org.sonar.javascript.checks.AlwaysUseCurlyBracesCheck Maven / Gradle / Ivy

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/*
 * Sonar JavaScript Plugin
 * Copyright (C) 2011 Eriks Nukis and 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.javascript.checks;

import com.sonar.sslr.api.AstNode;
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.javascript.api.EcmaScriptGrammar;
import org.sonar.javascript.api.EcmaScriptKeyword;

import java.util.List;

@Rule(
  key = "CurlyBraces",
  priority = Priority.MAJOR)
@BelongsToProfile(title = CheckList.SONAR_WAY_PROFILE, priority = Priority.MAJOR)
public class AlwaysUseCurlyBracesCheck extends SquidCheck {

  @Override
  public void init() {
    subscribeTo(
        getContext().getGrammar().ifStatement,
        getContext().getGrammar().forInStatement,
        getContext().getGrammar().forStatement,
        getContext().getGrammar().whileStatement,
        getContext().getGrammar().doWhileStatement);
  }

  @Override
  public void visitNode(AstNode astNode) {
    List statements = astNode.findDirectChildren(getContext().getGrammar().statement);
    for (AstNode statement : statements) {
      if (statement.getChild(0).is(getContext().getGrammar().ifStatement)
          && statement.previousSibling().is(EcmaScriptKeyword.ELSE)) {
        continue;
      }
      if (!statement.getChild(0).is(getContext().getGrammar().block)) {
        getContext().createLineViolation(this, "Missing curly brace.", statement);
        break;
      }
    }
  }

}