01: /***
02: * Retrotranslator: a Java bytecode transformer that translates Java classes
03: * compiled with JDK 5.0 into classes that can be run on JVM 1.4.
04: *
05: * Copyright (c) 2005 - 2008 Taras Puchko
06: * All rights reserved.
07: *
08: * Redistribution and use in source and binary forms, with or without
09: * modification, are permitted provided that the following conditions
10: * are met:
11: * 1. Redistributions of source code must retain the above copyright
12: * notice, this list of conditions and the following disclaimer.
13: * 2. Redistributions in binary form must reproduce the above copyright
14: * notice, this list of conditions and the following disclaimer in the
15: * documentation and/or other materials provided with the distribution.
16: * 3. Neither the name of the copyright holders nor the names of its
17: * contributors may be used to endorse or promote products derived from
18: * this software without specific prior written permission.
19: *
20: * THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS "AS IS"
21: * AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
22: * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
23: * ARE DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT OWNER OR CONTRIBUTORS BE
24: * LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR
25: * CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF
26: * SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS
27: * INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN
28: * CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE)
29: * ARISING IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF
30: * THE POSSIBILITY OF SUCH DAMAGE.
31: */package net.sf.retrotranslator.runtime.java.lang;
32:
33: import java.io.*;
34: import java.nio.CharBuffer;
35: import net.sf.retrotranslator.runtime.java.io._Reader;
36: import net.sf.retrotranslator.runtime.java.nio._CharBuffer;
37:
38: /**
39: * @author Taras Puchko
40: */
41: public class _Readable {
42:
43: public static boolean executeInstanceOfInstruction(Object object) {
44: return object instanceof Reader || object instanceof CharBuffer
45: || object instanceof Readable_;
46: }
47:
48: public static Object executeCheckCastInstruction(Object object) {
49: if (object instanceof Reader) {
50: return (Reader) object;
51: }
52: if (object instanceof CharBuffer) {
53: return (CharBuffer) object;
54: }
55: return (Readable_) object;
56: }
57:
58: public static int read(Object object, CharBuffer cb)
59: throws IOException {
60: if (object instanceof Reader) {
61: return _Reader.read((Reader) object, cb);
62: }
63: if (object instanceof CharBuffer) {
64: return _CharBuffer.read((CharBuffer) object, cb);
65: }
66: return ((Readable_) object).read(cb);
67: }
68:
69: }
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