Break out of Infiltrator

General Usage
,
1

Is there some way to break completely out of Infiltrator’s @infiltrate mode and return to the REPL, not executing any further code? Just like a “stop” button would in most IDEs’ debugging modes.

I see the @exit macro, but that seems to only disable all @infiltrate macros while continuing to execute all the code scheduled to execute.

The closest I’ve come is @exit and then hit Control-C, but that’s very unreliable (sometimes the code isn’t easily stopped with a signal) and sometimes really undesirable (if I know the code is going to do something I really don’t want it to do).

Maybe throwing an exception somehow? A manual error() seems to just give me the infil> prompt again.

2

How about this macro? After @exit, the code asks the user if the program execution should be stopped.

macro my_infiltrate()
    quote
        @infiltrate
        println("Stop execution? [Y/N]")
        response = readline(stdin)
        if lowercase(response[1]) == 'y'
            error("User requested stop.")
        end
    end
end

Test:

julia> function f(x)
           x_plus_1 = x + 1
           @my_infiltrate
           return x_plus_1^2
       end
f (generic function with 1 method)

julia> f(3)
Infiltrating macro expansion
  at REPL[2]:3


infil> x_plus_1
4

infil> @exit

Stop execution? [Y/N]
y
ERROR: User requested stop.
Stacktrace:
 [1] error(s::String)
   @ Base ./error.jl:35
 [2] macro expansion
   @ ./REPL[2]:7 [inlined]
 [3] f(x::Int64)
   @ Main ./REPL[3]:3
 [4] top-level scope
   @ REPL[4]:1
 [5] top-level scope
   @ none:1