org.sonar.java.checks.BadPackageName_S00120_Check Maven / Gradle / Ivy

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/*
 * SonarQube Java
 * Copyright (C) 2012 SonarSource
 * [email protected]
 *
 * This program is free software; you can redistribute it and/or
 * modify it under the terms of the GNU Lesser General Public
 * License as published by the Free Software Foundation; either
 * version 3 of the License, or (at your option) any later version.
 *
 * This program is distributed in the hope that it will be useful,
 * but WITHOUT ANY WARRANTY; without even the implied warranty of
 * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the GNU
 * Lesser General Public License for more details.
 *
 * You should have received a copy of the GNU Lesser General Public
 * License along with this program; if not, write to the Free Software
 * Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA  02
 */
package org.sonar.java.checks;

import com.sonar.sslr.api.AstNode;
import com.sonar.sslr.api.Token;
import com.sonar.sslr.squid.checks.SquidCheck;
import org.sonar.check.BelongsToProfile;
import org.sonar.check.Priority;
import org.sonar.check.Rule;
import org.sonar.check.RuleProperty;
import org.sonar.java.ast.parser.JavaGrammar;
import org.sonar.sslr.parser.LexerlessGrammar;

import java.util.regex.Pattern;

@Rule(
  key = "S00120",
  priority = Priority.MAJOR)
@BelongsToProfile(title = "Sonar way", priority = Priority.MAJOR)
public class BadPackageName_S00120_Check extends SquidCheck {

  private static final String DEFAULT_FORMAT = "^[a-z]+(\\.[a-z][a-z0-9]*)*$";

  @RuleProperty(
    key = "format",
    defaultValue = "" + DEFAULT_FORMAT)
  public String format = DEFAULT_FORMAT;

  private Pattern pattern = null;

  @Override
  public void init() {
    subscribeTo(JavaGrammar.PACKAGE_DECLARATION);
    pattern = Pattern.compile(format, Pattern.DOTALL);
  }

  @Override
  public void visitNode(AstNode astNode) {
    String name = concatenate(astNode.getFirstChild(JavaGrammar.QUALIFIED_IDENTIFIER));
    if (!pattern.matcher(name).matches()) {
      getContext().createLineViolation(this, "Rename this package name to match the regular expression '" + format + "'.", astNode);
    }
  }

  private String concatenate(AstNode astNode) {
    StringBuilder sb = new StringBuilder();
    for (Token token : astNode.getTokens()) {
      sb.append(token.getValue());
    }
    return sb.toString();
  }

}