org.mozilla.javascript.jdk15.VMBridge_jdk15 Maven / Gradle / Ivy
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/* -*- Mode: java; tab-width: 8; indent-tabs-mode: nil; c-basic-offset: 4 -*-
*
* This Source Code Form is subject to the terms of the Mozilla Public
* License, v. 2.0. If a copy of the MPL was not distributed with this
* file, You can obtain one at http://mozilla.org/MPL/2.0/. */
package org.mozilla.javascript.jdk15;
import java.lang.reflect.Member;
import java.lang.reflect.Method;
import java.lang.reflect.Constructor;
import java.util.Iterator;
import org.mozilla.javascript.*;
public class VMBridge_jdk15 extends org.mozilla.javascript.jdk13.VMBridge_jdk13
{
public VMBridge_jdk15() throws SecurityException, InstantiationException {
try {
// Just try and see if we can access the isVarArgs method.
// We want to fail loading if the method does not exist
// so that we can load a bridge to an older JDK instead.
Method.class.getMethod("isVarArgs", (Class[]) null);
} catch (NoSuchMethodException e) {
// Throw a fitting exception that is handled by
// org.mozilla.javascript.Kit.newInstanceOrNull:
throw new InstantiationException(e.getMessage());
}
}
@Override
public boolean isVarArgs(Member member) {
if (member instanceof Method)
return ((Method) member).isVarArgs();
else if (member instanceof Constructor)
return ((Constructor) member).isVarArgs();
else
return false;
}
/**
* If "obj" is a java.util.Iterator or a java.lang.Iterable, return a
* wrapping as a JavaScript Iterator. Otherwise, return null.
* This method is in VMBridge since Iterable is a JDK 1.5 addition.
*/
@Override
public Iterator getJavaIterator(Context cx, Scriptable scope, Object obj) {
if (obj instanceof Wrapper) {
Object unwrapped = ((Wrapper) obj).unwrap();
Iterator iterator = null;
if (unwrapped instanceof Iterator)
iterator = (Iterator) unwrapped;
if (unwrapped instanceof Iterable)
iterator = ((Iterable)unwrapped).iterator();
return iterator;
}
return null;
}
}