/- Copyright (c) 2021 Henrik Böving. All rights reserved. Released under Apache 2.0 license as described in the file LICENSE. Authors: Henrik Böving -/ import DocGen4.Process import DocGen4.IncludeStr import DocGen4.Output.ToHtmlFormat namespace DocGen4.Output open scoped DocGen4.Jsx open Lean System Widget Elab Process /-- The context used in the `BaseHtmlM` monad for HTML templating. -/ structure SiteBaseContext where /-- The module hierarchy as a tree structure. -/ hierarchy : Hierarchy /-- How far away we are from the page root, used for relative links to the root. -/ depthToRoot: Nat /-- The name of the current module if there is one, there exist a few pages that don't have a module name. -/ currentName : Option Name /-- The context used in the `HtmlM` monad for HTML templating. -/ structure SiteContext where /-- The full analysis result from the Process module. -/ result : AnalyzerResult /-- A function to link declaration names to their source URLs, usually Github ones. -/ sourceLinker : Name → Option DeclarationRange → String /-- Whether LeanInk is enabled -/ leanInkEnabled : Bool def setCurrentName (name : Name) (ctx : SiteBaseContext) := {ctx with currentName := some name} abbrev BaseHtmlT := ReaderT SiteBaseContext abbrev BaseHtmlM := BaseHtmlT Id abbrev HtmlT (m) := ReaderT SiteContext (BaseHtmlT m) abbrev HtmlM := HtmlT Id def HtmlT.run (x : HtmlT m α) (ctx : SiteContext) (baseCtx : SiteBaseContext) : m α := ReaderT.run x ctx |>.run baseCtx def HtmlM.run (x : HtmlM α) (ctx : SiteContext) (baseCtx : SiteBaseContext) : α := ReaderT.run x ctx |>.run baseCtx |>.run /-- Obtains the root URL as a relative one to the current depth. -/ def getRoot : BaseHtmlM String := do let rec go: Nat -> String | 0 => "./" | Nat.succ n' => "../" ++ go n' let d <- SiteBaseContext.depthToRoot <$> read return (go d) def getHierarchy : BaseHtmlM Hierarchy := do pure (←read).hierarchy def getCurrentName : BaseHtmlM (Option Name) := do pure (←read).currentName def getResult : HtmlM AnalyzerResult := do pure (←read).result def getSourceUrl (module : Name) (range : Option DeclarationRange): HtmlM String := do pure $ (←read).sourceLinker module range def leanInkEnabled? : HtmlM Bool := do pure (←read).leanInkEnabled /-- If a template is meant to be extended because it for example only provides the header but no real content this is the way to fill the template with content. This is untyped so HtmlM and BaseHtmlM can be mixed. -/ def templateExtends {α β} {m} [Bind m] (base : α → m β) (new : m α) : m β := new >>= base def templateLiftExtends {α β} {m n} [Bind m] [MonadLift n m] (base : α → n β) (new : m α) : m β := new >>= (monadLift ∘ base) /-- Returns the doc-gen4 link to a module name. -/ def moduleNameToLink (n : Name) : BaseHtmlM String := do let parts := n.components.map Name.toString pure $ (← getRoot) ++ (parts.intersperse "/").foldl (· ++ ·) "" ++ ".html" /-- Returns the HTML doc-gen4 link to a module name. -/ def moduleToHtmlLink (module : Name) : BaseHtmlM Html := do pure {module.toString} /-- Returns the LeanInk link to a module name. -/ def moduleNameToInkLink (n : Name) : BaseHtmlM String := do let parts := "src" :: n.components.map Name.toString pure $ (← getRoot) ++ (parts.intersperse "/").foldl (· ++ ·) "" ++ ".html" /-- Returns the path to the HTML file that contains information about a module. -/ def moduleNameToFile (basePath : FilePath) (n : Name) : FilePath := let parts := n.components.map Name.toString FilePath.withExtension (basePath / parts.foldl (· / ·) (FilePath.mk ".")) "html" /-- Returns the directory of the HTML file that contains information about a module. -/ def moduleNameToDirectory (basePath : FilePath) (n : Name) : FilePath := let parts := n.components.dropLast.map Name.toString basePath / parts.foldl (· / ·) (FilePath.mk ".") section Static /-! The following section contains all the statically included files that are used in documentation generation, notably JS and CSS ones. -/ def styleCss : String := include_str "../../static/style.css" def declarationDataCenterJs : String := include_str "../../static/declaration-data.js" def navJs : String := include_str "../../static/nav.js" def howAboutJs : String := include_str "../../static/how-about.js" def searchJs : String := include_str "../../static/search.js" def instancesJs : String := include_str "../../static/instances.js" def findJs : String := include_str "../../static/find/find.js" def mathjaxConfigJs : String := include_str "../../static/mathjax-config.js" def alectryonCss : String := include_str "../../static/alectryon/alectryon.css" def alectryonJs : String := include_str "../../static/alectryon/alectryon.js" def docUtilsCss : String := include_str "../../static/alectryon/docutils_basic.css" def pygmentsCss : String := include_str "../../static/alectryon/pygments.css" end Static /-- Returns the doc-gen4 link to a declaration name. -/ def declNameToLink (name : Name) : HtmlM String := do let res ← getResult let module := res.moduleNames[res.name2ModIdx.find! name |>.toNat]! pure $ (←moduleNameToLink module) ++ "#" ++ name.toString /-- Returns the HTML doc-gen4 link to a declaration name. -/ def declNameToHtmlLink (name : Name) : HtmlM Html := do pure {name.toString} /-- Returns the LeanInk link to a declaration name. -/ def declNameToInkLink (name : Name) : HtmlM String := do let res ← getResult let module := res.moduleNames[res.name2ModIdx.find! name |>.toNat]! pure $ (←moduleNameToInkLink module) ++ "#" ++ name.toString /-- Returns the HTML doc-gen4 link to a declaration name with "break_within" set as class. -/ def declNameToHtmlBreakWithinLink (name : Name) : HtmlM Html := do pure {name.toString} /-- In Lean syntax declarations the following pattern is quite common: ``` syntax term " + " term : term ``` that is, we place spaces around the operator in the middle. When the `InfoTree` framework provides us with information about what source token corresponds to which identifier it will thus say that `" + "` corresponds to `HAdd.hadd`. This is however not the way we want this to be linked, in the HTML only `+` should be linked, taking care of this is what this function is responsible for. -/ def splitWhitespaces (s : String) : (String × String × String) := Id.run do let front := "".pushn ' ' $ s.offsetOfPos (s.find (!Char.isWhitespace ·)) let mut s := s.trimLeft let back := "".pushn ' ' (s.length - s.offsetOfPos (s.find Char.isWhitespace)) s := s.trimRight (front, s, back) /-- Turns a `CodeWithInfos` object, that is basically a Lean syntax tree with information about what the identifiers mean, into an HTML object that links to as much information as possible. -/ partial def infoFormatToHtml (i : CodeWithInfos) : HtmlM (Array Html) := do match i with | TaggedText.text t => pure #[Html.escape t] | TaggedText.append tt => tt.foldlM (λ acc t => do pure $ acc ++ (←infoFormatToHtml t)) #[] | TaggedText.tag a t => match a.info.val.info with | Info.ofTermInfo i => match i.expr.consumeMData with | Expr.const name _ => match t with | TaggedText.text t => let (front, t, back) := splitWhitespaces $ Html.escape t let elem := {t} pure #[Html.text front, elem, Html.text back] | _ => -- TODO: Is this ever reachable? pure #[[←infoFormatToHtml t]] | _ => pure #[[←infoFormatToHtml t]] | _ => pure #[[←infoFormatToHtml t]] def baseHtmlHeadDeclarations : BaseHtmlM (Array Html) := do pure #[ , , , , , ] end DocGen4.Output