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package com.oracle.truffle.js.nodes.promise;

import com.oracle.truffle.api.object.DynamicObject;
import com.oracle.truffle.js.nodes.JavaScriptBaseNode;
import com.oracle.truffle.js.nodes.access.IteratorStepNode;
import com.oracle.truffle.js.nodes.access.IteratorValueNode;
import com.oracle.truffle.js.runtime.JSContext;
import com.oracle.truffle.js.runtime.objects.IteratorRecord;
import com.oracle.truffle.js.runtime.objects.PromiseCapabilityRecord;

public abstract class PerformPromiseCombinatorNode extends JavaScriptBaseNode {
    protected final JSContext context;
    @Child private IteratorStepNode iteratorStep;
    @Child private IteratorValueNode iteratorValue;

    protected PerformPromiseCombinatorNode(JSContext context) {
        this.context = context;
        this.iteratorStep = IteratorStepNode.create(context);
        this.iteratorValue = IteratorValueNode.create(context);
    }

    public abstract DynamicObject execute(IteratorRecord iteratorRecord, DynamicObject constructor, PromiseCapabilityRecord resultCapability, Object promiseResolve);

    
Let next be IteratorStep(iteratorRecord). If next is an abrupt completion, set
iteratorRecord.[[Done]] to true.
/**
     * Let next be IteratorStep(iteratorRecord). If next is an abrupt completion, set
     * iteratorRecord.[[Done]] to true.
     */
    protected final Object iteratorStepOrSetDone(IteratorRecord iteratorRecord) {
        Object next;
        try {
            next = iteratorStep.execute(iteratorRecord);
        } catch (Throwable error) {
            iteratorRecord.setDone(true);
            throw error;
        }
        return next;
    }

    
Let nextValue be IteratorValue(next). If nextValue is an abrupt completion, set
iteratorRecord.[[Done]] to true.
/**
     * Let nextValue be IteratorValue(next). If nextValue is an abrupt completion, set
     * iteratorRecord.[[Done]] to true.
     */
    protected final Object iteratorValueOrSetDone(IteratorRecord iteratorRecord, Object next) {
        Object nextValue;
        try {
            nextValue = iteratorValue.execute((DynamicObject) next);
        } catch (Throwable error) {
            iteratorRecord.setDone(true);
            throw error;
        }
        return nextValue;
    }

    protected static final class BoxedInt {
        int value;

        BoxedInt(int value) {
            this.value = value;
        }
    }
}