1060 lines
40 KiB
Java
1060 lines
40 KiB
Java
/*
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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.code.CodeConstants;
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import org.jetbrains.java.decompiler.main.ClassesProcessor.ClassNode;
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import org.jetbrains.java.decompiler.main.collectors.BytecodeMappingTracer;
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import org.jetbrains.java.decompiler.main.extern.IFernflowerLogger;
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import org.jetbrains.java.decompiler.main.extern.IFernflowerPreferences;
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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.ExprProcessor;
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import org.jetbrains.java.decompiler.modules.decompiler.exps.AnnotationExprent;
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import org.jetbrains.java.decompiler.modules.decompiler.exps.ConstExprent;
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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.NewExprent;
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import org.jetbrains.java.decompiler.modules.decompiler.stats.RootStatement;
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import org.jetbrains.java.decompiler.modules.decompiler.vars.VarTypeProcessor;
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import org.jetbrains.java.decompiler.modules.decompiler.vars.VarVersionPair;
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import org.jetbrains.java.decompiler.modules.renamer.PoolInterceptor;
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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.StructMember;
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import org.jetbrains.java.decompiler.struct.StructMethod;
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import org.jetbrains.java.decompiler.struct.attr.*;
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import org.jetbrains.java.decompiler.struct.consts.PrimitiveConstant;
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import org.jetbrains.java.decompiler.struct.gen.FieldDescriptor;
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import org.jetbrains.java.decompiler.struct.gen.MethodDescriptor;
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import org.jetbrains.java.decompiler.struct.gen.VarType;
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import org.jetbrains.java.decompiler.struct.gen.generics.*;
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import org.jetbrains.java.decompiler.util.InterpreterUtil;
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import java.util.*;
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public class ClassWriter {
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private ClassReference14Processor ref14processor;
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private PoolInterceptor interceptor;
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public ClassWriter() {
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ref14processor = new ClassReference14Processor();
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interceptor = DecompilerContext.getPoolInterceptor();
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}
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private void invokeProcessors(ClassNode node) {
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ClassWrapper wrapper = node.wrapper;
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StructClass cl = wrapper.getClassStruct();
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InitializerProcessor.extractInitializers(wrapper);
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if (node.type == ClassNode.CLASS_ROOT && DecompilerContext.getOption(IFernflowerPreferences.DECOMPILE_CLASS_1_4)) {
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ref14processor.processClassReferences(node);
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}
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if (cl.hasModifier(CodeConstants.ACC_ENUM) && DecompilerContext.getOption(IFernflowerPreferences.DECOMPILE_ENUM)) {
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EnumProcessor.clearEnum(wrapper);
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}
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if (DecompilerContext.getOption(IFernflowerPreferences.DECOMPILE_ASSERTIONS)) {
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AssertProcessor.buildAssertions(node);
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}
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}
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public void classLambdaToJava(ClassNode node, TextBuffer buffer, Exprent method_object, int indent) {
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// get the class node with the content method
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ClassNode classNode = node;
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while (classNode != null && classNode.type == ClassNode.CLASS_LAMBDA) {
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classNode = classNode.parent;
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}
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if (classNode == null) {
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return;
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}
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boolean lambdaToAnonymous = DecompilerContext.getOption(IFernflowerPreferences.LAMBDA_TO_ANONYMOUS_CLASS);
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ClassNode outerNode = (ClassNode)DecompilerContext.getProperty(DecompilerContext.CURRENT_CLASS_NODE);
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DecompilerContext.setProperty(DecompilerContext.CURRENT_CLASS_NODE, node);
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BytecodeMappingTracer tracer = new BytecodeMappingTracer();
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try {
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ClassWrapper wrapper = classNode.wrapper;
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StructClass cl = wrapper.getClassStruct();
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DecompilerContext.getLogger().startWriteClass(node.simpleName);
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if (node.lambdaInformation.is_method_reference) {
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if (!node.lambdaInformation.is_content_method_static && method_object != null) {
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// reference to a virtual method
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buffer.append(method_object.toJava(indent, tracer));
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}
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else {
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// reference to a static method
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buffer.append(ExprProcessor.getCastTypeName(new VarType(node.lambdaInformation.content_class_name, false)));
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}
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buffer.append("::");
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buffer.append(node.lambdaInformation.content_method_name);
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}
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else {
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// lambda method
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StructMethod mt = cl.getMethod(node.lambdaInformation.content_method_key);
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MethodWrapper methodWrapper = wrapper.getMethodWrapper(mt.getName(), mt.getDescriptor());
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MethodDescriptor md_content = MethodDescriptor.parseDescriptor(node.lambdaInformation.content_method_descriptor);
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MethodDescriptor md_lambda = MethodDescriptor.parseDescriptor(node.lambdaInformation.method_descriptor);
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if (!lambdaToAnonymous) {
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buffer.append('(');
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boolean firstParameter = true;
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int index = node.lambdaInformation.is_content_method_static ? 0 : 1;
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int start_index = md_content.params.length - md_lambda.params.length;
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for (int i = 0; i < md_content.params.length; i++) {
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if (i >= start_index) {
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if (!firstParameter) {
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buffer.append(", ");
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}
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String parameterName = methodWrapper.varproc.getVarName(new VarVersionPair(index, 0));
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buffer.append(parameterName == null ? "param" + index : parameterName); // null iff decompiled with errors
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firstParameter = false;
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}
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index += md_content.params[i].stackSize;
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}
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buffer.append(") ->");
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}
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buffer.append(" {").appendLineSeparator();
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methodLambdaToJava(node, classNode, mt, buffer, indent + 1, !lambdaToAnonymous, tracer);
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buffer.appendIndent(indent).append("}");
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}
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}
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finally {
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DecompilerContext.setProperty(DecompilerContext.CURRENT_CLASS_NODE, outerNode);
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}
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DecompilerContext.getLogger().endWriteClass();
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}
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public void classToJava(ClassNode node, TextBuffer buffer, int indent, BytecodeMappingTracer tracer) {
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ClassNode outerNode = (ClassNode)DecompilerContext.getProperty(DecompilerContext.CURRENT_CLASS_NODE);
