1 /* 2 * Copyright Amazon.com, Inc. or its affiliates. All Rights Reserved. 3 * 4 * Licensed under the Apache License, Version 2.0 (the "License"). 5 * You may not use this file except in compliance with the License. 6 * A copy of the License is located at 7 * 8 * http://aws.amazon.com/apache2.0 9 * 10 * or in the "license" file accompanying this file. This file is distributed 11 * on an "AS IS" BASIS, WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either 12 * express or implied. See the License for the specific language governing 13 * permissions and limitations under the License. 14 */ 15 16 package software.amazon.awssdk.buildtools.checkstyle; 17 18 import com.puppycrawl.tools.checkstyle.api.AbstractCheck; 19 import com.puppycrawl.tools.checkstyle.api.DetailAST; 20 import com.puppycrawl.tools.checkstyle.api.TokenTypes; 21 import com.puppycrawl.tools.checkstyle.utils.ScopeUtil; 22 23 /** 24 * A rule that disallows unnecessary 'final' on local variables 25 */ 26 public class UnnecessaryFinalOnLocalVariableCheck extends AbstractCheck { 27 28 @Override getDefaultTokens()29 public int[] getDefaultTokens() { 30 return getRequiredTokens(); 31 } 32 33 @Override getAcceptableTokens()34 public int[] getAcceptableTokens() { 35 return getRequiredTokens(); 36 } 37 38 @Override getRequiredTokens()39 public int[] getRequiredTokens() { 40 return new int[] { TokenTypes.VARIABLE_DEF }; 41 } 42 43 @Override visitToken(DetailAST ast)44 public void visitToken(DetailAST ast) { 45 if (ScopeUtil.isLocalVariableDef(ast) && ast.findFirstToken(TokenTypes.MODIFIERS) 46 .findFirstToken(TokenTypes.FINAL) != null) { 47 log(ast, "final should be removed from local variable"); 48 } 49 } 50 } 51