Wed, 17 Jul 2013 14:19:25 +0100
8019340: varargs-related warnings are meaningless on signature-polymorphic methods such as MethodHandle.invokeExact
Summary: Disable certain varargs warnings when compiling polymorphic signature calls
Reviewed-by: jjg
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
23 * questions.
24 */
26 package com.sun.tools.javac.util;
28 import com.sun.tools.javac.code.Lint.LintCategory;
29 import com.sun.tools.javac.util.JCDiagnostic.DiagnosticPosition;
30 import java.util.EnumSet;
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 {
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);
48 public DiagnosticPosition pos() {
49 return pos;
50 }
52 public void warn(LintCategory lint) {
53 nonSilentLintSet.add(lint);
54 }
56 public void silentWarn(LintCategory lint) {
57 silentLintSet.add(lint);
58 }
60 public Warner(DiagnosticPosition pos) {
61 this.pos = pos;
62 }
64 public boolean hasSilentLint(LintCategory lint) {
65 return silentLintSet.contains(lint);
66 }
68 public boolean hasNonSilentLint(LintCategory lint) {
69 return nonSilentLintSet.contains(lint);
70 }
72 public boolean hasLint(LintCategory lint) {
73 return hasSilentLint(lint) ||
74 hasNonSilentLint(lint);
75 }
77 public void clear() {
78 nonSilentLintSet.clear();
79 silentLintSet.clear();
80 this.warned = false;
81 }
83 public Warner() {
84 this(null);
85 }
86 }