Module `Effect.Shallow`

type ('a, 'b) continuation

('a,'b) continuation is a delimited continuation that expects a 'a value and returns a 'b value.

val fiber : ('a -> 'b) -> ('a, 'b) Stdlib.Effect.Shallow.continuation

fiber f constructs a continuation that runs the computation f.

raises Out_of_fibers
if unable to allocate a fiber.

type ('a, 'b) handler = {

retc : 'a -> 'b;
exnc : exn -> 'b;
effc : 'c. 'c Stdlib.Effect.t -> (('c, 'a) Stdlib.Effect.Shallow.continuation -> 'b) option;

}

('a,'b) handler is a handler record with three fields -- retc is the value handler, exnc handles exceptions, and effc handles the effects performed by the computation enclosed by the handler.

val continue_with : 
  ('c, 'a) Stdlib.Effect.Shallow.continuation ->
  'c ->
  ('a, 'b) Stdlib.Effect.Shallow.handler ->
  'b

continue_with k v h resumes the continuation k with value v with the handler h.

raises Continuation_already_resumed
if the continuation has already been resumed.

val discontinue_with : 
  ('c, 'a) Stdlib.Effect.Shallow.continuation ->
  exn ->
  ('a, 'b) Stdlib.Effect.Shallow.handler ->
  'b

discontinue_with k e h resumes the continuation k by raising the exception e with the handler h.

raises Continuation_already_resumed
if the continuation has already been resumed.

val discontinue_with_backtrace : 
  ('a, 'b) Stdlib.Effect.Shallow.continuation ->
  exn ->
  Stdlib.Printexc.raw_backtrace ->
  ('b, 'c) Stdlib.Effect.Shallow.handler ->
  'c

discontinue_with k e bt h resumes the continuation k by raising the exception e with the handler h using the raw backtrace bt as the origin of the exception.

raises Continuation_already_resumed
if the continuation has already been resumed.

val get_callstack : 
  ('a, 'b) Stdlib.Effect.Shallow.continuation ->
  int ->
  Stdlib.Printexc.raw_backtrace

get_callstack c n returns a description of the top of the call stack on the continuation c, with at most n entries.

Module Effect.Shallow

Module `Effect.Shallow`