com.oracle.truffle.js.nodes.access.GetMethodNode Maven / Gradle / Ivy

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 * DO NOT ALTER OR REMOVE COPYRIGHT NOTICES OR THIS FILE HEADER.
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 * The Universal Permissive License (UPL), Version 1.0
 *
 * Subject to the condition set forth below, permission is hereby granted to any
 * person obtaining a copy of this software, associated documentation and/or
 * data (collectively the "Software"), free of charge and under any and all
 * copyright rights in the Software, and any and all patent rights owned or
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 * unmodified Software as contributed to or provided by such licensor, or (ii)
 * the Larger Works (as defined below), to deal in both
 *
 * (a) the Software, and
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 * (b) any piece of software and/or hardware listed in the lrgrwrks.txt file if
 * one is included with the Software each a "Larger Work" to which the Software
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package com.oracle.truffle.js.nodes.access;

import com.oracle.truffle.api.dsl.Cached;
import com.oracle.truffle.api.dsl.NeverDefault;
import com.oracle.truffle.api.dsl.Specialization;
import com.oracle.truffle.api.profiles.InlinedBranchProfile;
import com.oracle.truffle.api.profiles.InlinedConditionProfile;
import com.oracle.truffle.js.nodes.JavaScriptBaseNode;
import com.oracle.truffle.js.nodes.unary.IsCallableNode;
import com.oracle.truffle.js.runtime.Errors;
import com.oracle.truffle.js.runtime.JSContext;
import com.oracle.truffle.js.runtime.objects.Null;
import com.oracle.truffle.js.runtime.objects.Undefined;

/**
 * ES6 7.3.9 GetMethod(O, P).
 */
public abstract class GetMethodNode extends JavaScriptBaseNode {
    @Child private PropertyGetNode cacheNode;
    @Child private IsCallableNode isCallableNode;

    protected GetMethodNode(JSContext context, Object propertyKey) {
        this.cacheNode = PropertyGetNode.create(propertyKey, context);
        this.isCallableNode = IsCallableNode.create();
    }

    @NeverDefault
    public static GetMethodNode create(JSContext ctx, Object key) {
        return GetMethodNodeGen.create(ctx, key);
    }

    public final Object getKey() {
        return cacheNode.getKey();
    }

    public abstract Object executeWithTarget(Object target);

    @Specialization
    protected Object doGetMethod(Object target,
                    @Cached InlinedConditionProfile undefinedOrNull,
                    @Cached InlinedBranchProfile notCallableBranch) {
        Object method = cacheNode.getValue(target);
        if (isCallableNode.executeBoolean(method)) {
            return method;
        } else if (undefinedOrNull.profile(this, method == Undefined.instance || method == Null.instance)) {
            return Undefined.instance;
        } else {
            notCallableBranch.enter(this);
            throw Errors.createTypeErrorNotAFunction(method, this);
        }
    }
}