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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
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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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 * 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
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package com.oracle.truffle.js.nodes.unary;

import java.util.Objects;

import com.oracle.truffle.api.dsl.Executed;
import com.oracle.truffle.api.frame.VirtualFrame;
import com.oracle.truffle.api.instrumentation.GenerateWrapper;
import com.oracle.truffle.api.instrumentation.ProbeNode;
import com.oracle.truffle.api.nodes.NodeInfo;
import com.oracle.truffle.js.nodes.JavaScriptNode;
import com.oracle.truffle.js.nodes.instrumentation.JSTags;

@GenerateWrapper
public abstract class JSUnaryNode extends JavaScriptNode {
    @Child @Executed protected JavaScriptNode operandNode;

    protected JSUnaryNode(JavaScriptNode operand) {
        this.operandNode = operand;
    }

    
For instrumentation wrapper. /**
     * For instrumentation {@link #createWrapper wrapper}.
     */
    protected JSUnaryNode() {
    }

    public final JavaScriptNode getOperand() {
        return operandNode;
    }

    public abstract Object execute(VirtualFrame frame, Object operandValue);

    @Override
    public String expressionToString() {
        if (getOperand() != null) {
            NodeInfo annotation = getClass().getAnnotation(NodeInfo.class);
            if (annotation != null) {
                String shortName = annotation.shortName();
                if (!shortName.isEmpty()) {
                    return "(" + shortName + (shortName.length() == 1 ? "" : " ") + Objects.toString(getOperand().expressionToString(), INTERMEDIATE_VALUE) + ")";
                }
            }
        }
        return null;
    }

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

    @Override
    public WrapperNode createWrapper(ProbeNode probe) {
        return new JSUnaryNodeWrapper(this, probe);
    }
}