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Cleanup (duplicates extracted; formatting; typos)

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This commit is contained in:
Roman Shevchenko
2016-04-11 20:32:26 +02:00
parent 404783c874
commit a57e42690b
4 changed files with 134 additions and 186 deletions
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57
src/org/jetbrains/java/decompiler/main/EnumProcessor.java
View File

@@ -1,5 +1,5 @@
/*
* Copyright 2000-2015 JetBrains s.r.o.
* Copyright 2000-2016 JetBrains s.r.o.
*
* Licensed under the Apache License, Version 2.0 (the "License");
* you may not use this file except in compliance with the License.
@@ -20,16 +20,14 @@ import org.jetbrains.java.decompiler.main.rels.ClassWrapper;
import org.jetbrains.java.decompiler.main.rels.MethodWrapper;
import org.jetbrains.java.decompiler.modules.decompiler.exps.Exprent;
import org.jetbrains.java.decompiler.modules.decompiler.exps.InvocationExprent;
import org.jetbrains.java.decompiler.modules.decompiler.exps.VarExprent;
import org.jetbrains.java.decompiler.modules.decompiler.stats.Statement;
import org.jetbrains.java.decompiler.modules.decompiler.vars.VarVersionPair;
import org.jetbrains.java.decompiler.modules.decompiler.stats.Statements;
import org.jetbrains.java.decompiler.struct.StructClass;
import org.jetbrains.java.decompiler.struct.StructField;
import org.jetbrains.java.decompiler.struct.StructMethod;
import org.jetbrains.java.decompiler.util.InterpreterUtil;
public class EnumProcessor {
public static void clearEnum(ClassWrapper wrapper) {
StructClass cl = wrapper.getClassStruct();
@@ -50,12 +48,12 @@ public class EnumProcessor {
}
}
else if (CodeConstants.INIT_NAME.equals(name)) {
Statement firstData = findFirstData(method.root);
Statement firstData = Statements.findFirstData(method.root);
if (firstData != null && !firstData.getExprents().isEmpty()) {
Exprent exprent = firstData.getExprents().get(0);
if (exprent.type == Exprent.EXPRENT_INVOCATION) {
InvocationExprent invexpr = (InvocationExprent)exprent;
if (isInvocationSuperConstructor(invexpr, method, wrapper)) {
InvocationExprent invExpr = (InvocationExprent)exprent;
if (Statements.isInvocationInitConstructor(invExpr, method, wrapper, false)) {
firstData.getExprents().remove(0);
}
}
@@ -71,49 +69,4 @@ public class EnumProcessor {
}
}
}
// FIXME: move to a util class (see also InitializerProcessor)
private static Statement findFirstData(Statement stat) {
if (stat.getExprents() != null) {
return stat;
}
else {
if (stat.isLabeled()) {
return null;
}
switch (stat.type) {
case Statement.TYPE_SEQUENCE:
case Statement.TYPE_IF:
case Statement.TYPE_ROOT:
case Statement.TYPE_SWITCH:
case Statement.TYPE_SYNCRONIZED:
return findFirstData(stat.getFirst());
default:
return null;
}
}
}
// FIXME: move to util class (see also InitializerProcessor)
private static boolean isInvocationSuperConstructor(InvocationExprent inv, MethodWrapper meth, ClassWrapper wrapper) {
if (inv.getFunctype() == InvocationExprent.TYP_INIT) {
if (inv.getInstance().type == Exprent.EXPRENT_VAR) {
VarExprent instvar = (VarExprent)inv.getInstance();
VarVersionPair varpaar = new VarVersionPair(instvar);
String classname = meth.varproc.getThisVars().get(varpaar);
if (classname != null) { // any this instance. TODO: Restrict to current class?
if (!wrapper.getClassStruct().qualifiedName.equals(inv.getClassname())) {
return true;
}
}
}
}
return false;
}
}

185
src/org/jetbrains/java/decompiler/main/InitializerProcessor.java
View File

@@ -1,5 +1,5 @@
/*
* Copyright 2000-2015 JetBrains s.r.o.
* Copyright 2000-2016 JetBrains s.r.o.
*
* Licensed under the Apache License, Version 2.0 (the "License");
* you may not use this file except in compliance with the License.
