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 for loops. 026 * 027 * @author jrichard 028 */ 029public class ForHandler 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 ForHandler(IndentationCheck indentCheck, 040 DetailAST ast, ExpressionHandler parent) 041 { 042 super(indentCheck, "for", ast, parent); 043 } 044 045 /** 046 * Check the indentation of the parameters of the 'for' loop. 047 */ 048 private void checkForParams() 049 { 050 final IndentLevel expected = 051 new IndentLevel(getLevel(), getBasicOffset()); 052 final DetailAST init = getMainAst().findFirstToken(TokenTypes.FOR_INIT); 053 054 if (init != null) { 055 checkExpressionSubtree(init, expected, false, false); 056 057 final DetailAST cond = 058 getMainAst().findFirstToken(TokenTypes.FOR_CONDITION); 059 checkExpressionSubtree(cond, expected, false, false); 060 061 final DetailAST iter = 062 getMainAst().findFirstToken(TokenTypes.FOR_ITERATOR); 063 checkExpressionSubtree(iter, expected, false, false); 064 } 065 // for each 066 else { 067 final DetailAST forEach = 068 getMainAst().findFirstToken(TokenTypes.FOR_EACH_CLAUSE); 069 checkExpressionSubtree(forEach, expected, false, false); 070 } 071 } 072 073 @Override 074 public void checkIndentation() 075 { 076 checkForParams(); 077 super.checkIndentation(); 078 final LineWrappingHandler lineWrap = 079 new LineWrappingHandler(getIndentCheck(), getMainAst()); 080 lineWrap.checkIndentation(); 081 } 082 083 @Override 084 public IndentLevel suggestedChildLevel(ExpressionHandler child) 085 { 086 if (child instanceof ElseHandler) { 087 return getLevel(); 088 } 089 return super.suggestedChildLevel(child); 090 } 091}