/*
* Copyright 2012 Google Inc. All Rights Reserved.
*
* 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 com.google.errorprone.matchers;
import com.google.errorprone.VisitorState;
import com.sun.source.tree.ExpressionTree;
import com.sun.source.tree.LiteralTree;
import java.util.regex.Pattern;
/**
* @author eaftan@google.com (Eddie Aftandilian)
* @author pepstein@google.com (Peter Epstein)
*/
public class StringLiteral implements Matcher<ExpressionTree> {
private final Pattern pattern;
public StringLiteral(String value) {
this.pattern = Pattern.compile(value, Pattern.LITERAL);
}
public StringLiteral(Pattern pattern) {
this.pattern = pattern;
}
@Override
public boolean matches(ExpressionTree expressionTree, VisitorState state) {
if (expressionTree instanceof LiteralTree) {
LiteralTree literalTree = (LiteralTree) expressionTree;
Object actualValue = literalTree.getValue();
return actualValue instanceof String && pattern.matcher((String) actualValue).matches();
} else {
return false;
}
}
}