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1 package net.sourceforge.pmd.dfa.pathfinder;
2
3 import net.sourceforge.pmd.dfa.IDataFlowNode;
4 import net.sourceforge.pmd.dfa.NodeType;
5
6 import java.util.Iterator  ;
7 import java.util.LinkedList ;
8
9 public class CurrentPath {
10
11 private LinkedList list;
12
13 public CurrentPath() {
14 list = new LinkedList ();
15 }
16
17 public int getLength() {
18 return list.size();
19 }
20
21 public Iterator iterator() {
22 return list.iterator();
23 }
24
25 public IDataFlowNode getLast() {
26 return (IDataFlowNode) list.getLast();
27 }
28
29 public void removeLast() {
30 list.removeLast();
31 }
32
33 public boolean isEmpty() {
34 return list.isEmpty();
35 }
36
37 public void addLast(IDataFlowNode n) {
38 list.addLast(n);
39 }
41
42 public boolean isDoBranchNode() {
43 return ((IDataFlowNode) list.getLast()).isType(NodeType.DO_EXPR);
44 }
45
46 public boolean isFirstDoStatement() {
47 return isFirstDoStatement((IDataFlowNode) list.getLast());
48 }
49
50 public IDataFlowNode getDoBranchNodeFromFirstDoStatement() {
51 IDataFlowNode inode = (IDataFlowNode) list.getLast();
52 if (!isFirstDoStatement()) return null;
53 for (int i = 0; i < inode.getParents().size(); i++) {
54 IDataFlowNode parent = (IDataFlowNode) inode.getParents().get(i);
55 if (parent.isType(NodeType.DO_EXPR)) {
56 return parent;
57 }
58 }
59 return null;
60 }
61
62 public boolean isEndNode() {
63 return ((IDataFlowNode) list.getLast()).getChildren().size() == 0;
64 }
66
67 public boolean isBranch() {
68 return ((IDataFlowNode) list.getLast()).getChildren().size() > 1;
69 }
70
71 private boolean isFirstDoStatement(IDataFlowNode inode) {
72 int index = inode.getIndex() - 1;
73 if (index < 0) return false;
74 return ((IDataFlowNode) inode.getFlow().get(index)).isType(NodeType.DO_BEFORE_FIRST_STATEMENT);
75 }
76 }
77
78 |
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