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10 package java.nio;
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13 class ByteBufferAsCharBufferRB extends ByteBufferAsCharBufferB 
15 {
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24 ByteBufferAsCharBufferRB(ByteBuffer bb) {
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37 super(bb);
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39 }
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41 ByteBufferAsCharBufferRB(ByteBuffer bb,
42 int mark, int pos, int lim, int cap,
43 int off)
44 {
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50 super(bb, mark, pos, lim, cap, off);
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52 }
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54 public CharBuffer slice() {
55 int pos = this.position();
56 int lim = this.limit();
57 assert (pos <= lim);
58 int rem = (pos <= lim ? lim - pos : 0);
59 int off = (pos << 1) + offset;
60 assert (off >= 0);
61 return new ByteBufferAsCharBufferRB (bb, -1, 0, rem, rem, off);
62 }
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64 public CharBuffer duplicate() {
65 return new ByteBufferAsCharBufferRB (bb,
66 this.markValue(),
67 this.position(),
68 this.limit(),
69 this.capacity(),
70 offset);
71 }
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73 public CharBuffer asReadOnlyBuffer() {
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82 return duplicate();
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84 }
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102 public CharBuffer put(char x) {
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107 throw new ReadOnlyBufferException ();
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109 }
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111 public CharBuffer put(int i, char x) {
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116 throw new ReadOnlyBufferException ();
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118 }
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120 public CharBuffer compact() {
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137 throw new ReadOnlyBufferException ();
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139 }
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141 public boolean isDirect() {
142 return bb.isDirect();
143 }
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145 public boolean isReadOnly() {
146 return true;
147 }
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151 public String toString(int start, int end) {
152 if ((end > limit()) || (start > end))
153 throw new IndexOutOfBoundsException ();
154 try {
155 int len = end - start;
156 char[] ca = new char[len];
157 CharBuffer cb = CharBuffer.wrap(ca);
158 CharBuffer db = this.duplicate();
159 db.position(start);
160 db.limit(end);
161 cb.put(db);
162 return new String (ca);
163 } catch (StringIndexOutOfBoundsException x) {
164 throw new IndexOutOfBoundsException ();
165 }
166 }
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171 public CharSequence subSequence(int start, int end) {
172 int pos = position();
173 int lim = limit();
174 assert (pos <= lim);
175 pos = (pos <= lim ? pos : lim);
176 int len = lim - pos;
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178 if ((start < 0) || (end > len) || (start > end))
179 throw new IndexOutOfBoundsException ();
180 int sublen = end - start;
181 int off = offset + ((pos + start) << 1);
182 assert (off >= 0);
183 return new ByteBufferAsCharBufferRB (bb, -1, 0, sublen, sublen, off);
184 }
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189 public ByteOrder order() {
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191 return ByteOrder.BIG_ENDIAN;
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196 }
197
198 }
199 |
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