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DebuggerCallFrame.h
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90 lines (73 loc) · 3.75 KB
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/*
* Copyright (C) 2008, 2013, 2014 Apple Inc. All rights reserved.
*
* Redistribution and use in source and binary forms, with or without
* modification, are permitted provided that the following conditions
* are met:
*
* 1. Redistributions of source code must retain the above copyright
* notice, this list of conditions and the following disclaimer.
* 2. Redistributions in binary form must reproduce the above copyright
* notice, this list of conditions and the following disclaimer in the
* documentation and/or other materials provided with the distribution.
* 3. Neither the name of Apple Inc. ("Apple") nor the names of
* its contributors may be used to endorse or promote products derived
* from this software without specific prior written permission.
*
* THIS SOFTWARE IS PROVIDED BY APPLE AND ITS CONTRIBUTORS "AS IS" AND ANY
* EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED
* WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE
* DISCLAIMED. IN NO EVENT SHALL APPLE OR ITS CONTRIBUTORS BE LIABLE FOR ANY
* DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES
* (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES;
* LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND
* ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT
* (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE OF
* THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
*/
#pragma once
#include <JavaScriptCore/CallFrame.h>
#include <JavaScriptCore/DebuggerPrimitives.h>
#include <JavaScriptCore/ShadowChicken.h>
#include <JavaScriptCore/Strong.h>
#include <wtf/NakedPtr.h>
#include <wtf/RefCounted.h>
#include <wtf/text/TextPosition.h>
namespace JSC {
class DebuggerScope;
class Exception;
class DebuggerCallFrame : public RefCounted<DebuggerCallFrame> {
public:
enum Type { ProgramType, FunctionType };
static Ref<DebuggerCallFrame> create(VM&, CallFrame*);
JS_EXPORT_PRIVATE RefPtr<DebuggerCallFrame> NODELETE callerFrame();
JSGlobalObject* globalObject(VM&);
JS_EXPORT_PRIVATE SourceID sourceID() const;
// line and column are in base 0 e.g. the first line is line 0.
int NODELETE line() const { return m_position.m_line.zeroBasedInt(); }
int NODELETE column() const { return m_position.m_column.zeroBasedInt(); }
JS_EXPORT_PRIVATE const TextPosition& position() const LIFETIME_BOUND { return m_position; }
JS_EXPORT_PRIVATE DebuggerScope* scope(VM&);
JS_EXPORT_PRIVATE String functionName(VM&) const;
JS_EXPORT_PRIVATE Type NODELETE type(VM&) const;
JS_EXPORT_PRIVATE JSValue thisValue(VM&) const;
JSValue evaluateWithScopeExtension(VM&, const String&, JSObject* scopeExtensionObject, NakedPtr<Exception>&);
bool isValid() const { return !!m_validMachineFrame || isTailDeleted(); }
JS_EXPORT_PRIVATE void invalidate();
// The following are only public for the Debugger's use only. They will be
// made private soon. Other clients should not use these.
JS_EXPORT_PRIVATE TextPosition currentPosition(VM&);
JS_EXPORT_PRIVATE static TextPosition positionForCallFrame(VM&, CallFrame*);
JS_EXPORT_PRIVATE static SourceID sourceIDForCallFrame(CallFrame*);
bool isTailDeleted() const { return m_shadowChickenFrame.isTailDeleted; }
private:
DebuggerCallFrame(VM&, CallFrame*, const ShadowChicken::Frame&);
CallFrame* m_validMachineFrame;
RefPtr<DebuggerCallFrame> m_caller;
TextPosition m_position;
// The DebuggerPausedScope is responsible for calling invalidate() which,
// in turn, will clear this strong ref.
Strong<DebuggerScope> m_scope;
ShadowChicken::Frame m_shadowChickenFrame;
};
} // namespace JSC