1 ///////////////////////////////////////////////////////////////////////////////////////////////
2 // checkstyle: Checks Java source code and other text files for adherence to a set of rules.
3 // Copyright (C) 2001-2025 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.naming;
21
22 import com.puppycrawl.tools.checkstyle.api.DetailAST;
23 import com.puppycrawl.tools.checkstyle.api.TokenTypes;
24 import com.puppycrawl.tools.checkstyle.utils.ScopeUtil;
25
26 /**
27 * <div>
28 * Checks that instance variable names conform to a specified pattern.
29 * </div>
30 *
31 * @since 3.0
32 */
33 public class MemberNameCheck
34 extends AbstractAccessControlNameCheck {
35
36 /** Creates a new {@code MemberNameCheck} instance. */
37 public MemberNameCheck() {
38 super("^[a-z][a-zA-Z0-9]*$");
39 }
40
41 @Override
42 public int[] getDefaultTokens() {
43 return getRequiredTokens();
44 }
45
46 @Override
47 public int[] getAcceptableTokens() {
48 return getRequiredTokens();
49 }
50
51 @Override
52 public int[] getRequiredTokens() {
53 return new int[] {TokenTypes.VARIABLE_DEF};
54 }
55
56 /**
57 * Setter to control if check should apply to package-private members.
58 *
59 * @param applyTo new value of the property.
60 * @propertySince 3.4
61 */
62 @Override
63 public final void setApplyToPackage(boolean applyTo) {
64 super.setApplyToPackage(applyTo);
65 }
66
67 /**
68 * Setter to control if check should apply to private members.
69 *
70 * @param applyTo new value of the property.
71 * @propertySince 3.4
72 */
73 @Override
74 public final void setApplyToPrivate(boolean applyTo) {
75 super.setApplyToPrivate(applyTo);
76 }
77
78 /**
79 * Setter to control if check should apply to protected members.
80 *
81 * @param applyTo new value of the property.
82 * @propertySince 3.4
83 */
84 @Override
85 public final void setApplyToProtected(boolean applyTo) {
86 super.setApplyToProtected(applyTo);
87 }
88
89 /**
90 * Setter to control if check should apply to public members.
91 *
92 * @param applyTo new value of the property.
93 * @propertySince 3.4
94 */
95 @Override
96 public final void setApplyToPublic(boolean applyTo) {
97 super.setApplyToPublic(applyTo);
98 }
99
100 @Override
101 protected final boolean mustCheckName(DetailAST ast) {
102 final DetailAST modifiersAST =
103 ast.findFirstToken(TokenTypes.MODIFIERS);
104 final boolean isStatic = modifiersAST.findFirstToken(TokenTypes.LITERAL_STATIC) != null;
105
106 return !isStatic && !ScopeUtil.isInInterfaceOrAnnotationBlock(ast)
107 && !ScopeUtil.isLocalVariableDef(ast)
108 && shouldCheckInScope(modifiersAST);
109 }
110
111 }