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-rw-r--r--src/3rdparty/javascriptcore/JavaScriptCore/runtime/ScopeChain.h242
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diff --git a/src/3rdparty/javascriptcore/JavaScriptCore/runtime/ScopeChain.h b/src/3rdparty/javascriptcore/JavaScriptCore/runtime/ScopeChain.h
deleted file mode 100644
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--- a/src/3rdparty/javascriptcore/JavaScriptCore/runtime/ScopeChain.h
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@@ -1,242 +0,0 @@
-/*
- * Copyright (C) 2003, 2008, 2009 Apple Inc. All rights reserved.
- *
- * This library is free software; you can redistribute it and/or
- * modify it under the terms of the GNU Library General Public
- * License as published by the Free Software Foundation; either
- * version 2 of the License, or (at your option) any later version.
- *
- * This library is distributed in the hope that it will be useful,
- * but WITHOUT ANY WARRANTY; without even the implied warranty of
- * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
- * Library General Public License for more details.
- *
- * You should have received a copy of the GNU Library General Public License
- * along with this library; see the file COPYING.LIB. If not, write to
- * the Free Software Foundation, Inc., 51 Franklin Street, Fifth Floor,
- * Boston, MA 02110-1301, USA.
- *
- */
-
-#ifndef ScopeChain_h
-#define ScopeChain_h
-
-#include "FastAllocBase.h"
-
-namespace JSC {
-
- class JSGlobalData;
- class JSGlobalObject;
- class JSObject;
- class MarkStack;
- class ScopeChainIterator;
-
- class ScopeChainNode : public FastAllocBase {
- public:
- ScopeChainNode(ScopeChainNode* next, JSObject* object, JSGlobalData* globalData, JSGlobalObject* globalObject, JSObject* globalThis)
- : next(next)
- , object(object)
- , globalData(globalData)
- , globalObject(globalObject)
- , globalThis(globalThis)
- , refCount(1)
- {
- ASSERT(globalData);
- ASSERT(globalObject);
- }
-#ifndef NDEBUG
- // Due to the number of subtle and timing dependent bugs that have occurred due
- // to deleted but still "valid" ScopeChainNodes we now deliberately clobber the
- // contents in debug builds.
- ~ScopeChainNode()
- {
- next = 0;
- object = 0;
- globalData = 0;
- globalObject = 0;
- globalThis = 0;
- }
-#endif
-
- ScopeChainNode* next;
- JSObject* object;
- JSGlobalData* globalData;
- JSGlobalObject* globalObject;
- JSObject* globalThis;
- int refCount;
-
- void deref() { ASSERT(refCount); if (--refCount == 0) { release();} }
- void ref() { ASSERT(refCount); ++refCount; }
- void release();
-
- // Before calling "push" on a bare ScopeChainNode, a client should
- // logically "copy" the node. Later, the client can "deref" the head
- // of its chain of ScopeChainNodes to reclaim all the nodes it added
- // after the logical copy, leaving nodes added before the logical copy
- // (nodes shared with other clients) untouched.
- ScopeChainNode* copy()
- {
- ref();
- return this;
- }
-
- ScopeChainNode* push(JSObject*);
- ScopeChainNode* pop();
-
- ScopeChainIterator begin() const;
- ScopeChainIterator end() const;
-
-#ifndef NDEBUG
- void print() const;
-#endif
- };
-
- inline ScopeChainNode* ScopeChainNode::push(JSObject* o)
- {
- ASSERT(o);
- return new ScopeChainNode(this, o, globalData, globalObject, globalThis);
- }
-
- inline ScopeChainNode* ScopeChainNode::pop()
- {
- ASSERT(next);
- ScopeChainNode* result = next;
-
- if (--refCount != 0)
- ++result->refCount;
- else
- delete this;
-
- return result;
- }
-
- inline void ScopeChainNode::release()
- {
- // This function is only called by deref(),
- // Deref ensures these conditions are true.
- ASSERT(refCount == 0);
- ScopeChainNode* n = this;
- do {
- ScopeChainNode* next = n->next;
- delete n;
- n = next;
- } while (n && --n->refCount == 0);
- }
-
- class ScopeChainIterator {
- public:
- ScopeChainIterator(const ScopeChainNode* node)
- : m_node(node)
- {
- }
-
- JSObject* const & operator*() const { return m_node->object; }
- JSObject* const * operator->() const { return &(operator*()); }
-
- ScopeChainIterator& operator++() { m_node = m_node->next; return *this; }
-
- // postfix ++ intentionally omitted
-
- bool operator==(const ScopeChainIterator& other) const { return m_node == other.m_node; }
- bool operator!=(const ScopeChainIterator& other) const { return m_node != other.m_node; }
-
- private:
- const ScopeChainNode* m_node;
- };
-
- inline ScopeChainIterator ScopeChainNode::begin() const
- {
- return ScopeChainIterator(this);
- }
-
- inline ScopeChainIterator ScopeChainNode::end() const
- {
- return ScopeChainIterator(0);
- }
-
- class NoScopeChain {};
-
- class ScopeChain {
- friend class JIT;
- public:
- ScopeChain(NoScopeChain)
- : m_node(0)
- {
- }
-
- ScopeChain(JSObject* o, JSGlobalData* globalData, JSGlobalObject* globalObject, JSObject* globalThis)
- : m_node(new ScopeChainNode(0, o, globalData, globalObject, globalThis))
- {
- }
-
- ScopeChain(const ScopeChain& c)
- : m_node(c.m_node->copy())
- {
- }
-
- ScopeChain& operator=(const ScopeChain& c);
-
- explicit ScopeChain(ScopeChainNode* node)
- : m_node(node->copy())
- {
- }
-
- ~ScopeChain()
- {
- if (m_node)
- m_node->deref();
-#ifndef NDEBUG
- m_node = 0;
-#endif
- }
-
- void swap(ScopeChain&);
-
- ScopeChainNode* node() const { return m_node; }
-
- JSObject* top() const { return m_node->object; }
-
- ScopeChainIterator begin() const { return m_node->begin(); }
- ScopeChainIterator end() const { return m_node->end(); }
-
- void push(JSObject* o) { m_node = m_node->push(o); }
-
- void pop() { m_node = m_node->pop(); }
- void clear() { m_node->deref(); m_node = 0; }
-
- JSGlobalObject* globalObject() const { return m_node->globalObject; }
-
- void markAggregate(MarkStack&) const;
-
- // Caution: this should only be used if the codeblock this is being used
- // with needs a full scope chain, otherwise this returns the depth of
- // the preceeding call frame
- //
- // Returns the depth of the current call frame's scope chain
- int localDepth() const;
-
-#ifndef NDEBUG
- void print() const { m_node->print(); }
-#endif
-
- private:
- ScopeChainNode* m_node;
- };
-
- inline void ScopeChain::swap(ScopeChain& o)
- {
- ScopeChainNode* tmp = m_node;
- m_node = o.m_node;
- o.m_node = tmp;
- }
-
- inline ScopeChain& ScopeChain::operator=(const ScopeChain& c)
- {
- ScopeChain tmp(c);
- swap(tmp);
- return *this;
- }
-
-} // namespace JSC
-
-#endif // ScopeChain_h
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