@@ -23,6 +23,7 @@ import org.jetbrains.java.decompiler.main.rels.MethodWrapper;
import org.jetbrains.java.decompiler.modules.decompiler.exps.*;
import org.jetbrains.java.decompiler.modules.decompiler.stats.RootStatement;
import org.jetbrains.java.decompiler.modules.decompiler.stats.Statement;
import org.jetbrains.java.decompiler.modules.decompiler.stats.Statements;
import org.jetbrains.java.decompiler.modules.decompiler.vars.VarVersionPair;
import org.jetbrains.java.decompiler.struct.StructClass;
import org.jetbrains.java.decompiler.struct.StructField;
@@ -31,14 +32,11 @@ import org.jetbrains.java.decompiler.util.InterpreterUtil;
import java.util.ArrayList;
import java.util.List;
public class InitializerProcessor {
public static void extractInitializers(ClassWrapper wrapper) {
MethodWrapper meth = wrapper.getMethodWrapper(CodeConstants.CLINIT_NAME, "()V");
if (meth != null && meth.root != null) { // successfully decompiled static constructor
extractStaticInitializers(wrapper, meth);
MethodWrapper method = wrapper.getMethodWrapper(CodeConstants.CLINIT_NAME, "()V");
if (method != null && method.root != null) { // successfully decompiled static constructor
extractStaticInitializers(wrapper, method);
}
extractDynamicInitializers(wrapper);
@@ -52,30 +50,26 @@ public class InitializerProcessor {
}
}
private static void liftConstructor(ClassWrapper wrapper) {
for (MethodWrapper meth : wrapper.getMethods()) {
if (CodeConstants.INIT_NAME.equals(meth.methodStruct.getName()) && meth.root != null) {
Statement firstdata = findFirstData(meth.root);
if (firstdata == null) {
for (MethodWrapper method : wrapper.getMethods()) {
if (CodeConstants.INIT_NAME.equals(method.methodStruct.getName()) && method.root != null) {
Statement firstData = Statements.findFirstData(method.root);
if (firstData == null) {
return;
}
int index = 0;
List<Exprent> lstExprents = firstdata.getExprents();
List<Exprent> lstExprents = firstData.getExprents();
for (Exprent exprent : lstExprents) {
int action = 0;
if (exprent.type == Exprent.EXPRENT_ASSIGNMENT) {
AssignmentExprent asexpr = (AssignmentExprent)exprent;
if (asexpr.getLeft().type == Exprent.EXPRENT_FIELD && asexpr.getRight().type == Exprent.EXPRENT_VAR) {
FieldExprent fexpr = (FieldExprent)asexpr.getLeft();
if (fexpr.getClassname().equals(wrapper.getClassStruct().qualifiedName)) {
StructField structField = wrapper.getClassStruct().getField(fexpr.getName(), fexpr.getDescriptor().descriptorString);
AssignmentExprent assignExpr = (AssignmentExprent)exprent;
if (assignExpr.getLeft().type == Exprent.EXPRENT_FIELD && assignExpr.getRight().type == Exprent.EXPRENT_VAR) {
FieldExprent fExpr = (FieldExprent)assignExpr.getLeft();
if (fExpr.getClassname().equals(wrapper.getClassStruct().qualifiedName)) {
StructField structField = wrapper.getClassStruct().getField(fExpr.getName(), fExpr.getDescriptor().descriptorString);
if (structField != null && structField.hasModifier(CodeConstants.ACC_FINAL)) {
action = 1;
}
@@ -83,7 +77,7 @@ public class InitializerProcessor {
}
}
else if (index > 0 && exprent.type == Exprent.EXPRENT_INVOCATION &&
isInvocationInitConstructor((InvocationExprent)exprent, meth, wrapper, true)) {
Statements.isInvocationInitConstructor((InvocationExprent)exprent, method, wrapper, true)) {
// this() or super()
lstExprents.add(0, lstExprents.remove(index));
action = 2;
@@ -99,53 +93,50 @@ public class InitializerProcessor {
}
}
private static void hideEmptySuper(ClassWrapper wrapper) {
for (MethodWrapper meth : wrapper.getMethods()) {
if (CodeConstants.INIT_NAME.equals(meth.methodStruct.getName()) && meth.root != null) {
Statement firstdata = findFirstData(meth.root);
if (firstdata == null || firstdata.getExprents().isEmpty()) {
for (MethodWrapper method : wrapper.getMethods()) {
