com.oracle.truffle.js.nodes.promise.RejectPromiseNode Maven / Gradle / Ivy

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 * person obtaining a copy of this software, associated documentation and/or
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 * (a) the Software, and
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 * (b) any piece of software and/or hardware listed in the lrgrwrks.txt file if
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package com.oracle.truffle.js.nodes.promise;

import com.oracle.truffle.api.CompilerDirectives.TruffleBoundary;
import com.oracle.truffle.api.profiles.ConditionProfile;
import com.oracle.truffle.js.nodes.JavaScriptBaseNode;
import com.oracle.truffle.js.runtime.GraalJSException;
import com.oracle.truffle.js.runtime.JSAgent;
import com.oracle.truffle.js.runtime.JSConfig;
import com.oracle.truffle.js.runtime.JSContext;
import com.oracle.truffle.js.runtime.builtins.JSError;
import com.oracle.truffle.js.runtime.builtins.JSErrorObject;
import com.oracle.truffle.js.runtime.builtins.JSPromise;
import com.oracle.truffle.js.runtime.builtins.JSPromiseObject;

public class RejectPromiseNode extends JavaScriptBaseNode {
    private final JSContext context;
    @Child private TriggerPromiseReactionsNode triggerPromiseReactions;
    private final ConditionProfile unhandledProf = ConditionProfile.create();

    protected RejectPromiseNode(JSContext context) {
        this.context = context;
        this.triggerPromiseReactions = TriggerPromiseReactionsNode.create(context);
    }

    public static RejectPromiseNode create(JSContext context) {
        return new RejectPromiseNode(context);
    }

    public Object execute(JSPromiseObject promise, Object reason) {
        assert JSPromise.isPending(promise);

        if (!JSConfig.EagerStackTrace && context.isOptionAsyncStackTraces() && JSError.isJSError(reason)) {
            // Materialize lazy stack trace before clearing promise reactions.
            materializeLazyStackTrace((JSErrorObject) reason);
        }

        var reactions = promise.getPromiseRejectReactions();
        promise.setPromiseResult(reason);
        promise.clearPromiseReactions();
        JSPromise.setPromiseState(promise, JSPromise.REJECTED);
        if (unhandledProf.profile(!promise.isHandled())) {
            context.notifyPromiseRejectionTracker(promise, JSPromise.REJECTION_TRACKER_OPERATION_REJECT, reason, JSAgent.get(this));
        }
        return triggerPromiseReactions.execute(reactions, reason);
    }

    @TruffleBoundary
    private static void materializeLazyStackTrace(JSErrorObject error) {
        GraalJSException exception = JSError.getException(error);
        if (exception != null) {
            exception.getJSStackTrace();
        }
    }
}