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1
7
8 package java.nio;
9
10
11
13 class StringCharBuffer extends CharBuffer 
15 {
16 CharSequence str;
17
18 StringCharBuffer(CharSequence s, int start, int end) { super(-1, start, end, s.length());
20 int n = s.length();
21 if ((start < 0) || (start > n) || (end < start) || (end > n))
22 throw new IndexOutOfBoundsException ();
23 str = s;
24 }
25
26 public CharBuffer slice() {
27 return new StringCharBuffer (str, position(), limit());
28 }
29
30
31 private StringCharBuffer(CharSequence s, int mark,
32 int pos, int limit, int cap)
33 {
34 super(mark, pos, limit, cap);
35 str = s;
36 }
37
38 public CharBuffer duplicate() {
39 return new StringCharBuffer (str, markValue(),
40 position(), limit(), capacity());
41 }
42
43 public CharBuffer asReadOnlyBuffer() {
44 return duplicate();
45 }
46
47 public final char get() {
48 return str.charAt(nextGetIndex());
49 }
50
51 public final char get(int index) {
52 return str.charAt(checkIndex(index));
53 }
54
55
57 public final CharBuffer put(char c) {
58 throw new ReadOnlyBufferException ();
59 }
60
61 public final CharBuffer put(int index, char c) {
62 throw new ReadOnlyBufferException ();
63 }
64
65 public final CharBuffer compact() {
66 throw new ReadOnlyBufferException ();
67 }
68
69 public final boolean isReadOnly() {
70 return true;
71 }
72
73 final String toString(int start, int end) {
74 return str.toString().substring(start, end);
75 }
76
77 public final CharSequence subSequence(int start, int end) {
78 try {
79 int pos = position();
80 return new StringCharBuffer (str,
81 pos + checkIndex(start, pos),
82 pos + checkIndex(end, pos));
83 } catch (IllegalArgumentException x) {
84 throw new IndexOutOfBoundsException ();
85 }
86 }
87
88 public boolean isDirect() {
89 return false;
90 }
91
92 public ByteOrder order() {
93 return ByteOrder.nativeOrder();
94 }
95
96 }
97 |
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