Examples with ArithNode jadx.core.dex.instructions.ArithNode used on opensource projects

Example 6 with ArithNode

use of jadx.core.dex.instructions.ArithNode in project jadx by skylot.

the class SimplifyVisitor method convertFieldArith.

/**
	 * Convert field arith operation to arith instruction
	 * (IPUT = ARITH (IGET, lit) -> ARITH (fieldArg <op>= lit))
	 */
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);
            InsnArg putReg = insn.getArg(1);
            if (!reg.equals(putReg)) {
                return null;
            }
        }
        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 (Exception e) {
        LOG.debug("Can't convert field arith insn: {}, mth: {}", insn, mth, e);
    }
    return null;
}