org.sonar.javascript.checks.OneStatementPerLineCheck Maven / Gradle / Ivy
/*
* SonarQube JavaScript Plugin
* Copyright (C) 2011 SonarSource and Eriks Nukis
* [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.google.common.collect.Maps;
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.model.BlockTree;
import org.sonar.javascript.model.EmptyStatementTree;
import org.sonar.javascript.model.LabelledStatementTree;
import org.sonar.javascript.model.StatementTree;
import org.sonar.javascript.model.TreeVisitor;
import org.sonar.sslr.parser.LexerlessGrammar;
import java.util.Map;
@Rule(
key = "OneStatementPerLine",
priority = Priority.MAJOR)
@BelongsToProfile(title = CheckList.SONAR_WAY_PROFILE, priority = Priority.MAJOR)
public class OneStatementPerLineCheck extends SquidCheck implements TreeVisitor {
private final Map statementsPerLine = Maps.newHashMap();
@Override
public void visitFile(AstNode astNode) {
statementsPerLine.clear();
}
public void visit(StatementTree statementTree) {
if (statementTree.is(BlockTree.class) || statementTree.is(EmptyStatementTree.class) || statementTree.is(LabelledStatementTree.class)) {
// skip
} else {
int line = statementTree.getLine();
if (!statementsPerLine.containsKey(line)) {
statementsPerLine.put(line, 0);
}
statementsPerLine.put(line, statementsPerLine.get(line) + 1);
}
}
@Override
public void leaveFile(AstNode astNode) {
for (Map.Entry statementsAtLine : statementsPerLine.entrySet()) {
if (statementsAtLine.getValue() > 1) {
getContext().createLineViolation(this, "At most one statement is allowed per line, but {0} statements were found on this line.", statementsAtLine.getKey(),
statementsAtLine.getValue());
}
}
}
}