How to create import to CodeQL

Question

I want to create an import to my CodeQL query.
I want that this import will be named Utils and I will created inside it a predicate named isNumber.

How can I creat such import?

This how I want my code to look like:

import cpp
import Utils

where
    if exists(...)
    then isNumber(size.(VariableAccess).getTarget())
    else ...
select ...

I don't know how I create the Utils import, it writes:

Could not resolve module Utils

I tried to create a folder named Utils near my code query (code.ql) but it didn't work.

Answer 1

I found how to do it.
Need to create a file named Utils.qll in the same folder of your CodeQL query.

This is its code:

import cpp

predicate isNumber(Variable v){
    v.getUnspecifiedType() instanceof IntegralType
}