You can not select more than 25 topics
Topics must start with a letter or number, can include dashes ('-') and can be up to 35 characters long.
322 lines
10 KiB
322 lines
10 KiB
11 years ago
|
/*
|
||
|
|
* Fernflower - The Analytical Java Decompiler
|
||
|
|
* http://www.reversed-java.com
|
||
|
|
*
|
||
|
|
* (C) 2008 - 2010, Stiver
|
||
|
|
*
|
||
|
|
* This software is NEITHER public domain NOR free software
|
||
|
|
* as per GNU License. See license.txt for more details.
|
||
|
|
*
|
||
|
|
* This software is distributed WITHOUT ANY WARRANTY; without
|
||
|
|
* even the implied warranty of MERCHANTABILITY or FITNESS FOR
|
||
|
|
* A PARTICULAR PURPOSE.
|
||
|
|
*/
|
||
|
|
|
||
10 years ago
|
package org.jetbrains.java.decompiler.main;
|
||
|
11 years ago
|
|
||
|
|
import java.util.ArrayList;
|
||
|
|
import java.util.List;
|
||
|
|
|
||
|
10 years ago
|
import org.jetbrains.java.decompiler.code.CodeConstants;
|
||
|
|
import org.jetbrains.java.decompiler.main.ClassesProcessor.ClassNode;
|
||
|
|
import org.jetbrains.java.decompiler.main.extern.IFernflowerPreferences;
|
||
|
|
import org.jetbrains.java.decompiler.main.rels.ClassWrapper;
|
||
|
|
import org.jetbrains.java.decompiler.main.rels.MethodWrapper;
|
||
|
|
import org.jetbrains.java.decompiler.modules.decompiler.exps.AssignmentExprent;
|
||
|
|
import org.jetbrains.java.decompiler.modules.decompiler.exps.Exprent;
|
||
|
|
import org.jetbrains.java.decompiler.modules.decompiler.exps.FieldExprent;
|
||
|
|
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.RootStatement;
|
||
|
|
import org.jetbrains.java.decompiler.modules.decompiler.stats.Statement;
|
||
|
|
import org.jetbrains.java.decompiler.modules.decompiler.vars.VarVersionPaar;
|
||
|
|
import org.jetbrains.java.decompiler.struct.StructClass;
|
||
|
|
import org.jetbrains.java.decompiler.struct.StructField;
|
||
|
|
import org.jetbrains.java.decompiler.util.InterpreterUtil;
|
||
|
11 years ago
|
|
||
|
|
|
||
|
|
public class InitializerProcessor {
|
||
|
|
|
||
|
|
public static void extractInitializers(ClassWrapper wrapper) {
|
||
|
|
|
||
|
|
MethodWrapper meth = wrapper.getMethodWrapper("<clinit>", "()V");
|
||
|
|
if(meth != null && meth.root != null) { // successfully decompiled static constructor
|
||
|
|
extractStaticInitializers(wrapper, meth);
|
||
|
|
}
|
||
|
|
|
||
|
|
extractDynamicInitializers(wrapper);
|
||
|
|
|
||
|
|
// required e.g. if anonymous class is being decompiled as a standard one.
|
||
|
|
// This can happen if InnerClasses attributes are erased
|
||
|
|
liftConstructor(wrapper);
|
||
|
|
|
||
|
|
if(DecompilerContext.getOption(IFernflowerPreferences.HIDE_EMPTY_SUPER)) {
|
||
|
|
hideEmptySuper(wrapper);
|
||
|
|
}
|
||
|
|
}
|
||
|
|
|
||
|
|
|
||
|
|
private static void liftConstructor(ClassWrapper wrapper) {
|
||
|
|
|
||
|
|
for(MethodWrapper meth : wrapper.getMethods()) {
|
||
|
|
if("<init>".equals(meth.methodStruct.getName()) && meth.root != null) {
|
||
|
|
Statement firstdata = findFirstData(meth.root);
|
||
|
|
if(firstdata == null) {
|
||
|
|
return;
|
||
|
|
}
|
||
|
|
|
||
|
|
|
||
|
|
int index = 0;
|
||
|
|
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);
|
||
|
|
if(structField != null && (structField.access_flags & CodeConstants.ACC_FINAL) != 0) {
|
||
|
|
action = 1;
|
||
|
|
}
|
||
|
|
}
|
||
|
|
}
|
||
|
|
} else if(index > 0 && exprent.type == Exprent.EXPRENT_INVOCATION &&
|
||
|
|
isInvocationInitConstructor((InvocationExprent)exprent, meth, wrapper, true)) {
|
||
|
|
// this() or super()
|
||
|
|
lstExprents.add(0, lstExprents.remove(index));
|
||
|
|
action = 2;
|
||
|
|
}
|
||
|
|
|
||
|
|
if(action != 1) {
|
||
|
|
break;
|
||
|
|
}
|
||
|
|
|
||
|
|
index++;
|
||
|
|
}
|
||
|
|
}
|
||
|
|
}
|
||
|
|
}
|
||
|
|
|
||
|
|
|
||
|
|
private static void hideEmptySuper(ClassWrapper wrapper) {
|
||
|
|
|
||
|
|
for(MethodWrapper meth : wrapper.getMethods()) {
|
||
|
|
if("<init>".equals(meth.methodStruct.getName()) && meth.root != null) {
|
||
|
|
Statement firstdata = findFirstData(meth.root);
|
||
|
|
if(firstdata == null || firstdata.getExprents().isEmpty()) {
|
||
|
|
return;
|
||
|
|
}
|
||
|
|
|
||
|
|
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);
