| /* |
| * Copyright (c) 2013, 2016, 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.HashMap; |
| import java.util.HashSet; |
| import java.util.List; |
| import java.util.Map; |
| import java.util.Set; |
| |
| import com.sun.source.util.JavacTask; |
| import com.sun.source.util.TaskEvent.Kind; |
| import com.sun.tools.javac.tree.JCTree.JCVariableDecl; |
| import com.sun.tools.javac.tree.TreeScanner; |
| |
| import static com.sun.tools.javac.code.Flags.ENUM; |
| import static com.sun.tools.javac.code.Flags.FINAL; |
| import static com.sun.tools.javac.code.Flags.STATIC; |
| import static com.sun.tools.javac.code.Flags.SYNTHETIC; |
| import static com.sun.tools.javac.code.Kinds.Kind.*; |
| |
| /**This analyzer guards against non-final static fields.*/ |
| public class MutableFieldsAnalyzer extends AbstractCodingRulesAnalyzer { |
| |
| public MutableFieldsAnalyzer(JavacTask task) { |
| super(task); |
| treeVisitor = new MutableFieldsVisitor(); |
| eventKind = Kind.ANALYZE; |
| } |
| |
| private boolean ignoreField(String className, String field) { |
| Set<String> fieldsToIgnore = classFieldsToIgnoreMap.get(className); |
| return (fieldsToIgnore) != null && fieldsToIgnore.contains(field); |
| } |
| |
| class MutableFieldsVisitor extends TreeScanner { |
| |
| @Override |
| public void visitVarDef(JCVariableDecl tree) { |
| boolean isJavacPack = tree.sym.outermostClass().fullname.toString() |
| .contains(packageToCheck); |
| if (isJavacPack && |
| (tree.sym.flags() & SYNTHETIC) == 0 && |
| tree.sym.owner.kind == TYP) { |
| if (!ignoreField(tree.sym.owner.flatName().toString(), |
| tree.getName().toString())) { |
| boolean enumClass = (tree.sym.owner.flags() & ENUM) != 0; |
| boolean nonFinalStaticEnumField = |
| (tree.sym.flags() & (ENUM | FINAL)) == 0; |
| boolean nonFinalStaticField = |
| (tree.sym.flags() & STATIC) != 0 && |
| (tree.sym.flags() & FINAL) == 0; |
| if (enumClass ? nonFinalStaticEnumField : nonFinalStaticField) { |
| messages.error(tree, "crules.err.var.must.be.final", tree); |
| } |
| } |
| } |
| super.visitVarDef(tree); |
| } |
| |
| } |
| |
| private static final String packageToCheck = "com.sun.tools.javac"; |
| |
| private static final Map<String, Set<String>> classFieldsToIgnoreMap = |
| new HashMap<>(); |
| |
| private static void ignoreFields(String className, String... fieldNames) { |
| classFieldsToIgnoreMap.put(className, new HashSet<>(Arrays.asList(fieldNames))); |
| }; |
| |
| static { |
| ignoreFields("com.sun.tools.javac.util.JCDiagnostic", "fragmentFormatter"); |
| ignoreFields("com.sun.tools.javac.util.JavacMessages", "defaultBundle", "defaultMessages"); |
| ignoreFields("com.sun.tools.javac.file.JRTIndex", "sharedInstance"); |
| ignoreFields("com.sun.tools.javac.main.JavaCompiler", "versionRB"); |
| ignoreFields("com.sun.tools.javac.code.Type", "moreInfo"); |
| ignoreFields("com.sun.tools.javac.util.SharedNameTable", "freelist"); |
| ignoreFields("com.sun.tools.javac.util.Log", "useRawMessages"); |
| ignoreFields("com.sun.tools.javac.util.JDK9Wrappers$ModuleFinder", |
| "moduleFinderClass", "ofMethod"); |
| ignoreFields("com.sun.tools.javac.util.JDK9Wrappers$Configuration", |
| "configurationClass", "resolveAndBindMethod"); |
| ignoreFields("com.sun.tools.javac.util.JDK9Wrappers$Layer", |
| "layerClass", "bootMethod", "defineModulesWithOneLoaderMethod", "configurationMethod"); |
| ignoreFields("com.sun.tools.javac.util.JDK9Wrappers$Module", |
| "addExportsMethod", "addUsesMethod", "getModuleMethod", "getUnnamedModuleMethod"); |
| ignoreFields("com.sun.tools.javac.util.JDK9Wrappers$ModuleDescriptor$Version", |
| "versionClass", "parseMethod"); |
| ignoreFields("com.sun.tools.javac.util.JDK9Wrappers$ServiceLoaderHelper", |
| "loadMethod"); |
| ignoreFields("com.sun.tools.javac.util.JDK9Wrappers$VMHelper", |
| "vmClass", "getRuntimeArgumentsMethod"); |
| ignoreFields("com.sun.tools.javac.util.JDK9Wrappers$JmodFile", |
| "jmodFileClass", "checkMagicMethod"); |
| } |
| |
| } |