com.liferay.source.formatter.checkstyle.checks.BaseUnnecessaryStatementCheck Maven / Gradle / Ivy
/**
* Copyright (c) 2000-present Liferay, Inc. All rights reserved.
*
* This library 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 2.1 of the License, or (at your option)
* any later version.
*
* This library 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.
*/
package com.liferay.source.formatter.checkstyle.checks;
import com.puppycrawl.tools.checkstyle.api.DetailAST;
import com.puppycrawl.tools.checkstyle.api.TokenTypes;
/**
* @author Hugo Huijser
*/
public abstract class BaseUnnecessaryStatementCheck extends BaseCheck {
protected void checkUnnecessaryStatementBeforeReassign(
DetailAST detailAST, DetailAST firstNextVariableCallerDetailAST,
DetailAST secondNextVariableCallerDetailAST, DetailAST slistDetailAST,
String variableName, String messageKey) {
if (firstNextVariableCallerDetailAST.getPreviousSibling() != null) {
return;
}
DetailAST parentDetailAST =
firstNextVariableCallerDetailAST.getParent();
if (parentDetailAST.getType() != TokenTypes.ASSIGN) {
return;
}
parentDetailAST = parentDetailAST.getParent();
if ((parentDetailAST.getType() != TokenTypes.EXPR) ||
!equals(parentDetailAST.getParent(), slistDetailAST)) {
return;
}
if ((secondNextVariableCallerDetailAST == null) ||
(secondNextVariableCallerDetailAST.getLineNo() > getEndLineNumber(
parentDetailAST))) {
log(detailAST, messageKey, variableName);
}
}
protected void checkUnnecessaryStatementBeforeReturn(
DetailAST detailAST, DetailAST semiDetailAST, String variableName,
String messageKey) {
DetailAST nextSiblingDetailAST = semiDetailAST.getNextSibling();
if ((nextSiblingDetailAST == null) ||
(nextSiblingDetailAST.getType() != TokenTypes.LITERAL_RETURN) ||
(getHiddenBefore(nextSiblingDetailAST) != null)) {
return;
}
DetailAST firstChildDetailAST = nextSiblingDetailAST.getFirstChild();
if (firstChildDetailAST.getType() != TokenTypes.EXPR) {
return;
}
firstChildDetailAST = firstChildDetailAST.getFirstChild();
if ((firstChildDetailAST.getType() == TokenTypes.IDENT) &&
variableName.equals(firstChildDetailAST.getText())) {
log(detailAST, messageKey, variableName);
}
}
}