1 |
| |
2 |
| |
3 |
| |
4 |
| package net.sourceforge.pmd.rules; |
5 |
| |
6 |
| import net.sourceforge.pmd.AbstractRule; |
7 |
| import net.sourceforge.pmd.ast.ASTArgumentList; |
8 |
| import net.sourceforge.pmd.ast.ASTArguments; |
9 |
| import net.sourceforge.pmd.ast.ASTBlock; |
10 |
| import net.sourceforge.pmd.ast.ASTClassOrInterfaceBodyDeclaration; |
11 |
| import net.sourceforge.pmd.ast.ASTClassOrInterfaceDeclaration; |
12 |
| import net.sourceforge.pmd.ast.ASTFormalParameter; |
13 |
| import net.sourceforge.pmd.ast.ASTFormalParameters; |
14 |
| import net.sourceforge.pmd.ast.ASTMethodDeclaration; |
15 |
| import net.sourceforge.pmd.ast.ASTMethodDeclarator; |
16 |
| import net.sourceforge.pmd.ast.ASTName; |
17 |
| import net.sourceforge.pmd.ast.ASTPrimaryExpression; |
18 |
| import net.sourceforge.pmd.ast.ASTPrimaryPrefix; |
19 |
| import net.sourceforge.pmd.ast.ASTPrimarySuffix; |
20 |
| import net.sourceforge.pmd.ast.ASTStatement; |
21 |
| import net.sourceforge.pmd.ast.ASTVariableDeclaratorId; |
22 |
| import net.sourceforge.pmd.ast.Node; |
23 |
| import net.sourceforge.pmd.ast.SimpleNode; |
24 |
| |
25 |
| import java.util.ArrayList; |
26 |
| import java.util.List; |
27 |
| |
28 |
| public class UselessOverridingMethod extends AbstractRule { |
29 |
| |
30 |
17
| public Object visit(ASTClassOrInterfaceDeclaration clz, Object data) {
|
31 |
17
| if (clz.isInterface()) {
|
32 |
1
| return data;
|
33 |
| } |
34 |
16
| return super.visit(clz, data);
|
35 |
| } |
36 |
| |
37 |
15
| public Object visit(ASTMethodDeclaration node, Object data) {
|
38 |
| |
39 |
| |
40 |
| |
41 |
15
| if (node.isAbstract() || node.isFinal() || node.isNative() || node.isSynchronized()) {
|
42 |
3
| return super.visit(node, data);
|
43 |
| } |
44 |
| |
45 |
12
| ASTBlock block = node.getBlock();
|
46 |
12
| if (block == null) {
|
47 |
0
| return super.visit(node, data);
|
48 |
| } |
49 |
| |
50 |
12
| if (block.jjtGetNumChildren() != 1 || block.findChildrenOfType(ASTStatement.class).size() != 1)
|
51 |
0
| return super.visit(node, data);
|
52 |
| |
53 |
12
| ASTStatement statement = (ASTStatement) block.jjtGetChild(0).jjtGetChild(0);
|
54 |
12
| if (statement.jjtGetChild(0).jjtGetNumChildren() == 0) {
|
55 |
1
| return data;
|
56 |
| } |
57 |
11
| SimpleNode statementGrandChild = (SimpleNode) statement.jjtGetChild(0).jjtGetChild(0);
|
58 |
11
| ASTPrimaryExpression primaryExpression;
|
59 |
| |
60 |
11
| if (statementGrandChild instanceof ASTPrimaryExpression)
|
61 |
8
| primaryExpression = (ASTPrimaryExpression) statementGrandChild;
|
62 |
| else { |
63 |
3
| List primaryExpressions = findFirstDegreeChildrenOfType(statementGrandChild, ASTPrimaryExpression.class);
|
64 |
3
| if (primaryExpressions.size() != 1)
|
65 |
1
| return super.visit(node, data);
|
66 |
2
| primaryExpression = (ASTPrimaryExpression) primaryExpressions.get(0);
|
67 |
| } |
68 |
| |
69 |
10
| ASTPrimaryPrefix primaryPrefix = (ASTPrimaryPrefix) findFirstDegreeChildrenOfType(primaryExpression, ASTPrimaryPrefix.class).get(0);
|
70 |
10
| if (!primaryPrefix.usesSuperModifier())
|
71 |
0
| return super.visit(node, data);
|
72 |
| |
73 |
10
| ASTMethodDeclarator methodDeclarator = (ASTMethodDeclarator) findFirstDegreeChildrenOfType(node, ASTMethodDeclarator.class).get(0);
|
74 |
10
| if (!primaryPrefix.hasImageEqualTo(methodDeclarator.getImage()))
