| /******************************************************************************* |
| * Copyright (c) 2000, 2004 IBM Corporation and others. |
| * All rights reserved. This program and the accompanying materials |
| * are made available under the terms of the Eclipse Public License v1.0 |
| * which accompanies this distribution, and is available at |
| * http://www.eclipse.org/legal/epl-v10.html |
| * |
| * Contributors: |
| * IBM Corporation - initial API and implementation |
| *******************************************************************************/ |
| package org.eclipse.jdt.internal.core.search.matching; |
| |
| import org.eclipse.core.runtime.CoreException; |
| import org.eclipse.jdt.core.IJavaElement; |
| import org.eclipse.jdt.internal.compiler.ast.*; |
| import org.eclipse.jdt.internal.compiler.lookup.Binding; |
| import org.eclipse.jdt.internal.compiler.lookup.LocalVariableBinding; |
| import org.eclipse.jdt.internal.core.LocalVariable; |
| |
| public class LocalVariableLocator extends VariableLocator { |
| |
| public LocalVariableLocator(LocalVariablePattern pattern) { |
| super(pattern); |
| } |
| public int match(LocalDeclaration node, MatchingNodeSet nodeSet) { |
| int referencesLevel = IMPOSSIBLE_MATCH; |
| if (this.pattern.findReferences) |
| // must be a write only access with an initializer |
| if (this.pattern.writeAccess && !this.pattern.readAccess && node.initialization != null) |
| if (matchesName(this.pattern.name, node.name)) |
| referencesLevel = ((InternalSearchPattern)this.pattern).mustResolve ? POSSIBLE_MATCH : ACCURATE_MATCH; |
| |
| int declarationsLevel = IMPOSSIBLE_MATCH; |
| if (this.pattern.findDeclarations) |
| if (matchesName(this.pattern.name, node.name)) |
| if (node.declarationSourceStart == getLocalVariable().declarationSourceStart) |
| declarationsLevel = ((InternalSearchPattern)this.pattern).mustResolve ? POSSIBLE_MATCH : ACCURATE_MATCH; |
| |
| return nodeSet.addMatch(node, referencesLevel >= declarationsLevel ? referencesLevel : declarationsLevel); // use the stronger match |
| } |
| private LocalVariable getLocalVariable() { |
| return ((LocalVariablePattern) this.pattern).localVariable; |
| } |
| protected void matchReportReference(ASTNode reference, IJavaElement element, Binding elementBinding, int accuracy, MatchLocator locator) throws CoreException { |
| int offset = -1; |
| int length = -1; |
| if (reference instanceof SingleNameReference) { |
| offset = reference.sourceStart; |
| length = reference.sourceEnd-offset+1; |
| } else if (reference instanceof QualifiedNameReference) { |
| QualifiedNameReference qNameRef = (QualifiedNameReference) reference; |
| long sourcePosition = qNameRef.sourcePositions[0]; |
| offset = (int) (sourcePosition >>> 32); |
| length = ((int) sourcePosition) - offset +1; |
| } else if (reference instanceof LocalDeclaration) { |
| LocalVariable localVariable = getLocalVariable(); |
| offset = localVariable.nameStart; |
| length = localVariable.nameEnd-offset+1; |
| element = localVariable; |
| } |
| if (offset >= 0) { |
| match = locator.newLocalVariableReferenceMatch(element, accuracy, offset, length, reference); |
| locator.report(match); |
| } |
| } |
| protected int matchContainer() { |
| return METHOD_CONTAINER; |
| } |
| protected int matchLocalVariable(LocalVariableBinding variable, boolean matchName) { |
| if (variable == null) return INACCURATE_MATCH; |
| |
| if (matchName && !matchesName(this.pattern.name, variable.readableName())) return IMPOSSIBLE_MATCH; |
| |
| return variable.declaration.declarationSourceStart == getLocalVariable().declarationSourceStart |
| ? ACCURATE_MATCH |
| : IMPOSSIBLE_MATCH; |
| } |
| protected int referenceType() { |
| return IJavaElement.LOCAL_VARIABLE; |
| } |
| public int resolveLevel(ASTNode possiblelMatchingNode) { |
| if (this.pattern.findReferences) |
| if (possiblelMatchingNode instanceof NameReference) |
| return resolveLevel((NameReference) possiblelMatchingNode); |
| if (possiblelMatchingNode instanceof LocalDeclaration) |
| return matchLocalVariable(((LocalDeclaration) possiblelMatchingNode).binding, true); |
| return IMPOSSIBLE_MATCH; |
| } |
| public int resolveLevel(Binding binding) { |
| if (binding == null) return INACCURATE_MATCH; |
| if (!(binding instanceof LocalVariableBinding)) return IMPOSSIBLE_MATCH; |
| |
| return matchLocalVariable((LocalVariableBinding) binding, true); |
| } |
| protected int resolveLevel(NameReference nameRef) { |
| return resolveLevel(nameRef.binding); |
| } |
| } |