diff --git a/.gitignore b/.gitignore index f1be45b9c624ca006e07396a50b38be2fdf7c810..733014835aa80bcf67e8c8b7fe88ad8769d93395 100644 --- a/.gitignore +++ b/.gitignore @@ -4,4 +4,8 @@ /.ghc.environment* .dir-locals.el /bin/ -/TAGS +TAGS +elm-stuff/ +/web/assets/main.js +/web/backend/.stack-work/ +/web/frontend/main.js diff --git a/cabal.project b/cabal.project index 87216b5338fc451189cd7de01f43c15f37efcad8..27ae1d7e7399c41782e6097e22bbbca0892f8edf 100644 --- a/cabal.project +++ b/cabal.project @@ -1,4 +1,4 @@ -packages: *.cabal +packages: copar.cabal, web/backend/copar-web.cabal constraints: json -pretty -parsec -generic diff --git a/src/Copar/Parser.hs b/src/Copar/Parser.hs index 83e9c0d79c0e11749d60bfc6092cbf5887c7dab7..e04b087d0dcb6354be5de1330246facab2840927 100644 --- a/src/Copar/Parser.hs +++ b/src/Copar/Parser.hs @@ -37,7 +37,6 @@ import Copar.Coalgebra.Parser import Copar.Parser.Types import qualified Copar.Parser.Lexer as L import Copar.Functors -import Copar.Functors.SomeFunctor ( SomeFunctor ) import Copar.FunctorExpression.Desorting import Copar.FunctorExpression.Type import Copar.FunctorDescription @@ -51,8 +50,8 @@ functorExpressionParser => FunctorExpression f Precedence -> [[FunctorParser f]] -> Parser (FunctorExpression f Sort) -functorExpressionParser varReplacement functors = do - ((annotateSorts . replaceVar) <$> functorsParser (concat functors)) +functorExpressionParser varReplacement functors = + annotateSorts . replaceVar <$> functorsParser (concat functors) where replaceVar Variable = varReplacement replaceVar other = other @@ -217,6 +216,4 @@ readStdin , (SymbolTable, Encoding (Label TheFunctor) (F1 TheFunctor)) ) ) -readStdin config = do - content <- T.getContents - return $ parseCoalgebra config "(stdin)" content +readStdin config = parseCoalgebra config "(stdin)" <$> T.getContents diff --git a/stack.yaml b/stack.yaml index ff12a4f500c2fd120768b883c5f1b1a5650f9f1b..086deacc4b648ce6457aa6b8047b557e6c26c943 100644 --- a/stack.yaml +++ b/stack.yaml @@ -37,6 +37,7 @@ resolver: lts-12.20 # will not be run. This is useful for tweaking upstream packages. packages: - . +- web/backend # Dependency packages to be pulled from upstream that are not in the resolver # (e.g., acme-missiles-0.3) extra-deps: @@ -46,6 +47,7 @@ extra-deps: # Primitive >= 0.6.2 supports SmallVector, but 0.6.2 and 0.6.3 are buggy. See # https://hackage.haskell.org/package/primitive-0.6.4.0/changelog - primitive-0.6.4.0 + - aeson-1.4.2.0 # Override default flag values for local packages and extra-deps flags: diff --git a/web/Makefile b/web/Makefile new file mode 100644 index 0000000000000000000000000000000000000000..561b6d5ad0becaeec621563f028bca699d610c48 --- /dev/null +++ b/web/Makefile @@ -0,0 +1,9 @@ +.PHONY: js haskell all + +all: js haskell + +js: + $(MAKE) -C frontend + +haskell: + stack build copar-web diff --git a/web/README.md b/web/README.md new file mode 100644 index 0000000000000000000000000000000000000000..292ddcfe4004c65c1891ecc9f63d00eb9cf91c4b --- /dev/null +++ b/web/README.md @@ -0,0 +1,19 @@ +# Web Frontend + +This directory contains a web frontend for CoPaR. It consists of a +web-server written in Haskell and a Javascript client written in Elm. + +## Prerequisites + + - elm 0.19 + - stack + +## Building + + make + +## Running + + stack exec copar-web assets + +This will start a web server on 127.0.0.1:31517. diff --git a/web/assets/custom.css b/web/assets/custom.css new file mode 100644 index 0000000000000000000000000000000000000000..800934dec4133392e9a029c54cbd776b30d13796 --- /dev/null +++ b/web/assets/custom.css @@ -0,0 +1,63 @@ +.header h1 { + color: #fff; + text-align: center; + margin: 0.2em 0; + font-size: 3em; + font-weight: 300; +} + +.body { + height: 100%; +} + +.header { + background-color: rgb(0, 120, 231); + padding-top: 1em; + padding-bottom: 1em; + border-bottom-color: #bbb; + border-bottom-style: solid; + border-bottom-width: 1px; +} + +.input { + padding: 1em; +} + +.output { + padding: 1em; + height: 100%; +} + +.error-message { + color: rgb(202, 60, 60); + white-space: pre-wrap; +} + +.statelist { + list-style-type: none; + padding: 0; + margin: 1em; +} + +.statelist li { + display: inline; + margin-right: 0.5em; + padding: 2px; + background-color: rgb(0, 120, 231); + color: white; +} + +.blocklist { + margin: 0px; + padding: 0px; + list-style: none; +} + +#graph { + display: block; + height: 400px; +} + +#source { + height: 400px; +} diff --git a/web/assets/index.html b/web/assets/index.html new file mode 100644 index 0000000000000000000000000000000000000000..cb68d0e4f7d6a3b75b9671442ea5095be3e07027 --- /dev/null +++ b/web/assets/index.html @@ -0,0 +1,61 @@ + + + + + + + + + + + + + Copar + + +
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If your program is a subroutine library, you +may consider it more useful to permit linking proprietary applications with +the library. If this is what you want to do, use the GNU Lesser General +Public License instead of this License. But first, please read +. diff --git a/web/backend/Main.hs b/web/backend/Main.hs new file mode 100644 index 0000000000000000000000000000000000000000..1590e373886e44640b75b3e8c7cbe7927693fb99 --- /dev/null +++ b/web/backend/Main.hs @@ -0,0 +1,125 @@ +{-# LANGUAGE OverloadedStrings #-} +{-# LANGUAGE LambdaCase #-} + +module Main where + +import Control.Monad.ST +import System.Environment +import System.IO +import Data.Function ( (&) ) +import Data.Maybe (fromJust) +import Data.Bifunctor + +import Web.Scotty +import qualified Data.Text.Lazy.Encoding as TL +import qualified Data.Text.Lazy as TL +import Data.Text ( Text ) +import qualified Data.Text as T +import qualified Data.ByteString.Lazy as BSLazy +import Network.Wai.Middleware.Static ( staticPolicy + , addBase + ) +import Network.Wai.Handler.Warp ( setPort + , setTimeout + , setHost + , defaultSettings + ) +import Data.Aeson ((.=)) +import qualified Data.Aeson as Json +import qualified Data.HashMap.Strict as HM +import Data.Vector (Vector) +import qualified Data.Vector as V + +import qualified Copar.Parser as P +import Copar.Algorithm +import Copar.PartitionPrinter +import qualified Data.Partition as Partition +import Data.Partition (Partition, State) +import Data.MorphismEncoding (Encoding) +import qualified Data.MorphismEncoding as Encoding +import Copar.Coalgebra.Parser (SymbolTable, fromSymbolTable) + +data Reply = Error Text | Result [[State]] SymbolTable + +stateName :: SymbolTable -> State -> Text +stateName symbolTable s = fromJust (HM.lookup s (fromSymbolTable symbolTable)) + +instance Json.ToJSON Reply where + toJSON (Error e) = Json.object ["type" .= ("error" :: Text), "content" .= e] + toJSON (Result states symbolTable) = Json.object + [ "type" .= ("result" :: Text) + , "content" .