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|
(;module:
lux
(lux (control codec
monad)
(data [text]
(text format
["l" lexer "l/" Monad<Lexer>])
[number]
error
(coll [list "L/" Functor<List>])))
["&" ../common]
[luxc ["&;" parser]])
(def: dummy-cursor Cursor ["" +0 +0])
(do-template [<name> <code>]
[(def: <name> &;Signal <code>)]
[ident-signal "@"]
[bool-signal "B"]
[nat-signal "N"]
[int-signal "I"]
[deg-signal "D"]
[real-signal "R"]
[text-signal "T"]
[list-signal "%"]
[dict-signal "#"]
)
(def: (encode-ident [module name])
(-> Ident Text)
(format ident-signal
module &;ident-separator name
&;stop-signal))
(def: (encode-text value)
(-> Text Text)
(format text-signal
(%t value)
&;stop-signal))
(def: (encode-ann-value value)
(-> Ann-Value Text)
(case value
(^template [<tag> <signal> <encoder>]
(<tag> value)
(format <signal>
(<encoder> value)
&;stop-signal))
([#;BoolA bool-signal %b]
[#;NatA nat-signal %n]
[#;IntA int-signal %i]
[#;DegA deg-signal %d]
[#;RealA real-signal %r]
[#;TextA text-signal %t]
[#;IdentA ident-signal %ident]
[#;ListA list-signal (&;encode-list encode-ann-value)]
[#;DictA dict-signal (&;encode-list (function [[k v]]
(format (encode-text k)
(encode-ann-value v))))])))
(def: ann-value-decoder
(l;Lexer Ann-Value)
(with-expansions
[<simple> (do-template [<tag> <lexer> <signal>]
[(do l;Monad<Lexer>
[])])]
($_ l;either
<simple>
(|> ... (l;after (l;text bool-signal)))
)))
(def: encode-anns
(-> Anns Text)
(&;encode-list (function [[ident value]]
(format (encode-ident ident)
(encode-ann-value value)))))
(struct: #export _ (Codec Text Anns)
(def: encode encode-anns)
(def: decode decode-anns))
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