ema-extra (empty) → 0.10.0.0
raw patch · 10 files changed
+1322/−0 lines, 10 filesdep +basedep +containersdep +data-default
Dependencies added: base, containers, data-default, dependent-sum, ema, ema-generics, filepath, generics-sop, monad-logger, optics-core, pandoc, relude, sop-core, text, time, unionmount, unliftio, url-slug
Files
- CHANGELOG.md +5/−0
- LICENSE +661/−0
- README.md +3/−0
- ema-extra.cabal +111/−0
- src/Ema/Route/Lib/Extra/MapRoute.hs +57/−0
- src/Ema/Route/Lib/Extra/PaginatedRoute.hs +105/−0
- src/Ema/Route/Lib/Extra/PandocRoute.hs +198/−0
- src/Ema/Route/Lib/Extra/SlugRoute.hs +40/−0
- src/Ema/Route/Lib/Extra/StaticRoute.hs +111/−0
- src/Ema/Route/Lib/Extra/StringRoute.hs +31/−0
+ CHANGELOG.md view
@@ -0,0 +1,5 @@+# Revision history for ema-extra++## 0.10.0.0 (2022-11-20)++- Split from `ema` package
+ LICENSE view
@@ -0,0 +1,661 @@+ GNU AFFERO GENERAL PUBLIC LICENSE+ Version 3, 19 November 2007++ Copyright (C) 2007 Free Software Foundation, Inc. <https://fsf.org/>+ Everyone is permitted to copy and distribute verbatim copies+ of this license document, but changing it is not allowed.++ Preamble++ The GNU Affero General Public License is a free, copyleft license for+software and other kinds of works, specifically designed to ensure+cooperation with the community in the case of network server software.++ The licenses for most software and other practical works are designed+to take away your freedom to share and change the works. By contrast,+our General Public Licenses are intended to guarantee your freedom to+share and change all versions of a program--to make sure it remains free+software for all its users.++ When we speak of free software, we are referring to freedom, not+price. 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+ README.md view
@@ -0,0 +1,3 @@+# ema-extra++Useful route types for [Ema](https://ema.srid.ca/)
+ ema-extra.cabal view
@@ -0,0 +1,111 @@+cabal-version: 2.4+name: ema-extra+version: 0.10.0.0+license: AGPL-3.0-only+copyright: 2022 Sridhar Ratnakumar+maintainer: srid@srid.ca+author: Sridhar Ratnakumar+category: Web+synopsis: Useful route types for Ema+bug-reports: https://github.com/srid/ema/issues+homepage: https://ema.srid.ca/+description: Useful route types for Ema+extra-source-files:+ CHANGELOG.md+ LICENSE+ README.md++common extensions+ default-extensions:+ NoStarIsType+ BangPatterns+ ConstraintKinds+ DataKinds+ DeriveDataTypeable+ DeriveFoldable+ DeriveFunctor+ DeriveGeneric+ DeriveLift+ DeriveTraversable+ DerivingStrategies+ DerivingVia+ EmptyCase+ EmptyDataDecls+ EmptyDataDeriving+ ExistentialQuantification+ ExplicitForAll+ FlexibleContexts+ FlexibleInstances+ GADTSyntax+ GeneralisedNewtypeDeriving+ ImportQualifiedPost+ KindSignatures+ LambdaCase+ MultiParamTypeClasses+ MultiWayIf+ NumericUnderscores+ OverloadedStrings+ PolyKinds+ PostfixOperators+ RankNTypes+ ScopedTypeVariables+ StandaloneDeriving+ StandaloneKindSignatures+ TupleSections+ TypeApplications+ TypeFamilies+ TypeOperators+ ViewPatterns++library+ import: extensions++ -- Modules included in this executable, other than Main.+ -- other-modules:++ -- LANGUAGE extensions used by modules in this package.