namespace Fibble.FibLib open System.Net open FParsec open YamlDotNet.Serialization open System.Collections.Generic // ========================================== // 1. AST & Utils // ========================================== module Ast = type InlineNode = | Text of string | RawHtml of string | Expr of code: string * result: string option | Element of tag: string * args: (string * string) list * children: InlineNode list type BlockNode = | Section of level: int * args: (string * string) list * children: InlineNode list | Paragraph of children: InlineNode list type Document = BlockNode list type TagRenderer = Map -> (string * string) list -> InlineNode list -> InlineNode let rec stringifyNodes (nodes: InlineNode list) = let tupleToString (t: string * string) = sprintf "%s=\"%s\"" (fst t) (snd t) nodes |> List.map (function | Text t -> t | RawHtml h -> h | Element(tag, args, children) -> // Omvandla inre taggar till HTML let attrs = if args.IsEmpty then "" else " " + String.concat " " (List.map tupleToString args) sprintf "<%s%s>%s" tag attrs (stringifyNodes children) tag | Expr(_, Some res) -> res | Expr(code, None) -> sprintf "@(%s)" code // Fallback om den inte evaluerats ) |> String.concat "" module Utils = open Ast let smartDedent (input: string) = let lines = input.Replace("\r\n", "\n").Split '\n' |> List.ofArray // 1. Hitta den minsta indenteringen bland alla rader som har text let minIndent = lines |> List.filter (fun l -> not (System.String.IsNullOrWhiteSpace(l))) |> List.map (fun l -> l.Length - l.TrimStart().Length) |> function | [] -> 0 | indents -> List.min indents // 2. Dra av exakt så många mellanslag från alla rader // för att dessa inte ska vara med i det slutgiltiga dokumentet. let dedented = lines |> List.map (fun l -> if System.String.IsNullOrWhiteSpace(l) then "" else l.Substring(minIndent) ) // 3. Slå ihop och städa bort överflödiga radbrytningar i början/slutet (String.concat "\n" dedented).Trim('\n', '\r') let positional f: TagRenderer = fun meta (args: (string*string) list) children -> f meta (List.map snd args) children let getArgIdx (args: (string*string) list) index defaultVal = let unnamed = args |> List.filter (fun (k, _) -> k = "") if index < unnamed.Length then (snd unnamed.[index]).Trim('"') else defaultVal // This gets the arg defined by "key" unless it is not set, it then tries to get it by index. If that fails, it gets the defaultVal let getArg (args: (string * string) list) (key: string) (index: int) (defaultVal: string) = match args |> List.tryFind (fun (k, _) -> k = key) with | Some (_, v) -> v.Trim('"') | None -> getArgIdx args index defaultVal let withArg1 def (f: string -> InlineNode list -> InlineNode) = fun _ args children -> f (getArgIdx args 0 def) children let withArg2 (k1: string) (d1: string) (k2: string) (d2: string) (f: string -> string -> InlineNode list -> InlineNode) = fun _ args children -> f (getArg args k1 0 d1) (getArg args k2 1 d2) children let nameToElement (n:string) : TagRenderer = fun meta args children -> Element(n, args, children) // ========================================== // 2. Parser // ========================================== module Parser = open Ast let pInline, pInlineRef = createParserForwardedToRef() let getSectionLevel (name: string) = if name = "section" then 1 elif name = "subsection" then 2 elif name.StartsWith("sub") && name.EndsWith("section") then (name.Length - 7) / 3 + 1 else 1 let isSection (name: string) = name.EndsWith("section") let pNewline = newline let pArg = spaces >>. choice [ attempt (many1Chars (asciiLetter <|> digit <|> anyOf "-_") .