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DecompilerContext.setProperty(DecompilerContext.CURRENT_CLASS_NODE, node);
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int startLine = tracer != null ? tracer.getCurrentSourceLine() : 0;
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BytecodeMappingTracer dummy_tracer = new BytecodeMappingTracer(startLine);
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try {
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// last minute processing
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invokeProcessors(node);
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ClassWrapper wrapper = node.wrapper;
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StructClass cl = wrapper.getClassStruct();
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DecompilerContext.getLogger().startWriteClass(cl.qualifiedName);
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// write class definition
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int start_class_def = buffer.length();
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writeClassDefinition(node, buffer, indent);
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// // count lines in class definition the easiest way
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// startLine = buffer.substring(start_class_def).toString().split(lineSeparator, -1).length - 1;
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boolean hasContent = false;
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// fields
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boolean enumFields = false;
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dummy_tracer.incrementCurrentSourceLine(buffer.countLines(start_class_def));
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for (StructField fd : cl.getFields()) {
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boolean hide = fd.isSynthetic() && DecompilerContext.getOption(IFernflowerPreferences.REMOVE_SYNTHETIC) ||
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wrapper.getHiddenMembers().contains(InterpreterUtil.makeUniqueKey(fd.getName(), fd.getDescriptor()));
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if (hide) continue;
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boolean isEnum = fd.hasModifier(CodeConstants.ACC_ENUM) && DecompilerContext.getOption(IFernflowerPreferences.DECOMPILE_ENUM);
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if (isEnum) {
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if (enumFields) {
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buffer.append(',').appendLineSeparator();
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dummy_tracer.incrementCurrentSourceLine();
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}
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enumFields = true;
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}
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else if (enumFields) {
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buffer.append(';');
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buffer.appendLineSeparator();
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buffer.appendLineSeparator();
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dummy_tracer.incrementCurrentSourceLine(2);
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enumFields = false;
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}
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fieldToJava(wrapper, cl, fd, buffer, indent + 1, dummy_tracer); // FIXME: insert real tracer
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hasContent = true;
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}
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if (enumFields) {
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buffer.append(';').appendLineSeparator();
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dummy_tracer.incrementCurrentSourceLine();
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}
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// FIXME: fields don't matter at the moment
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startLine += buffer.countLines(start_class_def);
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// methods
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for (StructMethod mt : cl.getMethods()) {
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boolean hide = mt.isSynthetic() && DecompilerContext.getOption(IFernflowerPreferences.REMOVE_SYNTHETIC) ||
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mt.hasModifier(CodeConstants.ACC_BRIDGE) && DecompilerContext.getOption(IFernflowerPreferences.REMOVE_BRIDGE) ||
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wrapper.getHiddenMembers().contains(InterpreterUtil.makeUniqueKey(mt.getName(), mt.getDescriptor()));
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if (hide) continue;
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int position = buffer.length();
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int storedLine = startLine;
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if (hasContent) {
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buffer.appendLineSeparator();
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startLine++;
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}
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BytecodeMappingTracer method_tracer = new BytecodeMappingTracer(startLine);
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boolean methodSkipped = !methodToJava(node, mt, buffer, indent + 1, method_tracer);
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if (!methodSkipped) {
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hasContent = true;
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DecompilerContext.getBytecodeSourceMapper().addTracer(cl.qualifiedName,
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InterpreterUtil.makeUniqueKey(mt.getName(), mt.getDescriptor()), method_tracer);
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startLine = method_tracer.getCurrentSourceLine();
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}
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else {
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buffer.setLength(position);
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startLine = storedLine;
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}
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}
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// member classes
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for (ClassNode inner : node.nested) {
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if (inner.type == ClassNode.CLASS_MEMBER) {
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StructClass innerCl = inner.classStruct;
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boolean isSynthetic = (inner.access & CodeConstants.ACC_SYNTHETIC) != 0 || innerCl.isSynthetic() || inner.namelessConstructorStub;
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boolean hide = isSynthetic && DecompilerContext.getOption(IFernflowerPreferences.REMOVE_SYNTHETIC) ||
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wrapper.getHiddenMembers().contains(innerCl.qualifiedName);
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if (hide) continue;
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if (hasContent) {
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buffer.appendLineSeparator();
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startLine++;
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}
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BytecodeMappingTracer class_tracer = new BytecodeMappingTracer(startLine);
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classToJava(inner, buffer, indent + 1, class_tracer);
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startLine = buffer.countLines();
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hasContent = true;
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}
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}
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buffer.appendIndent(indent).append('}');
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if (node.type != ClassNode.CLASS_ANONYMOUS) {
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buffer.appendLineSeparator();
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}
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}
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finally {
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DecompilerContext.setProperty(DecompilerContext.CURRENT_CLASS_NODE, outerNode);
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}
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DecompilerContext.getLogger().endWriteClass();
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}
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private void writeClassDefinition(ClassNode node, TextBuffer buffer, int indent) {
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if (node.type == ClassNode.CLASS_ANONYMOUS) {
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buffer.append(" {").appendLineSeparator();
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return;
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}
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ClassWrapper wrapper = node.wrapper;
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StructClass cl = wrapper.getClassStruct();
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int flags = node.type == ClassNode.CLASS_ROOT ? cl.getAccessFlags() : node.access;
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boolean isDeprecated = cl.getAttributes().containsKey("Deprecated");
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boolean isSynthetic = (flags & CodeConstants.ACC_SYNTHETIC) != 0 || cl.getAttributes().containsKey("Synthetic");
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boolean isEnum = DecompilerContext.getOption(IFernflowerPreferences.DECOMPILE_ENUM) && (flags & CodeConstants.ACC_ENUM) != 0;
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boolean isInterface = (flags & CodeConstants.ACC_INTERFACE) != 0;
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boolean isAnnotation = (flags & CodeConstants.ACC_ANNOTATION) != 0;
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if (isDeprecated) {
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appendDeprecation(buffer, indent);
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}
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if (interceptor != null) {
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String oldName = interceptor.getOldName(cl.qualifiedName);
