com.oracle.truffle.js.nodes.unary.JSUnaryPlusNode Maven / Gradle / Ivy

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/*
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 * DO NOT ALTER OR REMOVE COPYRIGHT NOTICES OR THIS FILE HEADER.
 *
 * 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
 * freely licensable by each licensor hereunder covering either (i) the
 * 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
 *
 * (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
 * is contributed by such licensors),
 *
 * without restriction, including without limitation the rights to copy, create
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 * Software and the Larger Work(s), and to sublicense the foregoing rights on
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 * This license is subject to the following condition:
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 * The above copyright notice and either this complete permission notice or at a
 * minimum a reference to the UPL must be included in all copies or substantial
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package com.oracle.truffle.js.nodes.unary;

import java.util.Set;

import com.oracle.truffle.api.HostCompilerDirectives.InliningCutoff;
import com.oracle.truffle.api.dsl.Cached;
import com.oracle.truffle.api.dsl.Specialization;
import com.oracle.truffle.api.instrumentation.Tag;
import com.oracle.truffle.api.nodes.NodeInfo;
import com.oracle.truffle.api.strings.TruffleString;
import com.oracle.truffle.js.nodes.JavaScriptNode;
import com.oracle.truffle.js.nodes.cast.JSToNumberNode;
import com.oracle.truffle.js.nodes.instrumentation.JSTags;
import com.oracle.truffle.js.nodes.instrumentation.JSTags.UnaryOperationTag;
import com.oracle.truffle.js.runtime.Strings;
import com.oracle.truffle.js.runtime.builtins.JSOverloadedOperatorsObject;

@NodeInfo(shortName = "+")
public abstract class JSUnaryPlusNode extends JSUnaryNode {

    protected JSUnaryPlusNode(JavaScriptNode operand) {
        super(operand);
    }

    public static JSUnaryPlusNode create(JavaScriptNode operand) {
        return JSUnaryPlusNodeGen.create(operand);
    }

    @Specialization(guards = {"!hasOverloadedOperators(value)"})
    protected Object doDefault(Object value,
                    @Cached JSToNumberNode toNumberNode) {
        return toNumberNode.executeNumber(value);
    }

    @InliningCutoff
    @Specialization
    protected Object doOverloaded(JSOverloadedOperatorsObject value,
                    @Cached("create(getOverloadedOperatorName())") JSOverloadedUnaryNode overloadedOperatorNode) {
        return overloadedOperatorNode.execute(value);
    }

    protected TruffleString getOverloadedOperatorName() {
        return Strings.POS;
    }

    @Override
    public boolean hasTag(Class tag) {
        if (tag == UnaryOperationTag.class) {
            return true;
        } else {
            return super.hasTag(tag);
        }
    }

    @Override
    public Object getNodeObject() {
        return JSTags.createNodeObjectDescriptor("operator", getClass().getAnnotation(NodeInfo.class).shortName());
    }

    @Override
    protected JavaScriptNode copyUninitialized(Set> materializedTags) {
        return JSUnaryPlusNodeGen.create(cloneUninitialized(getOperand(), materializedTags));
    }

    @Override
    public String expressionToString() {
        return "(" + "+" + getOperand().expressionToString() + ")";
    }
}