Package jadx.core.dex.nodes

Examples of jadx.core.dex.nodes.InsnNode

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      return;
    }
    for (BlockNode block : mth.getBasicBlocks()) {
      List<InsnNode> list = block.getInstructions();
      for (int i = 0; i < list.size(); i++) {
        InsnNode modInsn = simplifyInsn(mth, list.get(i));
        if (modInsn != null) {
          list.set(i, modInsn);
        }
      }
    }
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  }

  private static InsnNode simplifyInsn(MethodNode mth, InsnNode insn) {
    for (InsnArg arg : insn.getArguments()) {
      if (arg.isInsnWrap()) {
        InsnNode ni = simplifyInsn(mth, ((InsnWrapArg) arg).getWrapInsn());
        if (ni != null) {
          arg.wrapInstruction(ni);
        }
      }
    }
    switch (insn.getType()) {
      case ARITH:
        return simplifyArith(insn);

      case IF:
        simplifyIf((IfNode) insn);
        break;
      case TERNARY:
        simplifyTernary((TernaryInsn) insn);
        break;

      case INVOKE:
        return convertInvoke(mth, insn);

      case IPUT:
      case SPUT:
        return convertFieldArith(mth, insn);

      case CHECK_CAST:
        InsnArg castArg = insn.getArg(0);
        ArgType castType = (ArgType) ((IndexInsnNode) insn).getIndex();
        if (!ArgType.isCastNeeded(castArg.getType(), castType)) {
          InsnNode insnNode = new InsnNode(InsnType.MOVE, 1);
          insnNode.setResult(insn.getResult());
          insnNode.addArg(castArg);
          return insnNode;
        }
        break;

      default:
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   * Simplify 'cmp' instruction in if condition
   */
  private static void simplifyIf(IfNode insn) {
    InsnArg f = insn.getArg(0);
    if (f.isInsnWrap()) {
      InsnNode wi = ((InsnWrapArg) f).getWrapInsn();
      if (wi.getType() == InsnType.CMP_L || wi.getType() == InsnType.CMP_G) {
        if (insn.getArg(1).isLiteral()
            && ((LiteralArg) insn.getArg(1)).getLiteral() == 0) {
          insn.changeCondition(insn.getOp(), wi.getArg(0), wi.getArg(1));
        } else {
          LOG.warn("TODO: cmp {}", insn);
        }
      }
    }
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        if (chain.size() > 1 && chain.get(0).getType() == InsnType.CONSTRUCTOR) {
          ConstructorInsn constr = (ConstructorInsn) chain.get(0);
          if (constr.getClassType().getFullName().equals(Consts.CLASS_STRING_BUILDER)
              && constr.getArgsCount() == 0) {
            int len = chain.size();
            InsnNode concatInsn = new InsnNode(InsnType.STR_CONCAT, len - 1);
            for (int i = 1; i < len; i++) {
              concatInsn.addArg(chain.get(i).getArg(1));
            }
            concatInsn.setResult(insn.getResult());
            return concatInsn;
          }
        }
      } catch (Throwable e) {
        LOG.debug("Can't convert string concatenation: {} insn: {}", mth, insn, e);
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      return null;
    }
    InsnArg litArg = null;
    InsnArg secondArg = arith.getArg(1);
    if (secondArg.isInsnWrap()) {
      InsnNode wr = ((InsnWrapArg) secondArg).getWrapInsn();
      if (wr.getType() == InsnType.CONST) {
        litArg = wr.getArg(0);
      }
    } else if (secondArg.isLiteral()) {
      litArg = secondArg;
    }
    if (litArg != null) {
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  private static InsnNode convertFieldArith(MethodNode mth, InsnNode insn) {
    InsnArg arg = insn.getArg(0);
    if (!arg.isInsnWrap()) {
      return null;
    }
    InsnNode wrap = ((InsnWrapArg) arg).getWrapInsn();
    InsnType wrapType = wrap.getType();
    if ((wrapType != InsnType.ARITH && wrapType != InsnType.STR_CONCAT)
        || !wrap.getArg(0).isInsnWrap()) {
      return null;
    }
    InsnNode get = ((InsnWrapArg) wrap.getArg(0)).getWrapInsn();
    InsnType getType = get.getType();
    if (getType != InsnType.IGET && getType != InsnType.SGET) {
      return null;
    }
    FieldInfo field = (FieldInfo) ((IndexInsnNode) insn).getIndex();
    FieldInfo innerField = (FieldInfo) ((IndexInsnNode) get).getIndex();
    if (!field.equals(innerField)) {
      return null;
    }
    try {
      InsnArg reg = null;
      if (getType == InsnType.IGET) {
        reg = get.getArg(0);
      }
      FieldArg fArg = new FieldArg(field, reg);
      if (reg != null) {
        fArg.setType(get.getArg(0).getType());
      }
      if (wrapType == InsnType.ARITH) {
        ArithNode ar = (ArithNode) wrap;
        return new ArithNode(ar.getOp(), fArg, ar.getArg(1));
      } else {
        int argsCount = wrap.getArgsCount();
        InsnNode concat = new InsnNode(InsnType.STR_CONCAT, argsCount - 1);
        for (int i = 1; i < argsCount; i++) {
          concat.addArg(wrap.getArg(i));
        }
        return new ArithNode(ArithOp.ADD, fArg, InsnArg.wrapArg(concat));
      }
    } catch (Throwable e) {
      LOG.debug("Can't convert field arith insn: {}, mth: {}", insn, mth, e);
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  private static List<InsnNode> flattenInsnChain(InsnNode insn) {
    List<InsnNode> chain = new ArrayList<InsnNode>();
    InsnArg i = insn.getArg(0);
    while (i.isInsnWrap()) {
      InsnNode wrapInsn = ((InsnWrapArg) i).getWrapInsn();
      chain.add(wrapInsn);
      if (wrapInsn.getArgsCount() == 0) {
        break;
      }

