1 /* VMClassLoader.java -- Reference implementation of compiler interface
2 Copyright (C) 2004 Free Software Foundation
3
4 This file is part of GNU Classpath.
5
6 GNU Classpath is free software; you can redistribute it and/or modify
7 it under the terms of the GNU General Public License as published by
8 the Free Software Foundation; either version 2, or (at your option)
9 any later version.
10
11 GNU Classpath is distributed in the hope that it will be useful, but
12 WITHOUT ANY WARRANTY; without even the implied warranty of
13 MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
14 General Public License for more details.
15
16 You should have received a copy of the GNU General Public License
17 along with GNU Classpath; see the file COPYING. If not, write to the
18 Free Software Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA
19 02110-1301 USA.
20
21 Linking this library statically or dynamically with other modules is
22 making a combined work based on this library. Thus, the terms and
23 conditions of the GNU General Public License cover the whole
24 combination.
25
26 As a special exception, the copyright holders of this library give you
27 permission to link this library with independent modules to produce an
28 executable, regardless of the license terms of these independent
29 modules, and to copy and distribute the resulting executable under
30 terms of your choice, provided that you also meet, for each linked
31 independent module, the terms and conditions of the license of that
32 module. An independent module is a module which is not derived from
33 or based on this library. If you modify this library, you may extend
34 this exception to your version of the library, but you are not
35 obligated to do so. If you do not wish to do so, delete this
36 exception statement from your version. */
37
38 package java.lang;
39
40 /**
41 * This class is just a per-VM reflection of java.lang.Compiler.
42 * All methods are defined identically.
43 */
44 final class VMCompiler
45 {
46 /**
47 * Don't allow new `Compiler's to be made.
48 */
49 private VMCompiler()
50 {
51 }
52
53 /**
54 * Compile the class named by <code>oneClass</code>.
55 *
56 * @param oneClass the class to compile
57 * @return <code>false</code> if no compiler is available or
58 * compilation failed, <code>true</code> if compilation succeeded
59 * @throws NullPointerException if oneClass is null
60 */
61 public static boolean compileClass(Class oneClass)
62 {
63 // Never succeed.
64 return false;
65 }
66
67 /**
68 * Compile the classes whose name matches <code>classNames</code>.
69 *
70 * @param classNames the name of classes to compile
71 * @return <code>false</code> if no compiler is available or
72 * compilation failed, <code>true</code> if compilation succeeded
73 * @throws NullPointerException if classNames is null
74 */
75 public static boolean compileClasses(String classNames)
76 {
77 // Note the incredibly lame interface. Always fail.
78 return false;
79 }
80
81 /**
82 * This method examines the argument and performs an operation
83 * according to the compilers documentation. No specific operation
84 * is required.
85 *
86 * @param arg a compiler-specific argument
87 * @return a compiler-specific value, including null
88 * @throws NullPointerException if the compiler doesn't like a null arg
89 */
90 public static Object command(Object arg)
91 {
92 // Our implementation defines this to a no-op.
93 return null;
94 }
95
96 /**
97 * Calling <code>Compiler.enable()</code> will cause the compiler
98 * to resume operation if it was previously disabled; provided that a
99 * compiler even exists.
100 */
101 public static void enable()
102 {
103 }
104
105 /**
106 * Calling <code>Compiler.disable()</code> will cause the compiler
107 * to be suspended; provided that a compiler even exists.
108 */
109 public static void disable()
110 {
111 }
112 }
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