/* | |
* Copyright (C) 2008 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 Computer, 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. | |
*/ | |
#ifndef LabelScope_h | |
#define LabelScope_h | |
#include <wtf/PassRefPtr.h> | |
#include "Label.h" | |
namespace JSC { | |
class Identifier; | |
class LabelScope { | |
public: | |
enum Type { Loop, Switch, NamedLabel }; | |
LabelScope(Type type, const Identifier* name, int scopeDepth, PassRefPtr<Label> breakTarget, PassRefPtr<Label> continueTarget) | |
: m_refCount(0) | |
, m_type(type) | |
, m_name(name) | |
, m_scopeDepth(scopeDepth) | |
, m_breakTarget(breakTarget) | |
, m_continueTarget(continueTarget) | |
{ | |
} | |
void ref() { ++m_refCount; } | |
void deref() | |
{ | |
--m_refCount; | |
ASSERT(m_refCount >= 0); | |
} | |
int refCount() const { return m_refCount; } | |
Label* breakTarget() const { return m_breakTarget.get(); } | |
Label* continueTarget() const { return m_continueTarget.get(); } | |
Type type() const { return m_type; } | |
const Identifier* name() const { return m_name; } | |
int scopeDepth() const { return m_scopeDepth; } | |
private: | |
int m_refCount; | |
Type m_type; | |
const Identifier* m_name; | |
int m_scopeDepth; | |
RefPtr<Label> m_breakTarget; | |
RefPtr<Label> m_continueTarget; | |
}; | |
} // namespace JSC | |
#endif // LabelScope_h |