+ -- other-extensions:+ build-depends:+ , base >=4.13.0.0 && <4.17.0.0.0+ , containers+ , data-default+ , dependent-sum+ , ema+ , ema-generics+ , filepath+ , generics-sop+ , monad-logger+ , optics-core+ , pandoc+ , relude >=1.0+ , sop-core+ , text+ , time+ , unionmount+ , unliftio+ , url-slug++ mixins:+ base hiding (Prelude),+ relude (Relude as Prelude, Relude.Container.One),+ relude++ ghc-options:+ -Wall -Wincomplete-record-updates -Wincomplete-uni-patterns+ -Wmissing-deriving-strategies -Wunused-foralls -Wunused-foralls+ -fprint-explicit-foralls -fprint-explicit-kinds+ -fprint-potential-instances++ exposed-modules:+ Ema.Route.Lib.Extra.MapRoute+ Ema.Route.Lib.Extra.PaginatedRoute+ Ema.Route.Lib.Extra.PandocRoute+ Ema.Route.Lib.Extra.SlugRoute+ Ema.Route.Lib.Extra.StaticRoute+ Ema.Route.Lib.Extra.StringRoute++ hs-source-dirs: src+ default-language: Haskell2010++ if impl(ghc >=8.10)+ ghc-options: -Wunused-packages
+ src/Ema/Route/Lib/Extra/MapRoute.hs view
@@ -0,0 +1,57 @@+{-# LANGUAGE DeriveAnyClass #-}++module Ema.Route.Lib.Extra.MapRoute (+ MapRoute (MapRoute),+) where++import Data.Map.Strict qualified as Map+import Data.Maybe (fromJust)+import Data.Text qualified as T+import Ema.Route.Class (IsRoute (..))+import Ema.Route.Prism (fromPrism_, toPrism_)+import Generics.SOP qualified as SOP+import Optics.Core (preview, prism', review)++{- | Like `FolderRoute` but using dynamic folder name, looked up on a `Map`.++ Empty folder name (map keys) are supported. They would translate in effect to+ the looked up route (no folder created).+-}+newtype MapRoute k r = MapRoute (k, r)+ deriving stock (Show, Eq, Ord, Generic)+ deriving anyclass (SOP.Generic, SOP.HasDatatypeInfo)++instance (IsRoute r, IsString k, ToString k, Ord k, Show r) => IsRoute (MapRoute k r) where+ type RouteModel (MapRoute k r) = Map k (RouteModel r)+ routePrism rs =+ -- TODO: Reimplement using optics composition+ toPrism_ $+ prism'+ ( \(MapRoute (k, r)) ->+ let m = fromJust $ Map.lookup k rs -- HACK: fromJust+ prefix = if toString k == "" then "" else toString k <> "/"+ in prefix <> review (fromPrism_ $ routePrism @r m) r+ )+ ( \fp -> do+ let candidates =+ case breakPath fp of+ (a, Nothing) -> [("", a)]+ (a, Just b) -> [(a, b), ("", fp)]+ (m, k, rest) <-+ asum $+ candidates <&> \(base, rest) ->+ let k = fromString base+ in (,k,rest) <$> Map.lookup k rs+ r <- preview (fromPrism_ $ routePrism @r m) (toString rest)+ pure $ MapRoute (k, r)+ )+ where+ -- Breaks a path once on the first slash.+ breakPath :: HasCallStack => String -> (String, Maybe [Char])+ breakPath (s :: String) =+ case T.breakOn "/" (toText s) of+ (p, "") -> (toString p, Nothing)+ (p, toString -> '/' : rest) -> (toString p, Just rest)+ _ -> error "T.breakOn: impossible"++ routeUniverse rs = concatMap (\(a, m) -> MapRoute . (a,) <$> routeUniverse m) $ Map.toList rs
+ src/Ema/Route/Lib/Extra/PaginatedRoute.hs view
@@ -0,0 +1,105 @@+{-# LANGUAGE DeriveAnyClass #-}++-- | Provides a `Page` type that enables any route to be paginated.+module Ema.Route.Lib.Extra.PaginatedRoute (+ -- * Page+ Page,++ -- * `Page` Functions+ pageNum,+ fromNum,+ pageRange,+ lookupPage,+ lookupPage',++ -- * Utility functions+ paginate,+) where++import Data.Default (Default (..))+import Data.Sequence qualified as Seq+import Data.Text qualified as T+import Ema.Route.Class (IsRoute (..))+import Ema.Route.Prism (toPrism_)+import Generics.SOP qualified as SOP+import Optics.Core (prism')+import Text.Show qualified as Show++{- | Represents a single page in a multi-page view/route.++ Use `pageNum` to retrieve the user-facing page number which are 1-index;+ `fromNum` to convert them back.