From a8184a2ee0c9987e618141c0c52f9110b927ea0b Mon Sep 17 00:00:00 2001 From: Nathan van Doorn Date: Sat, 13 Jun 2020 15:10:07 +0100 Subject: [PATCH] Add KnownStatus typeclass --- servant/servant.cabal | 1 + servant/src/Servant/API/Status.hs | 153 ++++++++++++++++++++++++++++++ 2 files changed, 154 insertions(+) create mode 100644 servant/src/Servant/API/Status.hs diff --git a/servant/servant.cabal b/servant/servant.cabal index 2d42c310..bf540e25 100644 --- a/servant/servant.cabal +++ b/servant/servant.cabal @@ -55,6 +55,7 @@ library Servant.API.RemoteHost Servant.API.ReqBody Servant.API.ResponseHeaders + Servant.API.Status Servant.API.Stream Servant.API.Sub Servant.API.TypeLevel diff --git a/servant/src/Servant/API/Status.hs b/servant/src/Servant/API/Status.hs new file mode 100644 index 00000000..8f80938d --- /dev/null +++ b/servant/src/Servant/API/Status.hs @@ -0,0 +1,153 @@ +{-# LANGUAGE DataKinds #-} +module Servant.API.Status where + +import Network.HTTP.Types.Status +import GHC.TypeNats + +-- | Witness that a type-level natural number corresponds to a HTTP status code +class KnownNat n => KnownStatus n where + statusVal :: proxy n -> Status + +instance KnownStatus 100 where + statusVal _ = status100 + +instance KnownStatus 101 where + statusVal _ = status101 + +instance KnownStatus 200 where + statusVal _ = status200 + +instance KnownStatus 201 where + statusVal _ = status201 + +instance KnownStatus 202 where + statusVal _ = status202 + +instance KnownStatus 203 where + statusVal _ = status203 + +instance KnownStatus 204 where + statusVal _ = status204 + +instance KnownStatus 205 where + statusVal _ = status205 + +instance KnownStatus 206 where + statusVal _ = status206 + +instance KnownStatus 300 where + statusVal _ = status300 + +instance KnownStatus 301 where + statusVal _ = status301 + +instance KnownStatus 302 where + statusVal _ = status302 + +instance KnownStatus 303 where + statusVal _ = status303 + +instance KnownStatus 304 where + statusVal _ = status304 + +instance KnownStatus 305 where + statusVal _ = status305 + +instance KnownStatus 307 where + statusVal _ = status307 + +instance KnownStatus 308 where + statusVal _ = status308 + +instance KnownStatus 400 where + statusVal _ = status400 + +instance KnownStatus 401 where + statusVal _ = status401 + +instance KnownStatus 402 where + statusVal _ = status402 + +instance KnownStatus 403 where + statusVal _ = status403 + +instance KnownStatus 404 where + statusVal _ = status404 + +instance KnownStatus 405 where + statusVal _ = status405 + +instance KnownStatus 406 where + statusVal _ = status406 + +instance KnownStatus 407 where + statusVal _ = status407 + +instance KnownStatus 408 where + statusVal _ = status408 + +instance KnownStatus 409 where + statusVal _ = status409 + +instance KnownStatus 410 where + statusVal _ = status410 + +instance KnownStatus 411 where + statusVal _ = status411 + +instance KnownStatus 412 where + statusVal _ = status412 + +instance KnownStatus 413 where + statusVal _ = status413 + +instance KnownStatus 414 where + statusVal _ = status414 + +instance KnownStatus 415 where + statusVal _ = status415 + +instance KnownStatus 416 where + statusVal _ = status416 + +instance KnownStatus 417 where + statusVal _ = status417 + +instance KnownStatus 418 where + statusVal _ = status418 + +instance KnownStatus 422 where + statusVal _ = status422 + +instance KnownStatus 426 where + statusVal _ = status426 + +instance KnownStatus 428 where + statusVal _ = status428 + +instance KnownStatus 429 where + statusVal _ = status429 + +instance KnownStatus 431 where + statusVal _ = status431 + +instance KnownStatus 500 where + statusVal _ = status500 + +instance KnownStatus 501 where + statusVal _ = status501 + +instance KnownStatus 502 where + statusVal _ = status502 + +instance KnownStatus 503 where + statusVal _ = status503 + +instance KnownStatus 504 where + statusVal _ = status504 + +instance KnownStatus 505 where + statusVal _ = status505 + +instance KnownStatus 511 where + statusVal _ = status511