341 lines
7.9 KiB
C++
341 lines
7.9 KiB
C++
/*************************************************************************/
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/* dictionary.cpp */
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/*************************************************************************/
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/* This file is part of: */
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/* GODOT ENGINE */
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/* http://www.godotengine.org */
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/*************************************************************************/
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/* Copyright (c) 2007-2017 Juan Linietsky, Ariel Manzur. */
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/* */
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/* Permission is hereby granted, free of charge, to any person obtaining */
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/* a copy of this software and associated documentation files (the */
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/* "Software"), to deal in the Software without restriction, including */
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/* without limitation the rights to use, copy, modify, merge, publish, */
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/* distribute, sublicense, and/or sell copies of the Software, and to */
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/* permit persons to whom the Software is furnished to do so, subject to */
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/* the following conditions: */
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/* */
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/* The above copyright notice and this permission notice shall be */
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/* included in all copies or substantial portions of the Software. */
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/* */
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/* THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, */
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/* EXPRESS OR IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF */
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/* MERCHANTABILITY, FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT.*/
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/* IN NO EVENT SHALL THE AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY */
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/* CLAIM, DAMAGES OR OTHER LIABILITY, WHETHER IN AN ACTION OF CONTRACT, */
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/* TORT OR OTHERWISE, ARISING FROM, OUT OF OR IN CONNECTION WITH THE */
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/* SOFTWARE OR THE USE OR OTHER DEALINGS IN THE SOFTWARE. */
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/*************************************************************************/
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#include "dictionary.h"
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#include "safe_refcount.h"
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#include "variant.h"
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#include "io/json.h"
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struct _DictionaryVariantHash {
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static _FORCE_INLINE_ uint32_t hash(const Variant &p_variant) { return p_variant.hash(); }
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};
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struct DictionaryPrivate {
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struct Data {
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Variant variant;
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int order;
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};
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SafeRefCount refcount;
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HashMap<Variant,Data,_DictionaryVariantHash> variant_map;
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int counter;
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bool shared;
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};
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struct DictionaryPrivateSort {
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bool operator()(const HashMap<Variant,DictionaryPrivate::Data,_DictionaryVariantHash>::Pair *A,const HashMap<Variant,DictionaryPrivate::Data,_DictionaryVariantHash>::Pair *B) const {
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return A->data.order < B->data.order;
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}
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};
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void Dictionary::get_key_list( List<Variant> *p_keys) const {
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if (_p->variant_map.empty())
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return;
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int count = _p->variant_map.size();
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const HashMap<Variant,DictionaryPrivate::Data,_DictionaryVariantHash>::Pair **pairs = (const HashMap<Variant,DictionaryPrivate::Data,_DictionaryVariantHash>::Pair**)alloca( count * sizeof(HashMap<Variant,DictionaryPrivate::Data,_DictionaryVariantHash>::Pair *) );
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_p->variant_map.get_key_value_ptr_array(pairs);
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SortArray<const HashMap<Variant,DictionaryPrivate::Data,_DictionaryVariantHash>::Pair*,DictionaryPrivateSort> sort;
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sort.sort(pairs,count);
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for(int i=0;i<count;i++) {
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p_keys->push_back(pairs[i]->key);
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}
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}
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void Dictionary::_copy_on_write() const {
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//make a copy of what we have
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if (_p->shared)
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return;
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DictionaryPrivate *p = memnew(DictionaryPrivate);
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p->shared=_p->shared;
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p->variant_map=_p->variant_map;
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p->refcount.init();
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_unref();
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_p=p;
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}
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Variant& Dictionary::operator[](const Variant& p_key) {
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_copy_on_write();
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DictionaryPrivate::Data *v =_p->variant_map.getptr(p_key);
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if (!v) {
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DictionaryPrivate::Data d;
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d.order=_p->counter++;
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_p->variant_map[p_key]=d;
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v =_p->variant_map.getptr(p_key);
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}
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return v->variant;
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}
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const Variant& Dictionary::operator[](const Variant& p_key) const {
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return _p->variant_map[p_key].variant;
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}
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const Variant* Dictionary::getptr(const Variant& p_key) const {
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const DictionaryPrivate::Data *v =_p->variant_map.getptr(p_key);
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if (!v)
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return NULL;
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else
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return &v->variant;
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}
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Variant* Dictionary::getptr(const Variant& p_key) {
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_copy_on_write();
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DictionaryPrivate::Data *v =_p->variant_map.getptr(p_key);
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if (!v)
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return NULL;
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else
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return &v->variant;
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}
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Variant Dictionary::get_valid(const Variant& p_key) const {
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DictionaryPrivate::Data *v =_p->variant_map.getptr(p_key);
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if (!v)
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return Variant();
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else
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return v->variant;
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}
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int Dictionary::size() const {
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return _p->variant_map.size();
