001////////////////////////////////////////////////////////////////////////////////
002// checkstyle: Checks Java source code for adherence to a set of rules.
003// Copyright (C) 2001-2021 the original author or authors.
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////////////////////////////////////////////////////////////////////////////////
019
020package com.puppycrawl.tools.checkstyle.checks.indentation;
021
022import com.puppycrawl.tools.checkstyle.api.DetailAST;
023import com.puppycrawl.tools.checkstyle.api.TokenTypes;
024
025/**
026 * Handler for inner classes.
027 *
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, AbstractExpressionHandler parent) {
041        super(indentCheck, "object def", ast, parent);
042    }
043
044    @Override
045    protected DetailAST getTopLevelAst() {
046        return null;
047    }
048
049    @Override
050    protected DetailAST getLeftCurly() {
051        return getMainAst().findFirstToken(TokenTypes.LCURLY);
052    }
053
054    @Override
055    protected DetailAST getRightCurly() {
056        return getMainAst().findFirstToken(TokenTypes.RCURLY);
057    }
058
059    @Override
060    protected DetailAST getListChild() {
061        return getMainAst();
062    }
063
064    @Override
065    protected IndentLevel getIndentImpl() {
066        final DetailAST parentAST = getMainAst().getParent();
067        IndentLevel indent = getParent().getIndent();
068        if (parentAST.getType() == TokenTypes.LITERAL_NEW) {
069            indent = IndentLevel.addAcceptable(indent, super.getIndentImpl());
070        }
071        else if (parentAST.getType() == TokenTypes.ENUM_CONSTANT_DEF) {
072            indent = super.getIndentImpl();
073        }
074        return indent;
075    }
076
077    @Override
078    public void checkIndentation() {
079        // if we have a class or interface as a parent, don't do anything,
080        // as this is checked by class def; so
081        // only do this if we have a new for a parent (anonymous inner
082        // class)
083        final DetailAST parentAST = getMainAst().getParent();
084        if (parentAST.getType() == TokenTypes.LITERAL_NEW) {
085            super.checkIndentation();
086        }
087    }
088
089    @Override
090    protected IndentLevel curlyIndent() {
091        final IndentLevel indent = super.curlyIndent();
092        return IndentLevel.addAcceptable(indent, indent.getFirstIndentLevel()
093                + getLineWrappingIndentation());
094    }
095
096    /**
097     * A shortcut for {@code IndentationCheck} property.
098     *
099     * @return value of lineWrappingIndentation property
100     *         of {@code IndentationCheck}
101     */
102    private int getLineWrappingIndentation() {
103        return getIndentCheck().getLineWrappingIndentation();
104    }
105
106}