| /******************************************************************************* |
| * Licensed to the Apache Software Foundation (ASF) under one |
| * or more contributor license agreements. See the NOTICE file |
| * 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 |
| * |
| * Unless required by applicable law or agreed to in writing, |
| * software distributed under the License is distributed on an |
| * "AS IS" BASIS, WITHOUT WARRANTIES OR CONDITIONS OF ANY |
| * KIND, either express or implied. See the License for the |
| * specific language governing permissions and limitations |
| * under the License. |
| ******************************************************************************/ |
| package org.apache.sling.scripting.sightly.impl.compiler.util; |
| |
| import java.util.HashMap; |
| import java.util.Map; |
| |
| public class SymbolGenerator { |
| |
| public static final String DEFAULT_VAR_PREFIX = "var_"; |
| |
| private int counter = 0; |
| private final String prefix; |
| private final Map<String, String> globals = new HashMap<>(); |
| |
| public SymbolGenerator() { |
| this(DEFAULT_VAR_PREFIX); |
| } |
| |
| public SymbolGenerator(String prefix) { |
| this.prefix = prefix; |
| } |
| |
| public String next(String hint) { |
| String middle = (hint != null) ? hint.replace("-", "_") : ""; |
| return prefix + middle + counter++; |
| } |
| |
| public String global(String hint) { |
| String name = prefix + ((hint != null) ? hint.replace("-", "_") : ""); |
| return globals.computeIfAbsent(name, key -> name + counter++); |
| } |
| |
| public String next() { |
| return next(null); |
| } |
| |
| } |