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}
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bool Dictionary::empty() const {
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return !_p->variant_map.size();
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}
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bool Dictionary::has(const Variant& p_key) const {
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return _p->variant_map.has(p_key);
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}
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bool Dictionary::has_all(const Array& p_keys) const {
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for (int i=0;i<p_keys.size();i++) {
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if( !has(p_keys[i]) ) {
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return false;
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}
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}
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return true;
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}
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void Dictionary::erase(const Variant& p_key) {
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_copy_on_write();
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_p->variant_map.erase(p_key);
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}
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bool Dictionary::operator==(const Dictionary& p_dictionary) const {
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return _p==p_dictionary._p;
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}
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void Dictionary::_ref(const Dictionary& p_from) const {
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//make a copy first (thread safe)
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if (!p_from._p->refcount.ref())
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return; // couldn't copy
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//if this is the same, unreference the other one
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if (p_from._p==_p) {
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_p->refcount.unref();
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return;
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}
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if (_p)
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_unref();
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_p=p_from._p;
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}
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void Dictionary::clear() {
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_copy_on_write();
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_p->variant_map.clear();
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_p->counter=0;
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}
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bool Dictionary::is_shared() const {
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return _p->shared;
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}
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void Dictionary::_unref() const {
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ERR_FAIL_COND(!_p);
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if (_p->refcount.unref()) {
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memdelete(_p);
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}
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_p=NULL;
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}
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uint32_t Dictionary::hash() const {
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uint32_t h=hash_djb2_one_32(Variant::DICTIONARY);
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List<Variant> keys;
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get_key_list(&keys);
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for (List<Variant>::Element *E=keys.front();E;E=E->next()) {
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h = hash_djb2_one_32( E->get().hash(), h);
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h = hash_djb2_one_32( operator[](E->get()).hash(), h);
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}
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return h;
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}
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Array Dictionary::keys() const {
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Array karr;
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karr.resize(size());
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const Variant *K=NULL;
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int idx=0;
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while((K=next(K))) {
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karr[idx++]=(*K);
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}
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return karr;
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}
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Array Dictionary::values() const {
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Array varr;
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varr.resize(size());
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if (_p->variant_map.empty())
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return varr;
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int count = _p->variant_map.size();
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const HashMap<Variant,DictionaryPrivate::Data,_DictionaryVariantHash>::Pair **pairs = (const HashMap<Variant,DictionaryPrivate::Data,_DictionaryVariantHash>::Pair**)alloca( count * sizeof(HashMap<Variant,DictionaryPrivate::Data,_DictionaryVariantHash>::Pair *) );
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_p->variant_map.get_key_value_ptr_array(pairs);
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SortArray<const HashMap<Variant,DictionaryPrivate::Data,_DictionaryVariantHash>::Pair*,DictionaryPrivateSort> sort;
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sort.sort(pairs,count);
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for(int i=0;i<count;i++) {
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varr[i]=pairs[i]->data.variant;
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}
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return varr;
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}
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const Variant* Dictionary::next(const Variant* p_key) const {
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return _p->variant_map.next(p_key);
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}
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Error Dictionary::parse_json(const String& p_json) {
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String errstr;
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int errline=0;
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if (p_json != ""){
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Error err = JSON::parse(p_json,*this,errstr,errline);
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if (err!=OK) {
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ERR_EXPLAIN("Error parsing JSON: "+errstr+" at line: "+itos(errline));
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ERR_FAIL_COND_V(err!=OK,err);
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}
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}
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return OK;
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}
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Dictionary Dictionary::copy() const {
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Dictionary n(is_shared());
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List<Variant> keys;
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get_key_list(&keys);
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for(List<Variant>::Element *E=keys.front();E;E=E->next()) {
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n[E->get()]=operator[](E->get());
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}
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return n;
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}
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String Dictionary::to_json() const {
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return JSON::print(*this);
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}
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void Dictionary::operator=(const Dictionary& p_dictionary) {
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_ref(p_dictionary);
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}
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Dictionary::Dictionary(const Dictionary& p_from) {
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_p=NULL;
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_ref(p_from);
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}
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Dictionary::Dictionary(bool p_shared) {
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_p=memnew( DictionaryPrivate );
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_p->refcount.init();
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_p->counter=0;
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_p->shared=p_shared;
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}
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Dictionary::~Dictionary() {
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_unref();
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}
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