>> spaces .>> pchar '=' .>> spaces .>>. manyChars (noneOf ",]")) |>> fun (k, v) -> (k, v.Trim()) // Fallback: bara "värde" (ges en tom nyckel) manyChars (noneOf ",]") |>> fun v -> ("", v.Trim()) ] .>> spaces let pArgs = between (pstring "[") (pstring "]") (sepBy pArg (pstring ",")) // --- 1. Måsvinge-parser (för @kommandon) --- let pRawBody, pRawBodyRef = createParserForwardedToRef() pRawBodyRef.Value <- many (choice [ many1Chars (noneOf "{}") pchar '{' >>. pRawBodyRef.Value .>> pchar '}' |>> sprintf "{%s}" ]) |>> String.concat "" let pBody = between (pstring "{") (pstring "}") pRawBodyRef.Value >>= fun raw -> // En mer tillåtande parser isolerad för innehållet inuti {...} let pInnerInline = choice [ attempt pInline // Fångar upp dubbla radbrytningar och måsvingar som pInline normalt blockerar many1Chars (anyOf "\r\n{}") |>> Text ] match run (many pInnerInline .>> eof) (Utils.smartDedent raw) with | Success(n, _, _) -> preturn n | Failure(m, _, _) -> fail m // --- 2. Parentes-parser (för @(...) med sträng-stöd) --- let pParenBody, pParenBodyRef = createParserForwardedToRef() // En inre parser som känner igen F#-strängar och escape-tecken (\") let pFSharpString = let normal = many1Chars (noneOf "\"\\") let escaped = pstring "\\" >>. anyChar |>> sprintf "\\%c" pstring "\"" .>>. manyStrings (normal <|> escaped) .>>. pstring "\"" |>> fun ((start, inner), end_) -> start + inner + end_ // Själva loopen letar nu efter strängar FÖRST, sen vanlig text, och sist inre parenteser pParenBodyRef.Value <- manyStrings (choice [ pFSharpString many1Chars (noneOf "()\"") pchar '(' >>. pParenBody .>> pchar ')' |>> sprintf "(%s)" ]) let pExpr = attempt (pstring "@(") >>. pParenBody .>> pstring ")" |>> fun c -> Expr(c, None) // --- Övriga inline-parsers --- let pMultilineCode = pstring "@\"\"\"" >>. manyCharsTill anyChar (pstring "\"\"\"") |>> fun c -> Expr(Utils.smartDedent c, None) let pInlineCommand = attempt ( pchar '@' >>. many1Chars asciiLetter >>= fun name -> if isSection name then fail "Sektioner är block-element." else preturn name ) .>>. opt pArgs .>>. opt pBody |>> fun ((n, a), b) -> Element(n, defaultArg a [], defaultArg b []) // MÅSTE tilldelas efter att alla pExpr, pInlineCommand etc. är definierade pInlineRef.Value <- choice [ pMultilineCode pExpr pInlineCommand many1Chars (noneOf "@{}\n\r") |>> Text attempt (pNewline .>> notFollowedBy pNewline) |>> fun _ -> Text "\n" pchar '@' |>> fun _ -> Text "@" ] // --- Block Parsers --- let pSectionBlock = attempt ( pchar '@' >>. many1Chars asciiLetter >>= fun name -> if isSection name then preturn name else fail "Inte en sektion." ) .>>. opt pArgs .>>. opt pBody |>> fun ((name, argsOpt), bodyOpt) -> Section(getSectionLevel name, defaultArg argsOpt [], defaultArg bodyOpt []) let pParagraphBlock = many1 pInline |>> Paragraph let pBlock = choice [ pSectionBlock; pParagraphBlock ] // --- Dokument Parser --- let pDocument = spaces >>. opt ( pstring "---" >>. manyCharsTill anyChar (attempt (pNewline >>. pstring "---")) |>> fun yamlStr -> let deserializer = DeserializerBuilder().Build() let dict = deserializer.Deserialize>(yamlStr) if isNull dict then Map.empty else dict |> Seq.map (fun kvp -> kvp.Key, kvp.Value) |> Map.ofSeq ) .>> spaces .>>. sepEndBy pBlock (many1 pNewline) .>> eof |>> fun (headerOpt, blocks) -> (defaultArg headerOpt Map.empty, blocks) let parse i = match run pDocument i with | Success(r, _, _) -> r | Failure(e, _, _) -> failwith e // ========================================== // 3. Execution & Printer // ========================================== type IEvaluator = abstract member Evaluate: string -> string module Execution = open Ast let rec transform (metadata: Map) (prelude: Map) (eval: IEvaluator) = function | Element(n, a, c) when prelude.ContainsKey n -> prelude.