////////////////////////////////////////////////////////////////////////////////
// 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.indentation;
import com.puppycrawl.tools.checkstyle.api.DetailAST;
import com.puppycrawl.tools.checkstyle.api.TokenTypes;
/**
* Handler for labels.
*
* @author jrichard
*/
public class LabelHandler extends AbstractExpressionHandler {
/**
* The types of expressions that are children of a label.
*/
private static final int[] LABEL_CHILDREN = {
TokenTypes.IDENT,
};
/**
* Construct an instance of this handler with the given indentation check,
* abstract syntax tree, and parent handler.
*
* @param indentCheck the indentation check
* @param expr the abstract syntax tree
* @param parent the parent handler
*/
public LabelHandler(IndentationCheck indentCheck,
DetailAST expr, AbstractExpressionHandler parent) {
super(indentCheck, "label", expr, parent);
}
@Override
protected IndentLevel getIndentImpl() {
final IndentLevel level = new IndentLevel(super.getIndentImpl(), -getBasicOffset());
level.addAcceptedIndent(super.getIndentImpl());
return level;
}
/**
* Check the indentation of the label.
*/
private void checkLabel() {
checkChildren(getMainAst(), LABEL_CHILDREN, getIndent(), true, false);
}
@Override
public void checkIndentation() {
checkLabel();
// need to check children (like 'block' parents do)
final DetailAST parent = getMainAst().getFirstChild().getNextSibling();
final IndentLevel expected =
new IndentLevel(getIndent(), getBasicOffset());
checkExpressionSubtree(parent, expected, true, false);
}
}