SymbolGenerator.java

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 * distributed with this work for additional information
 * regarding copyright ownership.  The ASF licenses this file
 * to you under the Apache License, Version 2.0 (the
 * "License"); you may not use this file except in compliance
 * with the License.  You may obtain a copy of the License at
 *
 *   http://www.apache.org/licenses/LICENSE-2.0
 *
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package org.apache.sling.scripting.sightly.impl.compiler.util;

public class SymbolGenerator {

    public static final String DEFAULT_VAR_PREFIX = "var_";

    private int counter = 0;
    private final String prefix;

    public SymbolGenerator() {
        this(DEFAULT_VAR_PREFIX);
    }

    public SymbolGenerator(String prefix) {
        this.prefix = prefix;
    }

    public String next(String hint) {
        String middle = (hint != null) ? hint.replaceAll("\\-", "_") : "";
        return prefix + middle + counter++;
    }

    public String next() {
        return next(null);
    }

}