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appendRenameComment(buffer, oldName, MType.CLASS, indent);
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}
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if (isSynthetic) {
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appendComment(buffer, "synthetic class", indent);
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}
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appendAnnotations(buffer, cl, indent);
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buffer.appendIndent(indent);
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if (isEnum) {
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// remove abstract and final flags (JLS 8.9 Enums)
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flags &= ~CodeConstants.ACC_ABSTRACT;
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flags &= ~CodeConstants.ACC_FINAL;
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}
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appendModifiers(buffer, flags, CLASS_ALLOWED, isInterface, CLASS_EXCLUDED);
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if (isEnum) {
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buffer.append("enum ");
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}
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else if (isInterface) {
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if (isAnnotation) {
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buffer.append('@');
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}
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buffer.append("interface ");
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}
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else {
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buffer.append("class ");
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}
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GenericClassDescriptor descriptor = null;
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if (DecompilerContext.getOption(IFernflowerPreferences.DECOMPILE_GENERIC_SIGNATURES)) {
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StructGenericSignatureAttribute attr = (StructGenericSignatureAttribute)cl.getAttributes().getWithKey("Signature");
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if (attr != null) {
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descriptor = GenericMain.parseClassSignature(attr.getSignature());
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}
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}
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buffer.append(node.simpleName);
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if (descriptor != null && !descriptor.fparameters.isEmpty()) {
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appendTypeParameters(buffer, descriptor.fparameters, descriptor.fbounds);
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}
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buffer.append(' ');
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if (!isEnum && !isInterface && cl.superClass != null) {
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VarType supertype = new VarType(cl.superClass.getString(), true);
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if (!VarType.VARTYPE_OBJECT.equals(supertype)) {
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buffer.append("extends ");
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if (descriptor != null) {
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buffer.append(GenericMain.getGenericCastTypeName(descriptor.superclass));
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}
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else {
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buffer.append(ExprProcessor.getCastTypeName(supertype));
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}
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buffer.append(' ');
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}
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}
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if (!isAnnotation) {
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int[] interfaces = cl.getInterfaces();
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if (interfaces.length > 0) {
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buffer.append(isInterface ? "extends " : "implements ");
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for (int i = 0; i < interfaces.length; i++) {
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if (i > 0) {
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buffer.append(", ");
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}
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if (descriptor != null) {
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buffer.append(GenericMain.getGenericCastTypeName(descriptor.superinterfaces.get(i)));
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}
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else {
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buffer.append(ExprProcessor.getCastTypeName(new VarType(cl.getInterface(i), true)));
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}
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}
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buffer.append(' ');
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}
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}
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buffer.append('{').appendLineSeparator();
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}
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private void fieldToJava(ClassWrapper wrapper, StructClass cl, StructField fd, TextBuffer buffer, int indent, BytecodeMappingTracer tracer) {
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int start = buffer.length();
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boolean isInterface = cl.hasModifier(CodeConstants.ACC_INTERFACE);
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boolean isDeprecated = fd.getAttributes().containsKey("Deprecated");
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boolean isEnum = fd.hasModifier(CodeConstants.ACC_ENUM) && DecompilerContext.getOption(IFernflowerPreferences.DECOMPILE_ENUM);
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if (isDeprecated) {
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appendDeprecation(buffer, indent);
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}
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if (interceptor != null) {
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String oldName = interceptor.getOldName(cl.qualifiedName + " " + fd.getName() + " " + fd.getDescriptor());
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appendRenameComment(buffer, oldName, MType.FIELD, indent);
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}
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if (fd.isSynthetic()) {
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appendComment(buffer, "synthetic field", indent);
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}
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appendAnnotations(buffer, fd, indent);
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buffer.appendIndent(indent);
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if (!isEnum) {
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appendModifiers(buffer, fd.getAccessFlags(), FIELD_ALLOWED, isInterface, FIELD_EXCLUDED);
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}
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VarType fieldType = new VarType(fd.getDescriptor(), false);
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GenericFieldDescriptor descriptor = null;
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if (DecompilerContext.getOption(IFernflowerPreferences.DECOMPILE_GENERIC_SIGNATURES)) {
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StructGenericSignatureAttribute attr = (StructGenericSignatureAttribute)fd.getAttributes().getWithKey("Signature");
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if (attr != null) {
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descriptor = GenericMain.parseFieldSignature(attr.getSignature());
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}
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}
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if (!isEnum) {
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if (descriptor != null) {
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buffer.append(GenericMain.getGenericCastTypeName(descriptor.type));
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}
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else {
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buffer.append(ExprProcessor.getCastTypeName(fieldType));
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}
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buffer.append(' ');
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}
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buffer.append(fd.getName());
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tracer.incrementCurrentSourceLine(buffer.countLines(start));
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Exprent initializer;
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if (fd.hasModifier(CodeConstants.ACC_STATIC)) {
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initializer = wrapper.getStaticFieldInitializers().getWithKey(InterpreterUtil.makeUniqueKey(fd.getName(), fd.getDescriptor()));
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}
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else {
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initializer = wrapper.getDynamicFieldInitializers().getWithKey(InterpreterUtil.makeUniqueKey(fd.getName(), fd.getDescriptor()));
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}
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if (initializer != null) {
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if (isEnum && initializer.type == Exprent.EXPRENT_NEW) {
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NewExprent nexpr = (NewExprent)initializer;
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nexpr.setEnumConst(true);
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buffer.append(nexpr.toJava(indent, tracer));
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}
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else {
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buffer.append(" = ");
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// FIXME: special case field initializer. Can map to more than one method (constructor) and bytecode intruction.
