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1   ////////////////////////////////////////////////////////////////////////////////
2   // checkstyle: Checks Java source code for adherence to a set of rules.
3   // Copyright (C) 2001-2017 the original author or authors.
4   //
5   // This library is free software; you can redistribute it and/or
6   // modify it under the terms of the GNU Lesser General Public
7   // License as published by the Free Software Foundation; either
8   // version 2.1 of the License, or (at your option) any later version.
9   //
10  // This library is distributed in the hope that it will be useful,
11  // but WITHOUT ANY WARRANTY; without even the implied warranty of
12  // MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the GNU
13  // Lesser General Public License for more details.
14  //
15  // You should have received a copy of the GNU Lesser General Public
16  // License along with this library; if not, write to the Free Software
17  // Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA  02111-1307  USA
18  ////////////////////////////////////////////////////////////////////////////////
19  
20  package com.puppycrawl.tools.checkstyle.checks.indentation;
21  
22  import com.puppycrawl.tools.checkstyle.api.DetailAST;
23  import com.puppycrawl.tools.checkstyle.api.TokenTypes;
24  
25  /**
26   * Handler for inner classes.
27   *
28   * @author jrichard
29   */
30  public class ObjectBlockHandler extends BlockParentHandler {
31      /**
32       * Construct an instance of this handler with the given indentation check,
33       * abstract syntax tree, and parent handler.
34       *
35       * @param indentCheck   the indentation check
36       * @param ast           the abstract syntax tree
37       * @param parent        the parent handler
38       */
39      public ObjectBlockHandler(IndentationCheck indentCheck,
40          DetailAST ast, AbstractExpressionHandler parent) {
41          super(indentCheck, "object def", ast, parent);
42      }
43  
44      @Override
45      protected DetailAST getTopLevelAst() {
46          return null;
47      }
48  
49      @Override
50      protected DetailAST getLeftCurly() {
51          return getMainAst().findFirstToken(TokenTypes.LCURLY);
52      }
53  
54      @Override
55      protected DetailAST getRightCurly() {
56          return getMainAst().findFirstToken(TokenTypes.RCURLY);
57      }
58  
59      @Override
60      protected DetailAST getListChild() {
61          return getMainAst();
62      }
63  
64      @Override
65      protected IndentLevel getIndentImpl() {
66          final DetailAST parentAST = getMainAst().getParent();
67          IndentLevel indent = getParent().getIndent();
68          if (parentAST.getType() == TokenTypes.LITERAL_NEW) {
69              indent.addAcceptedIndent(super.getIndentImpl());
70          }
71          else if (parentAST.getType() == TokenTypes.ENUM_CONSTANT_DEF) {
72              indent = super.getIndentImpl();
73          }
74          return indent;
75      }
76  
77      @Override
78      public void checkIndentation() {
79          // if we have a class or interface as a parent, don't do anything,
80          // as this is checked by class def; so
81          // only do this if we have a new for a parent (anonymous inner
82          // class)
83          final DetailAST parentAST = getMainAst().getParent();
84          if (parentAST.getType() == TokenTypes.LITERAL_NEW) {
85              super.checkIndentation();
86          }
87      }
88  
89      @Override
90      protected IndentLevel curlyIndent() {
91          final IndentLevel indent = super.curlyIndent();
92          indent.addAcceptedIndent(indent.getFirstIndentLevel() + getLineWrappingIndentation());
93          return indent;
94      }
95  
96      /**
97       * A shortcut for {@code IndentationCheck} property.
98       * @return value of lineWrappingIndentation property
99       *         of {@code IndentationCheck}
100      */
101     private int getLineWrappingIndentation() {
102         return getIndentCheck().getLineWrappingIndentation();
103     }
104 }