////////////////////////////////////////////////////////////////////////////////
// checkstyle: Checks Java source code for adherence to a set of rules.
// Copyright (C) 2001-2017 the original author or authors.
//
// 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.
//
// You should have received a copy of the GNU Lesser General Public
// License along with this library; if not, write to the Free Software
// Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA 02111-1307 USA
////////////////////////////////////////////////////////////////////////////////
package com.puppycrawl.tools.checkstyle.checks;
import com.puppycrawl.tools.checkstyle.api.AbstractCheck;
import com.puppycrawl.tools.checkstyle.api.DetailAST;
import com.puppycrawl.tools.checkstyle.api.TokenTypes;
/**
* Checks the style of array type definitions.
* Some like Java-style: {@code public static void main(String[] args)}
* and some like C-style: public static void main(String args[])
*
* <p>By default the Check enforces Java style.
* @author lkuehne
*/
public class ArrayTypeStyleCheck extends AbstractCheck {
/**
* A key is pointing to the warning message text in "messages.properties"
* file.
*/
public static final String MSG_KEY = "array.type.style";
/** Controls whether to use Java or C style. */
private boolean javaStyle = true;
@Override
public int[] getDefaultTokens() {
return getAcceptableTokens();
}
@Override
public int[] getAcceptableTokens() {
return new int[] {TokenTypes.ARRAY_DECLARATOR};
}
@Override
public int[] getRequiredTokens() {
return getAcceptableTokens();
}
@Override
public void visitToken(DetailAST ast) {
final DetailAST typeAST = ast.getParent();
if (typeAST.getType() == TokenTypes.TYPE
// Do not check method's return type.
// We have no alternatives here.
&& typeAST.getParent().getType() != TokenTypes.METHOD_DEF) {
final DetailAST variableAST = typeAST.getNextSibling();
if (variableAST != null) {
final boolean isJavaStyle =
variableAST.getLineNo() > ast.getLineNo()
|| variableAST.getColumnNo() > ast.getColumnNo();
if (isJavaStyle != javaStyle) {
log(ast.getLineNo(), ast.getColumnNo(), MSG_KEY);
}
}
}
}
/**
* Controls whether to check for Java or C style.
* @param javaStyle true if Java style should be used.
*/
public void setJavaStyle(boolean javaStyle) {
this.javaStyle = javaStyle;
}
}