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* Licensed to the Apache Software Foundation (ASF) under one
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* distributed with this work for additional information
* regarding copyright ownership. The ASF licenses this file
* to you under the Apache License, Version 2.0 (the
* "License"); you may not use this file except in compliance
* with the License. You may obtain a copy of the License at
*
* http://www.apache.org/licenses/LICENSE-2.0
*
* Unless required by applicable law or agreed to in writing,
* software distributed under the License is distributed on an
* "AS IS" BASIS, WITHOUT WARRANTIES OR CONDITIONS OF ANY
* KIND, either express or implied. See the License for the
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******************************************************************************/
package org.apache.sling.scripting.sightly.js.impl.async;
import org.mozilla.javascript.BaseFunction;
import org.mozilla.javascript.Context;
import org.mozilla.javascript.Function;
import org.mozilla.javascript.Scriptable;
import org.apache.sling.scripting.sightly.js.impl.loop.EventLoopInterop;
import org.apache.sling.scripting.sightly.js.impl.rhino.JsUtils;
/**
* Timing function for JS scripts that use async constructs
*/
public final class TimingFunction extends BaseFunction {
public static final TimingFunction INSTANCE = new TimingFunction();
private TimingFunction() {
}
@Override
public Object call(final Context cx, final Scriptable scope, Scriptable thisObj, Object[] args) {
if (args.length == 0) {
return Context.getUndefinedValue();
}
if (!(args[0] instanceof Function)) {
throw new IllegalArgumentException("Timing function must receive a function as the first argument");
}
final Function function = (Function) args[0];
return EventLoopInterop.schedule(cx, new Runnable() {
@Override
public void run() {
JsUtils.callFn(function, cx, scope, null, new Object[0]);
}
});
}
}