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buffer.append(initializer.toJava(indent, tracer));
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}
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}
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else if (fd.hasModifier(CodeConstants.ACC_FINAL) && fd.hasModifier(CodeConstants.ACC_STATIC)) {
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StructConstantValueAttribute attr =
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(StructConstantValueAttribute)fd.getAttributes().getWithKey(StructGeneralAttribute.ATTRIBUTE_CONSTANT_VALUE);
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if (attr != null) {
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PrimitiveConstant constant = cl.getPool().getPrimitiveConstant(attr.getIndex());
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buffer.append(" = ");
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buffer.append(new ConstExprent(fieldType, constant.value, null).toJava(indent, tracer));
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}
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}
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if (!isEnum) {
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buffer.append(";").appendLineSeparator();
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tracer.incrementCurrentSourceLine();
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}
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}
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private static void methodLambdaToJava(ClassNode lambdaNode,
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ClassNode classNode,
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StructMethod mt,
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TextBuffer buffer,
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int indent,
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boolean codeOnly, BytecodeMappingTracer tracer) {
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ClassWrapper classWrapper = classNode.wrapper;
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MethodWrapper methodWrapper = classWrapper.getMethodWrapper(mt.getName(), mt.getDescriptor());
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MethodWrapper outerWrapper = (MethodWrapper)DecompilerContext.getProperty(DecompilerContext.CURRENT_METHOD_WRAPPER);
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DecompilerContext.setProperty(DecompilerContext.CURRENT_METHOD_WRAPPER, methodWrapper);
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try {
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String method_name = lambdaNode.lambdaInformation.method_name;
|
|
MethodDescriptor md_content = MethodDescriptor.parseDescriptor(lambdaNode.lambdaInformation.content_method_descriptor);
|
|
MethodDescriptor md_lambda = MethodDescriptor.parseDescriptor(lambdaNode.lambdaInformation.method_descriptor);
|
|
|
|
if (!codeOnly) {
|
|
buffer.appendIndent(indent);
|
|
buffer.append("public ");
|
|
buffer.append(method_name);
|
|
buffer.append("(");
|
|
|
|
boolean firstParameter = true;
|
|
int index = lambdaNode.lambdaInformation.is_content_method_static ? 0 : 1;
|
|
int start_index = md_content.params.length - md_lambda.params.length;
|
|
|
|
for (int i = 0; i < md_content.params.length; i++) {
|
|
if (i >= start_index) {
|
|
if (!firstParameter) {
|
|
buffer.append(", ");
|
|
}
|
|
|
|
String typeName = ExprProcessor.getCastTypeName(md_content.params[i].copy());
|
|
if (ExprProcessor.UNDEFINED_TYPE_STRING.equals(typeName) &&
|
|
DecompilerContext.getOption(IFernflowerPreferences.UNDEFINED_PARAM_TYPE_OBJECT)) {
|
|
typeName = ExprProcessor.getCastTypeName(VarType.VARTYPE_OBJECT);
|
|
}
|
|
|
|
buffer.append(typeName);
|
|
buffer.append(" ");
|
|
|
|
String parameterName = methodWrapper.varproc.getVarName(new VarVersionPair(index, 0));
|
|
buffer.append(parameterName == null ? "param" + index : parameterName); // null iff decompiled with errors
|
|
|
|
firstParameter = false;
|
|
}
|
|
|
|
index += md_content.params[i].stackSize;
|
|
}
|
|
|
|
buffer.append(") {").appendLineSeparator();
|
|
|
|
indent += 1;
|
|
}
|
|
|
|
if (!methodWrapper.decompiledWithErrors) {
|
|
RootStatement root = classWrapper.getMethodWrapper(mt.getName(), mt.getDescriptor()).root;
|
|
if (root != null) { // check for existence
|
|
try {
|
|
buffer.append(root.toJava(indent, tracer));
|
|
}
|
|
catch (Throwable ex) {
|
|
DecompilerContext.getLogger().writeMessage("Method " + mt.getName() + " " + mt.getDescriptor() + " couldn't be written.", ex);
|
|
methodWrapper.decompiledWithErrors = true;
|
|
}
|
|
}
|
|
}
|
|
|
|
if (methodWrapper.decompiledWithErrors) {
|
|
buffer.appendIndent(indent);
|
|
buffer.append("// $FF: Couldn't be decompiled");
|
|
buffer.appendLineSeparator();
|
|
}
|
|
|
|
if (!codeOnly) {
|
|
indent -= 1;
|
|
|
|
buffer.appendIndent(indent);
|
|
buffer.append('}');
|
|
buffer.appendLineSeparator();
|
|
}
|
|
}
|
|
finally {
|
|
DecompilerContext.setProperty(DecompilerContext.CURRENT_METHOD_WRAPPER, outerWrapper);
|
|
}
|
|
}
|
|
|
|
private boolean methodToJava(ClassNode node, StructMethod mt, TextBuffer buffer, int indent, BytecodeMappingTracer tracer) {
|
|
ClassWrapper wrapper = node.wrapper;
