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## Copyright (c) Eduardo Julian. All rights reserved.
## This Source Code Form is subject to the terms of the Mozilla Public License, v. 2.0.
## If a copy of the MPL was not distributed with this file,
## You can obtain one at http://mozilla.org/MPL/2.0/.
(;module:
lux
(lux (control monoid
eq
[ord]
monad
codec
hash)
(data (struct [list])
maybe)))
## [Functions]
(def: #export (size x)
(-> Text Nat)
(int-to-nat (_lux_proc ["jvm" "i2l"] [(_lux_proc ["jvm" "invokevirtual:java.lang.String:length:"] [x])])))
(def: #export (at idx x)
(-> Nat Text (Maybe Char))
(if (n.< (size x) idx)
(#;Some (_lux_proc ["jvm" "invokevirtual:java.lang.String:charAt:int"] [x (_lux_proc ["jvm" "l2i"] [(nat-to-int idx)])]))
#;None))
(def: #export (contains? sub text)
(-> Text Text Bool)
(_lux_proc ["jvm" "invokevirtual:java.lang.String:contains:java.lang.CharSequence"] [text sub]))
(do-template [<name> <proc>]
[(def: #export (<name> x)
(-> Text Text)
(_lux_proc ["jvm" <proc>] [x]))]
[lower-case "invokevirtual:java.lang.String:toLowerCase:"]
[upper-case "invokevirtual:java.lang.String:toUpperCase:"]
[trim "invokevirtual:java.lang.String:trim:"]
)
(def: #export (sub from to x)
(-> Nat Nat Text (Maybe Text))
(if (and (n.< to from)
(n.<= (size x) to))
(#;Some (_lux_proc ["jvm" "invokevirtual:java.lang.String:substring:int,int"]
[x
(_lux_proc ["jvm" "l2i"] [(nat-to-int from)])
(_lux_proc ["jvm" "l2i"] [(nat-to-int to)])]))
#;None))
(def: #export (sub' from x)
(-> Nat Text (Maybe Text))
(sub from (size x) x))
(def: #export (replace pattern value template)
(-> Text Text Text Text)
(_lux_proc ["jvm" "invokevirtual:java.lang.String:replace:java.lang.CharSequence,java.lang.CharSequence"] [template pattern value]))
(do-template [<common> <common-proc> <general> <general-proc>]
[(def: #export (<common> pattern x)
(-> Text Text (Maybe Nat))
(case (_lux_proc ["jvm" "i2l"] [(_lux_proc ["jvm" <common-proc>] [x pattern])])
-1 #;None
idx (#;Some (int-to-nat idx))))
(def: #export (<general> pattern from x)
(-> Text Nat Text (Maybe Nat))
(if (n.< (size x) from)
(case (_lux_proc ["jvm" "i2l"] [(_lux_proc ["jvm" <general-proc>] [x pattern (_lux_proc ["jvm" "l2i"] [(nat-to-int from)])])])
-1 #;None
idx (#;Some (int-to-nat idx)))
#;None))]
[index-of "invokevirtual:java.lang.String:indexOf:java.lang.String" index-of' "invokevirtual:java.lang.String:indexOf:java.lang.String,int"]
[last-index-of "invokevirtual:java.lang.String:lastIndexOf:java.lang.String" last-index-of' "invokevirtual:java.lang.String:lastIndexOf:java.lang.String,int"]
)
(def: #export (starts-with? prefix x)
(-> Text Text Bool)
(case (index-of prefix x)
(#;Some +0)
true
_
false))
(def: #export (ends-with? postfix x)
(-> Text Text Bool)
(case (last-index-of postfix x)
(#;Some n)
(n.= (size x)
(n.+ (size postfix) n))
_
false))
(def: #export (split at x)
(-> Nat Text (Maybe [Text Text]))
(if (n.<= (size x) at)
(let [pre (_lux_proc ["jvm" "invokevirtual:java.lang.String:substring:int,int"] [x (_lux_proc ["jvm" "l2i"] [0]) (_lux_proc ["jvm" "l2i"] [(nat-to-int at)])])
post (_lux_proc ["jvm" "invokevirtual:java.lang.String:substring:int"] [x (_lux_proc ["jvm" "l2i"] [(nat-to-int at)])])]
(#;Some [pre post]))
#;None))
(def: #export (split-with token sample)
(-> Text Text (Maybe [Text Text]))
(do Monad<Maybe>
[index (index-of token sample)
[pre post'] (split index sample)
[_ post] (split (size token) post')]
(wrap [pre post])))
(def: #export (split-all-with token sample)
(-> Text Text (List Text))
(case (split-with token sample)
(#;Some [pre post])
(#;Cons pre (split-all-with token post))
#;None
(#;Cons sample #;Nil)))
(def: #export split-lines
(split-all-with "\n"))
## [Structures]
(struct: #export _ (Eq Text)
(def: (= test subject)
(_lux_proc ["jvm" "invokevirtual:java.lang.Object:equals:java.lang.Object"] [subject test])))
(struct: #export _ (ord;Ord Text)
(def: eq Eq<Text>)
(do-template [<name> <op>]
[(def: (<name> test subject)
(<op> 0
(_lux_proc ["jvm" "i2l"] [(_lux_proc ["jvm" "invokevirtual:java.lang.String:compareTo:java.lang.String"] [subject test])])))]
[< i.<]
[<= i.<=]
[> i.>]
[>= i.>=]))
(struct: #export _ (Monoid Text)
(def: unit "")
(def: (append x y)
(_lux_proc ["jvm" "invokevirtual:java.lang.String:concat:java.lang.String"] [x y])))
(open Monoid<Text>)
(struct: #export _ (Codec Text Text)
(def: (encode original)
(let [escaped (|> original
(replace "\\" "\\\\")
(replace "\t" "\\t")
(replace "\b" "\\b")
(replace "\n" "\\n")
(replace "\r" "\\r")
(replace "\f" "\\f")
(replace "\"" "\\\"")
)]
($_ append "\"" escaped "\"")))
(def: (decode input)
(if (and (starts-with? "\"" input)
(ends-with? "\"" input))
(case (sub +1 (n.dec (size input)) input)
(#;Some input')
(|> input'
(replace "\\\\" "\\")
(replace "\\t" "\t")
(replace "\\b" "\b")
(replace "\\n" "\n")
(replace "\\r" "\r")
(replace "\\f" "\f")
(replace "\\\"" "\"")
#;Some)
#;None
(#;Left "Couldn't decode text"))
(#;Left "Couldn't decode text"))))
(struct: #export _ (Hash Text)
(def: eq Eq<Text>)
(def: hash
(|>. []
(_lux_proc ["jvm" "invokevirtual:java.lang.Object:hashCode:"])
[]
(_lux_proc ["jvm" "i2l"])
int-to-nat)))
(def: #export concat
(-> (List Text) Text)
(let [(^open) list;Fold<List>
(^open) Monoid<Text>]
(|>. list;reverse (fold append unit))))
(def: #export (join-with sep texts)
(-> