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1
4 package net.sourceforge.pmd.rules.design;
5
6 import net.sourceforge.pmd.AbstractRule;
7 import net.sourceforge.pmd.ast.ASTClassOrInterfaceDeclaration;
8 import net.sourceforge.pmd.ast.ASTClassOrInterfaceType;
9 import net.sourceforge.pmd.ast.ASTCompilationUnit;
10 import net.sourceforge.pmd.ast.ASTConstructorDeclaration;
11 import net.sourceforge.pmd.ast.ASTFieldDeclaration;
12 import net.sourceforge.pmd.ast.ASTMethodDeclaration;
13 import net.sourceforge.pmd.ast.ASTResultType;
14
15 public class UseSingleton extends AbstractRule {
16
17 private boolean isOK;
18 private int methodCount;
19
20 public Object  visit(ASTCompilationUnit cu, Object data) {
21 methodCount = 0;
22 isOK = false;
23 Object result = cu.childrenAccept(this, data);
24 if (!isOK && methodCount > 0) {
25 addViolation(data, cu);
26 }
27
28 return result;
29 }
30
31 public Object visit(ASTFieldDeclaration decl, Object data) {
32 if (!decl.isStatic()) {
33 isOK = true;
34 }
35 return data;
36 }
37
38 public Object visit(ASTConstructorDeclaration decl, Object data) {
39 if (decl.isPrivate()) {
40 isOK = true;
41 }
42 return data;
43 }
44
45 public Object visit(ASTClassOrInterfaceDeclaration decl, Object data) {
46 if (decl.isAbstract()) {
47 isOK = true;
48 }
49 return super.visit(decl, data);
50 }
51
52 public Object visit(ASTMethodDeclaration decl, Object data) {
53 methodCount++;
54
55 if (!isOK && !decl.isStatic()) {
56 isOK = true;
57 }
58
59 if (decl.getMethodName().equals("suite")) {
61 ASTResultType res = (ASTResultType) decl.getFirstChildOfType(ASTResultType.class);
62 ASTClassOrInterfaceType c = (ASTClassOrInterfaceType) res.getFirstChildOfType(ASTClassOrInterfaceType.class);
63 if (c != null && c.hasImageEqualTo("Test")) {
64 isOK = true;
65 }
66 }
67
68 return data;
69 }
70
71 }
72 |
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