JavaScriptCore/bindings/runtime.cpp

/*
 * Copyright (C) 2003 Apple Computer, 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.
 *
 * THIS SOFTWARE IS PROVIDED BY APPLE COMPUTER, INC. ``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 COMPUTER, INC. OR
 * 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. 
 */
#include "config.h"
#include <value.h>
#include <interpreter.h>

#include <runtime_object.h>
#include <jni_instance.h>
#include <objc_instance.h>
#include <c_instance.h>
#include <NP_jsobject.h>
#include <jni_jsobject.h>

using namespace KJS;
using namespace KJS::Bindings;

    
void MethodList::addMethod (Method *aMethod)
{
    Method **_newMethods = new Method *[_length + 1];
    if (_length > 0) {
        memcpy (_newMethods, _methods, sizeof(Method *) * _length);
        delete [] _methods;
    }
    _methods = _newMethods;
    _methods[_length++] = aMethod;
}

unsigned int MethodList::length() const
{
    return _length;
}

Method *MethodList::methodAt (unsigned int index) const
{
    assert (index < _length);
    return _methods[index];
}
    
MethodList::~MethodList()
{
    delete [] _methods;
}

MethodList::MethodList (const MethodList &other) {
    _length = other._length;
    _methods = new Method *[_length];
    if (_length > 0)
        memcpy (_methods, other._methods, sizeof(Method *) * _length);
}

MethodList &MethodList::operator=(const MethodList &other)
{
    if (this == &other)
        return *this;
            
    delete [] _methods;
    
    _length = other._length;
    _methods = new Method *[_length];
    if (_length > 0)
        memcpy (_methods, other._methods, sizeof(Method *) * _length);

    return *this;
}


static KJSDidExecuteFunctionPtr _DidExecuteFunction;

void Instance::setDidExecuteFunction (KJSDidExecuteFunctionPtr func) { _DidExecuteFunction = func; }
KJSDidExecuteFunctionPtr Instance::didExecuteFunction () { return _DidExecuteFunction; }

ValueImp *Instance::getValueOfField (KJS::ExecState *exec, const Field *aField) const {  
    return aField->valueFromInstance (exec, this);
}

void Instance::setValueOfField (KJS::ExecState *exec, const Field *aField, ValueImp *aValue) const {  
    aField->setValueToInstance (exec, this, aValue);
}

Instance *Instance::createBindingForLanguageInstance (BindingLanguage language, void *nativeInstance, const RootObject *executionContext)
{
    Instance *newInstance = 0;
    
    switch (language) {
	case Instance::JavaLanguage: {
	    newInstance = new Bindings::JavaInstance ((jobject)nativeInstance, executionContext);
	    break;
	}
	case Instance::ObjectiveCLanguage: {
	    newInstance = new Bindings::ObjcInstance ((struct objc_object *)nativeInstance);
	    break;
	}
	case Instance::CLanguage: {
	    newInstance = new Bindings::CInstance ((NPObject *)nativeInstance);
	    break;
	}
	default:
	    break;
    }

    if (newInstance)
	newInstance->setExecutionContext (executionContext);
	
    return newInstance;
}

ObjectImp *Instance::createRuntimeObject (BindingLanguage language, void *nativeInstance, const RootObject *executionContext)
{
    Instance *interfaceObject = Instance::createBindingForLanguageInstance(language, (void *)nativeInstance, executionContext);
    
    InterpreterLock lock;
    return new RuntimeObjectImp(interfaceObject,true);
}

void *Instance::createLanguageInstanceForValue (ExecState *exec, BindingLanguage language, ObjectImp *value, const RootObject *origin, const RootObject *current)
{
    void *result = 0;
    
    if (!value->isObject())
	return 0;

    ObjectImp *imp = static_cast<ObjectImp*>(value);
    
    switch (language) {
	case Instance::ObjectiveCLanguage: {
	    result = createObjcInstanceForValue (value, origin, current);
	    break;
	}
	case Instance::CLanguage: {
	    result = _NPN_CreateScriptObject (0, imp, origin, current);
	    break;
	}
	case Instance::JavaLanguage: {
	    // FIXME:  factor creation of jni_jsobjects, also remove unnecessary thread
	    // invocation code.
	    break;
	}
	default:
	    break;
    }
    
    return result;
}

Instance::Instance (const Instance &other) 
{
    setExecutionContext (other.executionContext());
};

Instance &Instance::operator=(const Instance &other)
{
    if (this == &other)
        return *this;

    setExecutionContext (other.executionContext());
    
    return *this;
}