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1
4 package net.sourceforge.pmd.symboltable;
5
6 import net.sourceforge.pmd.ast.ASTName;
7 import net.sourceforge.pmd.ast.SimpleNode;
8 import net.sourceforge.pmd.util.Applier;
9
10 import java.util.ArrayList  ;
11 import java.util.HashMap ;
12 import java.util.List ;
13 import java.util.Map ;
14
15 public class LocalScope extends AbstractScope {
16
17 protected Map variableNames = new HashMap ();
18
19 public NameDeclaration addVariableNameOccurrence(NameOccurrence occurrence) {
20 NameDeclaration decl = findVariableHere(occurrence);
21 if (decl != null && !occurrence.isThisOrSuper()) {
22 List nameOccurrences = (List ) variableNames.get(decl);
23 nameOccurrences.add(occurrence);
24 SimpleNode n = occurrence.getLocation();
25 if (n instanceof ASTName) {
26 ((ASTName) n).setNameDeclaration(decl);
27 } }
29 return decl;
30 }
31
32 public Map getVariableDeclarations() {
33 VariableUsageFinderFunction f = new VariableUsageFinderFunction(variableNames);
34 Applier.apply(f, variableNames.keySet().iterator());
35 return f.getUsed();
36 }
37
38 public void addDeclaration(VariableNameDeclaration nameDecl) {
39 if (variableNames.containsKey(nameDecl)) {
40 throw new RuntimeException ("Variable " + nameDecl + " is already in the symbol table");
41 }
42 variableNames.put(nameDecl, new ArrayList ());
43 }
44
45 public NameDeclaration findVariableHere(NameOccurrence occurrence) {
46 if (occurrence.isThisOrSuper() || occurrence.isMethodOrConstructorInvocation()) {
47 return null;
48 }
49 ImageFinderFunction finder = new ImageFinderFunction(occurrence.getImage());
50 Applier.apply(finder, variableNames.keySet().iterator());
51 return finder.getDecl();
52 }
53
54 public String toString() {
55 return "LocalScope:" + glomNames(variableNames.keySet().iterator());
56 }
57 }
58 |
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