use of jadx.core.dex.instructions.args.InsnArg in project jadx by skylot.
the class ModVisitor method replaceStep.
private static void replaceStep(MethodNode mth, InstructionRemover remover) {
ClassNode parentClass = mth.getParentClass();
for (BlockNode block : mth.getBasicBlocks()) {
remover.setBlock(block);
int size = block.getInstructions().size();
for (int i = 0; i < size; i++) {
InsnNode insn = block.getInstructions().get(i);
switch(insn.getType()) {
case INVOKE:
processInvoke(mth, block, i, remover);
break;
case CONST:
case CONST_STR:
case CONST_CLASS:
{
FieldNode f;
if (insn.getType() == InsnType.CONST_STR) {
String s = ((ConstStringNode) insn).getString();
f = parentClass.getConstField(s);
} else if (insn.getType() == InsnType.CONST_CLASS) {
ArgType t = ((ConstClassNode) insn).getClsType();
f = parentClass.getConstField(t);
} else {
f = parentClass.getConstFieldByLiteralArg((LiteralArg) insn.getArg(0));
}
if (f != null) {
InsnNode inode = new IndexInsnNode(InsnType.SGET, f.getFieldInfo(), 0);
inode.setResult(insn.getResult());
replaceInsn(block, i, inode);
}
break;
}
case SWITCH:
SwitchNode sn = (SwitchNode) insn;
for (int k = 0; k < sn.getCasesCount(); k++) {
FieldNode f = parentClass.getConstField(sn.getKeys()[k]);
if (f != null) {
sn.getKeys()[k] = f;
}
}
break;
case NEW_ARRAY:
// create array in 'fill-array' instruction
int next = i + 1;
if (next < size) {
InsnNode ni = block.getInstructions().get(next);
if (ni.getType() == InsnType.FILL_ARRAY) {
ni.getResult().merge(mth.dex(), insn.getResult());
ArgType arrType = ((NewArrayNode) insn).getArrayType();
((FillArrayNode) ni).mergeElementType(mth.dex(), arrType.getArrayElement());
remover.add(insn);
}
}
break;
case FILL_ARRAY:
InsnNode filledArr = makeFilledArrayInsn(mth, (FillArrayNode) insn);
replaceInsn(block, i, filledArr);
break;
case MOVE_EXCEPTION:
processMoveException(mth, block, insn, remover);
break;
case ARITH:
ArithNode arithNode = (ArithNode) insn;
if (arithNode.getArgsCount() == 2) {
InsnArg litArg = arithNode.getArg(1);
if (litArg.isLiteral()) {
FieldNode f = parentClass.getConstFieldByLiteralArg((LiteralArg) litArg);
if (f != null) {
InsnNode fGet = new IndexInsnNode(InsnType.SGET, f.getFieldInfo(), 0);
insn.replaceArg(litArg, InsnArg.wrapArg(fGet));
}
}
}
break;
default:
break;
}
}
remover.perform();
}
}
use of jadx.core.dex.instructions.args.InsnArg in project jadx by skylot.
the class ModVisitor method processAnonymousConstructor.
private static void processAnonymousConstructor(MethodNode mth, ConstructorInsn co) {
MethodInfo callMth = co.getCallMth();
MethodNode callMthNode = mth.dex().resolveMethod(callMth);
if (callMthNode == null) {
return;
}
ClassNode classNode = callMthNode.getParentClass();
ClassInfo classInfo = classNode.getClassInfo();
ClassNode parentClass = mth.getParentClass();
if (!classInfo.isInner() || !Character.isDigit(classInfo.getShortName().charAt(0)) || !parentClass.getInnerClasses().contains(classNode)) {
return;
}
if (!classNode.getAccessFlags().isStatic() && (callMth.getArgsCount() == 0 || !callMth.getArgumentsTypes().get(0).equals(parentClass.getClassInfo().getType()))) {
return;
}
// TODO: calculate this constructor and other constructor usage
Map<InsnArg, FieldNode> argsMap = getArgsToFieldsMapping(callMthNode, co);
if (argsMap.isEmpty()) {
return;
}
// all checks passed
classNode.add(AFlag.ANONYMOUS_CLASS);
callMthNode.add(AFlag.DONT_GENERATE);
for (Map.Entry<InsnArg, FieldNode> entry : argsMap.entrySet()) {
FieldNode field = entry.getValue();
if (field == null) {
continue;
}
InsnArg arg = entry.getKey();
field.addAttr(new FieldReplaceAttr(arg));
field.add(AFlag.DONT_GENERATE);
if (arg.isRegister()) {
RegisterArg reg = (RegisterArg) arg;
SSAVar sVar = reg.getSVar();
if (sVar != null) {
sVar.add(AFlag.FINAL);
sVar.add(AFlag.DONT_INLINE);
}
reg.add(AFlag.SKIP_ARG);
}
}
}
use of jadx.core.dex.instructions.args.InsnArg in project jadx by skylot.