if (CodeConstants.INIT_NAME.equals(method.methodStruct.getName()) && method.root != null) {
Statement firstData = Statements.findFirstData(method.root);
if (firstData == null || firstData.getExprents().isEmpty()) {
return;
}
Exprent exprent = firstdata.getExprents().get(0);
Exprent exprent = firstData.getExprents().get(0);
if (exprent.type == Exprent.EXPRENT_INVOCATION) {
InvocationExprent invexpr = (InvocationExprent)exprent;
if (isInvocationInitConstructor(invexpr, meth, wrapper, false) && invexpr.getLstParameters().isEmpty()) {
firstdata.getExprents().remove(0);
InvocationExprent invExpr = (InvocationExprent)exprent;
if (Statements.isInvocationInitConstructor(invExpr, method, wrapper, false) && invExpr.getLstParameters().isEmpty()) {
firstData.getExprents().remove(0);
}
}
}
}
}
private static void extractStaticInitializers(ClassWrapper wrapper, MethodWrapper meth) {
RootStatement root = meth.root;
private static void extractStaticInitializers(ClassWrapper wrapper, MethodWrapper method) {
RootStatement root = method.root;
StructClass cl = wrapper.getClassStruct();
boolean isInterface = cl.hasModifier(CodeConstants.ACC_INTERFACE);
Statement firstdata = findFirstData(root);
if (firstdata != null) {
while (!firstdata.getExprents().isEmpty()) {
Exprent exprent = firstdata.getExprents().get(0);
Statement firstData = Statements.findFirstData(root);
if (firstData != null) {
boolean isInterface = cl.hasModifier(CodeConstants.ACC_INTERFACE);
while (!firstData.getExprents().isEmpty()) {
Exprent exprent = firstData.getExprents().get(0);
boolean found = false;
if (exprent.type == Exprent.EXPRENT_ASSIGNMENT) {
AssignmentExprent asexpr = (AssignmentExprent)exprent;
if (asexpr.getLeft().type == Exprent.EXPRENT_FIELD) {
FieldExprent fexpr = (FieldExprent)asexpr.getLeft();
if (fexpr.isStatic() && fexpr.getClassname().equals(cl.qualifiedName) &&
cl.hasField(fexpr.getName(), fexpr.getDescriptor().descriptorString)) {
AssignmentExprent assignExpr = (AssignmentExprent)exprent;
if (assignExpr.getLeft().type == Exprent.EXPRENT_FIELD) {
FieldExprent fExpr = (FieldExprent)assignExpr.getLeft();
if (fExpr.isStatic() && fExpr.getClassname().equals(cl.qualifiedName) &&
cl.hasField(fExpr.getName(), fExpr.getDescriptor().descriptorString)) {
// interfaces fields should always be initialized inline
if (isInterface || isExprentIndependent(asexpr.getRight(), meth)) {
if (isInterface || isExprentIndependent(assignExpr.getRight(), method)) {
String keyField = InterpreterUtil.makeUniqueKey(fexpr.getName(), fexpr.getDescriptor().descriptorString);
String keyField = InterpreterUtil.makeUniqueKey(fExpr.getName(), fExpr.getDescriptor().descriptorString);
if (!wrapper.getStaticFieldInitializers().containsKey(keyField)) {
wrapper.getStaticFieldInitializers().addWithKey(asexpr.getRight(), keyField);
firstdata.getExprents().remove(0);
wrapper.getStaticFieldInitializers().addWithKey(assignExpr.getRight(), keyField);
firstData.getExprents().remove(0);
found = true;
}
}
@@ -161,27 +152,26 @@ public class InitializerProcessor {
}
private static void extractDynamicInitializers(ClassWrapper wrapper) {
StructClass cl = wrapper.getClassStruct();
boolean isAnonymous = DecompilerContext.getClassProcessor().getMapRootClasses().get(cl.qualifiedName).type == ClassNode.CLASS_ANONYMOUS;
List<List<Exprent>> lstFirst = new ArrayList<List<Exprent>>();
List<MethodWrapper> lstMethWrappers = new ArrayList<MethodWrapper>();
List<MethodWrapper> lstMethodWrappers = new ArrayList<MethodWrapper>();
for (MethodWrapper meth : wrapper.getMethods()) {
if (CodeConstants.INIT_NAME.equals(meth.methodStruct.getName()) && meth.root != null) { // successfully decompiled constructor
Statement firstdata = findFirstData(meth.root);
if (firstdata == null || firstdata.getExprents().isEmpty()) {
