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/*
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* Copyright 2000-2014 JetBrains s.r.o.
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*
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* Licensed under the Apache License, Version 2.0 (the "License");
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* you may not use this file except in compliance with the License.
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* You may obtain a copy of the License at
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*
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* http://www.apache.org/licenses/LICENSE-2.0
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*
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* Unless required by applicable law or agreed to in writing, software
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* distributed under the License is distributed on an "AS IS" BASIS,
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* WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
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* See the License for the specific language governing permissions and
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* limitations under the License.
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*/
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package org.jetbrains.java.decompiler.main;
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import org.jetbrains.java.decompiler.main.rels.ClassWrapper;
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import org.jetbrains.java.decompiler.main.rels.MethodWrapper;
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import org.jetbrains.java.decompiler.modules.decompiler.exps.Exprent;
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import org.jetbrains.java.decompiler.modules.decompiler.exps.InvocationExprent;
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import org.jetbrains.java.decompiler.modules.decompiler.exps.VarExprent;
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import org.jetbrains.java.decompiler.modules.decompiler.stats.Statement;
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import org.jetbrains.java.decompiler.modules.decompiler.vars.VarVersionPaar;
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import org.jetbrains.java.decompiler.struct.StructClass;
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import org.jetbrains.java.decompiler.struct.StructField;
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import org.jetbrains.java.decompiler.struct.StructMethod;
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import org.jetbrains.java.decompiler.util.InterpreterUtil;
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public class EnumProcessor {
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public static void clearEnum(ClassWrapper wrapper) {
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StructClass cl = wrapper.getClassStruct();
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// hide values/valueOf methods and super() invocations
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for (MethodWrapper method : wrapper.getMethods()) {
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StructMethod mt = method.methodStruct;
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String name = mt.getName();
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String descriptor = mt.getDescriptor();
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if ("values".equals(name)) {
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if (descriptor.equals("()[L" + cl.qualifiedName + ";")) {
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wrapper.getHideMembers().add(InterpreterUtil.makeUniqueKey(name, descriptor));
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}
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}
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else if ("valueOf".equals(name)) {
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if (descriptor.equals("(Ljava/lang/String;)L" + cl.qualifiedName + ";")) {
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wrapper.getHideMembers().add(InterpreterUtil.makeUniqueKey(name, descriptor));
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}
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}
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else if ("<init>".equals(name)) {
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Statement firstData = findFirstData(method.root);
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if (firstData != null && !firstData.getExprents().isEmpty()) {
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Exprent exprent = firstData.getExprents().get(0);
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if (exprent.type == Exprent.EXPRENT_INVOCATION) {
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InvocationExprent invexpr = (InvocationExprent)exprent;
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if (isInvocationSuperConstructor(invexpr, method, wrapper)) {
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firstData.getExprents().remove(0);
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}
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}
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}
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}
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}
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// hide synthetic fields of enum and it's constants
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for (StructField fd : cl.getFields()) {
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String descriptor = fd.getDescriptor();
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if (fd.isSynthetic() && descriptor.equals("[L" + cl.qualifiedName + ";")) {
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wrapper.getHideMembers().add(InterpreterUtil.makeUniqueKey(fd.getName(), descriptor));
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}
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}
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}
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// FIXME: move to a util class (see also InitializerProcessor)
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private static Statement findFirstData(Statement stat) {
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if (stat.getExprents() != null) {
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return stat;
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}
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else {
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if (stat.isLabeled()) {
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return null;
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}
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switch (stat.type) {
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case Statement.TYPE_SEQUENCE:
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case Statement.TYPE_IF:
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case Statement.TYPE_ROOT:
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case Statement.TYPE_SWITCH:
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case Statement.TYPE_SYNCRONIZED:
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return findFirstData(stat.getFirst());
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default:
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return null;
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}
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}
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}
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// FIXME: move to util class (see also InitializerProcessor)
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private static boolean isInvocationSuperConstructor(InvocationExprent inv, MethodWrapper meth, ClassWrapper wrapper) {
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if (inv.getFunctype() == InvocationExprent.TYP_INIT) {
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if (inv.getInstance().type == Exprent.EXPRENT_VAR) {
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VarExprent instvar = (VarExprent)inv.getInstance();
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VarVersionPaar varpaar = new VarVersionPaar(instvar);
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String classname = meth.varproc.getThisvars().get(varpaar);
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if (classname != null) { // any this instance. TODO: Restrict to current class?
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if (!wrapper.getClassStruct().qualifiedName.equals(inv.getClassname())) {
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return true;
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}
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}
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}
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}
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return false;
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}
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}
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