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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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 * Software and the Larger Work(s), and to sublicense the foregoing rights on
 * either these or other terms.
 *
 * This license is subject to the following condition:
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package com.oracle.js.parser.ir;

import com.oracle.js.parser.ir.visitor.NodeVisitor;
import com.oracle.js.parser.ir.visitor.TranslatorNodeVisitor;

IR representation of a positional parameter value. Used for desugaring parameter initialization.
/**
 * IR representation of a positional parameter value. Used for desugaring parameter initialization.
 */
public final class ParameterNode extends Expression {
    private final int index;
    private final boolean rest;

    public ParameterNode(final long token, final int finish, final int index, final boolean rest) {
        super(token, finish);
        this.index = index;
        this.rest = rest;
    }

    public ParameterNode(final long token, final int finish, final int index) {
        this(token, finish, index, false);
    }

    @Override
    public Node accept(final NodeVisitor<? extends LexicalContext> visitor) {
        if (visitor.enterParameterNode(this)) {
            return visitor.leaveParameterNode(this);
        }

        return this;
    }

    @Override
    public <R> R accept(TranslatorNodeVisitor<? extends LexicalContext, R> visitor) {
        return visitor.enterParameterNode(this);
    }

    @Override
    public void toString(final StringBuilder sb, final boolean printType) {
        if (!isRestParameter()) {
            sb.append("arguments[").append(index).append("]");
        } else {
            sb.append("arguments.slice(").append(index).append(")");
        }
    }

    
Formal parameter index.
/**
     * Formal parameter index.
     */
    public int getIndex() {
        return index;
    }

    
If true, this is a rest parameter.
/**
     * If true, this is a rest parameter.
     */
    public boolean isRestParameter() {
        return rest;
    }
}