duke@1: /*
ohair@798:  * Copyright (c) 2003, 2010, Oracle and/or its affiliates. All rights reserved.
duke@1:  * DO NOT ALTER OR REMOVE COPYRIGHT NOTICES OR THIS FILE HEADER.
duke@1:  *
duke@1:  * This code is free software; you can redistribute it and/or modify it
duke@1:  * under the terms of the GNU General Public License version 2 only, as
ohair@554:  * published by the Free Software Foundation.  Oracle designates this
duke@1:  * particular file as subject to the "Classpath" exception as provided
ohair@554:  * by Oracle in the LICENSE file that accompanied this code.
duke@1:  *
duke@1:  * This code is distributed in the hope that it will be useful, but WITHOUT
duke@1:  * ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or
duke@1:  * FITNESS FOR A PARTICULAR PURPOSE.  See the GNU General Public License
duke@1:  * version 2 for more details (a copy is included in the LICENSE file that
duke@1:  * accompanied this code).
duke@1:  *
duke@1:  * You should have received a copy of the GNU General Public License version
duke@1:  * 2 along with this work; if not, write to the Free Software Foundation,
duke@1:  * Inc., 51 Franklin St, Fifth Floor, Boston, MA 02110-1301 USA.
duke@1:  *
ohair@554:  * Please contact Oracle, 500 Oracle Parkway, Redwood Shores, CA 94065 USA
ohair@554:  * or visit www.oracle.com if you need additional information or have any
ohair@554:  * questions.
duke@1:  */
duke@1: 
duke@1: package com.sun.tools.javac.util;
duke@1: 
mcimadamore@795: import com.sun.tools.javac.code.Lint.LintCategory;
duke@1: import com.sun.tools.javac.util.JCDiagnostic.DiagnosticPosition;
mcimadamore@795: import java.util.EnumSet;
duke@1: 
duke@1: /**
duke@1:  * An interface to support optional warnings, needed for support of
duke@1:  * unchecked conversions and unchecked casts.
duke@1:  *
jjg@581:  * <p><b>This is NOT part of any supported API.
jjg@333:  * If you write code that depends on this, you do so at your own risk.
jjg@333:  * This code and its internal interfaces are subject to change or
jjg@333:  * deletion without notice.</b>
duke@1:  */
duke@1: public class Warner {
duke@1:     public static final Warner noWarnings = new Warner();
duke@1: 
duke@1:     private DiagnosticPosition pos = null;
mcimadamore@795:     protected boolean warned = false;
mcimadamore@795:     private EnumSet<LintCategory> nonSilentLintSet = EnumSet.noneOf(LintCategory.class);
mcimadamore@795:     private EnumSet<LintCategory> silentLintSet = EnumSet.noneOf(LintCategory.class);
duke@1: 
duke@1:     public DiagnosticPosition pos() {
duke@1:         return pos;
duke@1:     }
duke@1: 
mcimadamore@795:     public void warn(LintCategory lint) {
mcimadamore@795:         nonSilentLintSet.add(lint);
duke@1:     }
mcimadamore@795: 
mcimadamore@795:     public void silentWarn(LintCategory lint) {
mcimadamore@795:         silentLintSet.add(lint);
duke@1:     }
duke@1: 
duke@1:     public Warner(DiagnosticPosition pos) {
duke@1:         this.pos = pos;
duke@1:     }
duke@1: 
mcimadamore@795:     public boolean hasSilentLint(LintCategory lint) {
mcimadamore@795:         return silentLintSet.contains(lint);
mcimadamore@795:     }
mcimadamore@795: 
mcimadamore@795:     public boolean hasNonSilentLint(LintCategory lint) {
mcimadamore@795:         return nonSilentLintSet.contains(lint);
mcimadamore@795:     }
mcimadamore@795: 
mcimadamore@795:     public boolean hasLint(LintCategory lint) {
mcimadamore@795:         return hasSilentLint(lint) ||
mcimadamore@795:                 hasNonSilentLint(lint);
mcimadamore@795:     }
mcimadamore@795: 
mcimadamore@795:     public void clear() {
mcimadamore@795:         nonSilentLintSet.clear();
mcimadamore@795:         silentLintSet.clear();
mcimadamore@795:         this.warned = false;
mcimadamore@795:     }
mcimadamore@795: 
duke@1:     public Warner() {
duke@1:         this(null);
duke@1:     }
duke@1: }