[n] metadata a (c |> List.map (transform metadata prelude eval)) | Element(n, a, c) -> Element(n, a, c |> List.map (transform metadata prelude eval)) | Expr(c, _) -> RawHtml (eval.Evaluate c) | n -> n module HtmlPrinter = open Ast let voidElements = [ "area"; "base"; "br"; "col"; "command"; "embed"; "hr"; "img"; "input"; "keygen"; "link"; "meta"; "param"; "source"; "track"; "wbr"] let renderAttributes args = args |> List.map (fun m -> sprintf "%s=\"%s\"" (fst m) (snd m)) |> String.concat " " let rec renderInline = function | Text t -> WebUtility.HtmlEncode t | RawHtml h -> h | Element(t,a,c) when List.contains t voidElements -> sprintf "<%s %s />" t (renderAttributes a) | Element(t, a, c) -> sprintf "<%s %s>%s" t (renderAttributes a) (c |> List.map renderInline |> String.concat "") t | _ -> "" let render (header, blocks) = blocks |> List.map (function | Paragraph [RawHtml html] -> html // 2. (Frivillig) Mer robust guard om parsern råkar lämna kvar // blanksteg (Text " ") runt ditt @md-block i samma paragraf | Paragraph nodes when nodes |> List.forall (function | RawHtml _ -> true | Text t when System.String.IsNullOrWhiteSpace(t) -> true | _ -> false) -> nodes |> List.choose (function RawHtml h -> Some h | _ -> None) |> String.concat "\n" | Paragraph c -> sprintf "

%s

" (c |> List.map renderInline |> String.concat "") | Section(l, _, c) -> sprintf "%s" l (c |> List.map renderInline |> String.concat "") l) |> String.concat "\n" module Evaluators = open System.IO open System.Text open FSharp.Compiler.Interactive.Shell type FsiEvaluator() = let sbOut = new StringBuilder() let sbErr = new StringBuilder() let inStream = new StringReader("") let outStream = new StringWriter(sbOut) let errStream = new StringWriter(sbErr) // Initiera FSI-sessionen let fsiConfig = FsiEvaluationSession.GetDefaultConfiguration() let argv = [| "fsi.exe"; "--noninteractive" |] let session = FsiEvaluationSession.Create(fsiConfig, argv, inStream, outStream, errStream) interface IEvaluator with member _.Evaluate(code: string) = sbOut.Clear() |> ignore sbErr.Clear() |> ignore try let result, _warnings = session.EvalInteractionNonThrowing(code) let output = sbOut.ToString() let errors = sbErr.ToString().Trim() // Filtrera bort FSI:s automatiska typsignaturer från utskriften let cleanOutput = output.Replace("\r\n", "\n").Split('\n') |> Array.filter (fun line -> let l = line.TrimStart() not (l.StartsWith("val ") || l.StartsWith("type ") || l.StartsWith("module ") || l.StartsWith("namespace ")) ) |> String.concat "\n" |> fun s -> s.Trim() match result with | Choice1Of2 (Some fsiValue) -> // Plocka ut värdet. Om det är en sträng, undvik "%A" för att slippa citattecken. let valStr = if isNull fsiValue.ReflectionValue then "" else match fsiValue.ReflectionValue with | :? string as s -> s | v -> sprintf "%A" v if System.String.IsNullOrEmpty(cleanOutput) then valStr elif System.String.IsNullOrEmpty(valStr) then cleanOutput else cleanOutput + "\n" + valStr | Choice1Of2 None -> if not (System.String.IsNullOrEmpty(errors)) then cleanOutput + sprintf "%A" errors else cleanOutput | Choice2Of2 ex -> let fsiErrorOutput = if System.String.IsNullOrEmpty(errors) then "Ingen ytterligare FSI-output." else errors sprintf """
FSI Exekveringsfel!
Kod som kördes: %s

Exception: %s
FSI Stderr: 
%s
""" code ex.Message fsiErrorOutput with ex -> sprintf """
Kritiskt FSI-systemfel: %s
""" ex.Message