| /* |
| * Copyright (c) 2017, Oracle and/or its affiliates. All rights reserved. |
| * DO NOT ALTER OR REMOVE COPYRIGHT NOTICES OR THIS FILE HEADER. |
| * |
| * This code is free software; you can redistribute it and/or modify it |
| * under the terms of the GNU General Public License version 2 only, as |
| * published by the Free Software Foundation. Oracle designates this |
| * particular file as subject to the "Classpath" exception as provided |
| * by Oracle in the LICENSE file that accompanied this code. |
| * |
| * This code is distributed in the hope that it will be useful, but WITHOUT |
| * ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or |
| * FITNESS FOR A PARTICULAR PURPOSE. See the GNU General Public License |
| * version 2 for more details (a copy is included in the LICENSE file that |
| * accompanied this code). |
| * |
| * You should have received a copy of the GNU General Public License version |
| * 2 along with this work; if not, write to the Free Software Foundation, |
| * Inc., 51 Franklin St, Fifth Floor, Boston, MA 02110-1301 USA. |
| * |
| * Please contact Oracle, 500 Oracle Parkway, Redwood Shores, CA 94065 USA |
| * or visit www.oracle.com if you need additional information or have any |
| * questions. |
| */ |
| |
| package crules; |
| |
| import java.util.Arrays; |
| import java.util.HashSet; |
| import java.util.Set; |
| |
| import com.sun.source.util.JavacTask; |
| import com.sun.source.util.TaskEvent.Kind; |
| import com.sun.tools.javac.code.Kinds; |
| import com.sun.tools.javac.code.Symbol; |
| import com.sun.tools.javac.code.Symbol.MethodSymbol; |
| import com.sun.tools.javac.code.Type; |
| import com.sun.tools.javac.tree.JCTree.JCClassDecl; |
| import com.sun.tools.javac.tree.JCTree.JCExpression; |
| import com.sun.tools.javac.tree.JCTree.JCMethodInvocation; |
| import com.sun.tools.javac.tree.JCTree.Tag; |
| import com.sun.tools.javac.tree.TreeInfo; |
| import com.sun.tools.javac.tree.TreeScanner; |
| import com.sun.tools.javac.util.AbstractLog; |
| import com.sun.tools.javac.util.JCDiagnostic; |
| |
| /**This analyzer guards against legacy Log.error/warning/note methods that don't use the typed keys.*/ |
| public class LegacyLogMethodAnalyzer extends AbstractCodingRulesAnalyzer { |
| |
| public LegacyLogMethodAnalyzer(JavacTask task) { |
| super(task); |
| treeVisitor = new LegacyLogMethodVisitor(); |
| eventKind = Kind.ANALYZE; |
| } |
| |
| private static final Set<String> LEGACY_METHOD_NAMES = new HashSet<>( |
| Arrays.asList("error", "mandatoryWarning", "warning", "mandatoryNote", "note", "fragment")); |
| |
| class LegacyLogMethodVisitor extends TreeScanner { |
| |
| @Override |
| public void visitClassDef(JCClassDecl tree) { |
| if (!tree.sym.packge().fullname.toString().startsWith("com.sun.tools.javac.")) |
| return ; |
| super.visitClassDef(tree); |
| } |
| |
| @Override |
| public void visitApply(JCMethodInvocation tree) { |
| checkLegacyLogMethod(tree); |
| super.visitApply(tree); |
| } |
| |
| void checkLegacyLogMethod(JCMethodInvocation tree) { |
| Symbol method = TreeInfo.symbolFor(tree); |
| if (method == null || |
| method.kind != Kinds.Kind.MTH || |
| !typeToCheck(method.owner.type) || |
| !LEGACY_METHOD_NAMES.contains(method.name.toString()) || |
| !((MethodSymbol) method).isVarArgs() || |
| method.type.getParameterTypes().size() < 2) { |
| return ; |
| } |
| JCExpression key = tree.args.get(method.type.getParameterTypes().size() - 2); |
| if (key.hasTag(Tag.LITERAL)) { |
| messages.error(tree, "crules.use.of.legacy.log.method", tree); |
| } |
| } |
| |
| boolean typeToCheck(Type type) { |
| Symbol abstractLog = elements.getTypeElement(AbstractLog.class.getName()); |
| Symbol diagnosticFactory = elements.getTypeElement(JCDiagnostic.Factory.class.getName().replace('$', '.')); |
| return types.isSubtype(type, abstractLog.type) || |
| types.isSubtype(type, diagnosticFactory.type); |
| } |
| } |
| } |