Re: Python's pdb module

[Matt Wette]

On 4/29/21 8:26 PM, Tim Meehan wrote:
> Is there something in Guile that is similar to Python's "pdb" module?
> For instance, sometimes I find it helpful to pause right before something
> bad happens with:
>
> #!/usr/bin/env python3
> import pdb; pdb.set_trace()
> some_function_that_is_going_to_fail_miserably()

I started on something years ago but never got it working as nice as python,
as the guile debugger still needs some help to get there.   Try this 
snippet.

(define-syntax-rule (jump-to-debugger)
  (if (eqv? 'regular (vm-engine))
      (give-warning)
      (start-repl
       #:debug (make-debug (stack->vector (make-stack #t)) 0 "trap!" #t))))

You'll need some of this mess to resolve procedures:

(use-modules (system repl repl))
(use-modules (system repl debug))
(use-modules (system repl common))
(use-modules (system repl command))
(use-modules (system vm frame))
(use-modules (system vm vm))
(use-modules (ice-9 control))
(use-modules (ice-9 rdelim))
(use-modules (ice-9 pretty-print))
(use-modules (system base compile))

Matt