com.google.errorprone.bugpatterns.InvalidPatternSyntax Maven / Gradle / Ivy
/*
* Copyright 2012 The Error Prone 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 com.google.errorprone.bugpatterns;
import static com.google.errorprone.BugPattern.SeverityLevel.ERROR;
import static com.google.errorprone.matchers.Description.NO_MATCH;
import com.google.errorprone.BugPattern;
import com.google.errorprone.VisitorState;
import com.google.errorprone.matchers.Description;
import com.sun.source.tree.MethodInvocationTree;
import java.util.regex.Pattern;
import java.util.regex.PatternSyntaxException;
/**
* @author [email protected] (Matthew Dempsky)
*/
@BugPattern(summary = "Invalid syntax used for a regular expression", severity = ERROR)
public class InvalidPatternSyntax extends AbstractPatternSyntaxChecker {
private static final String MESSAGE_BASE = "Invalid syntax used for a regular expression: ";
@Override
protected final Description matchRegexLiteral(
MethodInvocationTree tree, VisitorState state, String pattern, int flags) {
try {
Pattern.compile(pattern, flags);
return NO_MATCH;
} catch (PatternSyntaxException e) {
return buildDescription(tree).setMessage(MESSAGE_BASE + e.getMessage()).build();
}
}
}