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Matcher.java
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Matcher.java
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/*
* Copyright 2015 The Closure Compiler Authors.
*
* Licensed 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 java.util.regex;
import com.google.gwt.regexp.shared.MatchResult;
import com.google.gwt.regexp.shared.RegExp;
/**
* GWT-compatible minimal replacement for {@code Matcher}
*
* @author moz@google.com (Michael Zhou)
*/
public class Matcher {
private final RegExp regExp;
private String input;
private MatchResult result;
private boolean hasExecuted;
private int findFromIndex;
Matcher(RegExp regExp, String input) {
this.regExp = regExp;
this.input = input;
this.result = null;
this.hasExecuted = false;
this.findFromIndex = 0;
}
public boolean matches() {
result = regExp.exec(input);
hasExecuted = true;
findFromIndex = 0;
if (result != null) {
String match = result.getGroup(0);
if (match.equals(input)) {
return true;
}
result = null; // matches() needs to match whole string, pretend we didn't match
}
return false;
}
public boolean find() {
result = regExp.exec(input.substring(findFromIndex));
hasExecuted = true;
if (result != null) {
findFromIndex += result.getGroup(0).length();
return true;
}
return false;
}
public static String quoteReplacement(String input) {
return RegExp.quote(input);
}
public String replaceAll(String replacement) {
return RegExp.compile(regExp.getSource(), "g").replace(input, replacement);
}
public Matcher reset() {
result = null;
hasExecuted = false;
findFromIndex = 0;
return this;
}
public Matcher reset(String input) {
this.input = input;
return reset();
}
}