the class PrepareForCodeGen method checkInsn.
/**
* Remove parenthesis for wrapped insn in arith '+' or '-'
* ('(a + b) +c' => 'a + b + c')
*/
private static void checkInsn(InsnNode insn) {
if (insn.getType() == InsnType.ARITH) {
ArithNode arith = (ArithNode) insn;
ArithOp op = arith.getOp();
if (op == ArithOp.ADD || op == ArithOp.SUB) {
for (int i = 0; i < 2; i++) {
InsnArg arg = arith.getArg(i);
if (arg.isInsnWrap()) {
InsnNode wrapInsn = ((InsnWrapArg) arg).getWrapInsn();
wrapInsn.add(AFlag.DONT_WRAP);
checkInsn(wrapInsn);
}
}
}
} else {
for (InsnArg arg : insn.getArguments()) {
if (arg.isInsnWrap()) {
InsnNode wrapInsn = ((InsnWrapArg) arg).getWrapInsn();
checkInsn(wrapInsn);
}
}
}
}
use of jadx.core.dex.instructions.args.InsnArg in project jadx by skylot.
the class PrepareForCodeGen method modifyArith.
/**
* Replace arithmetic operation with short form
* ('a = a + 2' => 'a += 2')
*/
private static void modifyArith(BlockNode block) {
List<InsnNode> list = block.getInstructions();
for (InsnNode insn : list) {
if (insn.getType() == InsnType.ARITH) {
RegisterArg res = insn.getResult();
InsnArg arg = insn.getArg(0);
boolean replace = false;
if (res.equals(arg)) {
replace = true;
} else if (arg.isRegister()) {
RegisterArg regArg = (RegisterArg) arg;
replace = res.equalRegisterAndType(regArg);
}
if (replace) {
insn.add(AFlag.ARITH_ONEARG);
}
}
}
}
use of jadx.core.dex.instructions.args.InsnArg in project jadx by skylot.
the class ReSugarCode method processNewArray.
/**
* Replace new array and sequence of array-put to new filled-array instruction.
*/
private static InsnNode processNewArray(MethodNode mth, List<InsnNode> instructions, int i, InstructionRemover remover) {
NewArrayNode newArrayInsn = (NewArrayNode) instructions.get(i);
InsnArg arg = newArrayInsn.getArg(0);
if (!arg.isLiteral()) {
return null;
}
int len = (int) ((LiteralArg) arg).getLiteral();
int size = instructions.size();
if (len <= 0 || i + len >= size || instructions.get(i + len).getType() != InsnType.APUT) {
return null;
}
ArgType arrType = newArrayInsn.getArrayType();
InsnNode filledArr = new FilledNewArrayNode(arrType.getArrayElement(), len);
filledArr.setResult(newArrayInsn.getResult());
for (int j = 0; j < len; j++) {
InsnNode put = instructions.get(i + 1 + j);
if (put.getType() != InsnType.APUT) {
LOG.debug("Not a APUT in expected new filled array: {}, method: {}", put, mth);
return null;
}
filledArr.addArg(put.getArg(2));
remover.add(put);
}
return filledArr;
}
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