| /******************************************************************************* |
| * Copyright (c) 2005, 2008 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.wst.jsdt.internal.core.util; |
| |
| import org.eclipse.wst.jsdt.core.IInitializer; |
| import org.eclipse.wst.jsdt.core.IMember; |
| import org.eclipse.wst.jsdt.core.ISourceRange; |
| import org.eclipse.wst.jsdt.core.JavaScriptModelException; |
| import org.eclipse.wst.jsdt.core.dom.ASTNode; |
| import org.eclipse.wst.jsdt.core.dom.ASTVisitor; |
| import org.eclipse.wst.jsdt.core.dom.AnonymousClassDeclaration; |
| import org.eclipse.wst.jsdt.core.dom.ClassInstanceCreation; |
| import org.eclipse.wst.jsdt.core.dom.FunctionDeclaration; |
| import org.eclipse.wst.jsdt.core.dom.IBinding; |
| import org.eclipse.wst.jsdt.core.dom.ImportDeclaration; |
| import org.eclipse.wst.jsdt.core.dom.Initializer; |
| import org.eclipse.wst.jsdt.core.dom.JavaScriptUnit; |
| import org.eclipse.wst.jsdt.core.dom.PackageDeclaration; |
| import org.eclipse.wst.jsdt.core.dom.TypeDeclaration; |
| import org.eclipse.wst.jsdt.core.dom.TypeParameter; |
| import org.eclipse.wst.jsdt.core.dom.VariableDeclarationFragment; |
| import org.eclipse.wst.jsdt.internal.core.SourceRefElement; |
| |
| public class DOMFinder extends ASTVisitor { |
| |
| public ASTNode foundNode = null; |
| public IBinding foundBinding = null; |
| |
| private JavaScriptUnit ast; |
| private SourceRefElement element; |
| private boolean resolveBinding; |
| private int rangeStart = -1, rangeLength = 0; |
| |
| public DOMFinder(JavaScriptUnit ast, SourceRefElement element, boolean resolveBinding) { |
| this.ast = ast; |
| this.element = element; |
| this.resolveBinding = resolveBinding; |
| } |
| |
| protected boolean found(ASTNode node, ASTNode name) { |
| if (name.getStartPosition() == this.rangeStart && name.getLength() == this.rangeLength) { |
| this.foundNode = node; |
| return true; |
| } |
| return false; |
| } |
| |
| public ASTNode search() throws JavaScriptModelException { |
| ISourceRange range = null; |
| if (this.element instanceof IMember && !(this.element instanceof IInitializer)) |
| range = ((IMember) this.element).getNameRange(); |
| else |
| range = this.element.getSourceRange(); |
| this.rangeStart = range.getOffset(); |
| this.rangeLength = range.getLength(); |
| this.ast.accept(this); |
| return this.foundNode; |
| } |
| |
| public boolean visit(AnonymousClassDeclaration node) { |
| ASTNode name; |
| ASTNode parent = node.getParent(); |
| switch (parent.getNodeType()) { |
| case ASTNode.CLASS_INSTANCE_CREATION: |
| name = ((ClassInstanceCreation) parent).getType(); |
| break; |
| default: |
| return true; |
| } |
| if (found(node, name) && this.resolveBinding) |
| this.foundBinding = node.resolveBinding(); |
| return true; |
| } |
| |
| public boolean visit(ImportDeclaration node) { |
| if (found(node, node) && this.resolveBinding) |
| this.foundBinding = node.resolveBinding(); |
| return true; |
| } |
| |
| public boolean visit(Initializer node) { |
| // note that no binding exists for an Initializer |
| found(node, node); |
| return true; |
| } |
| |
| public boolean visit(FunctionDeclaration node) { |
| if (found(node, node.getName()) && this.resolveBinding) |
| this.foundBinding = node.resolveBinding(); |
| return true; |
| } |
| |
| public boolean visit(PackageDeclaration node) { |
| if (found(node, node) && this.resolveBinding) |
| this.foundBinding = node.resolveBinding(); |
| return true; |
| } |
| |
| public boolean visit(TypeDeclaration node) { |
| if (found(node, node.getName()) && this.resolveBinding) |
| this.foundBinding = node.resolveBinding(); |
| return true; |
| } |
| |
| public boolean visit(TypeParameter node) { |
| if (found(node, node.getName()) && this.resolveBinding) |
| this.foundBinding = node.resolveBinding(); |
| return true; |
| } |
| |
| public boolean visit(VariableDeclarationFragment node) { |
| if (found(node, node.getName()) && this.resolveBinding) |
| this.foundBinding = node.resolveBinding(); |
| return true; |
| } |
| } |