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(.module:
[lux #*
[abstract
[monad (#+ do)]
["." equivalence (#+ Equivalence)]]
[control
["." parser]]
[data
[number
["." int]
["." frac]]
["." text]
[format
["." binary (#+ Format) ("#;." monoid)]]
[collection
["." row (#+ Row)]]]
[type
abstract]]
["." / #_
["#." tag ("#;." equivalence)]
["." // #_
[descriptor (#+ Descriptor)]
["#." index (#+ Index)]
[encoding
[unsigned (#+ U4)]]]])
(type: #export UTF8 Text)
(def: utf8-format
(Format UTF8)
binary.utf8/16)
(abstract: #export Class
{}
(Index UTF8)
(def: #export class
(-> (Index UTF8) Class)
(|>> :abstraction))
(def: #export class-equivalence
(Equivalence Class)
(:: equivalence.contravariant map-1
(|>> :representation)
//index.equivalence))
(def: class-format
(Format Class)
(binary.adapt (|>> :abstraction)
(|>> :representation)
//index.format))
)
(abstract: #export (Value kind)
{}
kind
(def: #export value
(All [kind] (-> (Value kind) kind))
(|>> :representation))
(def: #export (value-equivalence Equivalence<kind>)
(All [kind]
(-> (Equivalence kind)
(Equivalence (Value kind))))
(:: equivalence.contravariant map-1
(|>> :representation)
Equivalence<kind>))
(template [<constructor> <type> <marker>]
[(type: #export <type> (Value <marker>))
(def: #export <constructor>
(-> <marker> <type>)
(|>> :abstraction))]
[integer Integer U4]
[long Long .Int]
[float Float Nothing]
[double Double Frac]
[string String (Index UTF8)]
)
(template [<name> <type> <read> <write> <base>]
[(def: <name>
(Format <type>)
(binary.adapt (|>> <read> :abstraction)
(|>> :representation <write>)
<base>))]
[long-format Long .int (<|) binary.bits/64]
[double-format Double frac.bits-to-frac frac.frac-to-bits binary.bits/64]
[string-format String (<|) (<|) //index.format]
)
)
(type: #export Name-And-Type
{#name (Index UTF8)
#descriptor (Index (Descriptor Any))})
(type: #export Reference
{#class (Index Class)
#name-and-type (Index Name-And-Type)})
(template [<type> <equivalence> <format>]
[(def: #export <equivalence>
(Equivalence <type>)
($_ equivalence.product
//index.equivalence
//index.equivalence))
(def: #export <format>
(Format <type>)
($_ binary.and
//index.format
//index.format))]
[Name-And-Type name-and-type-equivalence name-and-type-format]
[Reference reference-equivalence reference-format]
)
(type: #export Constant
(#UTF8 UTF8)
(#Long Long)
(#Double Double)
(#Class Class)
(#String String)
(#Field Reference)
(#Method Reference)
(#Interface-Method Reference)
(#Name-And-Type Name-And-Type))
(def: #export equivalence
(Equivalence Constant)
## TODO: Delete the explicit "structure" and use the combinator
## version below as soon as the new format for variants is implemented.
(structure
(def: (= reference sample)
(case [reference sample]
(^template [<tag> <equivalence>]
[(<tag> reference) (<tag> sample)]
(:: <equivalence> = reference sample))
([#UTF8 text.equivalence]
[#Long (..value-equivalence int.equivalence)]
[#Double (..value-equivalence frac.equivalence)]
[#Class ..class-equivalence]
[#String (..value-equivalence //index.equivalence)]
[#Field ..reference-equivalence]
[#Method ..reference-equivalence]
[#Interface-Method ..reference-equivalence]
[#Name-And-Type ..name-and-type-equivalence])
_
false)))
## ($_ equivalence.sum
## ## #UTF8
## text.equivalence
## ## #Long
## (..value-equivalence int.equivalence)
## ## #Double
## (..value-equivalence frac.equivalence)
## ## #Class
## ..class-equivalence
## ## #String
## (..value-equivalence //index.equivalence)
## ## #Field
## ..reference-equivalence
## ## #Method
## ..reference-equivalence
## ## #Interface-Method
## ..reference-equivalence
## ## #Name-And-Type
## ..name-and-type-equivalence
## )
)
(def: #export format
(Format Constant)
(with-expansions [<constants> (as-is [#UTF8 /tag.utf8 ..utf8-format]
## TODO: Integer
## TODO: Float
[#Long /tag.long ..long-format]
[#Double /tag.double ..double-format]
[#Class /tag.class ..class-format]
[#String /tag.string ..string-format]
[#Field /tag.field ..reference-format]
[#Method /tag.method ..reference-format]
[#Interface-Method /tag.interface-method ..reference-format]
[#Name-And-Type /tag.name-and-type ..name-and-type-format]
## TODO: Method-Handle
## TODO: Method-Type
## TODO: Invoke-Dynamic
)]
{#binary.reader (do parser.monad
[tag (get@ #binary.reader /tag.format)]
(`` (cond (~~ (template [<case> <tag> <format>]
[(/tag;= <tag> tag)
(:: @ map (|>> <case>) (get@ #binary.reader <format>))]
<constants>))
## else
(parser.fail "Cannot parse constant."))))
#binary.writer (function (_ value)
(case value
(^template [<case> <tag> <format>]
(<case> value)
(binary;compose ((get@ #binary.writer /tag.format) <tag>)
((get@ #binary.writer <format>) value)))
(<constants>)
))}))
|
