org.codenarc.rule.groovyism.ExplicitCallToRightShiftMethodRule.groovy Maven / Gradle / Ivy

Go to download

Show more of this group Show more artifacts with this name
Show all versions of CodeNarc Show documentation

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

There is a newer version: 3.5.0-groovy-4.0

/*
 * 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.groovyism

import org.codehaus.groovy.ast.expr.MethodCallExpression
import org.codenarc.rule.AbstractAstVisitorRule

/**
 * This rule detects when the rightShift(Object) method is called directly in code instead of using the >> operator. A groovier way to express this: a.rightShift(b) is this: a >> b
 *
 * @author Hamlet D'Arcy
 */
class ExplicitCallToRightShiftMethodRule extends AbstractAstVisitorRule {
    String name = 'ExplicitCallToRightShiftMethod'
    int priority = 2
    Class astVisitorClass = ExplicitCallToRightShiftMethodAstVisitor
    boolean ignoreThisReference = false
}

class ExplicitCallToRightShiftMethodAstVisitor extends ExplicitCallToMethodAstVisitor {

    ExplicitCallToRightShiftMethodAstVisitor() {
        super('rightShift')
    }

    @Override
    protected String getViolationMessage(MethodCallExpression exp) {
        "Explicit call to ${exp.text} method can be rewritten as ${exp.objectExpression.text} >> ${exp.arguments.text}"
    }
}