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1
11 package org.eclipse.jdt.internal.core.search.matching;
12
13 import org.eclipse.core.runtime.CoreException;
14 import org.eclipse.jdt.core.IJavaElement;
15 import org.eclipse.jdt.internal.compiler.ast.*;
16 import org.eclipse.jdt.internal.compiler.lookup.Binding;
17 import org.eclipse.jdt.internal.compiler.lookup.LocalVariableBinding;
18 import org.eclipse.jdt.internal.core.LocalVariable;
19
20 public class LocalVariableLocator extends VariableLocator {
21
22 public LocalVariableLocator(LocalVariablePattern pattern) {
23 super(pattern);
24 }
25 public int match(LocalDeclaration node, MatchingNodeSet nodeSet) {
26 int referencesLevel = IMPOSSIBLE_MATCH;
27 if (this.pattern.findReferences)
28 if (this.pattern.writeAccess && !this.pattern.readAccess && node.initialization != null)
30 if (matchesName(this.pattern.name, node.name))
31 referencesLevel = ((InternalSearchPattern)this.pattern).mustResolve ? POSSIBLE_MATCH : ACCURATE_MATCH;
32
33 int declarationsLevel = IMPOSSIBLE_MATCH;
34 if (this.pattern.findDeclarations)
35 if (matchesName(this.pattern.name, node.name))
36 if (node.declarationSourceStart == getLocalVariable().declarationSourceStart)
37 declarationsLevel = ((InternalSearchPattern)this.pattern).mustResolve ? POSSIBLE_MATCH : ACCURATE_MATCH;
38
39 return nodeSet.addMatch(node, referencesLevel >= declarationsLevel ? referencesLevel : declarationsLevel); }
41 private LocalVariable getLocalVariable() {
42 return ((LocalVariablePattern) this.pattern).localVariable;
43 }
44 protected void matchReportReference(ASTNode reference, IJavaElement element, Binding elementBinding, int accuracy, MatchLocator locator) throws CoreException {
45 int offset = -1;
46 int length = -1;
47 if (reference instanceof SingleNameReference) {
48 offset = reference.sourceStart;
49 length = reference.sourceEnd-offset+1;
50 } else if (reference instanceof QualifiedNameReference) {
51 QualifiedNameReference qNameRef = (QualifiedNameReference) reference;
52 long sourcePosition = qNameRef.sourcePositions[0];
53 offset = (int) (sourcePosition >>> 32);
54 length = ((int) sourcePosition) - offset +1;
55 } else if (reference instanceof LocalDeclaration) {
56 LocalVariable localVariable = getLocalVariable();
57 offset = localVariable.nameStart;
58 length = localVariable.nameEnd-offset+1;
59 element = localVariable;
60 }
61 if (offset >= 0) {
62 match = locator.newLocalVariableReferenceMatch(element, accuracy, offset, length, reference);
63 locator.report(match);
64 }
65 }
66 protected int matchContainer() {
67 return METHOD_CONTAINER;
68 }
69 protected int matchLocalVariable(LocalVariableBinding variable, boolean matchName) {
70 if (variable == null) return INACCURATE_MATCH;
71
72 if (matchName && !matchesName(this.pattern.name, variable.readableName())) return IMPOSSIBLE_MATCH;
73
74 return variable.declaration.declarationSourceStart == getLocalVariable().declarationSourceStart
75 ? ACCURATE_MATCH
76 : IMPOSSIBLE_MATCH;
77 }
78 protected int referenceType() {
79 return IJavaElement.LOCAL_VARIABLE;
80 }
81 public int resolveLevel(ASTNode possiblelMatchingNode) {
82 if (this.pattern.findReferences)
83 if (possiblelMatchingNode instanceof NameReference)
84 return resolveLevel((NameReference) possiblelMatchingNode);
85 if (possiblelMatchingNode instanceof LocalDeclaration)
86 return matchLocalVariable(((LocalDeclaration) possiblelMatchingNode).binding, true);
87 return IMPOSSIBLE_MATCH;
88 }
89 public int resolveLevel(Binding binding) {
90 if (binding == null) return INACCURATE_MATCH;
91 if (!(binding instanceof LocalVariableBinding)) return IMPOSSIBLE_MATCH;
92
93 return matchLocalVariable((LocalVariableBinding) binding, true);
94 }
95 protected int resolveLevel(NameReference nameRef) {
96 return resolveLevel(nameRef.binding);
97 }
98 }
99 |
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