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1 package org.incava.java;
2
3 import java.util.*;
4 import net.sourceforge.pmd.ast.*;
5
6
7
10 public class FieldUtil extends SimpleNodeUtil
11 {
12 public static Token getName(ASTVariableDeclarator vd)
13 {
14 ASTVariableDeclaratorId vid = (ASTVariableDeclaratorId)findChild(vd, ASTVariableDeclaratorId.class);
15 Token nameTk = vid.getFirstToken();
16 return nameTk;
17 }
18
19 public static ASTVariableDeclarator[] getVariableDeclarators(ASTFieldDeclaration fld)
20 {
21 return (ASTVariableDeclarator[])findChildren(fld, ASTVariableDeclarator.class);
22 }
23
24
28 public static String  getNames(ASTFieldDeclaration fld)
29 {
30 ASTVariableDeclarator[] avds = getVariableDeclarators(fld);
31 StringBuffer buf = new StringBuffer ();
32 for (int ai = 0; ai < avds.length; ++ai) {
33 ASTVariableDeclarator avd = avds[ai];
34 if (ai > 0) {
35 buf.append(", ");
36 }
37 buf.append(VariableUtil.getName(avd).image);
38 }
39 return buf.toString();
40 }
41
42 public static double getMatchScore(ASTFieldDeclaration a, ASTFieldDeclaration b)
43 {
44 ASTVariableDeclarator[] avds = getVariableDeclarators(a);
45 ASTVariableDeclarator[] bvds = getVariableDeclarators(b);
46
47 Token[] aNames = VariableUtil.getVariableNames(avds);
48 Token[] bNames = VariableUtil.getVariableNames(bvds);
49
50 int matched = 0;
51 int i = 0;
52 while (i < aNames.length && i < bNames.length) {
53 if (aNames[i].image.equals(bNames[i].image)) {
54 ++matched;
55 }
56 ++i;
57 }
58
59 int count = Math.max(aNames.length, bNames.length);
60
61 double score = 0.5 * matched / count;
62
63 ASTType aType = (ASTType)findChild(a, ASTType.class);
64 ASTType bType = (ASTType)findChild(b, ASTType.class);
65
66 if (toString(aType).equals(toString(bType))) {
67 score += 0.5;
68 }
69
70 return score;
71 }
72
73 }
74
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