|
||
|
|
}
|
||
|
|
}
|
||
|
|
}
|
||
|
|
}
|
||
|
|
}
|
||
|
|
|
||
|
|
private static void extractStaticInitializers(ClassWrapper wrapper, MethodWrapper meth) {
|
||
|
|
|
||
|
|
RootStatement root = meth.root;
|
||
|
|
StructClass cl = wrapper.getClassStruct();
|
||
|
|
|
||
|
|
Statement firstdata = findFirstData(root);
|
||
|
|
if(firstdata != null) {
|
||
|
|
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();
|
||
|
10 years ago
|
if(fexpr.isStatic() && fexpr.getClassname().equals(cl.qualifiedName) &&
|
||
|
|
cl.hasField(fexpr.getName(), fexpr.getDescriptor().descriptorString)) {
|
||
|
|
|
||
|
|
if(isExprentIndependent(asexpr.getRight(), meth)) {
|
||
|
|
|
||
|
|
String keyField = InterpreterUtil.makeUniqueKey(fexpr.getName(), fexpr.getDescriptor().descriptorString);
|
||
|
|
if(!wrapper.getStaticFieldInitializers().containsKey(keyField)) {
|
||
|
|
wrapper.getStaticFieldInitializers().addWithKey(asexpr.getRight(), keyField);
|
||
|
|
firstdata.getExprents().remove(0);
|
||
|
|
found = true;
|
||
|
|
}
|
||
|
11 years ago
|
}
|
||
|
|
}
|
||
|
|
}
|
||
|
|
}
|
||
|
|
|
||
|
|
if(!found) {
|
||
|
|
break;
|
||
|
|
}
|
||
|
|
}
|
||
|
|
}
|
||
|
|
}
|
||
|
|
|
||
|
|
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>();
|
||
|
|
|
||
|
|
for(MethodWrapper meth : wrapper.getMethods()) {
|
||
|
|
if("<init>".equals(meth.methodStruct.getName()) && meth.root != null) { // successfully decompiled constructor
|
||
|
|
Statement firstdata = findFirstData(meth.root);
|
||
|
|
if(firstdata == null || firstdata.getExprents().isEmpty()) {
|
||
|
|
return;
|
||
|
|
}
|
||
|
|
lstFirst.add(firstdata.getExprents());
|
||
|
|
lstMethWrappers.add(meth);
|
||
|
|
|
||
|
|
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)) {
|
||
|
|
return;
|
||
|
|
}
|
||
|
|
}
|
||
|
|
}
|
||
|
|
}
|
||
|
|
|
||
|
|
if(lstFirst.isEmpty()) {
|
||
|
|
return;
|
||
|
|
}
|
||
|
|
|
||
|
|
for(;;) {
|
||
|
|
|
||
|
|
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)) {
|
||
|
|
return;
|
||
|
|
}
|
||
|
|
|
||
|
|
Exprent exprent = lst.get(isAnonymous?0:1);
|
||
|
|
|
||
|
|
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();
|
||
|
10 years ago
|
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.
|
||
|
|
|
||
|
11 years ago
|
if(isExprentIndependent(asexpr.getRight(), lstMethWrappers.get(i))) {
|
||
|
|
String fieldKey = InterpreterUtil.makeUniqueKey(fexpr.getName(), fexpr.getDescriptor().descriptorString);
|
||
|
|
if(fieldWithDescr == null) {
|
||
|
|
fieldWithDescr = fieldKey;
|
||
|
|
value = asexpr.getRight();
|
||
|
|
} else {
|
||
|
|
if(!fieldWithDescr.equals(fieldKey) ||
|
||
|
|
!value.equals(asexpr.getRight())) {
|
||
|
|
return;
|
||
|
|
}
|
||
|
|
}
|
||
|
|
found = true;
|
||
|
|
}
|
||
|
|
}
|
||
|
|
}
|
||
|
|
}
|
||
|
|
|
||
|
|
if(!found) {
|
||
|
|
return;
|
||
|
|
}
|
||
|
|
}
|
||
|
|
|
||
|
|
if(!wrapper.getDynamicFieldInitializers().containsKey(fieldWithDescr)) {
|
||
|
|
wrapper.getDynamicFieldInitializers().addWithKey(value, fieldWithDescr);
|
||
|
|
|
||
|
|
for(List<Exprent> lst : lstFirst) {
|
||
|
|
lst.remove(isAnonymous?0:1);
|
||
|
|
}
|
||
|
|
} else {
|
||
|
|
return;
|
||
|
|
}
|
||
|
|
}
|
||
|
|
|
||
|
|
}
|
||
|
|
|
||
|
|
private static boolean isExprentIndependent(Exprent exprent, MethodWrapper meth) {
|
||
|
|
|
||
|
|
List<Exprent> lst = exprent.getAllExprents(true);
|
||
|
|
lst.add(exprent);
|
||
|
|
|
||
|
|
for(Exprent expr : lst) {
|
||
|
|
switch(expr.type) {
|
||
|
|
case Exprent.EXPRENT_VAR:
|
||
|
|
VarVersionPaar varpaar = new VarVersionPaar((VarExprent)expr);
|
||
|
|
if(!meth.varproc.getExternvars().contains(varpaar)) {
|
||
|
|
String varname = meth.varproc.getVarName(varpaar);
|
||
|
|
|
||
|
|
if(!varname.equals("this") && !varname.endsWith(".this")) { // FIXME: remove direct comparison with strings
|
||
|
|
return false;
|
||
|
|
}
|
||
|
|
}
|
||
|
|
break;
|
||
|
|
case Exprent.EXPRENT_FIELD:
|
||
|
|
return false;
|
||
|
|
}
|
||
|
|
}
|
||
|
|
|
||
|
|
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();
|
||
|
|
VarVersionPaar varpaar = new VarVersionPaar(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;
|
||
|
|
}
|
||
|
|
}
|