+-}+newtype Page (t :: Type) = Page {unPage :: Word}+ deriving newtype (Eq, Ord, Num, Enum, Default)+ deriving stock (Generic)+ deriving anyclass (SOP.Generic, SOP.HasDatatypeInfo)++instance Show (Page t) where+ show p = "Page " <> show (pageNum p)++-- | Get the user-facing page number.+pageNum :: forall a. Page a -> Int+pageNum (Page n) =+ fromInteger . toInteger $ n + 1++-- | Convert the user-facing page number.+fromNum :: forall a. Int -> Maybe (Page a)+fromNum n = do+ guard $ n > 0+ pure $ fromInteger . toInteger $ n - 1++-- | Enumerate list of all pages given the total number of pages.+pageRange :: forall a. HasCallStack => Int -> NonEmpty (Page a)+pageRange total =+ fromMaybe (error "pageRange: total must be positive and non-zero") $ do+ end <- fromNum @a total+ nonEmpty [def .. end]++-- | Retrieve the given page from the list.+lookupPage :: HasCallStack => Page a -> NonEmpty [a] -> [a]+lookupPage r xs =+ fromMaybe (error outOfBoundsError) $ lookupPage' r xs+ where+ outOfBoundsError =+ "lookupPage: Page "+ <> show r+ <> " is out of bounds of total available pages: "+ <> show (length xs)++lookupPage' :: Page a -> NonEmpty [a] -> Maybe [a]+lookupPage' p xs =+ toList xs !!? (fromInteger . toInteger $ unPage p)++instance IsRoute (Page a) where+ type RouteModel (Page a) = NonEmpty [a]+ routePrism m =+ -- TODO: Refactor this using lens composition.+ toPrism_ $+ prism'+ ( \page ->+ if page == def+ then "index.html"+ else "page/" <> show (pageNum page) <> ".html"+ )+ ( \fp -> do+ if fp == "index.html"+ then pure def+ else do+ page <- fmap toString $ T.stripSuffix ".html" =<< T.stripPrefix "page/" (toText fp)+ r <- fromNum <=< readMaybe $ page+ void $ lookupPage' r m -- Check if this page exists+ pure r+ )+ routeUniverse =+ toList . pageRange . length++-- | Break a list into pages given the page size.+paginate :: Int -> [a] -> NonEmpty [a]+paginate pageSize =+ fromMaybe (one mempty)+ . nonEmpty+ . fmap toList+ . toList+ . Seq.chunksOf pageSize+ . Seq.fromList
+ src/Ema/Route/Lib/Extra/PandocRoute.hs view
@@ -0,0 +1,198 @@+{-# LANGUAGE DeriveAnyClass #-}+{-# LANGUAGE UndecidableInstances #-}++module Ema.Route.Lib.Extra.PandocRoute (+ -- * Route+ PandocRoute (..),+ mkPandocRoute,++ -- * Model and Arg+ Model (..),+ Arg (..),++ -- * Looking up Pandoc values in model+ lookupPandocRoute,++ -- * Rendering+ PandocHtml (..),+ PandocError (..),+) where++import Control.Exception (throw, throwIO)+import Control.Monad.Logger (+ MonadLogger,+ MonadLoggerIO,+ logInfoNS,+ )+import Data.Default (Default (..))+import Data.List qualified as List+import Data.Map.Strict qualified as Map+import Data.SOP (I (I), NP (..))+import Data.Set qualified as Set+import Ema+import Ema.CLI qualified+import Ema.Route.Generic.TH+import Ema.Route.Lib.Extra.SlugRoute+import Generics.SOP qualified as SOP+import System.FilePath ((</>))+import System.UnionMount qualified as UnionMount+import Text.Pandoc (Pandoc, ReaderOptions, runIO)+import Text.Pandoc qualified as Pandoc+import Text.Pandoc.Sources (ToSources)+import UnliftIO (MonadUnliftIO)++-- | Represents the relative path to a file that pandoc can parse.