= map (map (stateName symbolTable)) states + ] + + +doRefine :: Text -> Reply +doRefine input = case P.parseCoalgebra P.defaultConfig "input" input of + Left e -> Error (T.pack e) + Right (f, (symbolTable, encoding)) -> + let partition = runST (refine f encoding) + in Result (restrictPartitionToSort1 encoding partition) symbolTable + + +data GraphReply = GraphError Text | Graph (Encoding () ()) SymbolTable + +instance Json.ToJSON GraphReply where + toJSON (GraphError e) = + Json.object ["type" .= ("error" :: Text), "content" .= e] + toJSON (Graph encoding symbolTable) = + Json.object [ "type" .= ("graph" :: Text) + , "content" .= encodingToJson encoding symbolTable + ] + +encodingToJson :: Encoding a b -> SymbolTable -> Json.Value +encodingToJson encoding symbolTable = + Json.Array $ + V.map wrapData + (V.imap encodeState (Encoding.structure encoding) + <> V.imap encodeEdges (Encoding.edges encoding)) + + where + wrapData x = Json.object ["data" .= x] + encodeState i _ = + Json.object (("id" .= ("s" ++ show i)):label i) + encodeEdges i (Encoding.Edge from _ to) = + Json.object [ "id" .= ("e" ++ show i) + , "source" .= state from + , "target" .= state to + ] + state = ("s" ++) . show + label i = case HM.lookup i (fromSymbolTable symbolTable) of + Just name -> [ "label" .= name] + Nothing -> [] + +doGraph :: Text -> GraphReply +doGraph input = case P.parseCoalgebra P.defaultConfig "input" input of + Left e -> GraphError (T.pack e) + Right (f, (symbolTable, encoding)) -> + Graph (bimap (const ()) (const ()) encoding) symbolTable + + +main :: IO () +main = getArgs >>= \case + [path] -> do + let opts = Options + { verbose = 1 + , settings = defaultSettings + & setPort 31517 + & setTimeout 5 + & setHost "127.0.0.1" + } + + scottyOpts opts $ do + middleware (staticPolicy (addBase path)) + get "/" $ redirect "index.html" + + post "/refine" $ do + input <- TL.decodeUtf8 <$> body + json . doRefine . TL.toStrict $ input + + post "/graph" $ do + input <- TL.decodeUtf8 <$> body + json . doGraph . TL.toStrict $ input + _ -> do + self <- getProgName + hPutStrLn stderr $ "Usage: " ++ self ++ " ASSETS_PATH" diff --git a/web/backend/copar-web.cabal b/web/backend/copar-web.cabal new file mode 100644 index 0000000000000000000000000000000000000000..292d55207287f66aacbb57019994429be5e071ae --- /dev/null +++ b/web/backend/copar-web.cabal @@ -0,0 +1,22 @@ +name: copar-web +version: 0.1.0.0 +license: GPL-3 +license-file: LICENSE +author: Hans-Peter Deifel +maintainer: hans-peter.deifel@fau.de +build-type: Simple +cabal-version: >=1.24 + +executable copar-web + main-is: Main.hs + default-language: Haskell2010 + build-depends: base >= 4.11 && <4.13 + , copar + , scotty >= 0.11.2 && <0.12 + , text >= 1.2.3 && <1.3 + , bytestring >= 0.10.8 && <0.11 + , wai-middleware-static >=0.8.2 && <0.9 + , warp >= 3.2.22 && <3.3 + , aeson >= 1.4.2 && <1.5 + , unordered-containers >= 0.2.9 && < 0.3 + , vector >= 0.12.0 && <0.13 diff --git a/web/frontend/Makefile b/web/frontend/Makefile new file mode 100644 index 0000000000000000000000000000000000000000..3b05fd06498d5e276a66495eeec9f718209dc73f --- /dev/null +++ b/web/frontend/Makefile @@ -0,0 +1,11 @@ +.PHONY: all + +all: ../assets/main.js + + +main.js: src/Main.elm + elm make $^ --optimize --output $@ + + +../assets/main.js: main.js + uglifyjs $< --compress 'pure_funcs="F2,F3,F4,F5,F6,F7,F8,F9,A2,A3,A4,A5,A6,A7,A8,A9",pure_getters,keep_fargs=false,unsafe_comps,unsafe' | uglifyjs --mangle --output=$@ diff --git a/web/frontend/elm.json