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Java > Open Source Codes > org > jruby > common > RubyWarnings


1 /***** BEGIN LICENSE BLOCK *****
2  * Version: CPL 1.0/GPL 2.0/LGPL 2.1
3  *
4  * The contents of this file are subject to the Common Public
5  * License Version 1.0 (the "License"); you may not use this file
6  * except in compliance with the License. You may obtain a copy of
7  * the License at http://www.eclipse.org/legal/cpl-v10.html
8  *
9  * Software distributed under the License is distributed on an "AS
10  * IS" basis, WITHOUT WARRANTY OF ANY KIND, either express or
11  * implied. See the License for the specific language governing
12  * rights and limitations under the License.
13  *
14  * Copyright (C) 2004 Jan Arne Petersen <jpetersen@uni-bonn.de>
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16  * Alternatively, the contents of this file may be used under the terms of
17  * either of the GNU General Public License Version 2 or later (the "GPL"),
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28 package org.jruby.common;
29
30 import org.jruby.Ruby;
31 import org.jruby.lexer.yacc.ISourcePosition;
32 import org.jruby.runtime.builtin.IRubyObject;
33
34 /**
35  *
36  */
37 public class RubyWarnings implements IRubyWarnings {
38     private Ruby runtime;
39
40     public RubyWarnings(Ruby runtime) {
41         this.runtime = runtime;
42     }
43
44     public void warn(ISourcePosition position, String JavaDoc message) {
45         assert position != null;
46
47         if(runtime.getVerbose().isNil()) {
48             return;
49         }
50         
51         StringBuffer JavaDoc buffer = new StringBuffer JavaDoc(100);
52
53         buffer.append(position.getFile()).append(':').append(position.getEndLine()).append(' ');
54         buffer.append("warning: ").append(message).append('\n');
55         IRubyObject errorStream = runtime.getGlobalVariables().get("$stderr");
56         errorStream.callMethod(runtime.getCurrentContext(), "write", runtime.newString(buffer.toString()));
57     }
58
59     public boolean isVerbose() {
60         return runtime.getVerbose().isTrue();
61     }
62
63     public void warn(String JavaDoc message) {
64         warn(runtime.getCurrentContext().getPosition(), message);
65     }
66
67     public void warning(String JavaDoc message) {
68         warning(runtime.getCurrentContext().getPosition(), message);
69     }
70     
71     public void warning(ISourcePosition position, String JavaDoc message) {
72         if (isVerbose()) {
73             warn(position, message);
74         }
75     }
76 }
77
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