+newtype PandocRoute = PandocRoute {unPandocRoute :: SlugRoute Pandoc}+ deriving stock (Eq, Ord, Show, Generic)+ deriving anyclass (SOP.Generic, SOP.HasDatatypeInfo)+ deriving+ (HasSubRoutes, IsRoute)+ via ( GenericRoute+ PandocRoute+ '[ WithModel Model+ , WithSubRoutes+ '[ SlugRoute Pandoc+ ]+ ]+ )++instance HasSubModels PandocRoute where+ subModels m = I (Map.mapKeys unPandocRoute $ modelPandocs m) :* Nil++instance IsString PandocRoute where+ fromString fp = maybe (error $ "Bad path: " <> toText fp) snd $ mkPandocRoute fp++mkPandocRoute :: FilePath -> Maybe (String, PandocRoute)+mkPandocRoute fp = do+ (ext, r) <- mkSlugRoute fp+ pure (ext, PandocRoute r)++data Model = Model+ { modelArg :: Arg+ , modelPandocs :: Map PandocRoute Pandoc+ }+ deriving stock (Generic)++lookupPandocRoute :: Model -> PandocRoute -> Maybe (Pandoc, Pandoc -> PandocHtml)+lookupPandocRoute model r = do+ pandoc <- Map.lookup r $ modelPandocs model+ let render = PandocHtml . renderHtml (argWriterOpts $ modelArg model)+ pure (pandoc, render)+ where+ renderHtml :: HasCallStack => Pandoc.WriterOptions -> Pandoc -> Text+ renderHtml writerSettings pandoc =+ either (throw . PandocError_RenderError . show) id $+ Pandoc.runPure $+ Pandoc.writeHtml5String writerSettings pandoc++data Arg = Arg+ { -- Base directory+ argBaseDir :: FilePath+ , -- Pandoc reader formats supported, as file extension; eg: '.md'+ argFormats :: Set String+ , argReaderOpts :: Pandoc.ReaderOptions+ , argWriterOpts :: Pandoc.WriterOptions+ }+ deriving stock (Generic)++instance Default Arg where+ def = Arg "." formats defaultReaderOpts defaultWriterOpts+ where+ formats = Set.fromList knownPandocFormats+ defaultReaderOpts = def {Pandoc.readerExtensions = exts}+ defaultWriterOpts = def {Pandoc.writerExtensions = exts}+ exts :: Pandoc.Extensions+ exts =+ -- Sensible defaults for Markdown and others+ Pandoc.pandocExtensions <> Pandoc.extensionsFromList [Pandoc.Ext_attributes]++instance EmaSite PandocRoute where+ type SiteArg PandocRoute = Arg++ -- Returns the `Pandoc` AST along with the function that renders it to HTML.+ type SiteOutput PandocRoute = (Pandoc, Pandoc -> PandocHtml)++ siteInput _ arg = do+ fmap (Model arg) <$> pandocFilesDyn (argBaseDir arg) (argFormats arg) (argReaderOpts arg)+ siteOutput _rp model r = do+ maybe (liftIO $ throwIO $ PandocError_Missing $ show r) pure $ lookupPandocRoute model r++pandocFilesDyn ::+ forall m.+ (MonadIO m, MonadUnliftIO m, MonadLogger m, MonadLoggerIO m) =>+ FilePath ->+ Set String ->+ ReaderOptions ->+ m (Dynamic m (Map PandocRoute Pandoc))+pandocFilesDyn baseDir formats readerOpts = do+ let pats =+ toList formats <&> \ext ->+ ((), "**/*" <> ext)+ ignorePats = [".*"]+ model0 = mempty+ Dynamic <$> UnionMount.mount baseDir pats ignorePats model0 (const handleUpdate)+ where+ -- Take the file that got changed and update our in-memory `Model` accordingly.+ handleUpdate ::+ (MonadIO m, MonadLogger m, MonadLoggerIO m) =>+ FilePath ->+ UnionMount.FileAction () ->+ m (Map PandocRoute Pandoc -> Map PandocRoute Pandoc)+ handleUpdate fp = \case+ UnionMount.Refresh _ _ -> do+ mData <- readSource fp+ pure $ maybe id (uncurry Map.insert) mData+ UnionMount.Delete ->+ pure $ maybe id (Map.delete . snd) $ mkPandocRoute fp+ readSource :: (MonadIO m, MonadLogger m, MonadLoggerIO m) => FilePath -> m (Maybe (PandocRoute, Pandoc))+ readSource fp = runMaybeT $ do+ (ext, r :: PandocRoute) <- hoistMaybe (mkPandocRoute fp)+ guard $ ext `Set.member` formats+ log $ "Reading " <> toText fp+ s :: Text <- fmap decodeUtf8 $ readFileBS $ baseDir </> fp+ liftIO (runIO $ readPandocSource readerOpts ext s) >>= \case+ Left err -> Ema.CLI.crash "PandocRoute" $ show err+ Right doc -> do+ pure (r, doc)++log :: MonadLogger m => Text -> m ()+log = logInfoNS "PandocRoute"++data PandocError+ = PandocError_Missing Text+ | PandocError_RenderError Text+ deriving stock (Eq, Show)+ deriving anyclass (Exception)++newtype PandocHtml = PandocHtml {unPandocHtml :: Text}+ deriving stock (Eq, Generic)++-- Pandoc reader abstraction+--+-- TODO: Can we refactor this using,+-- https://github.com/jgm/pandoc/blob/16f0316fbaa4d667ba40772969ab8e28fea6a493/src/Text/Pandoc/App/FormatHeuristics.hs#L36++knownPandocFormats :: [String]+knownPandocFormats = [".md", ".org"]++formatFromExt :: String -> Text+formatFromExt = \case+ ".md" -> "markdown"+ ".org" -> "org"+ ext -> throw $ UnsupportedPandocFormat ext++readPandocSource ::+ forall m a.+ (Pandoc.PandocMonad m, ToSources a) =>+ ReaderOptions ->+ [Char] ->+ a ->+ m Pandoc+readPandocSource readerOpts ext s =+ case List.lookup (formatFromExt ext) Pandoc.readers of+ Just (Pandoc.TextReader f) -> f readerOpts s+ _ -> throw $ UnsupportedPandocFormat ext++data UnsupportedPandocFormat = UnsupportedPandocFormat String+ deriving stock (Eq, Show)+ deriving anyclass (Exception)
+ src/Ema/Route/Lib/Extra/SlugRoute.hs view
@@ -0,0 +1,40 @@+module Ema.Route.Lib.Extra.SlugRoute (+ SlugRoute,+ mkSlugRoute,+) where++import Data.Map.Strict qualified as Map+import Data.Text qualified as T+import Ema.Route.Class (IsRoute (..))+import Ema.Route.Prism (htmlSuffixPrism, toPrism_)+import Network.URI.Slug (Slug)+import Network.URI.Slug qualified as Slug+import Optics.Core (prism', (%))+import System.FilePath (splitExtension, splitPath)++{- | Route to a file that is associated with a value of type `a`.++ A route to foo/bar/qux.md, for instance, is encoded as /foo/bar/qux. ie., the+ extension is dropped.+-}+newtype SlugRoute (a :: Type) = SlugRoute {unSlugRoute :: NonEmpty Slug}+ deriving stock (Eq, Ord, Show, Generic)++instance IsRoute (SlugRoute a) where+ type RouteModel (SlugRoute a) = Map (SlugRoute a) a+ routePrism m =+ let encode (SlugRoute slugs) =+ toString $ T.intercalate "/" $ Slug.unSlug <$> toList slugs+ decode fp = do+ guard $ not $ null fp+ slugs <- nonEmpty $ fromString . toString <$> T.splitOn "/" (toText fp)+ let r = SlugRoute slugs+ guard $ Map.member r m+ pure r+ in toPrism_ $ htmlSuffixPrism % prism' encode decode+ routeUniverse = Map.keys++mkSlugRoute :: forall a. FilePath -> Maybe (String, SlugRoute a)+mkSlugRoute (splitExtension -> (relFp, ext')) = do+ let slugs = fromString . toString . T.dropWhileEnd (== '/') . toText <$> splitPath relFp+ (ext',) <$> viaNonEmpty SlugRoute slugs
+ src/Ema/Route/Lib/Extra/StaticRoute.hs view
@@ -0,0 +1,111 @@+{-# LANGUAGE DeriveAnyClass #-}+{-# OPTIONS_GHC -Wno-unrecognised-pragmas #-}++{-# HLINT ignore "Use impureThrow" #-}++module Ema.Route.Lib.Extra.StaticRoute (+ StaticRoute,+ Model (..),++ -- * Helpers+ staticRouteUrl,+) where++import Control.Exception (throw)+import Control.Monad.Logger (MonadLogger, MonadLoggerIO)+import Data.List qualified as List+import Data.Map.Strict qualified as Map+import Data.Some (Some)+import Data.Time (UTCTime, defaultTimeLocale, formatTime, getCurrentTime)+import Ema+import Ema.CLI qualified+import GHC.TypeLits (KnownSymbol, Symbol, symbolVal)+import Optics.Core (Prism', prism')+import System.FilePath (takeExtension, (</>))+import System.UnionMount qualified as UnionMount+import UnliftIO (MonadUnliftIO)++-- | Route to a static file under @baseDir@.