Repository navigation
Expand file tree
/
Copy pathProgramWarning.java
More file actions
executable file
·85 lines (77 loc) · 2.95 KB
/
Copy pathProgramWarning.java
File metadata and controls
executable file
·85 lines (77 loc) · 2.95 KB
1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
16
17
18
19
20
21
22
23
24
25
26
27
28
29
30
31
32
33
34
35
36
37
38
39
40
41
42
43
44
45
46
47
48
49
50
51
52
53
54
55
56
57
58
59
60
61
62
63
64
65
66
67
68
69
70
71
72
73
74
75
76
77
78
79
80
81
82
83
84
85
/*
* Copyright (c) 2007 Sun Microsystems, Inc. All rights reserved.
*
* Sun Microsystems, Inc. has intellectual property rights relating to technology embodied in the product
* that is described in this document. In particular, and without limitation, these intellectual property
* rights may include one or more of the U.S. patents listed at http://www.sun.com/patents and one or
* more additional patents or pending patent applications in the U.S. and in other countries.
*
* U.S. Government Rights - Commercial software. Government users are subject to the Sun
* Microsystems, Inc. standard license agreement and applicable provisions of the FAR and its
* supplements.
*
* Use is subject to license terms. Sun, Sun Microsystems, the Sun logo, Java and Solaris are trademarks or
* registered trademarks of Sun Microsystems, Inc. in the U.S. and other countries. All SPARC trademarks
* are used under license and are trademarks or registered trademarks of SPARC International, Inc. in the
* U.S. and other countries.
*
* UNIX is a registered trademark in the U.S. and other countries, exclusively licensed through X/Open
* Company, Ltd.
*/
package com.sun.max.program;
/**
* A collection of static methods for reporting a warning when an unexpected, non-fatal condition is encountered.
*
* @author Bernd Mathiske
* @author Doug Simon
*/
public final class ProgramWarning {
/**
* Implemented by a client that can {@linkplain ProgramWarning#setHandler(Handler) register}
* itself to handle program warnings instead of having them printed to {@link System#err}.
*/
public static interface Handler {
/**
* Handles display a given warning message.
*
* @param message a warning message
*/
void handle(String message);
}
/**
* Registers a handler to which warnings are redirected. Any previously registered handler
* is overwritten and discarded.
*
* @param h if non-null, this object's {@link Handler#handle(String)} method is messaged instead of
* printing the warning to {@link System#err} a ProgramError.
*/
public static void setHandler(Handler h) {
handler = h;
}
private static Handler handler;
private ProgramWarning() {
}
/**
* Prints a given warning message.
*
* @param warning the warning message to print
*/
public static void message(String warning) {
if (handler != null) {
handler.handle(warning);
} else {
System.err.println("WARNING: " + warning);
}
}
/**
* Checks a given condition and if it's {@code false}, the appropriate warning message is printed.
*
* @param condition a condition to test
* @param message the warning message to be printed if {@code condition == false}
*/
public static void check(boolean condition, String warning) {
if (!condition) {
message(warning);
}
}
}