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Java > Open Source Codes > org > eclipse > jdt > internal > core > util > RuntimeVisibleParameterAnnotationsAttribute


1 /*******************************************************************************
2  * Copyright (c) 2004, 2006 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.jdt.internal.core.util;
12
13 import org.eclipse.jdt.core.util.ClassFormatException;
14 import org.eclipse.jdt.core.util.IConstantPool;
15 import org.eclipse.jdt.core.util.IParameterAnnotation;
16 import org.eclipse.jdt.core.util.IRuntimeVisibleParameterAnnotationsAttribute;
17
18 /**
19  * Default implementation of IRuntimeVisibleAnnotations
20  */
21 public class RuntimeVisibleParameterAnnotationsAttribute
22     extends ClassFileAttribute
23     implements IRuntimeVisibleParameterAnnotationsAttribute {
24
25     private static final IParameterAnnotation[] NO_ENTRIES = new IParameterAnnotation[0];
26     private int parametersNumber;
27     private IParameterAnnotation[] parameterAnnotations;
28     
29     /**
30      * Constructor for RuntimeVisibleParameterAnnotations.
31      * @param classFileBytes
32      * @param constantPool
33      * @param offset
34      * @throws ClassFormatException
35      */
36     public RuntimeVisibleParameterAnnotationsAttribute(
37         byte[] classFileBytes,
38         IConstantPool constantPool,
39         int offset)
40         throws ClassFormatException {
41         super(classFileBytes, constantPool, offset);
42         final int length = u1At(classFileBytes, 6, offset);
43         this.parametersNumber = length;
44         if (length != 0) {
45             int readOffset = 7;
46             this.parameterAnnotations = new IParameterAnnotation[length];
47             for (int i = 0; i < length; i++) {
48                 ParameterAnnotation parameterAnnotation = new ParameterAnnotation(classFileBytes, constantPool, offset + readOffset);
49                 this.parameterAnnotations[i] = parameterAnnotation;
50                 readOffset += parameterAnnotation.sizeInBytes();
51             }
52         } else {
53             this.parameterAnnotations = NO_ENTRIES;
54         }
55     }
56     /* (non-Javadoc)
57      * @see org.eclipse.jdt.core.util.IRuntimeVisibleParameterAnnotations#getAnnotations()
58      */
59     public IParameterAnnotation[] getParameterAnnotations() {
60         return this.parameterAnnotations;
61     }
62     /* (non-Javadoc)
63      * @see org.eclipse.jdt.core.util.IRuntimeVisibleParameterAnnotations#getParametersNumber()
64      */
65     public int getParametersNumber() {
66         return this.parametersNumber;
67     }
68 }
69
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