/**
* Copyright (c) 2012-2016 André Bargull
* Alle Rechte vorbehalten / All Rights Reserved. Use is subject to license terms.
*
* <https://github.com/anba/es6draft>
*/
package com.github.anba.es6draft.runtime.objects.promise;
import static com.github.anba.es6draft.runtime.types.Undefined.UNDEFINED;
import com.github.anba.es6draft.runtime.ExecutionContext;
import com.github.anba.es6draft.runtime.internal.ScriptException;
import com.github.anba.es6draft.runtime.types.Callable;
import com.github.anba.es6draft.runtime.types.ScriptObject;
/**
* <h1>25 Control Abstraction Objects</h1><br>
* <h2>25.4 Promise Objects</h2><br>
* <h3>25.4.1 Promise Abstract Operations</h3>
* <ul>
* <li>25.4.1.1 PromiseCapability Records
* </ul>
*/
public final class PromiseCapability<PROMISE extends ScriptObject> {
/** [[Promise]] */
private final PROMISE promise;
/** [[Resolve]] */
private final Callable resolve;
/** [[Reject]] */
private final Callable reject;
/**
* Creates a new PromiseCapability record.
*
* @param promise
* the promise object
* @param resolve
* the resolve function
* @param reject
* the reject function
*/
public PromiseCapability(PROMISE promise, Callable resolve, Callable reject) {
assert promise != null && resolve != null && reject != null;
this.promise = promise;
this.resolve = resolve;
this.reject = reject;
}
/**
* Returns the [[Promise]] field of this PromiseCapability record.
*
* @return the promise object
*/
public PROMISE getPromise() {
return promise;
}
/**
* Returns the [[Resolve]] field of this PromiseCapability record.
*
* @return the resolve function
*/
public Callable getResolve() {
return resolve;
}
/**
* Returns the [[Reject]] field of this PromiseCapability record.
*
* @return the reject function
*/
public Callable getReject() {
return reject;
}
/**
* 25.4.1.1.1 IfAbruptRejectPromise (value, capability)
*
* @param <PROMISE>
* the promise type
* @param cx
* the execution context
* @param e
* the script exception
* @param capability
* the promise capability record
* @return the promise capability
*/
public static <PROMISE extends ScriptObject> PROMISE IfAbruptRejectPromise(ExecutionContext cx,
ScriptException e, PromiseCapability<PROMISE> capability) {
/* steps 1.a-1.b */
capability.getReject().call(cx, UNDEFINED, e.getValue());
/* step 1.c */
return capability.getPromise();
}
}