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https://github.com/moparisthebest/fernflower
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java-decompiler: hide synthetic field assignment
This commit is contained in:
Roman Shevchenko
parent
2df49d32a7
commit
646f1c3f21
@ -15,97 +15,58 @@
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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.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.NewExprent;
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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.struct.gen.FieldDescriptor;
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import org.jetbrains.java.decompiler.struct.gen.VarType;
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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() and valueOf()
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for (StructMethod meth : cl.getMethods()) {
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String name = meth.getName();
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int flag = 0;
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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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flag = 1;
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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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flag = 2;
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}
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if (flag > 0) {
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String[] arr = meth.getDescriptor().split("[()]");
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String par = arr[1];
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if ((flag == 1 && par.length() == 0) ||
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flag == 2 && "Ljava/lang/String;".equals(par)) {
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wrapper.getHideMembers().add(InterpreterUtil.makeUniqueKey(name, meth.getDescriptor()));
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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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}
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// hide all super invocations
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for (MethodWrapper meth : wrapper.getMethods()) {
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if ("<init>".equals(meth.methodStruct.getName())) {
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Statement firstdata = findFirstData(meth.root);
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if (firstdata == null || firstdata.getExprents().isEmpty()) {
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return;
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}
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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, meth, wrapper)) {
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firstdata.getExprents().remove(0);
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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 dummy synthetic fields of enum constants
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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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if (fd.hasModifier(CodeConstants.ACC_ENUM)) {
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Exprent initializer =
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wrapper.getStaticFieldInitializers().getWithKey(InterpreterUtil.makeUniqueKey(fd.getName(), fd.getDescriptor()));
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if (initializer != null && initializer.type == Exprent.EXPRENT_NEW) {
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NewExprent nexpr = (NewExprent)initializer;
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if (nexpr.isAnonymous()) {
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ClassNode child = DecompilerContext.getClassProcessor().getMapRootClasses().get(nexpr.getNewtype().value);
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hideDummyFieldInConstant(child.wrapper);
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}
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}
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}
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}
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}
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private static void hideDummyFieldInConstant(ClassWrapper wrapper) {
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StructClass cl = wrapper.getClassStruct();
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for (StructField fd : cl.getFields()) {
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if (fd.isSynthetic()) {
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FieldDescriptor descr = FieldDescriptor.parseDescriptor(fd.getDescriptor());
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VarType ret = descr.type;
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if (ret.type == CodeConstants.TYPE_OBJECT && ret.arraydim == 1 && cl.qualifiedName.equals(ret.value)) {
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wrapper.getHideMembers().add(InterpreterUtil.makeUniqueKey(fd.getName(), fd.getDescriptor()));
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}
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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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@ -20,7 +20,6 @@ import org.jetbrains.java.decompiler.main.ClassesProcessor.ClassNode;
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import org.jetbrains.java.decompiler.main.DecompilerContext;
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import org.jetbrains.java.decompiler.modules.decompiler.ExprProcessor;
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import org.jetbrains.java.decompiler.modules.decompiler.vars.CheckTypesResult;
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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.gen.VarType;
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import org.jetbrains.java.decompiler.util.InterpreterUtil;
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@ -105,26 +104,33 @@ public class AssignmentExprent extends Exprent {
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}
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public String toJava(int indent) {
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VarType leftType = left.getExprType();
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VarType rightType = right.getExprType();
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boolean fieldInStatInit = false;
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boolean fieldInClassInit = false, hiddenField = false;
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if (left.type == Exprent.EXPRENT_FIELD) { // first assignment to a final field. Field name without "this" in front of it
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FieldExprent field = (FieldExprent)left;
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ClassNode node = ((ClassNode)DecompilerContext.getProperty(DecompilerContext.CURRENT_CLASS_NODE));
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if (node != null) {
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StructClass cl = node.classStruct;
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StructField fd = cl.getField(field.getName(), field.getDescriptor().descriptorString);
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if (fd != null && field.isStatic() && fd.hasModifier(CodeConstants.ACC_FINAL)) {
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fieldInStatInit = true;
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StructField fd = node.classStruct.getField(field.getName(), field.getDescriptor().descriptorString);
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if (fd != null) {
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if (field.isStatic() && fd.hasModifier(CodeConstants.ACC_FINAL)) {
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fieldInClassInit = true;
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}
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if (node.wrapper.getHideMembers().contains(InterpreterUtil.makeUniqueKey(fd.getName(), fd.getDescriptor()))) {
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hiddenField = true;
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}
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}
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}
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}
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if (hiddenField) {
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return "";
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}
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StringBuilder buffer = new StringBuilder();
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if (fieldInStatInit) {
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if (fieldInClassInit) {
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buffer.append(((FieldExprent)left).getName());
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}
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else {
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@ -65,7 +65,7 @@ public class SingleClassesTest {
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@Test public void testMethodParameters() { doTest("TestMethodParameters"); }
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@Test public void testCodeConstructs() { doTest("TestCodeConstructs"); }
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@Test public void testConstants() { doTest("TestConstants"); }
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//@Test public void testEnum() { doTest("TestEnum"); }
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@Test public void testEnum() { doTest("TestEnum"); }
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private void doTest(final String testName) {
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try {
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