Source code: com/puppycrawl/tools/checkstyle/checks/whitespace/AbstractParenPadCheck.java
1 ////////////////////////////////////////////////////////////////////////////////
2 // checkstyle: Checks Java source code for adherence to a set of rules.
3 // Copyright (C) 2001-2003 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.whitespace;
20
21 import com.puppycrawl.tools.checkstyle.api.DetailAST;
22 import com.puppycrawl.tools.checkstyle.api.Utils;
23 import com.puppycrawl.tools.checkstyle.checks.AbstractOptionCheck;
24
25 /**
26 * <p>Abstract class for checking the padding of parentheses. That is whether a
27 * space is required after a left parenthesis and before a right parenthesis,
28 * or such spaces are forbidden.
29 * </p>
30 * @author Oliver Burn
31 * @version 1.0
32 */
33 abstract class AbstractParenPadCheck
34 extends AbstractOptionCheck
35 {
36 /**
37 * Sets the paren pad otion to nospace.
38 */
39 AbstractParenPadCheck()
40 {
41 super(PadOption.NOSPACE);
42 }
43
44 /**
45 * Process a token representing a left parentheses.
46 * @param aAST the token representing a left parentheses
47 */
48 protected void processLeft(DetailAST aAST)
49 {
50 final String line = getLines()[aAST.getLineNo() - 1];
51 final int after = aAST.getColumnNo() + 1;
52 if (after < line.length()) {
53 if ((PadOption.NOSPACE == getAbstractOption())
54 && (Character.isWhitespace(line.charAt(after))))
55 {
56 log(aAST.getLineNo(), after, "ws.followed", "(");
57 }
58 else if ((PadOption.SPACE == getAbstractOption())
59 && !Character.isWhitespace(line.charAt(after))
60 && (line.charAt(after) != ')'))
61 {
62 log(aAST.getLineNo(), after, "ws.notFollowed", "(");
63 }
64 }
65 }
66
67 /**
68 * Process a token representing a right parentheses.
69 * @param aAST the token representing a right parentheses
70 */
71 protected void processRight(DetailAST aAST)
72 {
73 final String line = getLines()[aAST.getLineNo() - 1];
74 final int before = aAST.getColumnNo() - 1;
75 if (before >= 0) {
76 if ((PadOption.NOSPACE == getAbstractOption())
77 && Character.isWhitespace(line.charAt(before))
78 && !Utils.whitespaceBefore(before, line))
79 {
80 log(aAST.getLineNo(), before, "ws.preceded", ")");
81 }
82 else if ((PadOption.SPACE == getAbstractOption())
83 && !Character.isWhitespace(line.charAt(before))
84 && (line.charAt(before) != '('))
85 {
86 log(aAST.getLineNo(), aAST.getColumnNo(),
87 "ws.notPreceded", ")");
88 }
89 }
90 }
91 }