for (MethodWrapper method : wrapper.getMethods()) {
if (CodeConstants.INIT_NAME.equals(method.methodStruct.getName()) && method.root != null) { // successfully decompiled constructor
Statement firstData = Statements.findFirstData(method.root);
if (firstData == null || firstData.getExprents().isEmpty()) {
return;
}
lstFirst.add(firstdata.getExprents());
lstMethWrappers.add(meth);
lstFirst.add(firstData.getExprents());
lstMethodWrappers.add(method);
Exprent exprent = firstdata.getExprents().get(0);
Exprent exprent = firstData.getExprents().get(0);
if (!isAnonymous) { // FIXME: doesn't make sense
if (exprent.type != Exprent.EXPRENT_INVOCATION ||
!isInvocationInitConstructor((InvocationExprent)exprent, meth, wrapper, false)) {
!Statements.isInvocationInitConstructor((InvocationExprent)exprent, method, wrapper, false)) {
return;
}
}
@@ -193,12 +183,10 @@ public class InitializerProcessor {
}
while (true) {
String fieldWithDescr = null;
Exprent value = null;
for (int i = 0; i < lstFirst.size(); i++) {
List<Exprent> lst = lstFirst.get(i);
if (lst.size() < (isAnonymous ? 1 : 2)) {
@@ -210,22 +198,21 @@ public class InitializerProcessor {
boolean found = false;
if (exprent.type == Exprent.EXPRENT_ASSIGNMENT) {
AssignmentExprent asexpr = (AssignmentExprent)exprent;
if (asexpr.getLeft().type == Exprent.EXPRENT_FIELD) {
FieldExprent fexpr = (FieldExprent)asexpr.getLeft();
if (!fexpr.isStatic() && fexpr.getClassname().equals(cl.qualifiedName) &&
cl.hasField(fexpr.getName(), fexpr
.getDescriptor().descriptorString)) { // check for the physical existence of the field. Could be defined in a superclass.
AssignmentExprent assignExpr = (AssignmentExprent)exprent;
if (assignExpr.getLeft().type == Exprent.EXPRENT_FIELD) {
FieldExprent fExpr = (FieldExprent)assignExpr.getLeft();
if (!fExpr.isStatic() && fExpr.getClassname().equals(cl.qualifiedName) &&
cl.hasField(fExpr.getName(), fExpr.getDescriptor().descriptorString)) { // check for the physical existence of the field. Could be defined in a superclass.
if (isExprentIndependent(asexpr.getRight(), lstMethWrappers.get(i))) {
String fieldKey = InterpreterUtil.makeUniqueKey(fexpr.getName(), fexpr.getDescriptor().descriptorString);
if (isExprentIndependent(assignExpr.getRight(), lstMethodWrappers.get(i))) {
String fieldKey = InterpreterUtil.makeUniqueKey(fExpr.getName(), fExpr.getDescriptor().descriptorString);
if (fieldWithDescr == null) {
fieldWithDescr = fieldKey;
value = asexpr.getRight();
value = assignExpr.getRight();
}
else {
if (!fieldWithDescr.equals(fieldKey) ||
!value.equals(asexpr.getRight())) {
!value.equals(assignExpr.getRight())) {
return;
}
}
@@ -253,19 +240,17 @@ public class InitializerProcessor {
}
}
private static boolean isExprentIndependent(Exprent exprent, MethodWrapper meth) {
private static boolean isExprentIndependent(Exprent exprent, MethodWrapper method) {
List<Exprent> lst = exprent.getAllExprents(true);
lst.add(exprent);
for (Exprent expr : lst) {
switch (expr.type) {
case Exprent.EXPRENT_VAR:
VarVersionPair varpaar = new VarVersionPair((VarExprent)expr);
if (!meth.varproc.getExternalVars().contains(varpaar)) {
String varname = meth.varproc.getVarName(varpaar);
if (!varname.equals("this") && !varname.endsWith(".this")) { // FIXME: remove direct comparison with strings
VarVersionPair varPair = new VarVersionPair((VarExprent)expr);
if (!method.varproc.getExternalVars().contains(varPair)) {
String varName = method.varproc.getVarName(varPair);
if (!varName.equals("this") && !varName.endsWith(".this")) { // FIXME: remove direct comparison with strings
return false;
}
}
@@ -277,48 +262,4 @@ public class InitializerProcessor {
return true;
}
private static Statement findFirstData(Statement stat) {
if (stat.getExprents() != null) {
return stat;
}
else {
if (stat.isLabeled()) { // FIXME: Why??
