org.cobraparser.js.JavaConstructorObject Maven / Gradle / Ivy
/*
GNU LESSER GENERAL PUBLIC LICENSE
Copyright (C) 2006 The Lobo Project
This library is free software; you can redistribute it and/or
modify it under the terms of the GNU Lesser General Public
License as published by the Free Software Foundation; either
version 2.1 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
Lesser General Public License for more details.
You should have received a copy of the GNU Lesser General Public
License along with this library; if not, write to the Free Software
Foundation, Inc., 51 Franklin St, Fifth Floor, Boston, MA 02110-1301 USA
Contact info: [email protected]
*/
package org.cobraparser.js;
import org.mozilla.javascript.Context;
import org.mozilla.javascript.EcmaError;
import org.mozilla.javascript.Function;
import org.mozilla.javascript.Scriptable;
import org.mozilla.javascript.ScriptableObject;
import org.mozilla.javascript.WrappedException;
import org.w3c.dom.DOMException;
public class JavaConstructorObject extends ScriptableObject implements Function {
private static final long serialVersionUID = 5536902327235533789L;
private final JavaClassWrapper classWrapper;
private final JavaInstantiator instantiator;
private final String name;
public JavaConstructorObject(final String name, final JavaClassWrapper classWrapper) {
this.name = name;
this.classWrapper = classWrapper;
this.instantiator = new SimpleInstantiator(classWrapper);
}
public JavaConstructorObject(final String name, final JavaClassWrapper classWrapper, final JavaInstantiator instantiator) {
this.name = name;
this.classWrapper = classWrapper;
this.instantiator = instantiator;
}
@Override
public String getClassName() {
return this.name;
}
public Object call(final Context cx, final Scriptable scope, final Scriptable thisObj, final Object[] args) {
// TODO: Implement this, or atleast remove the wrapped exception.
// The exception is being wrapped so that web-platform-tests don't timeout; timeouts are slowing down testing.
throw new WrappedException(new UnsupportedOperationException());
}
public Scriptable construct(final Context cx, final Scriptable scope, final Object[] args) {
try {
final Object javaObject = this.instantiator.newInstance(args);
final Scriptable newObject = new JavaObjectWrapper(this.classWrapper, javaObject);
newObject.setParentScope(scope);
return newObject;
} catch (final DOMException err) {
throw new WrappedException(err);
} catch (final EcmaError err) {
throw err;
} catch (final Exception err) {
throw new IllegalStateException(err);
}
}
@Override
public Object getDefaultValue(final Class hint) {
// null is passed as hint when converting to string, hence adding it as an extra condition.
if (String.class.equals(hint) || (hint == null)) {
return "function " + this.name;
} else {
return super.getDefaultValue(hint);
}
}
public static class SimpleInstantiator implements JavaInstantiator {
private final JavaClassWrapper classWrapper;
public SimpleInstantiator(final JavaClassWrapper classWrapper) {
super();
this.classWrapper = classWrapper;
}
public Object newInstance(final Object[] args) throws InstantiationException, IllegalAccessException {
return this.classWrapper.newInstance();
}
}
@Override
public boolean hasInstance(final Scriptable instance) {
return classWrapper.hasInstance(instance);
}
}