      i = wrapInsn.getArg(0);
    }
    Collections.reverse(chain);
    return chain;
  }
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        SSAVar sVar = arg.getSVar();
        // allow inline only one use arg or 'this'
        if (sVar.getVariableUseCount() != 1 && !arg.isThis()) {
          continue;
        }
        InsnNode assignInsn = sVar.getAssign().getParentInsn();
        if (assignInsn == null || assignInsn.contains(AFlag.DONT_INLINE)) {
          continue;
        }
        int assignPos = insnList.getIndex(assignInsn);
        if (assignPos != -1) {
          WrapInfo wrapInfo = argsInfo.checkInline(assignPos, arg);
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    throw new JadxRuntimeException("Can't process instruction move : " + assignBlock);
  }

  @Deprecated
  public static InsnArg inlineArgument(MethodNode mth, RegisterArg arg) {
    InsnNode assignInsn = arg.getAssignInsn();
    if (assignInsn == null) {
      return null;
    }
    // recursively wrap all instructions
    List<RegisterArg> list = new ArrayList<RegisterArg>();
    List<RegisterArg> args = mth.getArguments(false);
    int i = 0;
    do {
      list.clear();
      assignInsn.getRegisterArgs(list);
      for (RegisterArg rarg : list) {
        InsnNode ai = rarg.getAssignInsn();
        if (ai != assignInsn && ai != null && ai != rarg.getParentInsn()) {
          rarg.wrapInstruction(ai);
        }
      }
      // remove method args
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      for (int i = start; i < to; i++) {
        ArgsInfo argsInfo = argsList.get(i);
        if (argsInfo.getInlinedInsn() == this) {
          continue;
        }
        InsnNode curInsn = argsInfo.insn;
        if (!curInsn.canReorder() || usedArgAssign(curInsn, movedSet)) {
          return false;
        }
      }
      return true;
    }
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Related Classes of jadx.core.dex.nodes.InsnNode

  • jadx.core.codegen.ConditionGen
  • jadx.core.codegen.InsnGen
  • jadx.core.codegen.NameGen
  • jadx.core.codegen.RegionGen
  • jadx.core.dex.instructions.args.InsnArg
  • jadx.core.dex.instructions.args.RegisterArg
  • jadx.core.dex.instructions.InsnDecoder
  • jadx.core.dex.nodes.parser.DebugInfoParser
  • jadx.core.dex.regions.conditions.IfCondition
  • jadx.core.dex.regions.loops.LoopRegion
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