return null;
}
switch (stat.type) {
case Statement.TYPE_SEQUENCE:
case Statement.TYPE_IF:
case Statement.TYPE_ROOT:
case Statement.TYPE_SWITCH:
case Statement.TYPE_SYNCRONIZED:
return findFirstData(stat.getFirst());
default:
return null;
}
}
}
private static boolean isInvocationInitConstructor(InvocationExprent inv, MethodWrapper meth, ClassWrapper wrapper, boolean withThis) {
if (inv.getFunctype() == InvocationExprent.TYP_INIT) {
if (inv.getInstance().type == Exprent.EXPRENT_VAR) {
VarExprent instvar = (VarExprent)inv.getInstance();
VarVersionPair varpaar = new VarVersionPair(instvar);
String classname = meth.varproc.getThisVars().get(varpaar);
if (classname != null) { // any this instance. TODO: Restrict to current class?
if (withThis || !wrapper.getClassStruct().qualifiedName.equals(inv.getClassname())) {
return true;
}
}
}
}
return false;
}
}

60
src/org/jetbrains/java/decompiler/modules/decompiler/stats/Statements.java Normal file
View File

@@ -0,0 +1,60 @@
/*
* Copyright 2000-2016 JetBrains s.r.o.
*
* Licensed under the Apache License, Version 2.0 (the "License");
* you may not use this file except in compliance with the License.
* You may obtain a copy of the License at
*
* http://www.apache.org/licenses/LICENSE-2.0
*
* Unless required by applicable law or agreed to in writing, software
* distributed under the License is distributed on an "AS IS" BASIS,
* WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
* See the License for the specific language governing permissions and
* limitations under the License.
*/
package org.jetbrains.java.decompiler.modules.decompiler.stats;
import org.jetbrains.java.decompiler.main.rels.ClassWrapper;
import org.jetbrains.java.decompiler.main.rels.MethodWrapper;
import org.jetbrains.java.decompiler.modules.decompiler.exps.Exprent;
import org.jetbrains.java.decompiler.modules.decompiler.exps.InvocationExprent;
import org.jetbrains.java.decompiler.modules.decompiler.exps.VarExprent;
import org.jetbrains.java.decompiler.modules.decompiler.vars.VarVersionPair;
public class Statements {
public static Statement findFirstData(Statement stat) {
if (stat.getExprents() != null) {
return stat;
}
else if (stat.isLabeled()) { // FIXME: Why??
return null;
}
switch (stat.type) {
case Statement.TYPE_SEQUENCE:
case Statement.TYPE_IF:
case Statement.TYPE_ROOT:
case Statement.TYPE_SWITCH:
case Statement.TYPE_SYNCRONIZED:
return findFirstData(stat.getFirst());
default:
return null;
}
}
public static boolean isInvocationInitConstructor(InvocationExprent inv, MethodWrapper method, ClassWrapper wrapper, boolean withThis) {
if (inv.getFunctype() == InvocationExprent.TYP_INIT && inv.getInstance().type == Exprent.EXPRENT_VAR) {
VarExprent instVar = (VarExprent)inv.getInstance();
VarVersionPair varPair = new VarVersionPair(instVar);
String classname = method.varproc.getThisVars().get(varPair);
if (classname != null) { // any this instance. TODO: Restrict to current class?
if (withThis || !wrapper.getClassStruct().qualifiedName.equals(inv.getClassname())) {
return true;
}
}
}
return false;
}
}

12
src/org/jetbrains/java/decompiler/util/StructUtils.java
View File

@@ -33,19 +33,14 @@ import static org.jetbrains.java.decompiler.struct.attr.StructGeneralAttribute.A
* @since March 07, 2016
*/
public final class StructUtils {
private StructUtils() {
}
private StructUtils() { }
/**
* @return the local variables of the current method
*/
public static List<String> getCurrentMethodLocalVariableNames() {
final MethodWrapper method = (MethodWrapper) DecompilerContext.getProperty(CURRENT_METHOD_WRAPPER);
if (null == method) {
return Collections.emptyList();
}
return getLocalVariables(method.methodStruct);
return method == null ? Collections.emptyList() : getLocalVariables(method.methodStruct);
}
/**
@@ -56,10 +51,9 @@ public final class StructUtils {
final VBStyleCollection<StructGeneralAttribute, String> methodStruct = structMember.getAttributes();
final StructGeneralAttribute generalAttribute = methodStruct.getWithKey(ATTRIBUTE_LOCAL_VARIABLE_TABLE);
if (generalAttribute instanceof StructLocalVariableTableAttribute) {
final StructLocalVariableTableAttribute table = (StructLocalVariableTableAttribute) generalAttribute;
final StructLocalVariableTableAttribute table = (StructLocalVariableTableAttribute)generalAttribute;
return Collections.unmodifiableList(new ArrayList<>(table.getMapVarNames().values()));
}
return Collections.emptyList();
}
}