| /******************************************************************************* |
| * Copyright (c) 2000, 2006 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: |
| * Jesper Kamstrup Linnet (eclipse@kamstrup-linnet.dk) - initial API and implementation |
| * (report 36180: Callers/Callees view) |
| *******************************************************************************/ |
| package org.eclipse.jdt.internal.corext.callhierarchy; |
| |
| import org.eclipse.core.runtime.IAdaptable; |
| |
| import org.eclipse.jdt.core.IBuffer; |
| import org.eclipse.jdt.core.IJavaElement; |
| import org.eclipse.jdt.core.IMember; |
| import org.eclipse.jdt.core.IOpenable; |
| import org.eclipse.jdt.core.JavaModelException; |
| |
| import org.eclipse.jface.text.BadLocationException; |
| import org.eclipse.jface.text.Document; |
| |
| import org.eclipse.jdt.internal.ui.JavaPlugin; |
| |
| public class CallLocation implements IAdaptable { |
| public static final int UNKNOWN_LINE_NUMBER= -1; |
| private IMember fMember; |
| private IMember fCalledMember; |
| private int fStart; |
| private int fEnd; |
| |
| private String fCallText; |
| private int fLineNumber; |
| |
| public CallLocation(IMember member, IMember calledMember, int start, int end, int lineNumber) { |
| this.fMember = member; |
| this.fCalledMember = calledMember; |
| this.fStart = start; |
| this.fEnd = end; |
| this.fLineNumber= lineNumber; |
| } |
| |
| /** |
| * @return IMethod |
| */ |
| public IMember getCalledMember() { |
| return fCalledMember; |
| } |
| |
| /** |
| * |
| */ |
| public int getEnd() { |
| return fEnd; |
| } |
| |
| public IMember getMember() { |
| return fMember; |
| } |
| |
| /** |
| * |
| */ |
| public int getStart() { |
| return fStart; |
| } |
| |
| public int getLineNumber() { |
| initCallTextAndLineNumber(); |
| return fLineNumber; |
| } |
| |
| public String getCallText() { |
| initCallTextAndLineNumber(); |
| return fCallText; |
| } |
| |
| private void initCallTextAndLineNumber() { |
| if (fCallText != null) |
| return; |
| |
| IBuffer buffer= getBufferForMember(); |
| if (buffer == null || buffer.getLength() < fEnd) { //binary, without source attachment || buffer contents out of sync (bug 121900) |
| fCallText= ""; //$NON-NLS-1$ |
| fLineNumber= UNKNOWN_LINE_NUMBER; |
| return; |
| } |
| |
| fCallText= buffer.getText(fStart, (fEnd - fStart)); |
| |
| if (fLineNumber == UNKNOWN_LINE_NUMBER) { |
| Document document= new Document(buffer.getContents()); |
| try { |
| fLineNumber= document.getLineOfOffset(fStart) + 1; |
| } catch (BadLocationException e) { |
| JavaPlugin.log(e); |
| } |
| } |
| } |
| |
| /** |
| * Returns the IBuffer for the IMember represented by this CallLocation. |
| * |
| * @return IBuffer for the IMember or null if the member doesn't have a buffer (for |
| * example if it is a binary file without source attachment). |
| */ |
| private IBuffer getBufferForMember() { |
| IBuffer buffer = null; |
| try { |
| IOpenable openable = fMember.getOpenable(); |
| if (openable != null && fMember.exists()) { |
| buffer = openable.getBuffer(); |
| } |
| } catch (JavaModelException e) { |
| JavaPlugin.log(e); |
| } |
| return buffer; |
| } |
| |
| public String toString() { |
| return getCallText(); |
| } |
| |
| public Object getAdapter(Class adapter) { |
| if (IJavaElement.class.isAssignableFrom(adapter)) { |
| return getMember(); |
| } |
| |
| return null; |
| } |
| } |