Long live Qt 4.5!

1 files changed, 217 insertions, 0 deletions

diff --git a/src/3rdparty/webkit/JavaScriptCore/runtime/Protect.h b/src/3rdparty/webkit/JavaScriptCore/runtime/Protect.h
new file mode 100644
index 0000000..efbc4bb
--- /dev/null
+++ b/src/3rdparty/webkit/JavaScriptCore/runtime/Protect.h
@@ -0,0 +1,217 @@
+/*
+ *  Copyright (C) 2004, 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 Protect_h
+#define Protect_h
+
+#include "JSCell.h"
+#include "Collector.h"
+
+namespace JSC {
+
+    inline void gcProtect(JSCell* val) 
+    {
+        Heap::heap(val)->protect(val);
+    }
+
+    inline void gcUnprotect(JSCell* val)
+    {
+        Heap::heap(val)->unprotect(val);
+    }
+
+    inline void gcProtectNullTolerant(JSCell* val) 
+    {
+        if (val) 
+            gcProtect(val);
+    }
+
+    inline void gcUnprotectNullTolerant(JSCell* val) 
+    {
+        if (val) 
+            gcUnprotect(val);
+    }
+    
+    inline void gcProtect(JSValuePtr value)
+    {
+        if (!value || JSImmediate::isImmediate(value))
+            return;
+        gcProtect(asCell(value));
+    }
+
+    inline void gcUnprotect(JSValuePtr value)
+    {
+        if (!value || JSImmediate::isImmediate(value))
+            return;
+        gcUnprotect(asCell(value));
+    }
+
+    // FIXME: Share more code with RefPtr template? The only differences are the ref/deref operation
+    // and the implicit conversion to raw pointer
+    template <class T> class ProtectedPtr {
+    public:
+        ProtectedPtr() : m_ptr(0) {}
+        ProtectedPtr(T* ptr);
+        ProtectedPtr(const ProtectedPtr&);
+        ~ProtectedPtr();
+
+        template <class U> ProtectedPtr(const ProtectedPtr<U>&);
+        
+        T* get() const { return m_ptr; }
+        operator T*() const { return m_ptr; }
+        operator JSValuePtr() const { return JSValuePtr(m_ptr); }
+        T* operator->() const { return m_ptr; }
+        
+        operator bool() const { return m_ptr; }
+        bool operator!() const { return !m_ptr; }
+
+        ProtectedPtr& operator=(const ProtectedPtr&);
+        ProtectedPtr& operator=(T*);
+        
+    private:
+        T* m_ptr;
+    };
+
+    class ProtectedJSValuePtr {
+    public:
+        ProtectedJSValuePtr() {}
+        ProtectedJSValuePtr(JSValuePtr value);
+        ProtectedJSValuePtr(const ProtectedJSValuePtr&);
+        ~ProtectedJSValuePtr();
+
+        template <class U> ProtectedJSValuePtr(const ProtectedPtr<U>&);
+        
+        JSValuePtr get() const { return m_value; }
+        operator JSValuePtr() const { return m_value; }
+        JSValuePtr operator->() const { return m_value; }
+        
+        operator bool() const { return m_value; }
+        bool operator!() const { return !m_value; }
+
+        ProtectedJSValuePtr& operator=(const ProtectedJSValuePtr&);
+        ProtectedJSValuePtr& operator=(JSValuePtr);
+        
+    private:
+        JSValuePtr m_value;
+    };
+
+    template <class T> inline ProtectedPtr<T>::ProtectedPtr(T* ptr)
+        : m_ptr(ptr)
+    {
+        gcProtectNullTolerant(m_ptr);
+    }
+
+    template <class T> inline ProtectedPtr<T>::ProtectedPtr(const ProtectedPtr& o)
+        : m_ptr(o.get())
+    {
+        gcProtectNullTolerant(m_ptr);
+    }
+
+    template <class T> inline ProtectedPtr<T>::~ProtectedPtr()
+    {
+        gcUnprotectNullTolerant(m_ptr);
+    }
+
+    template <class T> template <class U> inline ProtectedPtr<T>::ProtectedPtr(const ProtectedPtr<U>& o)
+        : m_ptr(o.get())
+    {
