001////////////////////////////////////////////////////////////////////////////////
002// checkstyle: Checks Java source code for adherence to a set of rules.
003// Copyright (C) 2001-2014  Oliver Burn
004//
005// This library is free software; you can redistribute it and/or
006// modify it under the terms of the GNU Lesser General Public
007// License as published by the Free Software Foundation; either
008// version 2.1 of the License, or (at your option) any later version.
009//
010// This library is distributed in the hope that it will be useful,
011// but WITHOUT ANY WARRANTY; without even the implied warranty of
012// MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the GNU
013// Lesser General Public License for more details.
014//
015// You should have received a copy of the GNU Lesser General Public
016// License along with this library; if not, write to the Free Software
017// Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA  02111-1307  USA
018////////////////////////////////////////////////////////////////////////////////
019package com.puppycrawl.tools.checkstyle.checks.indentation;
020
021import com.puppycrawl.tools.checkstyle.api.DetailAST;
022import com.puppycrawl.tools.checkstyle.api.TokenTypes;
023
024/**
025 * Handler for inner classes.
026 *
027 * @author jrichard
028 */
029public class ObjectBlockHandler extends BlockParentHandler
030{
031    /**
032     * Construct an instance of this handler with the given indentation check,
033     * abstract syntax tree, and parent handler.
034     *
035     * @param indentCheck   the indentation check
036     * @param ast           the abstract syntax tree
037     * @param parent        the parent handler
038     */
039    public ObjectBlockHandler(IndentationCheck indentCheck,
040        DetailAST ast, ExpressionHandler parent)
041    {
042        super(indentCheck, "object def", ast, parent);
043    }
044
045    @Override
046    protected DetailAST getToplevelAST()
047    {
048        return null;
049    }
050
051    @Override
052    protected DetailAST getLCurly()
053    {
054        return getMainAst().findFirstToken(TokenTypes.LCURLY);
055    }
056
057    @Override
058    protected DetailAST getRCurly()
059    {
060        return getMainAst().findFirstToken(TokenTypes.RCURLY);
061    }
062
063    @Override
064    protected DetailAST getListChild()
065    {
066        return getMainAst();
067    }
068
069    @Override
070    protected IndentLevel getLevelImpl()
071    {
072        final DetailAST parentAST = getMainAst().getParent();
073        IndentLevel indent = getParent().getLevel();
074        if (parentAST.getType() == TokenTypes.LITERAL_NEW) {
075            indent.addAcceptedIndent(super.getLevelImpl());
076        }
077        else if (parentAST.getType() == TokenTypes.ENUM_CONSTANT_DEF) {
078            indent = super.getLevelImpl();
079        }
080        return indent;
081    }
082
083    @Override
084    public void checkIndentation()
085    {
086        // if we have a class or interface as a parent, don't do anything,
087        // as this is checked by class def; so
088        // only do this if we have a new for a parent (anonymous inner
089        // class)
090        final DetailAST parentAST = getMainAst().getParent();
091        if (parentAST.getType() != TokenTypes.LITERAL_NEW) {
092            return;
093        }
094
095        super.checkIndentation();
096    }
097
098    @Override
099    protected boolean rcurlyMustStart()
100    {
101        return false;
102    }
103
104    @Override
105    protected void checkRCurly()
106    {
107        final DetailAST lcurly = getLCurly();
108        final DetailAST rcurly = getRCurly();
109        final int rcurlyPos = expandedTabsColumnNo(rcurly);
110        final IndentLevel level = curlyLevel();
111        level.addAcceptedIndent(level.getFirstIndentLevel() + getLineWrappingIndent());
112
113        if ((rcurly != null) && !level.accept(rcurlyPos)
114            && (rcurlyMustStart() || startsLine(rcurly))
115                && !areOnSameLine(rcurly, lcurly))
116        {
117            logError(rcurly, "rcurly", rcurlyPos, curlyLevel());
118        }
119    }
120
121    /**
122     * A shortcut for <code>IndentationCheck</code> property.
123     * @return value of lineWrappingIndentation property
124     *         of <code>IndentationCheck</code>
125     */
126    private int getLineWrappingIndent()
127    {
128        return getIndentCheck().getLineWrappingIndentation();
129    }
130}