+newtype StaticRoute (baseDir :: Symbol) = StaticRoute {unStaticRoute :: FilePath}+ deriving newtype (Eq, Ord, Show)+ deriving stock (Generic)++data Model = Model+ { modelCliAction :: Some Ema.CLI.Action+ , modelFiles :: Map FilePath UTCTime+ }+ deriving stock (Eq, Show, Generic)++instance IsRoute (StaticRoute baseDir) where+ type RouteModel (StaticRoute baseDir) = Model+ routePrism (modelFiles -> files) =+ let enc =+ unStaticRoute+ dec fp =+ StaticRoute fp <$ guard (Map.member fp files)+ in toPrism_ $ prism' enc dec+ routeUniverse (modelFiles -> files) =+ StaticRoute <$> Map.keys files++instance KnownSymbol baseDir => EmaSite (StaticRoute baseDir) where+ siteInput cliAct _ = do+ files <- staticFilesDynamic $ symbolVal (Proxy @baseDir)+ pure $ Model cliAct <$> files+ siteOutput _ _ (StaticRoute path) =+ pure $ Ema.AssetStatic $ symbolVal (Proxy @baseDir) </> path++staticFilesDynamic ::+ forall m.+ (MonadIO m, MonadUnliftIO m, MonadLogger m, MonadLoggerIO m) =>+ FilePath ->+ m (Dynamic m (Map FilePath UTCTime))+staticFilesDynamic baseDir = do+ let pats = [((), "**")]+ ignorePats = [".*"]+ model0 = mempty+ Dynamic <$> UnionMount.mount baseDir pats ignorePats model0 (const handleUpdate)+ where+ handleUpdate ::+ FilePath ->+ UnionMount.FileAction () ->+ m (Map FilePath UTCTime -> Map FilePath UTCTime)+ handleUpdate fp = \case+ UnionMount.Refresh _ _ -> do+ lastAccessed <- liftIO getCurrentTime+ pure $ Map.insert fp lastAccessed+ UnionMount.Delete -> do+ pure $ Map.delete fp++-- | Like `Ema.routeUrl`, but looks up the value and appends it to URL in live-server (for force-reload in browser)+staticRouteUrl ::+ forall s baseDir.+ (IsString s, HasCallStack) =>+ Prism' FilePath (StaticRoute baseDir) ->+ RouteModel (StaticRoute baseDir) ->+ FilePath ->+ s+staticRouteUrl rp model fp =+ let lastAccessed = lookupMust fp model+ tag = toText $ formatTime defaultTimeLocale "%s" lastAccessed+ url = Ema.routeUrl rp $ StaticRoute fp+ in fromString . toString $ url <> refreshAddendum tag+ where+ -- Force the browser to reload the static file referenced+ refreshAddendum tag =+ fromMaybe "" $ do+ -- In live server, force reload all (re-added/modified) static files.+ -- In statically generated site, do it only for CSS and JS files.+ guard $+ Ema.CLI.isLiveServer (modelCliAction model)+ || takeExtension fp `List.elem` [".css", ".js"]+ pure $ "?" <> tag++lookupMust :: FilePath -> Model -> UTCTime+lookupMust fp model =+ case Map.lookup fp (modelFiles model) of+ Just lastAccessed -> lastAccessed+ Nothing -> throw $ MissingStaticFile fp++newtype MissingStaticFile = MissingStaticFile FilePath+ deriving stock (Eq, Show)+ deriving anyclass (Exception)
+ src/Ema/Route/Lib/Extra/StringRoute.hs view
@@ -0,0 +1,31 @@+{-# LANGUAGE DeriveAnyClass #-}++module Ema.Route.Lib.Extra.StringRoute where++import Data.Map.Strict qualified as Map+import Ema.Route.Class (IsRoute (..))+import Ema.Route.Prism (htmlSuffixPrism, toPrism_)+import Generics.SOP qualified as SOP+import Optics.Core (coercedTo, iso, prism', (%))++{- | A route represented by a stringy type; associated with a Map indexed by+ same as its model.++ See Ex03_Store.hs for example usage.+-}+newtype StringRoute (a :: Type) r = StringRoute {unStringRoute :: r}+ deriving stock (Show, Eq, Ord, Generic)+ deriving anyclass (SOP.Generic, SOP.HasDatatypeInfo)++instance (IsString r, ToString r, Eq r, Ord r) => IsRoute (StringRoute a r) where+ type RouteModel (StringRoute a r) = Map r a+ routePrism as =+ toPrism_ $+ htmlSuffixPrism+ % iso fromString toString+ % mapMemberPrism as+ % coercedTo+ where+ mapMemberPrism m =+ prism' id $ \r -> r <$ guard (r `Map.member` m)+ routeUniverse as = StringRoute <$> Map.keys as