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(.module:
[library
[lux "*"
["_" test {"+" [Test]}]
["[0]" debug]
["[0]" meta]
[abstract
[monad {"+" [do]}]]
[control
["[0]" try]
["[0]" exception]
[parser
["<[0]>" code]]]
[data
["[0]" bit ("[1]\[0]" equivalence)]
["[0]" text {"+" [Char]} ("[1]\[0]" equivalence)
["%" format {"+" [format]}]]
[collection
["[0]" set {"+" [Set]}]]]
[macro
[syntax {"+" [syntax:]}]
["[0]" code]
["[0]" template]]
[math
["[0]" random {"+" [Random]}]
[number {"+" [hex]}
["n" nat]]]]]
[\\library
["[0]" /
[//
["[0]" unicode "_"
["[1]" set]]]]])
(def: (range max min)
(-> Char Char (Random Char))
(let [range (n.- min max)]
(\ random.monad each
(|>> (n.% range) (n.+ min))
random.nat)))
(def: under_range
(Random Char)
(..range (debug.private /.ascii_bottom) 0))
(def: over_range
(Random Char)
(..range (hex "FFFF") (++ (debug.private /.ascii_top))))
(def: in_range
(Random Char)
(..range (++ (debug.private /.ascii_top)) (debug.private /.ascii_bottom)))
(def: ascii_range
(Random Char)
(..range (++ (debug.private /.ascii_top)) 0))
(def: valid_sigils
(Set Char)
(set.of_list n.hash
(list (debug.private /.\0_sigil)
(debug.private /.\a_sigil)
(debug.private /.\b_sigil)
(debug.private /.\t_sigil)
(debug.private /.\n_sigil)
(debug.private /.\v_sigil)
(debug.private /.\f_sigil)
(debug.private /.\r_sigil)
(debug.private /.\''_sigil)
(debug.private /.\\_sigil)
(debug.private /.\u_sigil))))
(syntax: (static_sample [])
(do meta.monad
[seed meta.seed
.let [[_ expected] (random.result (random.pcg_32 [seed seed])
(random.ascii 10))]]
(in (list (code.text expected)))))
(syntax: (static_escaped [un_escaped <code>.text])
(in (list (code.text (/.escaped un_escaped)))))
(def: .public test
Test
(<| (_.covering /._)
($_ _.and
(do random.monad
[ascii ..ascii_range]
(_.cover [/.escapable?]
(`` (if (or (~~ (template [<char>]
[(n.= (debug.private <char>) ascii)]
[/.\0] [/.\a] [/.\b] [/.\t]
[/.\n] [/.\v] [/.\f] [/.\r]
[/.\''] [/.\\])))
(/.escapable? ascii)
(bit\= (/.escapable? ascii)
(or (n.< (debug.private /.ascii_bottom) ascii)
(n.> (debug.private /.ascii_top) ascii)))))))
(do random.monad
[left (random.char unicode.character)
right (random.char unicode.character)]
(_.cover [/.escaped /.un_escaped]
(let [expected (format (text.of_char left) (text.of_char right))]
(if (or (/.escapable? left)
(/.escapable? right))
(let [escaped (/.escaped expected)]
(case (/.un_escaped escaped)
(#try.Success un_escaped)
(and (not (text\= escaped expected))
(text\= un_escaped expected))
(#try.Failure error)
false))
(text\= expected (/.escaped expected))))))
(do [! random.monad]
[dummy (|> (random.char unicode.character)
(\ ! each text.of_char))]
(_.cover [/.dangling_escape]
(case (/.un_escaped (format (/.escaped dummy) "\"))
(#try.Success _)
false
(#try.Failure error)
(exception.match? /.dangling_escape error))))
(do [! random.monad]
[dummy (|> (random.char unicode.character)
(random.only (|>> (set.member? ..valid_sigils) not))
(\ ! each text.of_char))]
(_.cover [/.invalid_escape]
(case (/.un_escaped (format "\" dummy))
(#try.Success _)
false
(#try.Failure error)
(exception.match? /.invalid_escape error))))
(do [! random.monad]
[too_short (|> (random.char unicode.character)
(\ ! each (n.% (hex "1000"))))
code (|> (random.unicode 4)
(random.only (function (_ code)
(case (\ n.hex decoded code)
(#try.Failure error) true
(#try.Success _) false))))]
(_.cover [/.invalid_unicode_escape]
(template.let [(!invalid <code>)
[(case (/.un_escaped (format "\u" <code>))
(#try.Success _)
false
(#try.Failure error)
(exception.match? /.invalid_unicode_escape error))]]
(and (!invalid (\ n.hex encoded too_short))
(!invalid code)))))
(_.cover [/.literal]
(with_expansions [<example> (..static_sample)]
(text\= <example> (`` (/.literal (~~ (..static_escaped <example>)))))))
)))
|
