nim-dagger/codex/errors.nim

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Nim

## 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 pkg/stew/results
type
CodexError* = object of CatchableError # base codex error
CodexResult*[T] = Result[T, ref CodexError]
template mapFailure*(
exp: untyped,
exc: typed = type CodexError): untyped =
## Convert `Result[T, E]` to `Result[E, ref CatchableError]`
##
((exp.mapErr do (e: auto) -> ref CatchableError: (ref exc)(msg: $e)))