_write();
+	_p->variant_map.erase(p_key);
+}
+
+bool Dictionary::operator==(const Dictionary& p_dictionary) const {
+
+	return _p==p_dictionary._p;
+}
+
+void Dictionary::_ref(const Dictionary& p_from) const {
+
+	//make a copy first (thread safe)
+	if (!p_from._p->refcount.ref())
+		return; // couldn't copy
+
+	//if this is the same, unreference the other one
+	if (p_from._p==_p) {
+		_p->refcount.unref();
+		return;
+	}
+	if (_p)
+		_unref();
+	_p=p_from._p;
+
+}
+
+void Dictionary::clear() {
+
+	_copy_on_write();
+	_p->variant_map.clear();
+}
+
+bool Dictionary::is_shared() const {
+
+    return _p->shared;
+}
+
+
+void Dictionary::_unref() const {
+
+	ERR_FAIL_COND(!_p);
+	if (_p->refcount.unref()) {
+		memdelete(_p);
+	}
+	_p=NULL;
+
+}
+uint32_t Dictionary::hash() const {
+
+	return hash_djb2_one_64(make_uint64_t(_p));
+}
+
+Array Dictionary::keys() const {
+
+	Array karr;
+	karr.resize(size());
+	const Variant *K=NULL;
+	int idx=0;
+	while((K=next(K))) {
+		karr[idx++]=(*K);
+	}
+	return karr;
+
+}
+
+const Variant* Dictionary::next(const Variant* p_key) const {
+
+	return _p->variant_map.next(p_key);
+}
+
+
+Error Dictionary::parse_json(const String& p_json) {
+
+	String errstr;
+	int errline=0;
+	Error err = JSON::parse(p_json,*this,errstr,errline);
+	if (err!=OK) {
+		ERR_EXPLAIN("Error parsing JSON: "+errstr+" at line: "+itos(errline));
+		ERR_FAIL_COND_V(err!=OK,err);
+	}
+
+	return OK;
+}
+
+String Dictionary::to_json() const {
+
+	return JSON::print(*this);
+}
+
+
+void Dictionary::operator=(const Dictionary& p_dictionary) {
+
+	_ref(p_dictionary);
+}
+
+
+
+Dictionary::Dictionary(const Dictionary& p_from) {
+	_p=NULL;
+	_ref(p_from);
+}
+
+
+Dictionary::Dictionary(bool p_shared) {
+
+	_p=memnew( DictionaryPrivate );
+	_p->refcount.init();
+	_p->shared=p_shared;
+
+}
+Dictionary::~Dictionary() {
+
+	_unref();
+}
+
+