b/web/frontend/elm.json new file mode 100644 index 0000000000000000000000000000000000000000..e73871784c581ebea4428134b1701869ec2774ec --- /dev/null +++ b/web/frontend/elm.json @@ -0,0 +1,27 @@ +{ + "type": "application", + "source-directories": [ + "src" + ], + "elm-version": "0.19.0", + "dependencies": { + "direct": { + "elm/browser": "1.0.1", + "elm/core": "1.0.2", + "elm/html": "1.0.0", + "elm/http": "2.0.0", + "elm/json": "1.1.2" + }, + "indirect": { + "elm/bytes": "1.0.7", + "elm/file": "1.0.1", + "elm/time": "1.0.0", + "elm/url": "1.0.0", + "elm/virtual-dom": "1.0.2" + } + }, + "test-dependencies": { + "direct": {}, + "indirect": {} + } +} \ No newline at end of file diff --git a/web/frontend/src/Main.elm b/web/frontend/src/Main.elm new file mode 100644 index 0000000000000000000000000000000000000000..b3ec8184c9926289db6c2ec8155b1f8f478b23d0 --- /dev/null +++ b/web/frontend/src/Main.elm @@ -0,0 +1,222 @@ +port module Main exposing (main) + +import Browser +import Html exposing (Html) +import Html.Attributes as Attr +import Html.Events as Html +import Http +import Json.Decode as D +import Json.Encode as E + +-- MAIN + + +main = + Browser.element + { init = init + , update = update + , subscriptions = subscriptions + , view = view + } + +port drawGraph : E.Value -> Cmd msg + + +-- MODEL + + +type alias Model = + { inputText : String + , outputStatus : OutputStatus + } + +type OutputStatus + = NothingYet + | WaitingForPartition + | PartitionResult (Result String Blocks) + | WaitingForGraph + | GraphResult (Result String ()) + + +init : () -> (Model, Cmd Msg) +init _ = ({ inputText = "" , outputStatus = NothingYet }, Cmd.none) + + +-- UPDATE + +type Error + = HttpError Http.Error + | ServerError String + +type alias Blocks = List (List String) + +type Msg + = ChangeInput String + | Refine + | GotPartition (Result Error Blocks) + | Graph + | GotGraph (Result Error D.Value) + + +update : Msg -> Model -> (Model, Cmd Msg) +update msg model = + case msg of + ChangeInput newInputText -> + ({ model | inputText = newInputText }, Cmd.none) + Refine -> + ( { model | outputStatus = WaitingForPartition } + , refine model.inputText + ) + Graph -> + ( { model | outputStatus = WaitingForGraph } + , graph model.inputText + ) + GotPartition result -> + case result of + Ok txt -> ( {model | outputStatus = PartitionResult (Ok txt) }, Cmd.none ) + Err (HttpError err) -> + ( { model | outputStatus = PartitionResult (Err ("Request to server failed with " + ++ showHttpError err)) } + , Cmd.none + ) + Err (ServerError err) -> ( { model | outputStatus = PartitionResult (Err err) }, Cmd.none ) + GotGraph result -> + case result of + Ok g -> ({ model | outputStatus = GraphResult (Ok ())}, drawGraph g) + Err (HttpError err) -> + ( { model | outputStatus = GraphResult (Err ("Request to server failed with " + ++ showHttpError err))} + , Cmd.none + ) + Err (ServerError err) -> ( { model | outputStatus = GraphResult (Err err) }, Cmd.none ) + +showHttpError : Http.Error -> String +showHttpError err = + case err of + (Http.BadUrl _) -> "BadUrl" + (Http.Timeout) -> "Timeout" + (Http.NetworkError) -> "NetworkError" + (Http.BadStatus _) -> "BadStatus" + (Http.BadBody _) -> "BadBody" + + +refine : String -> Cmd Msg +refine input = + Http.post + { + url = "refine" + , body = Http.stringBody "text/plain" input + , expect = Http.expectJson (GotPartition << mkResult) resultDecoder + } + +mkResult : Result