org.codenarc.rule.basic.EmptyForStatementRule.groovy Maven / Gradle / Ivy

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The CodeNarc project provides a static analysis tool for Groovy code.

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/*
 * Copyright 2009 the original author or 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 org.codenarc.rule.basic

import org.codehaus.groovy.ast.stmt.ForStatement
import org.codenarc.rule.AbstractAstVisitor
import org.codenarc.rule.AbstractAstVisitorRule
import org.codenarc.util.AstUtil

/**
 * Rule that checks for empty for statements
 *
 * @author Chris Mair
 */
class EmptyForStatementRule extends AbstractAstVisitorRule {
    String name = 'EmptyForStatement'
    int priority = 2
    Class astVisitorClass = EmptyForStatementAstVisitor
}

class EmptyForStatementAstVisitor extends AbstractAstVisitor  {
    @Override
    void visitForLoop(ForStatement forStatement) {
        if (isFirstVisit(forStatement) && AstUtil.isEmptyBlock(forStatement.loopBlock)) {
            addViolation(forStatement, 'The for statement is empty')
        }
        super.visitForLoop(forStatement)
    }

}