+        gcProtectNullTolerant(m_ptr);
+    }
+
+    template <class T> inline ProtectedPtr<T>& ProtectedPtr<T>::operator=(const ProtectedPtr<T>& o) 
+    {
+        T* optr = o.m_ptr;
+        gcProtectNullTolerant(optr);
+        gcUnprotectNullTolerant(m_ptr);
+        m_ptr = optr;
+        return *this;
+    }
+
+    template <class T> inline ProtectedPtr<T>& ProtectedPtr<T>::operator=(T* optr)
+    {
+        gcProtectNullTolerant(optr);
+        gcUnprotectNullTolerant(m_ptr);
+        m_ptr = optr;
+        return *this;
+    }
+
+    inline ProtectedJSValuePtr::ProtectedJSValuePtr(JSValuePtr value)
+        : m_value(value)
+    {
+        gcProtect(m_value);
+    }
+
+    inline ProtectedJSValuePtr::ProtectedJSValuePtr(const ProtectedJSValuePtr& o)
+        : m_value(o.get())
+    {
+        gcProtect(m_value);
+    }
+
+    inline ProtectedJSValuePtr::~ProtectedJSValuePtr()
+    {
+        gcUnprotect(m_value);
+    }
+
+    template <class U> ProtectedJSValuePtr::ProtectedJSValuePtr(const ProtectedPtr<U>& o)
+        : m_value(o.get())
+    {
+        gcProtect(m_value);
+    }
+
+    inline ProtectedJSValuePtr& ProtectedJSValuePtr::operator=(const ProtectedJSValuePtr& o) 
+    {
+        JSValuePtr ovalue = o.m_value;
+        gcProtect(ovalue);
+        gcUnprotect(m_value);
+        m_value = ovalue;
+        return *this;
+    }
+
+    inline ProtectedJSValuePtr& ProtectedJSValuePtr::operator=(JSValuePtr ovalue)
+    {
+        gcProtect(ovalue);
+        gcUnprotect(m_value);
+        m_value = ovalue;
+        return *this;
+    }
+
+    template <class T> inline bool operator==(const ProtectedPtr<T>& a, const ProtectedPtr<T>& b) { return a.get() == b.get(); }
+    template <class T> inline bool operator==(const ProtectedPtr<T>& a, const T* b) { return a.get() == b; }
+    template <class T> inline bool operator==(const T* a, const ProtectedPtr<T>& b) { return a == b.get(); }
+
+    template <class T> inline bool operator!=(const ProtectedPtr<T>& a, const ProtectedPtr<T>& b) { return a.get() != b.get(); }
+    template <class T> inline bool operator!=(const ProtectedPtr<T>& a, const T* b) { return a.get() != b; }
+    template <class T> inline bool operator!=(const T* a, const ProtectedPtr<T>& b) { return a != b.get(); }
+
+    inline bool operator==(const ProtectedJSValuePtr& a, const ProtectedJSValuePtr& b) { return a.get() == b.get(); }
+    inline bool operator==(const ProtectedJSValuePtr& a, const JSValuePtr b) { return a.get() == b; }
+    template <class T> inline bool operator==(const ProtectedJSValuePtr& a, const ProtectedPtr<T>& b) { return a.get() == JSValuePtr(b.get()); }
+    inline bool operator==(const JSValuePtr a, const ProtectedJSValuePtr& b) { return a == b.get(); }
+    template <class T> inline bool operator==(const ProtectedPtr<T>& a, const ProtectedJSValuePtr& b) { return JSValuePtr(a.get()) == b.get(); }
+
+    inline bool operator!=(const ProtectedJSValuePtr& a, const ProtectedJSValuePtr& b) { return a.get() != b.get(); }
+    inline bool operator!=(const ProtectedJSValuePtr& a, const JSValuePtr b) { return a.get() != b; }
+    template <class T> inline bool operator!=(const ProtectedJSValuePtr& a, const ProtectedPtr<T>& b) { return a.get() != JSValuePtr(b.get()); }
+    inline bool operator!=(const JSValuePtr a, const ProtectedJSValuePtr& b) { return a != b.get(); }
+    template <class T> inline bool operator!=(const ProtectedPtr<T>& a, const ProtectedJSValuePtr& b) { return JSValuePtr(a.get()) != b.get(); }
+ 
+} // namespace JSC
+
+#endif // Protect_h