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 method definitions. 026 * 027 * @author jrichard 028 * @author Maikel Steneker 029 */ 030public class MethodDefHandler extends BlockParentHandler 031{ 032 /** 033 * Construct an instance of this handler with the given indentation check, 034 * abstract syntax tree, and parent handler. 035 * 036 * @param indentCheck the indentation check 037 * @param ast the abstract syntax tree 038 * @param parent the parent handler 039 */ 040 public MethodDefHandler(IndentationCheck indentCheck, 041 DetailAST ast, ExpressionHandler parent) 042 { 043 super(indentCheck, (ast.getType() == TokenTypes.CTOR_DEF) 044 ? "ctor def" : "method def", ast, parent); 045 } 046 047 @Override 048 protected DetailAST getToplevelAST() 049 { 050 // we check this stuff ourselves below 051 return null; 052 } 053 054 @Override 055 protected void checkModifiers() 056 { 057 final DetailAST modifier = getMainAst().findFirstToken(TokenTypes.MODIFIERS); 058 if (startsLine(modifier) 059 && !getLevel().accept(expandedTabsColumnNo(modifier))) 060 { 061 logError(modifier, "modifier", expandedTabsColumnNo(modifier)); 062 } 063 } 064 065 @Override 066 public void checkIndentation() 067 { 068 checkModifiers(); 069 070 final LineWrappingHandler lineWrap = 071 new LineWrappingHandler(getIndentCheck(), getMainAst()) { 072 @Override 073 public DetailAST findLastNode(DetailAST firstNode) 074 { 075 return firstNode.getLastChild().getPreviousSibling(); 076 } 077 }; 078 lineWrap.checkIndentation(); 079 if (getLCurly() == null) { 080 // asbtract method def -- no body 081 return; 082 } 083 super.checkIndentation(); 084 } 085}