|
|
StructClass cl = wrapper.getClassStruct();
|
|
MethodWrapper methodWrapper = wrapper.getMethodWrapper(mt.getName(), mt.getDescriptor());
|
|
|
|
boolean hideMethod = false;
|
|
int start_index_method = buffer.length();
|
|
|
|
MethodWrapper outerWrapper = (MethodWrapper)DecompilerContext.getProperty(DecompilerContext.CURRENT_METHOD_WRAPPER);
|
|
DecompilerContext.setProperty(DecompilerContext.CURRENT_METHOD_WRAPPER, methodWrapper);
|
|
|
|
try {
|
|
boolean isInterface = cl.hasModifier(CodeConstants.ACC_INTERFACE);
|
|
boolean isAnnotation = cl.hasModifier(CodeConstants.ACC_ANNOTATION);
|
|
boolean isEnum = cl.hasModifier(CodeConstants.ACC_ENUM) && DecompilerContext.getOption(IFernflowerPreferences.DECOMPILE_ENUM);
|
|
boolean isDeprecated = mt.getAttributes().containsKey("Deprecated");
|
|
boolean clinit = false, init = false, dinit = false;
|
|
|
|
StructLineNumberTableAttribute lineNumberTable =
|
|
(StructLineNumberTableAttribute)mt.getAttributes().getWithKey(StructGeneralAttribute.ATTRIBUTE_LINE_NUMBER_TABLE);
|
|
tracer.setLineNumberTable(lineNumberTable);
|
|
|
|
MethodDescriptor md = MethodDescriptor.parseDescriptor(mt.getDescriptor());
|
|
|
|
int flags = mt.getAccessFlags();
|
|
if ((flags & CodeConstants.ACC_NATIVE) != 0) {
|
|
flags &= ~CodeConstants.ACC_STRICT; // compiler bug: a strictfp class sets all methods to strictfp
|
|
}
|
|
if ("<clinit>".equals(mt.getName())) {
|
|
flags &= CodeConstants.ACC_STATIC; // ignore all modifiers except 'static' in a static initializer
|
|
}
|
|
|
|
if (isDeprecated) {
|
|
appendDeprecation(buffer, indent);
|
|
}
|
|
|
|
if (interceptor != null) {
|
|
String oldName = interceptor.getOldName(cl.qualifiedName + " " + mt.getName() + " " + mt.getDescriptor());
|
|
appendRenameComment(buffer, oldName, MType.METHOD, indent);
|
|
}
|
|
|
|
boolean isSynthetic = (flags & CodeConstants.ACC_SYNTHETIC) != 0 || mt.getAttributes().containsKey("Synthetic");
|
|
boolean isBridge = (flags & CodeConstants.ACC_BRIDGE) != 0;
|
|
if (isSynthetic) {
|
|
appendComment(buffer, "synthetic method", indent);
|
|
}
|
|
if (isBridge) {
|
|
appendComment(buffer, "bridge method", indent);
|
|
}
|
|
|
|
appendAnnotations(buffer, mt, indent);
|
|
|
|
buffer.appendIndent(indent);
|
|
|
|
appendModifiers(buffer, flags, METHOD_ALLOWED, isInterface, METHOD_EXCLUDED);
|
|
|
|
if (isInterface && mt.containsCode()) {
|
|
// 'default' modifier (Java 8)
|
|
buffer.append("default ");
|
|
}
|
|
|
|
String name = mt.getName();
|
|
if ("<init>".equals(name)) {
|
|
if (node.type == ClassNode.CLASS_ANONYMOUS) {
|
|
name = "";
|
|
dinit = true;
|
|
}
|
|
else {
|
|
name = node.simpleName;
|
|
init = true;
|
|
}
|
|
}
|
|
else if ("<clinit>".equals(name)) {
|
|
name = "";
|
|
clinit = true;
|
|
}
|
|
|
|
GenericMethodDescriptor descriptor = null;
|
|
if (DecompilerContext.getOption(IFernflowerPreferences.DECOMPILE_GENERIC_SIGNATURES)) {
|
|
StructGenericSignatureAttribute attr = (StructGenericSignatureAttribute)mt.getAttributes().getWithKey("Signature");
|
|
if (attr != null) {
|
|
descriptor = GenericMain.parseMethodSignature(attr.getSignature());
|
|
if (descriptor != null) {
|
|
int actualParams = md.params.length;
|
|
if (isEnum && init) actualParams -= 2;
|
|
if (actualParams != descriptor.params.size()) {
|
|
String message = "Inconsistent generic signature in method " + mt.getName() + " " + mt.getDescriptor();
|
|
DecompilerContext.getLogger().writeMessage(message, IFernflowerLogger.Severity.WARN);
|
|
descriptor = null;
|
|
}
|
|
}
|
|
}
|
|
}
|
|
|
|
boolean throwsExceptions = false;
|
|
int paramCount = 0;
|
|
|
|
if (!clinit && !dinit) {
|
|
boolean thisVar = !mt.hasModifier(CodeConstants.ACC_STATIC);
|
|
|
|
if (descriptor != null && !descriptor.fparameters.isEmpty()) {
|
|
appendTypeParameters(buffer, descriptor.fparameters, descriptor.fbounds);
|
|
buffer.append(' ');
|
|
}
|
|
|
|
if (!init) {
|
|
if (descriptor != null) {
|
|
buffer.append(GenericMain.getGenericCastTypeName(descriptor.ret));
|
|
}
|
|
else {
|
|
buffer.append(ExprProcessor.getCastTypeName(md.ret));
|
|
}
|
|
buffer.append(' ');
|
|
}
|
|
|
|
buffer.append(name);
|
|
buffer.append('(');
|
|
|
|
// parameters
|
|
List<VarVersionPair> signFields = methodWrapper.signatureFields;
|
|
|
|
int lastVisibleParameterIndex = -1;
|
|
for (int i = 0; i < md.params.length; i++) {
|
|
if (signFields == null || signFields.get(i) == null) {
|
|
lastVisibleParameterIndex = i;
|
|
}
|
|
}
|
|
|
|
boolean firstParameter = true;
|
|
int index = isEnum && init ? 3 : thisVar ? 1 : 0;
|
|
int start = isEnum && init && descriptor == null ? 2 : 0;
|
|
int params = descriptor == null ? md.params.length : descriptor.params.size();
|
|
for (int i = start; i < params; i++) {
|
|
if (signFields == null || signFields.get(i) == null) {
|
|
if (!firstParameter) {
|
|
buffer.append(", ");
|
|
}
|
|
|
|
appendParameterAnnotations(buffer, mt, paramCount);
|
|
|
|
if (methodWrapper.varproc.getVarFinal(new VarVersionPair(index, 0)) == VarTypeProcessor.VAR_EXPLICIT_FINAL) {
|
|
buffer.append("final ");
|
|
}
|
|
|
|
if (descriptor != null) {
|
|
GenericType parameterType = descriptor.params.get(i);
|
|
|
|
boolean isVarArg = (i == lastVisibleParameterIndex && mt.hasModifier(CodeConstants.ACC_VARARGS) && parameterType.arrayDim > 0);
|
|
if (isVarArg) {
|
|
