Mac-4.7.4/src/3rdparty/javascriptcore/JavaScriptCore/runtime/ConstructData.h

/*
 * 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 ConstructData_h
#define ConstructData_h

namespace JSC {

    class ArgList;
    class ExecState;
    class FunctionExecutable;
    class JSObject;
    class JSValue;
    class ScopeChainNode;

    enum ConstructType {
        ConstructTypeNone,
        ConstructTypeHost,
        ConstructTypeJS
    };

    typedef JSObject* (*NativeConstructor)(ExecState*, JSObject*, const ArgList&);

#ifdef QT_BUILD_SCRIPT_LIB
    class NativeConstrWrapper
    {
        NativeConstructor ptr;
        //Hack. If this variable is true and if debugger is attached at the end of
        //operator() execution functionExit event will be created (in most cases it will be default)
        //This variable was created because of FunctionWrapper::proxyCall method that change result
        //on fly. Event shuld be created with original value so the method should call it itself.
        bool callDebuggerFunctionExit;
    public:
        inline NativeConstrWrapper& operator=(NativeConstructor func)
        {
            callDebuggerFunctionExit = true;
            ptr = func;
            return *this;
        }
        inline operator NativeConstructor() const {return ptr;}
        inline operator bool() const {return ptr;}

        inline void doNotCallDebuggerFunctionExit() {callDebuggerFunctionExit = false;}
        JSObject* operator()(ExecState*, JSObject*, const ArgList&) const;
    };
#endif

#if defined(QT_BUILD_SCRIPT_LIB) && OS(SOLARIS)
    struct
#else
    union
#endif
    ConstructData {
        struct {
#ifndef QT_BUILD_SCRIPT_LIB
            NativeConstructor function;
#else
            NativeConstrWrapper function;
#endif
        } native;
        struct {
            FunctionExecutable* functionExecutable;
            ScopeChainNode* scopeChain;
        } js;
    };

    JSObject* construct(ExecState*, JSValue constructor, ConstructType, const ConstructData&, const ArgList&);

} // namespace JSC

#endif // ConstructData_h