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|
(.module:
[library
[lux (#- and)
[data
["." text
["%" format (#+ format)]]
[collection
["." list ("#\." functor)]]]
[type
abstract]
[world
[net (#+ URL)]]]])
## https://www.markdownguide.org/basic-syntax/
(def: safe
(-> Text Text)
(|>> (text.replace_all "\" "\\")
(text.replace_all "`" "\`")
(text.replace_all "*" "\*")
(text.replace_all "_" "\_")
(text.replace_all "{" "\{")
(text.replace_all "}" "\}")
(text.replace_all "[" "\[")
(text.replace_all "]" "\]")
(text.replace_all "(" "\(")
(text.replace_all ")" "\)")
(text.replace_all "#" "\#")
(text.replace_all "+" "\+")
(text.replace_all "-" "\-")
(text.replace_all "." "\.")
(text.replace_all "!" "\!")))
(abstract: .public Span {} Any)
(abstract: .public Block {} Any)
(abstract: .public (Markdown brand)
{}
Text
(def: .public empty
Markdown
(:abstraction ""))
(def: .public text
(-> Text (Markdown Span))
(|>> ..safe :abstraction))
(def: blank_line
(format text.new_line text.new_line))
(template [<name> <prefix>]
[(def: .public (<name> content)
(-> Text Markdown)
(:abstraction (format <prefix> " " (..safe content) ..blank_line)))]
[heading/1 "#"]
[heading/2 "##"]
[heading/3 "###"]
[heading/4 "####"]
[heading/5 "#####"]
[heading/6 "######"]
)
(def: (block content)
(-> Text (Markdown Block))
(:abstraction (format content ..blank_line)))
(def: .public paragraph
(-> (Markdown Span) (Markdown Block))
(|>> :representation ..block))
(def: .public break
(Markdown Span)
(:abstraction (format " " text.new_line)))
(template [<name> <wrapper>]
[(def: .public <name>
(-> (Markdown Span) (Markdown Span))
(|>> :representation
(text.enclosed [<wrapper> <wrapper>])
:abstraction))]
[bold "**"]
[italic "_"]
)
(def: (prefix with)
(-> Text (-> Text Text))
(|>> (text.split_all_with text.new_line)
(list\map (function (_ line)
(if (text.empty? line)
line
(format with line))))
(text.join_with text.new_line)))
(def: indent
(-> Text Text)
(..prefix text.tab))
(def: .public quote
(-> (Markdown Block) (Markdown Block))
(|>> :representation
(..prefix "> ")
:abstraction))
(def: .public numbered_list
(-> (List [(Markdown Span) (Maybe (Markdown Block))])
(Markdown Block))
(|>> list.enumeration
(list\map (function (_ [idx [summary detail]])
(format (%.nat (inc idx)) ". " (:representation summary) text.new_line
(case detail
(#.Some detail)
(|> detail :representation ..indent (text.enclosed [text.new_line text.new_line]))
#.None
""))))
(text.join_with text.new_line)
..block))
(def: .public bullet_list
(-> (List [(Markdown Span) (Maybe (Markdown Block))])
(Markdown Block))
(|>> (list\map (function (_ [summary detail])
(format "*. " (:representation summary) text.new_line
(case detail
(#.Some detail)
(|> detail :representation ..indent (text.enclosed [text.new_line text.new_line]))
#.None
""))))
(text.join_with text.new_line)
..block))
(def: .public snippet
{#.doc "A snippet of code."}
(-> Text (Markdown Span))
(|>> ..safe (text.enclosed ["`" "`"]) :abstraction))
(def: .public code
{#.doc "A block of code."}
(-> Text (Markdown Block))
(let [open (format "```" text.new_line)
close (format text.new_line "```")]
(|>> (text.enclosed [open close]) ..block)))
(def: .public (image description url)
(-> Text URL (Markdown Span))
(:abstraction (format "![" (..safe description) "](" url ")")))
(def: .public horizontal_rule
(Markdown Block)
(..block "___"))
(def: .public (link description url)
(-> (Markdown Span) URL (Markdown Span))
(:abstraction (format "[" (:representation description) "](" url ")")))
(type: .public Email
Text)
(template [<name> <type>]
[(def: .public <name>
(-> <type> (Markdown Span))
(|>> (text.enclosed ["<" ">"]) :abstraction))]
[url URL]
[email Email]
)
(template [<name> <brand> <infix>]
[(def: .public (<name> pre post)
(-> (Markdown <brand>) (Markdown <brand>) (Markdown <brand>))
(:abstraction (format (:representation pre) <infix> (:representation post))))]
[and Span " "]
[then Block ""]
)
(def: .public markdown
(-> (Markdown Any) Text)
(|>> :representation))
)
|
