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10 package java.nio;
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12
13 class ByteBufferAsLongBufferB extends LongBuffer 
15 {
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19 protected final ByteBuffer bb;
20 protected final int offset;
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24 ByteBufferAsLongBufferB(ByteBuffer bb) {
26 super(-1, 0,
27 bb.remaining() >> 3,
28 bb.remaining() >> 3);
29 this.bb = bb;
30 int cap = this.capacity();
32 this.limit(cap);
33 int pos = this.position();
34 assert (pos <= cap);
35 offset = pos;
36
37
38
39 }
40
41 ByteBufferAsLongBufferB(ByteBuffer bb,
42 int mark, int pos, int lim, int cap,
43 int off)
44 {
45
46 super(mark, pos, lim, cap);
47 this.bb = bb;
48 offset = off;
49
50
51
52 }
53
54 public LongBuffer 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 << 3) + offset;
60 assert (off >= 0);
61 return new ByteBufferAsLongBufferB (bb, -1, 0, rem, rem, off);
62 }
63
64 public LongBuffer duplicate() {
65 return new ByteBufferAsLongBufferB (bb,
66 this.markValue(),
67 this.position(),
68 this.limit(),
69 this.capacity(),
70 offset);
71 }
72
73 public LongBuffer asReadOnlyBuffer() {
74
75 return new ByteBufferAsLongBufferRB (bb,
76 this.markValue(),
77 this.position(),
78 this.limit(),
79 this.capacity(),
80 offset);
81
82
83
84 }
85
86
87
88 protected int ix(int i) {
89 return (i << 3) + offset;
90 }
91
92 public long get() {
93 return Bits.getLongB(bb, ix(nextGetIndex()));
94 }
95
96 public long get(int i) {
97 return Bits.getLongB(bb, ix(checkIndex(i)));
98 }
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102 public LongBuffer put(long x) {
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104 Bits.putLongB(bb, ix(nextPutIndex()), x);
105 return this;
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109 }
110
111 public LongBuffer put(int i, long x) {
112
113 Bits.putLongB(bb, ix(checkIndex(i)), x);
114 return this;
115
116
117
118 }
119
120 public LongBuffer compact() {
121
122 int pos = position();
123 int lim = limit();
124 assert (pos <= lim);
125 int rem = (pos <= lim ? lim - pos : 0);
126
127 ByteBuffer db = bb.duplicate();
128 db.limit(ix(lim));
129 db.position(ix(0));
130 ByteBuffer sb = db.slice();
131 sb.position(pos << 3);
132 sb.compact();
133 position(rem);
134 limit(capacity());
135 return this;
136
137
138
139 }
140
141 public boolean isDirect() {
142 return bb.isDirect();
143 }
144
145 public boolean isReadOnly() {
146 return false;
147 }
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189 public ByteOrder order() {
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191 return ByteOrder.BIG_ENDIAN;
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195
196 }
197
198 }
199 |
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