| /* |
| * 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 freemarker.core; |
| |
| import java.util.ArrayList; |
| import java.util.Collections; |
| import java.util.Comparator; |
| import java.util.List; |
| import java.util.Map; |
| |
| /** |
| * Utilities that didn't fit elsewhere. |
| */ |
| class MiscUtil { |
| |
| // Can't be instatiated |
| private MiscUtil() { } |
| |
| static final String C_FALSE = "false"; |
| static final String C_TRUE = "true"; |
| |
| /** |
| * Returns the map entries in source code order of the Expression values. |
| */ |
| static List/*Map.Entry*/ sortMapOfExpressions(Map/*<?, Expression>*/ map) { |
| ArrayList res = new ArrayList(map.entrySet()); |
| Collections.sort(res, |
| new Comparator() { // for sorting to source code order |
| @Override |
| public int compare(Object o1, Object o2) { |
| Map.Entry ent1 = (Map.Entry) o1; |
| Expression exp1 = (Expression) ent1.getValue(); |
| |
| Map.Entry ent2 = (Map.Entry) o2; |
| Expression exp2 = (Expression) ent2.getValue(); |
| |
| int res = exp1.beginLine - exp2.beginLine; |
| if (res != 0) return res; |
| res = exp1.beginColumn - exp2.beginColumn; |
| if (res != 0) return res; |
| |
| if (ent1 == ent2) return 0; |
| |
| // Should never reach this |
| return ((String) ent1.getKey()).compareTo((String) ent1.getKey()); |
| } |
| |
| }); |
| return res; |
| } |
| |
| static Expression peelParentheses(Expression exp) { |
| while (exp instanceof ParentheticalExpression) { |
| exp = ((ParentheticalExpression) exp).getNestedExpression(); |
| } |
| return exp; |
| } |
| |
| } |