1 /*
2 * Copyright (c) 2011-2024 Qulice.com
3 *
4 * All rights reserved.
5 *
6 * Redistribution and use in source and binary forms, with or without
7 * modification, are permitted provided that the following conditions
8 * are met: 1) Redistributions of source code must retain the above
9 * copyright notice, this list of conditions and the following
10 * disclaimer. 2) Redistributions in binary form must reproduce the above
11 * copyright notice, this list of conditions and the following
12 * disclaimer in the documentation and/or other materials provided
13 * with the distribution. 3) Neither the name of the Qulice.com nor
14 * the names of its contributors may be used to endorse or promote
15 * products derived from this software without specific prior written
16 * permission.
17 *
18 * THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS
19 * "AS IS" AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT
20 * NOT LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND
21 * FITNESS FOR A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL
22 * THE COPYRIGHT HOLDER OR CONTRIBUTORS BE LIABLE FOR ANY DIRECT,
23 * INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES
24 * (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR
25 * SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
26 * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT,
27 * STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE)
28 * ARISING IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED
29 * OF THE POSSIBILITY OF SUCH DAMAGE.
30 */
31 package com.qulice.checkstyle;
32
33 import com.puppycrawl.tools.checkstyle.api.AbstractCheck;
34 import com.puppycrawl.tools.checkstyle.api.DetailAST;
35 import com.puppycrawl.tools.checkstyle.api.TokenTypes;
36
37 /**
38 * Checks that try-with-resources does not end with a semicolon. Implementation
39 * relies on existence of semicolon inside of RESOURCE_SPECIFICATION token
40 * as interpreted by Checkstyle.
41 *
42 * @since 0.15
43 */
44 public final class FinalSemicolonInTryWithResourcesCheck extends AbstractCheck {
45
46 @Override
47 public int[] getDefaultTokens() {
48 return new int[]{
49 TokenTypes.RESOURCE_SPECIFICATION,
50 };
51 }
52
53 @Override
54 public int[] getAcceptableTokens() {
55 return this.getDefaultTokens();
56 }
57
58 @Override
59 public int[] getRequiredTokens() {
60 return this.getDefaultTokens();
61 }
62
63 @Override
64 public void visitToken(final DetailAST ast) {
65 final int semicolons = ast.getChildCount(TokenTypes.SEMI);
66 if (semicolons > 0) {
67 this.log(
68 ast.getLineNo(),
69 "Extra semicolon in the end of try-with-resources head."
70 );
71 }
72 }
73 }