gas_monad.ml
(*****************************************************************************)
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open Alpha_context
(* The outer [tzresult] is for gas exhaustion only. The inner [result] is for all
other (non-gas) errors. *)
type ('a, 'trace) t = context -> (('a, 'trace) result * context) tzresult
type ('a, 'trace) gas_monad = ('a, 'trace) t
let of_result x ctxt = ok (x, ctxt)
let return x = of_result (ok x)
let ( >>$ ) m f ctxt =
m ctxt >>? fun (x, ctxt) ->
match x with Ok y -> f y ctxt | Error _ as err -> of_result err ctxt
let ( >|$ ) m f ctxt = m ctxt >>? fun (x, ctxt) -> of_result (x >|? f) ctxt
let ( >?$ ) m f = m >>$ fun x -> of_result (f x)
let ( >??$ ) m f ctxt = m ctxt >>? fun (x, ctxt) -> f x ctxt
let consume_gas cost ctxt = Gas.consume ctxt cost >>? return ()
let run ctxt x = x ctxt
let record_trace_eval f m ctxt =
m ctxt >>? fun (x, ctxt) -> of_result (record_trace_eval f x) ctxt