Http.Error (Result String a) -> Result Error a +mkResult res = + case res of + (Ok (Ok s)) -> Ok s + (Ok (Err s)) -> Err (ServerError s) + (Err e) -> Err (HttpError e) + +resultDecoder : D.Decoder (Result String Blocks) +resultDecoder = D.field "type" D.string |> D.andThen resultDecoderImpl + +resultDecoderImpl : String -> D.Decoder (Result String Blocks) +resultDecoderImpl typ = + case typ of + "error" -> D.map Err (D.field "content" D.string) + "result" -> D.map Ok (D.field "content" (D.list (D.list D.string))) + other -> D.fail ("Unknown server response of type " ++ other) + + +graph : String -> Cmd Msg +graph input = + Http.post + { url = "graph" + , body = Http.stringBody "text/plain" input + , expect = Http.expectJson (GotGraph << mkResult) graphDecoder + } + +graphDecoder : D.Decoder (Result String D.Value) +graphDecoder = D.field "type" D.string |> D.andThen graphDecoderImpl + +graphDecoderImpl : String -> D.Decoder (Result String D.Value) +graphDecoderImpl typ = + case typ of + "error" -> D.map Err (D.field "content" D.string) + "graph" -> D.map Ok (D.field "content" D.value) + other -> D.fail ("Unknown server response of type " ++ other) + +-- SUBSCRIPTIONS + +subscriptions : Model -> Sub Msg +subscriptions model = + Sub.none + + +-- VIEW + + +view : Model -> Html Msg +view model = + Html.div [Attr.class "body"] + [ Html.div [Attr.class "header"] [Html.h1 [] [ Html.text "CoPaR" ]] + , Html.div [Attr.class "pure-g"] + [ Html.div [Attr.class "pure-u-1 pure-u-md-1-2"] [viewInput model] + , Html.div [Attr.class "pure-u-1 pure-u-md-1-2"] [viewOutput model] + ] + ] + +viewInput : Model -> Html Msg +viewInput model = + Html.div [Attr.class "input"] + [ Html.h2 [] [ Html.text "Input coalgebra" ] + , Html.div [Attr.class "pure-form"] + [ Html.textarea [ Attr.cols 80 + , Attr.rows 25 + , Attr.placeholder "Coalgebra specificiation" + , Attr.value model.inputText + , Html.onInput ChangeInput + , Attr.class "pure-input-1" + , Attr.id "source" + ] [] + , Html.button [ if model.outputStatus == WaitingForPartition -- todo all waiting + then Attr.disabled True + else Html.onClick Refine + , Attr.class "pure-button pure-button-primary pure-input-1-2" + ] [ Html.text "REFINE" ] + , Html.button [ if model.outputStatus == WaitingForGraph -- todo all waiting + then Attr.disabled True + else Html.onClick Graph + , Attr.class "pure-button pure-button-primary pure-input-1-2" + ] [ Html.text "GRAPH" ] + ] + ] + +viewOutput : Model -> Html Msg +viewOutput model = + Html.div [Attr.class "output"] + [ Html.h2 [] [ Html.text "Result"] + , case model.outputStatus of + NothingYet -> Html.div [] [] + WaitingForPartition -> Html.text "waiting..." + PartitionResult (Ok res) -> + Html.div [Attr.id "blocks"] [ Html.h4 [] [Html.text "Blocks of Resulting Partition:"] + , viewBlocks res + ] + PartitionResult (Err res) -> Html.pre [Attr.class "error-message"] [Html.text res] + WaitingForGraph -> Html.text "waiting..." + GraphResult (Ok g) -> Html.div [Attr.id "graph"] [] + GraphResult (Err res) -> Html.pre [Attr.class "error-message"] [Html.text res] + ] + +viewBlocks : Blocks -> Html Msg +viewBlocks blocks = + blocks + |> List.indexedMap + (\i block -> + block + |> List.map (\x -> Html.li [] [Html.text x]) + |> Html.ul [Attr.class "statelist"] + |> List.singleton + |> (List.append [Html.span [] [Html.text ("Block " ++ String.fromInt i ++ ":")]]) + |> Html.li []) + |> Html.ul [Attr.class "blocklist"]