## Nim-Codex
## Copyright (c) 2021 Status Research & Development GmbH
## Licensed under either of
## * Apache License, version 2.0, ([LICENSE-APACHE](LICENSE-APACHE))
## * MIT license ([LICENSE-MIT](LICENSE-MIT))
## at your option.
## This file may not be copied, modified, or distributed except according to
## those terms.
import std/options
import pkg/stew/results
import pkg/chronos
import pkg/questionable/results
export results
type
CodexError* = object of CatchableError # base codex error
CodexResult*[T] = Result[T, ref CodexError]
template mapFailure*[T, V, E](
exp: Result[T, V],
exc: typedesc[E],
): Result[T, ref CatchableError] =
## Convert `Result[T, E]` to `Result[E, ref CatchableError]`
##
exp.mapErr(proc (e: V): ref CatchableError = (ref exc)(msg: $e))
template mapFailure*[T, V](exp: Result[T, V]): Result[T, ref CatchableError] =
mapFailure(exp, CodexError)
# TODO: using a template here, causes bad codegen
func toFailure*[T](exp: Option[T]): Result[T, ref CatchableError] {.inline.} =
if exp.isSome:
success exp.get
else:
T.failure("Option is None")
proc allFutureResult*[T](fut: seq[Future[T]]): Future[?!void] {.async.} =
try:
await allFuturesThrowing(fut)
except CancelledError as exc:
raise exc
except CatchableError as exc:
return failure(exc.msg)
return success()
