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UnnecessaryFinalOnLocalVariableCheck.java
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UnnecessaryFinalOnLocalVariableCheck.java
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/*
* Copyright 2010-2019 Amazon.com, Inc. or its affiliates. All Rights Reserved.
*
* Licensed under the Apache License, Version 2.0 (the "License").
* You may not use this file except in compliance with the License.
* A copy of the License is located at
*
* http://aws.amazon.com/apache2.0
*
* or in the "license" file accompanying this file. This file 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 software.amazon.awssdk.buildtools.checkstyle;
import com.puppycrawl.tools.checkstyle.api.AbstractCheck;
import com.puppycrawl.tools.checkstyle.api.DetailAST;
import com.puppycrawl.tools.checkstyle.api.TokenTypes;
import com.puppycrawl.tools.checkstyle.utils.ScopeUtils;
/**
* A rule that disallows unnecessary 'final' on local variables
*/
public class UnnecessaryFinalOnLocalVariableCheck extends AbstractCheck {
@Override
public int[] getDefaultTokens() {
return getRequiredTokens();
}
@Override
public int[] getAcceptableTokens() {
return getRequiredTokens();
}
@Override
public int[] getRequiredTokens() {
return new int[] { TokenTypes.VARIABLE_DEF };
}
@Override
public void visitToken(DetailAST ast) {
if (ScopeUtils.isLocalVariableDef(ast) && ast.findFirstToken(TokenTypes.MODIFIERS)
.findFirstToken(TokenTypes.FINAL) != null) {
log(ast, "final should be removed from local variable");
}
}
}