parameterType = parameterType.decreaseArrayDim();
|
|
}
|
|
|
|
String typeName = GenericMain.getGenericCastTypeName(parameterType);
|
|
if (ExprProcessor.UNDEFINED_TYPE_STRING.equals(typeName) &&
|
|
DecompilerContext.getOption(IFernflowerPreferences.UNDEFINED_PARAM_TYPE_OBJECT)) {
|
|
typeName = ExprProcessor.getCastTypeName(VarType.VARTYPE_OBJECT);
|
|
}
|
|
|
|
buffer.append(typeName);
|
|
|
|
if (isVarArg) {
|
|
buffer.append("...");
|
|
}
|
|
}
|
|
else {
|
|
VarType parameterType = md.params[i];
|
|
|
|
boolean isVarArg = (i == lastVisibleParameterIndex && mt.hasModifier(CodeConstants.ACC_VARARGS) && parameterType.arrayDim > 0);
|
|
if (isVarArg) {
|
|
parameterType = parameterType.decreaseArrayDim();
|
|
}
|
|
|
|
String typeName = ExprProcessor.getCastTypeName(parameterType);
|
|
if (ExprProcessor.UNDEFINED_TYPE_STRING.equals(typeName) &&
|
|
DecompilerContext.getOption(IFernflowerPreferences.UNDEFINED_PARAM_TYPE_OBJECT)) {
|
|
typeName = ExprProcessor.getCastTypeName(VarType.VARTYPE_OBJECT);
|
|
}
|
|
|
|
buffer.append(typeName);
|
|
|
|
if (isVarArg) {
|
|
buffer.append("...");
|
|
}
|
|
}
|
|
|
|
buffer.append(' ');
|
|
String parameterName = methodWrapper.varproc.getVarName(new VarVersionPair(index, 0));
|
|
buffer.append(parameterName == null ? "param" + index : parameterName); // null iff decompiled with errors
|
|
|
|
firstParameter = false;
|
|
paramCount++;
|
|
}
|
|
|
|
index += md.params[i].stackSize;
|
|
}
|
|
|
|
buffer.append(')');
|
|
|
|
StructExceptionsAttribute attr = (StructExceptionsAttribute)mt.getAttributes().getWithKey("Exceptions");
|
|
if ((descriptor != null && !descriptor.exceptions.isEmpty()) || attr != null) {
|
|
throwsExceptions = true;
|
|
buffer.append(" throws ");
|
|
|
|
for (int i = 0; i < attr.getThrowsExceptions().size(); i++) {
|
|
if (i > 0) {
|
|
buffer.append(", ");
|
|
}
|
|
if (descriptor != null && !descriptor.exceptions.isEmpty()) {
|
|
GenericType type = descriptor.exceptions.get(i);
|
|
buffer.append(GenericMain.getGenericCastTypeName(type));
|
|
}
|
|
else {
|
|
VarType type = new VarType(attr.getExcClassname(i, cl.getPool()), true);
|
|
buffer.append(ExprProcessor.getCastTypeName(type));
|
|
}
|
|
}
|
|
}
|
|
}
|
|
|
|
tracer.incrementCurrentSourceLine(buffer.countLines(start_index_method));
|
|
|
|
if ((flags & (CodeConstants.ACC_ABSTRACT | CodeConstants.ACC_NATIVE)) != 0) { // native or abstract method (explicit or interface)
|
|
if (isAnnotation) {
|
|
StructAnnDefaultAttribute attr = (StructAnnDefaultAttribute)mt.getAttributes().getWithKey("AnnotationDefault");
|
|
if (attr != null) {
|
|
buffer.append(" default ");
|
|
buffer.append(attr.getDefaultValue().toJava(indent + 1, new BytecodeMappingTracer())); // dummy tracer
|
|
}
|
|
}
|
|
|
|
buffer.append(';');
|
|
buffer.appendLineSeparator();
|
|
tracer.incrementCurrentSourceLine();
|
|
}
|
|
else {
|
|
if (!clinit && !dinit) {
|
|
buffer.append(' ');
|
|
}
|
|
|
|
// We do not have line information for method start, lets have it here for now
|
|
if (lineNumberTable != null && DecompilerContext.getOption(IFernflowerPreferences.USE_DEBUG_LINE_NUMBERS)) {
|
|
buffer.setCurrentLine(lineNumberTable.getFirstLine() - 1);
|
|
}
|
|
buffer.append('{').appendLineSeparator();
|
|
tracer.incrementCurrentSourceLine();
|
|
|
|
RootStatement root = wrapper.getMethodWrapper(mt.getName(), mt.getDescriptor()).root;
|
|
|
|
if (root != null && !methodWrapper.decompiledWithErrors) { // check for existence
|
|
try {
|
|
int startLine = tracer.getCurrentSourceLine();
|
|
|
|
TextBuffer code = root.toJava(indent + 1, tracer);
|
|
|
|
hideMethod = (clinit || dinit || hideConstructor(wrapper, init, throwsExceptions, paramCount)) && code.length() == 0;
|
|
|
|
if (!hideMethod && lineNumberTable != null && DecompilerContext.getOption(IFernflowerPreferences.USE_DEBUG_LINE_NUMBERS)) {
|
|
mapLines(code, lineNumberTable, tracer, startLine);
|
|
}
|
|
|
|
buffer.append(code);
|
|
}
|
|
catch (Throwable ex) {
|
|
DecompilerContext.getLogger().writeMessage("Method " + mt.getName() + " " + mt.getDescriptor() + " couldn't be written.", ex);
|
|
methodWrapper.decompiledWithErrors = true;
|
|
}
|
|
}
|
|
|
|
if (methodWrapper.decompiledWithErrors) {
|
|
buffer.appendIndent(indent + 1);
|
|
buffer.append("// $FF: Couldn't be decompiled");
|
|
buffer.appendLineSeparator();
|
|
tracer.incrementCurrentSourceLine();
|
|
}
|
|
|
|
buffer.appendIndent(indent).append('}').appendLineSeparator();
|
|
tracer.incrementCurrentSourceLine();
|
|
}
|
|
}
|
|
finally {
|
|
DecompilerContext.setProperty(DecompilerContext.CURRENT_METHOD_WRAPPER, outerWrapper);
|
|
}
|
|
|
|
// save total lines
|
|
// TODO: optimize
|
|
//tracer.setCurrentSourceLine(buffer.countLines(start_index_method));
|
|
|
|
return !hideMethod;
|
|
}
|
|
|
|
private static void mapLines(TextBuffer code, StructLineNumberTableAttribute table, BytecodeMappingTracer tracer, int startLine) {
|
|
// build line start offsets map
|
|
HashMap<Integer, Set<Integer>> lineStartOffsets = new HashMap<Integer, Set<Integer>>();
|
|
for (Map.Entry<Integer, Integer> entry : tracer.getMapping().entrySet()) {
|
|
Integer lineNumber = entry.getValue() - startLine;
|
|
Set<Integer> curr = lineStartOffsets.get(lineNumber);
|
|
if (curr == null) {
|
|
curr = new TreeSet<Integer>(); // requires natural sorting!
