Classes in this File | Line Coverage | Branch Coverage | Complexity | ||||
IfHandler |
|
| 2.0;2 |
1 | //////////////////////////////////////////////////////////////////////////////// | |
2 | // checkstyle: Checks Java source code for adherence to a set of rules. | |
3 | // Copyright (C) 2001-2014 Oliver Burn | |
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 | package com.puppycrawl.tools.checkstyle.checks.indentation; | |
20 | ||
21 | import com.puppycrawl.tools.checkstyle.api.DetailAST; | |
22 | import com.puppycrawl.tools.checkstyle.api.TokenTypes; | |
23 | ||
24 | /** | |
25 | * Handler for if statements. | |
26 | * | |
27 | * @author jrichard | |
28 | */ | |
29 | public class IfHandler extends BlockParentHandler | |
30 | { | |
31 | /** | |
32 | * Construct an instance of this handler with the given indentation check, | |
33 | * abstract syntax tree, and parent handler. | |
34 | * | |
35 | * @param aIndentCheck the indentation check | |
36 | * @param aAst the abstract syntax tree | |
37 | * @param aParent the parent handler | |
38 | */ | |
39 | public IfHandler(IndentationCheck aIndentCheck, | |
40 | DetailAST aAst, ExpressionHandler aParent) | |
41 | { | |
42 | 100 | super(aIndentCheck, "if", aAst, aParent); |
43 | 100 | } |
44 | ||
45 | @Override | |
46 | public IndentLevel suggestedChildLevel(ExpressionHandler aChild) | |
47 | { | |
48 | 113 | if (aChild instanceof ElseHandler) { |
49 | 46 | return getLevel(); |
50 | } | |
51 | 67 | return super.suggestedChildLevel(aChild); |
52 | } | |
53 | ||
54 | @Override | |
55 | protected IndentLevel getLevelImpl() | |
56 | { | |
57 | 100 | if (isIfAfterElse()) { |
58 | 12 | return getParent().getLevel(); |
59 | } | |
60 | 88 | return super.getLevelImpl(); |
61 | } | |
62 | ||
63 | /** | |
64 | * Determines if this 'if' statement is part of an 'else' clause | |
65 | * and on the same line. | |
66 | * | |
67 | * @return true if this 'if' is part of an 'else', false otherwise | |
68 | */ | |
69 | private boolean isIfAfterElse() | |
70 | { | |
71 | // check if there is an 'else' and an 'if' on the same line | |
72 | 200 | final DetailAST parent = getMainAst().getParent(); |
73 | 200 | return (parent.getType() == TokenTypes.LITERAL_ELSE) |
74 | && (parent.getLineNo() == getMainAst().getLineNo()); | |
75 | } | |
76 | ||
77 | @Override | |
78 | protected void checkToplevelToken() | |
79 | { | |
80 | 100 | if (isIfAfterElse()) { |
81 | 12 | return; |
82 | } | |
83 | ||
84 | 88 | super.checkToplevelToken(); |
85 | 88 | } |
86 | ||
87 | /** | |
88 | * Check the indentation of the conditional expression. | |
89 | */ | |
90 | private void checkCondExpr() | |
91 | { | |
92 | 100 | final DetailAST condAst = getMainAst().findFirstToken(TokenTypes.LPAREN) |
93 | .getNextSibling(); | |
94 | 100 | final IndentLevel expected = |
95 | new IndentLevel(getLevel(), getBasicOffset()); | |
96 | 100 | checkExpressionSubtree(condAst, expected, false, false); |
97 | 100 | } |
98 | ||
99 | @Override | |
100 | public void checkIndentation() | |
101 | { | |
102 | 100 | super.checkIndentation(); |
103 | 100 | checkCondExpr(); |
104 | 100 | } |
105 | } |