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(.module:
[library
[lux #*
[abstract
[equivalence (#+ Equivalence)]]
[control
["<>" parser
["<b>" binary (#+ Parser)]]]
[data
["." product]
["." name]
["." text
["%" format (#+ format)]]
[format
["." binary (#+ Writer)]]]
[math
[number
["." nat]]]]]
[////
[version (#+ Version)]])
(type: #export Signature
{#name Name
#version Version})
(def: #export equivalence
(Equivalence Signature)
(product.equivalence name.equivalence nat.equivalence))
(def: #export (description signature)
(-> Signature Text)
(format (%.name (get@ #name signature)) " " (%.nat (get@ #version signature))))
(def: #export writer
(Writer Signature)
(binary.and (binary.and binary.text binary.text)
binary.nat))
(def: #export parser
(Parser Signature)
(<>.and (<>.and <b>.text <b>.text)
<b>.nat))
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