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 member definitions. 026 * 027 * @author o_sukhodolsky 028 */ 029public class MemberDefHandler extends ExpressionHandler 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 MemberDefHandler(IndentationCheck indentCheck, 040 DetailAST ast, ExpressionHandler parent) 041 { 042 super(indentCheck, "member def", ast, parent); 043 } 044 045 @Override 046 public void checkIndentation() 047 { 048 final DetailAST modifiersNode = getMainAst().findFirstToken(TokenTypes.MODIFIERS); 049 if (modifiersNode.getChildCount() != 0) { 050 checkModifiers(); 051 } 052 else { 053 checkType(); 054 } 055 final LineWrappingHandler lineWrap = 056 new LineWrappingHandler(getIndentCheck(), getMainAst()) { 057 @Override 058 public DetailAST findLastNode(DetailAST firstNode) 059 { 060 DetailAST lastNode = getFirstNode().getLastChild(); 061 if (lastNode.getType() != TokenTypes.SEMI) { 062 lastNode = getFirstNode().getNextSibling(); 063 } 064 return lastNode; 065 } 066 }; 067 if (lineWrap.getLastNode() != null && !isArrayDeclaration(getMainAst())) { 068 lineWrap.checkIndentation(); 069 } 070 } 071 072 @Override 073 public IndentLevel suggestedChildLevel(ExpressionHandler child) 074 { 075 return getLevel(); 076 } 077 078 @Override 079 protected void checkModifiers() 080 { 081 final DetailAST modifier = getMainAst().findFirstToken(TokenTypes.MODIFIERS); 082 if (startsLine(modifier) 083 && !getLevel().accept(expandedTabsColumnNo(modifier))) 084 { 085 logError(modifier, "modifier", expandedTabsColumnNo(modifier)); 086 } 087 } 088 089 /** 090 * Check the indentation of the method type. 091 */ 092 private void checkType() 093 { 094 final DetailAST type = getMainAst().findFirstToken(TokenTypes.TYPE); 095 final DetailAST ident = ExpressionHandler.getFirstToken(type); 096 final int columnNo = expandedTabsColumnNo(ident); 097 if (startsLine(ident) && !getLevel().accept(columnNo)) { 098 logError(ident, "type", columnNo); 099 } 100 } 101 102 /** 103 * Checks if variable_def node is array declaration. 104 * @param variableDef current variable_def. 105 * @return true if variable_def node is array declaration. 106 */ 107 private boolean isArrayDeclaration(DetailAST variableDef) 108 { 109 return variableDef.findFirstToken(TokenTypes.TYPE) 110 .findFirstToken(TokenTypes.ARRAY_DECLARATOR) != null; 111 } 112}