File indexing completed on 2023-10-03 03:21:48

 /* This file is part of the KDE libraries
     Copyright (C) 2005, 2006 Ian Reinhart Geiser <geiseri@kde.org>
     Copyright (C) 2005, 2006 Matt Broadstone <mbroadst@gmail.com>
     Copyright (C) 2005, 2006 Richard J. Moore <rich@kde.org>
     Copyright (C) 2005, 2006 Erik L. Bunce <kde@bunce.us>
 
     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.
 */
 #include "static_binding.h"
 #include <kjs/interpreter.h>
 #include <kjs/function_object.h>
 #include <QDebug>
 
 namespace KJSEmbed
 {
 static QHash<QString, const Constructor *> g_ctorHash;
 }
 
 using namespace KJSEmbed;
 
 StaticBinding::StaticBinding(KJS::ExecState *exec, const Method *method)
     : KJS::InternalFunctionImp(static_cast<KJS::FunctionPrototype *>(exec->lexicalInterpreter()->builtinFunctionPrototype()),
                                method->name),
     m_method(method)
 {
     putDirect(exec->propertyNames().length, m_method->argc, LengthFlags);
 }
 
 KJS::JSValue *StaticBinding::callAsFunction(KJS::ExecState *exec, KJS::JSObject *self, const KJS::List &args)
 {
     if (m_method->call == nullptr) {
         //throwError(exec, "Bad method id");      // NOTE: fix
         KJS::throwError(exec, KJS::GeneralError, "Bad method id");
         return KJS::jsNull();
     }
 
     KJS::JSValue *retValue = (*m_method->call)(exec, self, args);
 
     if (exec->hadException()) {
         return KJS::jsNull();
     }
     return retValue;
 
 }
 
 void StaticBinding::publish(KJS::ExecState *exec, KJS::JSObject *object, const Method *methods)
 {
     int idx = 0;
     while (methods[idx].name != nullptr) {
         object->put(exec, methods[idx].name, new StaticBinding(exec,  &methods[idx]), methods[idx].flags);
         idx++;
     }
 }
 
 StaticConstructor::StaticConstructor(KJS::ExecState *exec, const Constructor *constructor)
     : KJS::InternalFunctionImp(static_cast<KJS::FunctionPrototype *>(exec->lexicalInterpreter()->builtinFunctionPrototype()),
                                constructor->name),
     m_constructor(constructor)
 {
     putDirect(exec->propertyNames().length, m_constructor->argc, LengthFlags);
     m_default = KJS::jsNull();
 }
 
 KJS::JSObject *StaticConstructor::construct(KJS::ExecState *exec, const KJS::List &args)
 {
     return (*m_constructor->construct)(exec, args);
 }
 
 void StaticConstructor::setDefaultValue(KJS::JSValue *value)
 {
     m_default = value;
 }
 
 KJS::JSValue *StaticConstructor::defaultValue(KJS::ExecState *exec, KJS::JSType hint) const
 {
     Q_UNUSED(exec);
     Q_UNUSED(hint);
     return m_default;
 }
 
 KJS::JSObject *StaticConstructor::add(KJS::ExecState *exec, KJS::JSObject *object, const Constructor *constructor)
 {
     KJS::JSObject *obj = new StaticConstructor(exec,  constructor);
     object->put(exec, constructor->name, obj);
     if (constructor->staticMethods) {
         StaticBinding::publish(exec, obj, constructor->staticMethods);
     }
     /* crashes for some reason */
     if (constructor->enumerators) {
         int idx = 0;
         while (constructor->enumerators[idx].name != nullptr) {
             obj->put(exec, constructor->enumerators[idx].name,
                      KJS::jsNumber(constructor->enumerators[idx].value), KJS::DontDelete | KJS::ReadOnly);
             idx++;
         }
     }
     // publish methods
     KJSEmbed::g_ctorHash[constructor->name] = constructor;
     return obj;
 }
 
 const Method *StaticConstructor::methods(const KJS::UString &className)
 {
     return KJSEmbed::g_ctorHash[toQString(className)]->methods;
 }
 
 const Constructor *StaticConstructor::constructor(const KJS::UString &className)
 {
     return KJSEmbed::g_ctorHash[toQString(className)];
 }
 
 KJS::JSObject *StaticConstructor::bind(KJS::ExecState *exec, const QString &className, PointerBase &objPtr)
 {
     KJSEmbed::callBind mybind = KJSEmbed::g_ctorHash[className]->bind;
 //    qDebug() << "StaticConstructor::bind() className=" << className  << " mybind=" << mybind;
     if (mybind) {
         return (*mybind)(exec, objPtr);
     }
 
     return nullptr;
 }
 
 KJS::JSObject *StaticConstructor::construct(KJS::ExecState *exec, KJS::JSObject *parent, const KJS::UString &className, const KJS::List &args)
 {
 //    qDebug("StaticConstructor::construct('%s')", className.ascii() );
     if (parent->hasProperty(exec, className.ascii())) {
         KJS::JSObject *ctor = parent->get(exec, className.ascii())->toObject(exec);
         if (ctor) {
             return ctor->construct(exec, args);
         }
     }
     qDebug("cannot create '%s'", className.ascii());
     return KJS::throwError(exec, KJS::TypeError, toUString(QString("Cannot create %1 objects from javascript.").arg(toQString(className))));
 }