| 1 | /******************************************************************************* |
| 2 | * Copyright (c) 2007, 2009 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; |
| 12 | |
| 13 | import org.eclipse.pde.api.tools.internal.provisional.IApiAnnotations; |
| 14 | import org.eclipse.pde.api.tools.internal.provisional.RestrictionModifiers; |
| 15 | import org.eclipse.pde.api.tools.internal.provisional.VisibilityModifiers; |
| 16 | |
| 17 | /** |
| 18 | * Base implementation of the {@linkplain IApiAnnotations} interface |
| 19 | * |
| 20 | * @since 1.0.0 |
| 21 | */ |
| 22 | public class ApiAnnotations implements IApiAnnotations { |
| 23 | |
| 24 | public static final int VISIBILITY_MASK = 0x000F; |
| 25 | public static final int RESTRICTIONS_MASK = 0x01F0; |
| 26 | public static final int OFFSET_VISIBILITY = 0; |
| 27 | public static final int OFFSET_RESTRICTIONS = 4; |
| 28 | private int bits; |
| 29 | |
| 30 | public ApiAnnotations(int visibility, int restrictions) { |
| 31 | this.bits = (visibility << OFFSET_VISIBILITY) |
| 32 | | (restrictions << OFFSET_RESTRICTIONS); |
| 33 | } |
| 34 | |
| 35 | /* (non-Javadoc) |
| 36 | * @see org.eclipse.pde.api.tools.model.IApiAnnotations#getRestrictions() |
| 37 | */ |
| 38 | public int getRestrictions() { |
| 39 | return (this.bits & RESTRICTIONS_MASK) >> OFFSET_RESTRICTIONS; |
| 40 | } |
| 41 | |
| 42 | /* (non-Javadoc) |
| 43 | * @see org.eclipse.pde.api.tools.model.IApiAnnotations#getVisibility() |
| 44 | */ |
| 45 | public int getVisibility() { |
| 46 | return (this.bits & VISIBILITY_MASK) >> OFFSET_VISIBILITY; |
| 47 | } |
| 48 | |
| 49 | /* (non-Javadoc) |
| 50 | * @see java.lang.Object#toString() |
| 51 | */ |
| 52 | public String toString() { |
| 53 | StringBuffer buffer = new StringBuffer(); |
| 54 | buffer.append(VisibilityModifiers.getVisibilityName(getVisibility())); |
| 55 | buffer.append(" / "); //$NON-NLS-1$ |
| 56 | int restrictions = getRestrictions(); |
| 57 | buffer.append(RestrictionModifiers.getRestrictionText(restrictions)); |
| 58 | return buffer.toString(); |
| 59 | } |
| 60 | |
| 61 | /* (non-Javadoc) |
| 62 | * @see java.lang.Object#equals(java.lang.Object) |
| 63 | */ |
| 64 | public boolean equals(Object obj) { |
| 65 | if (obj instanceof ApiAnnotations) { |
| 66 | ApiAnnotations desc = (ApiAnnotations) obj; |
| 67 | return |
| 68 | this.bits == desc.bits; |
| 69 | } |
| 70 | return false; |
| 71 | } |
| 72 | |
| 73 | /* (non-Javadoc) |
| 74 | * @see java.lang.Object#hashCode() |
| 75 | */ |
| 76 | public int hashCode() { |
| 77 | return this.bits; |
| 78 | } |
| 79 | |
| 80 | } |