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| package net.sourceforge.pmd.rules.optimization; |
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| |
3 |
| import java.util.Set; |
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| |
5 |
| import net.sourceforge.pmd.AbstractRule; |
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| import net.sourceforge.pmd.RuleContext; |
7 |
| import net.sourceforge.pmd.SourceType; |
8 |
| import net.sourceforge.pmd.ast.ASTName; |
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| import net.sourceforge.pmd.ast.ASTPrimaryExpression; |
10 |
| import net.sourceforge.pmd.ast.ASTPrimaryPrefix; |
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| import net.sourceforge.pmd.ast.ASTPrimarySuffix; |
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| import net.sourceforge.pmd.ast.Node; |
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| import net.sourceforge.pmd.util.CollectionUtil; |
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| |
15 |
| public class UnnecessaryWrapperObjectCreation extends AbstractRule { |
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| |
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| private static final Set prefixSet = CollectionUtil.asSet(new String[] { |
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| "Byte.valueOf", |
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| "Short.valueOf", |
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| "Integer.valueOf", |
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| "Long.valueOf", |
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| "Float.valueOf", |
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| "Double.valueOf", |
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| "Character.valueOf" |
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| }); |
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| |
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| private static final Set suffixSet = CollectionUtil.asSet(new String[] { |
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| "byteValue", |
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| "shortValue", |
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| "intValue", |
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| "longValue", |
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| "floatValue", |
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| "doubleValue", |
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| "charValue" |
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| }); |
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| |
37 |
6
| public Object visit(ASTPrimaryPrefix node, Object data) {
|
38 |
6
| if (node.jjtGetNumChildren() == 0 || !node.jjtGetChild(0).getClass().equals(ASTName.class)) {
|
39 |
0
| return super.visit(node, data);
|
40 |
| } |
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| |
42 |
6
| String image = ((ASTName) node.jjtGetChild(0)).getImage();
|
43 |
6
| if (image.startsWith("java.lang.")) {
|
44 |
0
| image = image.substring(10);
|
45 |
| } |
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| |
47 |
6
| boolean checkBoolean = ((RuleContext) data).getSourceType().compareTo(SourceType.JAVA_15) >= 0;
|
48 |
| |
49 |
6
| if (prefixSet.contains(image)||(checkBoolean && "Boolean.valueOf".equals(image))) {
|
50 |
3
| ASTPrimaryExpression parent = (ASTPrimaryExpression) node.jjtGetParent();
|
51 |
3
| if (parent.jjtGetNumChildren() >= 3) {
|
52 |
2
| Node n = parent.jjtGetChild(2);
|
53 |
2
| if (n instanceof ASTPrimarySuffix) {
|
54 |
2
| ASTPrimarySuffix suffix = (ASTPrimarySuffix) n;
|
55 |
2
| image = suffix.getImage();
|
56 |
| |
57 |
2
| if (suffixSet.contains(image)||(checkBoolean && "booleanValue".equals(image))) {
|
58 |
2
| super.addViolation(data, node);
|
59 |
2
| return data;
|
60 |
| } |
61 |
| } |
62 |
| } |
63 |
| } |
64 |
4
| return super.visit(node, data);
|
65 |
| } |
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| |
67 |
| } |