|
75 |
0
| return super.visit(node, data);
|
76 |
| |
77 |
| |
78 |
10
| ASTPrimarySuffix primarySuffix = (ASTPrimarySuffix) findFirstDegreeChildrenOfType(primaryExpression, ASTPrimarySuffix.class).get(0);
|
79 |
10
| ASTArguments arguments = (ASTArguments) primarySuffix.jjtGetChild(0);
|
80 |
10
| ASTFormalParameters formalParameters = (ASTFormalParameters) methodDeclarator.jjtGetChild(0);
|
81 |
10
| if (formalParameters.jjtGetNumChildren() != arguments.jjtGetNumChildren())
|
82 |
1
| return super.visit(node, data);
|
83 |
| |
84 |
9
| if (arguments.jjtGetNumChildren() == 0)
|
85 |
2
| addViolation(data, node, getMessage());
|
86 |
| else { |
87 |
7
| ASTArgumentList argumentList = (ASTArgumentList) arguments.jjtGetChild(0);
|
88 |
7
| for (int i = 0; i < argumentList.jjtGetNumChildren(); i++) {
|
89 |
8
| Node ExpressionChild = argumentList.jjtGetChild(i).jjtGetChild(0);
|
90 |
8
| if (!(ExpressionChild instanceof ASTPrimaryExpression) || ExpressionChild.jjtGetNumChildren() != 1)
|
91 |
2
| return super.visit(node, data);
|
92 |
| |
93 |
6
| ASTPrimaryExpression argumentPrimaryExpression = (ASTPrimaryExpression) ExpressionChild;
|
94 |
6
| ASTPrimaryPrefix argumentPrimaryPrefix = (ASTPrimaryPrefix) argumentPrimaryExpression.jjtGetChild(0);
|
95 |
6
| if (argumentPrimaryPrefix.jjtGetNumChildren() == 0) {
|
96 |
1
| return super.visit(node, data);
|
97 |
| } |
98 |
5
| Node argumentPrimaryPrefixChild = argumentPrimaryPrefix.jjtGetChild(0);
|
99 |
5
| if (!(argumentPrimaryPrefixChild instanceof ASTName))
|
100 |
0
| return super.visit(node, data);
|
101 |
| |
102 |
5
| if (formalParameters.jjtGetNumChildren() < i + 1) {
|
103 |
1
| return super.visit(node, data);
|
104 |
| } |
105 |
| |
106 |
4
| ASTName argumentName = (ASTName) argumentPrimaryPrefixChild;
|
107 |
4
| ASTFormalParameter formalParameter = (ASTFormalParameter) formalParameters.jjtGetChild(i);
|
108 |
4
| ASTVariableDeclaratorId variableId = (ASTVariableDeclaratorId) findFirstDegreeChildrenOfType(formalParameter, ASTVariableDeclaratorId.class).get(0);
|
109 |
4
| if (!argumentName.hasImageEqualTo(variableId.getImage())) {
|
110 |
1
| return super.visit(node, data);
|
111 |
| } |
112 |
| |
113 |
| } |
114 |
2
| addViolation(data, node, getMessage());
|
115 |
| } |
116 |
4
| return super.visit(node, data);
|
117 |
| } |
118 |
| |
119 |
37
| public List findFirstDegreeChildrenOfType(SimpleNode n, Class targetType) {
|
120 |
37
| List l = new ArrayList();
|
121 |
37
| lclFindChildrenOfType(n, targetType, l);
|
122 |
37
| return l;
|
123 |
| } |
124 |
| |
125 |
37
| private void lclFindChildrenOfType(Node node, Class targetType, List results) {
|
126 |
37
| if (node.getClass().equals(targetType)) {
|
127 |
0
| results.add(node);
|
128 |
| } |
129 |
| |
130 |
37
| if (node instanceof ASTClassOrInterfaceDeclaration && ((ASTClassOrInterfaceDeclaration) node).isNested()) {
|
131 |
0
| return;
|
132 |
| } |
133 |
| |
134 |
37
| if (node instanceof ASTClassOrInterfaceBodyDeclaration && ((ASTClassOrInterfaceBodyDeclaration) node).isAnonymousInnerClass()) {
|
135 |
0
| return;
|
136 |
| } |
137 |
| |
138 |
37
| for (int i = 0; i < node.jjtGetNumChildren(); i++) {
|
139 |
81
| Node child = node.jjtGetChild(i);
|
140 |
81
| if (child.getClass().equals(targetType)) {
|
141 |
36
| results.add(child);
|
142 |
| } |
143 |
| } |
144 |
| } |
145 |
| } |