| /* |
| * Copyright (c) 2013, the Dart project authors. |
| * |
| * Licensed under the Eclipse Public License v1.0 (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.eclipse.org/legal/epl-v10.html |
| * |
| * 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 com.google.dart.engine.internal.search.pattern; |
| |
| import com.google.dart.engine.element.Element; |
| import com.google.dart.engine.search.MatchQuality; |
| import com.google.dart.engine.search.SearchPattern; |
| |
| import java.util.regex.Pattern; |
| |
| /** |
| * Instances of the class <code>RegularExpressionSearchPattern</code> implement a search pattern |
| * that matches elements whose name matches a given regular expression. |
| * |
| * @coverage dart.engine.search |
| */ |
| public class RegularExpressionSearchPattern implements SearchPattern { |
| /** |
| * The regular expression pattern that matching elements must match. |
| */ |
| private Pattern pattern; |
| |
| /** |
| * Initialize a newly created search pattern to match elements whose names begin with the given |
| * prefix. |
| * |
| * @param regularExpression the regular expression that matching elements must match |
| * @param caseSensitive {@code true} if a case sensitive match is to be performed |
| */ |
| public RegularExpressionSearchPattern(String regularExpression, boolean caseSensitive) { |
| pattern = Pattern.compile(regularExpression, caseSensitive ? 0 : Pattern.CASE_INSENSITIVE); |
| } |
| |
| @Override |
| public MatchQuality matches(Element element) { |
| if (element == null) { |
| return null; |
| } |
| String name = element.getDisplayName(); |
| if (name == null) { |
| return null; |
| } |
| if (pattern.matcher(name).matches()) { |
| return MatchQuality.EXACT; |
| } |
| return null; |
| } |
| } |