Examples with InsnWrapArg jadx.core.dex.instructions.args.InsnWrapArg used on opensource projects

Example 6 with InsnWrapArg

use of jadx.core.dex.instructions.args.InsnWrapArg in project jadx by skylot.

the class CodeShrinker method simplifyMoveInsns.

private static void simplifyMoveInsns(BlockNode block) {
    List<InsnNode> insns = block.getInstructions();
    int size = insns.size();
    for (int i = 0; i < size; i++) {
        InsnNode insn = insns.get(i);
        if (insn.getType() == InsnType.MOVE) {
            // replace 'move' with wrapped insn
            InsnArg arg = insn.getArg(0);
            if (arg.isInsnWrap()) {
                InsnNode wrapInsn = ((InsnWrapArg) arg).getWrapInsn();
                wrapInsn.setResult(insn.getResult());
                wrapInsn.copyAttributesFrom(insn);
                wrapInsn.setOffset(insn.getOffset());
                wrapInsn.remove(AFlag.WRAPPED);
                block.getInstructions().set(i, wrapInsn);
            }
        }
    }
}

Example 7 with InsnWrapArg

use of jadx.core.dex.instructions.args.InsnWrapArg in project jadx by skylot.

the class SimplifyVisitor method simplifyArith.

private static InsnNode simplifyArith(InsnNode insn) {
    ArithNode arith = (ArithNode) insn;
    if (arith.getArgsCount() != 2) {
        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) {
        long lit = ((LiteralArg) litArg).getLiteral();
        // fix 'c + (-1)' => 'c - (1)'
        if (arith.getOp() == ArithOp.ADD && lit < 0) {
            return new ArithNode(ArithOp.SUB, arith.getResult(), insn.getArg(0), InsnArg.lit(-lit, litArg.getType()));
        }
    }
    return null;
}

Example 8 with InsnWrapArg

use of jadx.core.dex.instructions.args.InsnWrapArg in project jadx by skylot.

the class SimplifyVisitor method convertInvoke.

private static InsnNode convertInvoke(MethodNode mth, InsnNode insn) {
    MethodInfo callMth = ((InvokeNode) insn).getCallMth();
    // convert it to STRING_CONCAT pseudo instruction.
    if (callMth.getDeclClass().getFullName().equals(Consts.CLASS_STRING_BUILDER) && callMth.getShortId().equals(Consts.MTH_TOSTRING_SIGNATURE) && insn.getArg(0).isInsnWrap()) {
        try {
            List<InsnNode> chain = flattenInsnChain(insn);
            //RAF
            int constrIndex = -1;
            // string is created using .append() calls:
            if (chain.size() > 1 && chain.get(0).getType() == InsnType.CONSTRUCTOR) {
                constrIndex = 0;
            } else if (chain.size() > 2 && chain.get(1).getType() == InsnType.CONSTRUCTOR) {
                //RAF Case where the first string element is String arg to the
                // new StringBuilder("xxx") constructor
                constrIndex = 1;
            } else if (chain.size() > 3 && chain.get(2).getType() == InsnType.CONSTRUCTOR) {
                //RAF Case where the first string element is String.valueOf() arg
                // to the new StringBuilder(String.valueOf(zzz)) constructor
                constrIndex = 2;
            }
            if (constrIndex != -1) {
                // If we found a CONSTRUCTOR, is it a StringBuilder?
                ConstructorInsn constr = (ConstructorInsn) chain.get(constrIndex);
                if (constr.getClassType().getFullName().equals(Consts.CLASS_STRING_BUILDER)) {
                    int len = chain.size(), argInd = 1;
                    InsnNode concatInsn = new InsnNode(InsnType.STR_CONCAT, len - 1);
                    InsnNode argInsn;
                    if (constrIndex > 0) {
                        // There was an arg to the StringBuilder constr
                        InsnWrapArg iwa;
                        if (constrIndex == 2 && (argInsn = chain.get(1)).getType() == InsnType.INVOKE && ((InvokeNode) argInsn).getCallMth().getName().compareTo("valueOf") == 0) {
                            // The argument of new StringBuilder() is a String.valueOf(chainElement0)
                            iwa = (InsnWrapArg) argInsn.getArg(0);
                            // Cause for loop below to skip to after the constructor
                            argInd = 3;
                        } else {
                            InsnNode firstNode = chain.get(0);
                            if (firstNode instanceof ConstStringNode) {
                                ConstStringNode csn = (ConstStringNode) firstNode;
                                iwa = new InsnWrapArg(csn);
                                // Cause for loop below to skip to after the constructor
                                argInd = 2;
                            } else {
                                return null;
                            }
                        }
                        concatInsn.addArg(iwa);
                    }
                    for (; argInd < len; argInd++) {
                        // Add the .append(xxx) arg string to concat
                        concatInsn.addArg(chain.get(argInd).getArg(1));
                    }
                    concatInsn.setResult(insn.getResult());
                    return concatInsn;
                }
            // end of if constructor is for StringBuilder
            }
        // end of if we found a constructor early in the chain
        } catch (Throwable e) {
            LOG.debug("Can't convert string concatenation: {} insn: {}", mth, insn, e);
        }
    }
    return null;
}

Example 9 with InsnWrapArg

use of jadx.core.dex.instructions.args.InsnWrapArg 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);
            }
        }
    }
}

Example 10 with InsnWrapArg

use of jadx.core.dex.instructions.args.InsnWrapArg in project jadx by skylot.

the class PrepareForCodeGen method checkInline.

private static void checkInline(BlockNode block) {
    List<InsnNode> list = block.getInstructions();
    for (int i = 0; i < list.size(); i++) {
        InsnNode insn = list.get(i);
        // replace 'move' with inner wrapped instruction
        if (insn.getType() == InsnType.MOVE && insn.getArg(0).isInsnWrap()) {
            InsnNode wrapInsn = ((InsnWrapArg) insn.getArg(0)).getWrapInsn();
            wrapInsn.setResult(insn.getResult());
            wrapInsn.copyAttributesFrom(insn);
            list.set(i, wrapInsn);
        }
    }
}