| 1 | /******************************************************************************* |
| 2 | * Copyright (c) 2007, 2008 IBM Corporation and others. |
| 3 | * All rights reserved. This program and the accompanying materials |
| 4 | * are made available under the terms of the Eclipse Public License v1.0 |
| 5 | * which accompanies this distribution, and is available at |
| 6 | * http://www.eclipse.org/legal/epl-v10.html |
| 7 | * |
| 8 | * Contributors: |
| 9 | * IBM Corporation - initial API and implementation |
| 10 | *******************************************************************************/ |
| 11 | package org.eclipse.pde.api.tools.internal.comparator; |
| 12 | |
| 13 | import java.util.ArrayList; |
| 14 | import java.util.Iterator; |
| 15 | import java.util.List; |
| 16 | |
| 17 | import org.eclipse.pde.api.tools.internal.util.Util; |
| 18 | |
| 19 | /** |
| 20 | * Represents a type parameter inside a generic signature |
| 21 | */ |
| 22 | class TypeParameterDescriptor { |
| 23 | private static final String JAVA_LANG_OBJECT = "java.lang.Object"; //$NON-NLS-1$ |
| 24 | String classBound; |
| 25 | List interfaceBounds; |
| 26 | String name; |
| 27 | |
| 28 | public TypeParameterDescriptor(String name) { |
| 29 | this.name = name; |
| 30 | } |
| 31 | |
| 32 | public void addInterfaceBound(String bound) { |
| 33 | if (this.interfaceBounds == null) { |
| 34 | this.interfaceBounds = new ArrayList(); |
| 35 | } |
| 36 | this.interfaceBounds.add(bound); |
| 37 | } |
| 38 | |
| 39 | public void setClassBound(String bound) { |
| 40 | if (JAVA_LANG_OBJECT.equals(bound)) { |
| 41 | // we consider Object as an implicit bound |
| 42 | // <E> is implicitly <E extends Object> |
| 43 | return; |
| 44 | } |
| 45 | this.classBound = bound; |
| 46 | } |
| 47 | |
| 48 | public String toString() { |
| 49 | StringBuffer buffer = new StringBuffer(); |
| 50 | buffer.append("type parameter ").append(this.name).append(" : ").append(Util.LINE_DELIMITER); //$NON-NLS-1$ //$NON-NLS-2$ |
| 51 | if (this.classBound != null) { |
| 52 | buffer.append("class bound : ").append(this.classBound).append(Util.LINE_DELIMITER); //$NON-NLS-1$ |
| 53 | } |
| 54 | if (this.interfaceBounds != null) { |
| 55 | buffer.append("interface bounds : "); //$NON-NLS-1$ |
| 56 | int i = 0; |
| 57 | for (Iterator iterator = this.interfaceBounds.iterator(); iterator.hasNext(); ) { |
| 58 | if (i > 0) buffer.append(','); |
| 59 | i++; |
| 60 | buffer.append(iterator.next()); |
| 61 | } |
| 62 | buffer.append(Util.LINE_DELIMITER); |
| 63 | } |
| 64 | return String.valueOf(buffer); |
| 65 | } |
| 66 | } |