|
|
}
|
|
curr.add(entry.getKey());
|
|
lineStartOffsets.put(lineNumber, curr);
|
|
}
|
|
String lineSeparator = DecompilerContext.getNewLineSeparator();
|
|
StringBuilder text = code.getOriginalText();
|
|
int pos = text.indexOf(lineSeparator);
|
|
int lineNumber = 0;
|
|
while (pos != -1) {
|
|
Set<Integer> startOffsets = lineStartOffsets.get(lineNumber);
|
|
if (startOffsets != null) {
|
|
for (Integer offset : startOffsets) {
|
|
int number = table.findLineNumber(offset);
|
|
if (number >= 0) {
|
|
code.setLineMapping(number, pos);
|
|
break;
|
|
}
|
|
}
|
|
}
|
|
pos = text.indexOf(lineSeparator, pos+1);
|
|
lineNumber++;
|
|
}
|
|
}
|
|
|
|
private static boolean hideConstructor(ClassWrapper wrapper, boolean init, boolean throwsExceptions, int paramCount) {
|
|
if (!init || throwsExceptions || paramCount > 0 || !DecompilerContext.getOption(IFernflowerPreferences.HIDE_DEFAULT_CONSTRUCTOR)) {
|
|
return false;
|
|
}
|
|
|
|
int count = 0;
|
|
for (StructMethod mt : wrapper.getClassStruct().getMethods()) {
|
|
if ("<init>".equals(mt.getName())) {
|
|
if (++count > 1) {
|
|
return false;
|
|
}
|
|
}
|
|
}
|
|
|
|
return true;
|
|
}
|
|
|
|
private static void appendDeprecation(TextBuffer buffer, int indent) {
|
|
buffer.appendIndent(indent).append("/** @deprecated */").appendLineSeparator();
|
|
}
|
|
|
|
private enum MType {CLASS, FIELD, METHOD}
|
|
|
|
private static void appendRenameComment(TextBuffer buffer, String oldName, MType type, int indent) {
|
|
if (oldName == null) return;
|
|
|
|
buffer.appendIndent(indent);
|
|
buffer.append("// $FF: renamed from: ");
|
|
|
|
switch (type) {
|
|
case CLASS:
|
|
buffer.append(ExprProcessor.buildJavaClassName(oldName));
|
|
break;
|
|
|
|
case FIELD:
|
|
String[] fParts = oldName.split(" ");
|
|
FieldDescriptor fd = FieldDescriptor.parseDescriptor(fParts[2]);
|
|
buffer.append(fParts[1]);
|
|
buffer.append(' ');
|
|
buffer.append(getTypePrintOut(fd.type));
|
|
break;
|
|
|
|
default:
|
|
String[] mParts = oldName.split(" ");
|
|
MethodDescriptor md = MethodDescriptor.parseDescriptor(mParts[2]);
|
|
buffer.append(mParts[1]);
|
|
buffer.append(" (");
|
|
boolean first = true;
|
|
for (VarType paramType : md.params) {
|
|
if (!first) {
|
|
buffer.append(", ");
|
|
}
|
|
first = false;
|
|
buffer.append(getTypePrintOut(paramType));
|
|
}
|
|
buffer.append(") ");
|
|
buffer.append(getTypePrintOut(md.ret));
|
|
}
|
|
|
|
buffer.appendLineSeparator();
|
|
}
|
|
|
|
private static String getTypePrintOut(VarType type) {
|
|
String typeText = ExprProcessor.getCastTypeName(type, false);
|
|
if (ExprProcessor.UNDEFINED_TYPE_STRING.equals(typeText) &&
|
|
DecompilerContext.getOption(IFernflowerPreferences.UNDEFINED_PARAM_TYPE_OBJECT)) {
|
|
typeText = ExprProcessor.getCastTypeName(VarType.VARTYPE_OBJECT, false);
|
|
}
|
|
return typeText;
|
|
}
|
|
|
|
private static void appendComment(TextBuffer buffer, String comment, int indent) {
|
|
buffer.appendIndent(indent).append("// $FF: ").append(comment).appendLineSeparator();
|
|
}
|
|
|
|
private static final String[] ANNOTATION_ATTRIBUTES = {
|
|
StructGeneralAttribute.ATTRIBUTE_RUNTIME_VISIBLE_ANNOTATIONS, StructGeneralAttribute.ATTRIBUTE_RUNTIME_INVISIBLE_ANNOTATIONS};
|
|
|
|
private static void appendAnnotations(TextBuffer buffer, StructMember mb, int indent) {
|
|
|
|
BytecodeMappingTracer tracer_dummy = new BytecodeMappingTracer(); // FIXME: replace with a real one
|
|
|
|
for (String name : ANNOTATION_ATTRIBUTES) {
|
|
StructAnnotationAttribute attribute = (StructAnnotationAttribute)mb.getAttributes().getWithKey(name);
|
|
if (attribute != null) {
|
|
for (AnnotationExprent annotation : attribute.getAnnotations()) {
|
|
buffer.append(annotation.toJava(indent, tracer_dummy)).appendLineSeparator();
|
|
}
|
|
}
|
|
}
|
|
}
|
|
|
|
private static final String[] PARAMETER_ANNOTATION_ATTRIBUTES = {
|
|
StructGeneralAttribute.ATTRIBUTE_RUNTIME_VISIBLE_PARAMETER_ANNOTATIONS, StructGeneralAttribute.ATTRIBUTE_RUNTIME_INVISIBLE_PARAMETER_ANNOTATIONS};
|
|
|
|
private static void appendParameterAnnotations(TextBuffer buffer, StructMethod mt, int param) {
|
|
|
|
BytecodeMappingTracer tracer_dummy = new BytecodeMappingTracer(); // FIXME: replace with a real one
|
|
|
|
for (String name : PARAMETER_ANNOTATION_ATTRIBUTES) {
|
|
StructAnnotationParameterAttribute attribute = (StructAnnotationParameterAttribute)mt.getAttributes().getWithKey(name);
|
|
if (attribute != null) {
|
|
List<List<AnnotationExprent>> annotations = attribute.getParamAnnotations();
|
|
if (param < annotations.size()) {
|
|
for (AnnotationExprent annotation : annotations.get(param)) {
|
|
buffer.append(annotation.toJava(0, tracer_dummy)).append(' ');
|
|
}
|
|
}
|
|
}
|
|
}
|
|
}
|
|
|
|
private static final Map<Integer, String> MODIFIERS = new LinkedHashMap<Integer, String>() {{
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put(CodeConstants.ACC_PUBLIC, "public");
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put(CodeConstants.ACC_PROTECTED, "protected");
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put(CodeConstants.ACC_PRIVATE, "private");
