HeapCharBuffer


1   /*
2    * @(#)Heap-X-Buffer.java   1.28 03/12/19
3    *
4    * Copyright 2004 Sun Microsystems, Inc. All rights reserved.
5    * SUN PROPRIETARY/CONFIDENTIAL. Use is subject to license terms.
6    */
7   
8   // -- This file was mechanically generated: Do not edit! -- //
9   
10  package java.nio;
11  
12  
13  /**
14  
15   * A read/write HeapCharBuffer.
16  
17  
18  
19  
20  
21  
22   */
23  
24  class HeapCharBuffer
25      extends CharBuffer  
26  {
27  
28      // For speed these fields are actually declared in X-Buffer;
29      // these declarations are here as documentation
30      /*
31  
32      protected final char[] hb;
33      protected final int offset;
34  
35      */
36  
37      HeapCharBuffer(int cap, int lim) {      // package-private
38  
39      super(-1, 0, lim, cap, new char[cap], 0);
40      /*
41      hb = new char[cap];
42      offset = 0;
43      */
44  
45  
46  
47  
48      }
49  
50      HeapCharBuffer(char[] buf, int off, int len) { // package-private
51  
52      super(-1, off, off + len, buf.length, buf, 0);
53      /*
54      hb = buf;
55      offset = 0;
56      */
57  
58  
59  
60  
61      }
62  
63      protected HeapCharBuffer(char[] buf,
64                     int mark, int pos, int lim, int cap,
65                     int off)
66      {
67  
68      super(mark, pos, lim, cap, buf, off);
69      /*
70      hb = buf;
71      offset = off;
72      */
73  
74  
75  
76  
77      }
78  
79      public CharBuffer   slice() {
80      return new HeapCharBuffer  (hb,
81                      -1,
82                      0,
83                      this.remaining(),
84                      this.remaining(),
85                      this.position() + offset);
86      }
87  
88      public CharBuffer   duplicate() {
89      return new HeapCharBuffer  (hb,
90                      this.markValue(),
91                      this.position(),
92                      this.limit(),
93                      this.capacity(),
94                      offset);
95      }
96  
97      public CharBuffer   asReadOnlyBuffer() {
98  
99      return new HeapCharBufferR  (hb,
100                      this.markValue(),
101                      this.position(),
102                      this.limit(),
103                      this.capacity(),
104                      offset);
105 
106 
107 
108     }
109 
110 
111 
112     protected int ix(int i) {
113     return i + offset;
114     }
115 
116     public char get() {
117     return hb[ix(nextGetIndex())];
118     }
119 
120     public char get(int i) {
121     return hb[ix(checkIndex(i))];
122     }
123 
124     public CharBuffer   get(char[] dst, int offset, int length) {
125     checkBounds(offset, length, dst.length);
126     if (length > remaining())
127         throw new BufferUnderflowException  ();
128     System.arraycopy(hb, ix(position()), dst, offset, length);
129     position(position() + length);
130     return this;
131     }
132 
133     public boolean isDirect() {
134     return false;
135     }
136 
137 
138 
139     public boolean isReadOnly() {
140     return false;
141     }
142 
143     public CharBuffer   put(char x) {
144 
145     hb[ix(nextPutIndex())] = x;
146     return this;
147 
148 
149 
150     }
151 
152     public CharBuffer   put(int i, char x) {
153 
154     hb[ix(checkIndex(i))] = x;
155     return this;
156 
157 
158 
159     }
160 
161     public CharBuffer   put(char[] src, int offset, int length) {
162 
163     checkBounds(offset, length, src.length);
164     if (length > remaining())
165         throw new BufferOverflowException  ();
166     System.arraycopy(src, offset, hb, ix(position()), length);
167     position(position() + length);
168     return this;
169 
170 
171 
172     }
173 
174     public CharBuffer   put(CharBuffer   src) {
175 
176     if (src instanceof HeapCharBuffer  ) {
177         if (src == this)
178         throw new IllegalArgumentException  ();
179         HeapCharBuffer   sb = (HeapCharBuffer  )src;
180         int n = sb.remaining();
181         if (n > remaining())
182         throw new BufferOverflowException  ();
183         System.arraycopy(sb.hb, sb.ix(sb.position()),
184                  hb, ix(position()), n);
185         sb.position(sb.position() + n);
186         position(position() + n);
187     } else if (src.isDirect()) {
188         int n = src.remaining();
189         if (n > remaining())
190         throw new BufferOverflowException  ();
191         src.get(hb, ix(position()), n);
192         position(position() + n);
193     } else {
194         super.put(src);
195     }
196     return this;
197 
198 
199 
200     }
201 
202     public CharBuffer   compact() {
203 
204     System.arraycopy(hb, ix(position()), hb, ix(0), remaining());
205     position(remaining());
206     limit(capacity());
207     return this;
208 
209 
210 
211     }
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540     String   toString(int start, int end) {       // package-private
541     try {
542         return new String  (hb, start + offset, end - start);
543     } catch (StringIndexOutOfBoundsException   x) {
544         throw new IndexOutOfBoundsException  ();
545     }
546     }
547 
548 
549     // --- Methods to support CharSequence ---
550 
551     public CharSequence   subSequence(int start, int end) {
552         if ((start < 0)
553         || (end > length())
554         || (start > end))
555         throw new IndexOutOfBoundsException  ();
556         int len = end - start;
557         return new HeapCharBuffer  (hb,
558                       -1, 0, len, len,
559                       offset + position() + start);
560     }
561 
562 
563 
564 
565 
566 
567     public ByteOrder   order() {
568     return ByteOrder.nativeOrder();
569     }
570 
571 
572 
573 }
574
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