1 /*
2  * Copyright (c) 2003, 2010, Oracle and/or its affiliates. All rights reserved.
3  * DO NOT ALTER OR REMOVE COPYRIGHT NOTICES OR THIS FILE HEADER.
4  *
5  * This code is free software; you can redistribute it and/or modify it
6  * under the terms of the GNU General Public License version 2 only, as
7  * published by the Free Software Foundation.  Oracle designates this
8  * particular file as subject to the "Classpath" exception as provided
9  * by Oracle in the LICENSE file that accompanied this code.
10  *
11  * This code is distributed in the hope that it will be useful, but WITHOUT
12  * ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or
13  * FITNESS FOR A PARTICULAR PURPOSE.  See the GNU General Public License
14  * version 2 for more details (a copy is included in the LICENSE file that
15  * accompanied this code).
16  *
17  * You should have received a copy of the GNU General Public License version
18  * 2 along with this work; if not, write to the Free Software Foundation,
19  * Inc., 51 Franklin St, Fifth Floor, Boston, MA 02110-1301 USA.
20  *
21  * Please contact Oracle, 500 Oracle Parkway, Redwood Shores, CA 94065 USA
22  * or visit www.oracle.com if you need additional information or have any
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24  */
25 
26 package com.sun.tools.javac.util;
27 
28 import com.sun.tools.javac.code.Lint.LintCategory;
29 import com.sun.tools.javac.util.JCDiagnostic.DiagnosticPosition;
30 import java.util.EnumSet;
31 
32 /**
33  * An interface to support optional warnings, needed for support of
34  * unchecked conversions and unchecked casts.
35  *
36  * <p><b>This is NOT part of any supported API.
37  * If you write code that depends on this, you do so at your own risk.
38  * This code and its internal interfaces are subject to change or
39  * deletion without notice.</b>
40  */
41 public class Warner {
42 
43     private DiagnosticPosition pos = null;
44     protected boolean warned = false;
45     private EnumSet<LintCategory> nonSilentLintSet = EnumSet.noneOf(LintCategory.class);
46     private EnumSet<LintCategory> silentLintSet = EnumSet.noneOf(LintCategory.class);
47 
pos()48     public DiagnosticPosition pos() {
49         return pos;
50     }
51 
warn(LintCategory lint)52     public void warn(LintCategory lint) {
53         nonSilentLintSet.add(lint);
54     }
55 
silentWarn(LintCategory lint)56     public void silentWarn(LintCategory lint) {
57         silentLintSet.add(lint);
58     }
59 
Warner(DiagnosticPosition pos)60     public Warner(DiagnosticPosition pos) {
61         this.pos = pos;
62     }
63 
hasSilentLint(LintCategory lint)64     public boolean hasSilentLint(LintCategory lint) {
65         return silentLintSet.contains(lint);
66     }
67 
hasNonSilentLint(LintCategory lint)68     public boolean hasNonSilentLint(LintCategory lint) {
69         return nonSilentLintSet.contains(lint);
70     }
71 
hasLint(LintCategory lint)72     public boolean hasLint(LintCategory lint) {
73         return hasSilentLint(lint) ||
74                 hasNonSilentLint(lint);
75     }
76 
clear()77     public void clear() {
78         nonSilentLintSet.clear();
79         silentLintSet.clear();
80         this.warned = false;
81     }
82 
Warner()83     public Warner() {
84         this(null);
85     }
86 }
87