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Commit	Line	Data
	1	/*
	2	* Copyright (C) 2008, 2013, 2014 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	*
	8	* 1. Redistributions of source code must retain the above copyright
	9	* notice, this list of conditions and the following disclaimer.
	10	* 2. Redistributions in binary form must reproduce the above copyright
	11	* notice, this list of conditions and the following disclaimer in the
	12	* documentation and/or other materials provided with the distribution.
	13	* 3. Neither the name of Apple Inc. ("Apple") nor the names of
	14	* its contributors may be used to endorse or promote products derived
	15	* from this software without specific prior written permission.
	16	*
	17	* THIS SOFTWARE IS PROVIDED BY APPLE AND ITS CONTRIBUTORS "AS IS" AND ANY
	18	* EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED
	19	* WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE
	20	* DISCLAIMED. IN NO EVENT SHALL APPLE OR ITS CONTRIBUTORS BE LIABLE FOR ANY
	21	* DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES
	22	* (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES;
	23	* LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND
	24	* ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT
	25	* (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE OF
	26	* THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
	27	*/
	28
	29	#ifndef DebuggerCallFrame_h
	30	#define DebuggerCallFrame_h
	31
	32	#include "DebuggerPrimitives.h"
	33	#include "Strong.h"
	34	#include <wtf/NakedPtr.h>
	35	#include <wtf/PassRefPtr.h>
	36	#include <wtf/RefCounted.h>
	37	#include <wtf/text/TextPosition.h>
	38
	39	namespace JSC {
	40
	41	class DebuggerScope;
	42	class Exception;
	43	class ExecState;
	44	typedef ExecState CallFrame;
	45
	46	class DebuggerCallFrame : public RefCounted<DebuggerCallFrame> {
	47	public:
	48	enum Type { ProgramType, FunctionType };
	49
	50	static Ref<DebuggerCallFrame> create(CallFrame* callFrame)
	51	{
	52	return adoptRef(*new DebuggerCallFrame(callFrame));
	53	}
	54
	55	JS_EXPORT_PRIVATE explicit DebuggerCallFrame(CallFrame*);
	56
	57	JS_EXPORT_PRIVATE RefPtr<DebuggerCallFrame> callerFrame();
	58	ExecState* exec() const { return m_callFrame; }
	59	JS_EXPORT_PRIVATE SourceID sourceID() const;
	60
	61	// line and column are in base 0 e.g. the first line is line 0.
	62	int line() const { return m_position.m_line.zeroBasedInt(); }
	63	int column() const { return m_position.m_column.zeroBasedInt(); }
	64	JS_EXPORT_PRIVATE const TextPosition& position() const { return m_position; }
	65
	66	JS_EXPORT_PRIVATE JSGlobalObject* vmEntryGlobalObject() const;
	67	JS_EXPORT_PRIVATE DebuggerScope* scope();
	68	JS_EXPORT_PRIVATE String functionName() const;
	69	JS_EXPORT_PRIVATE Type type() const;
	70	JS_EXPORT_PRIVATE JSValue thisValue() const;
	71	JSValue evaluate(const String&, NakedPtr<Exception>&);
	72
	73	bool isValid() const { return !!m_callFrame; }
	74	JS_EXPORT_PRIVATE void invalidate();
	75
	76	// The following are only public for the Debugger's use only. They will be
	77	// made private soon. Other clients should not use these.
	78
	79	JS_EXPORT_PRIVATE static TextPosition positionForCallFrame(CallFrame*);
	80	JS_EXPORT_PRIVATE static SourceID sourceIDForCallFrame(CallFrame*);
	81	static JSValue thisValueForCallFrame(CallFrame*);
	82
	83	private:
	84	CallFrame* m_callFrame;
	85	RefPtr<DebuggerCallFrame> m_caller;
	86	TextPosition m_position;
	87	// The DebuggerPausedScope is responsible for calling invalidate() which,
	88	// in turn, will clear this strong ref.
	89	Strong<DebuggerScope> m_scope;
	90	};
	91
	92	} // namespace JSC
	93
	94	#endif // DebuggerCallFrame_h