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put(CodeConstants.ACC_ABSTRACT, "abstract");
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put(CodeConstants.ACC_STATIC, "static");
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put(CodeConstants.ACC_FINAL, "final");
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put(CodeConstants.ACC_STRICT, "strictfp");
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put(CodeConstants.ACC_TRANSIENT, "transient");
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put(CodeConstants.ACC_VOLATILE, "volatile");
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put(CodeConstants.ACC_SYNCHRONIZED, "synchronized");
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put(CodeConstants.ACC_NATIVE, "native");
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}};
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private static final int CLASS_ALLOWED =
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CodeConstants.ACC_PUBLIC | CodeConstants.ACC_PROTECTED | CodeConstants.ACC_PRIVATE | CodeConstants.ACC_ABSTRACT |
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CodeConstants.ACC_STATIC | CodeConstants.ACC_FINAL | CodeConstants.ACC_STRICT;
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private static final int FIELD_ALLOWED =
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CodeConstants.ACC_PUBLIC | CodeConstants.ACC_PROTECTED | CodeConstants.ACC_PRIVATE | CodeConstants.ACC_STATIC |
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CodeConstants.ACC_FINAL | CodeConstants.ACC_TRANSIENT | CodeConstants.ACC_VOLATILE;
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private static final int METHOD_ALLOWED =
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CodeConstants.ACC_PUBLIC | CodeConstants.ACC_PROTECTED | CodeConstants.ACC_PRIVATE | CodeConstants.ACC_ABSTRACT |
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CodeConstants.ACC_STATIC | CodeConstants.ACC_FINAL | CodeConstants.ACC_SYNCHRONIZED | CodeConstants.ACC_NATIVE | CodeConstants.ACC_STRICT;
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private static final int CLASS_EXCLUDED = CodeConstants.ACC_ABSTRACT | CodeConstants.ACC_STATIC;
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private static final int FIELD_EXCLUDED = CodeConstants.ACC_PUBLIC | CodeConstants.ACC_STATIC | CodeConstants.ACC_FINAL;
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private static final int METHOD_EXCLUDED = CodeConstants.ACC_PUBLIC | CodeConstants.ACC_ABSTRACT;
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private static void appendModifiers(TextBuffer buffer, int flags, int allowed, boolean isInterface, int excluded) {
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flags &= allowed;
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if (!isInterface) excluded = 0;
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for (int modifier : MODIFIERS.keySet()) {
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if ((flags & modifier) == modifier && (modifier & excluded) == 0) {
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buffer.append(MODIFIERS.get(modifier)).append(' ');
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}
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}
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}
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private static void appendTypeParameters(TextBuffer buffer, List<String> parameters, List<List<GenericType>> bounds) {
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buffer.append('<');
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for (int i = 0; i < parameters.size(); i++) {
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if (i > 0) {
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buffer.append(", ");
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}
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buffer.append(parameters.get(i));
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List<GenericType> parameterBounds = bounds.get(i);
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if (parameterBounds.size() > 1 || !"java/lang/Object".equals(parameterBounds.get(0).value)) {
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buffer.append(" extends ");
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buffer.append(GenericMain.getGenericCastTypeName(parameterBounds.get(0)));
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for (int j = 1; j < parameterBounds.size(); j++) {
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buffer.append(" & ");
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buffer.append(GenericMain.getGenericCastTypeName(parameterBounds.get(j)));
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}
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}
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}
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buffer.append('>');
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}
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}
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