git.saurik.com Git - apple/javascriptcore.git/blame_incremental

... / ...

Commit	Line	Data
	1	/*
	2	* Copyright (C) 2013 Apple, Inc. All rights reserved.
	3	*
	4	* Redistribution and use in source and binary forms, with or without
	5	* modification, are permitted provided that the following conditions
	6	* are met:
	7	* 1. Redistributions of source code must retain the above copyright
	8	* notice, this list of conditions and the following disclaimer.
	9	* 2. Redistributions in binary form must reproduce the above copyright
	10	* notice, this list of conditions and the following disclaimer in the
	11	* documentation and/or other materials provided with the distribution.
	12	*
	13	* THIS SOFTWARE IS PROVIDED BY APPLE INC. ``AS IS'' AND ANY
	14	* EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
	15	* IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR
	16	* PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL APPLE INC. OR
	17	* CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL,
	18	* EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO,
	19	* PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR
	20	* PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY
	21	* OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT
	22	* (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE
	23	* OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
	24	*/
	25
	26	#ifndef JSSetIterator_h
	27	#define JSSetIterator_h
	28
	29	#include "JSDestructibleObject.h"
	30	#include "JSSet.h"
	31
	32	#include "MapData.h"
	33
	34	namespace JSC {
	35	enum SetIterationKind : uint32_t {
	36	SetIterateKey,
	37	SetIterateValue,
	38	SetIterateKeyValue,
	39	};
	40
	41	class JSSetIterator : public JSDestructibleObject {
	42	public:
	43	typedef JSDestructibleObject Base;
	44
	45	DECLARE_EXPORT_INFO;
	46
	47	static Structure* createStructure(VM& vm, JSGlobalObject* globalObject, JSValue prototype)
	48	{
	49	return Structure::create(vm, globalObject, prototype, TypeInfo(ObjectType, StructureFlags), info());
	50	}
	51
	52	static JSSetIterator* create(VM& vm, Structure* structure, JSSet* iteratedObject, SetIterationKind kind)
	53	{
	54	JSSetIterator* instance = new (NotNull, allocateCell<JSSetIterator>(vm.heap)) JSSetIterator(vm, structure, iteratedObject, kind);
	55	instance->finishCreation(vm, iteratedObject);
	56	return instance;
	57	}
	58
	59	bool next(CallFrame* callFrame, JSValue& value)
	60	{
	61	WTF::KeyValuePair<JSValue, JSValue> pair;
	62	if (!m_iterator.next(pair))
	63	return false;
	64	if (m_kind == SetIterateValue \|\| m_kind == SetIterateKey)
	65	value = pair.key;
	66	else
	67	value = createPair(callFrame, pair.key, pair.key);
	68	return true;
	69	}
	70
	71	void finish()
	72	{
	73	m_iterator.finish();
	74	}
	75
	76	SetIterationKind kind() const { return m_kind; }
	77	JSValue iteratedValue() const { return m_set.get(); }
	78	JSSetIterator* clone(ExecState*);
	79
	80	JSSet::SetData::IteratorData* iteratorData()
	81	{
	82	return &m_iterator;
	83	}
	84
	85	private:
	86	JSSetIterator(VM& vm, Structure* structure, JSSet* iteratedObject, SetIterationKind kind)
	87	: Base(vm, structure)
	88	, m_iterator(iteratedObject->m_setData.createIteratorData(this))
	89	, m_kind(kind)
	90	{
	91	}
	92
	93	static void destroy(JSCell*);
	94	JS_EXPORT_PRIVATE void finishCreation(VM&, JSSet*);
	95	JS_EXPORT_PRIVATE JSValue createPair(CallFrame*, JSValue, JSValue);
	96	static void visitChildren(JSCell*, SlotVisitor&);
	97
	98	WriteBarrier<JSSet> m_set;
	99	JSSet::SetData::IteratorData m_iterator;
	100	SetIterationKind m_kind;
	101	};
	102
	103	}
	104
	105	#endif // !defined(JSSetIterator_h)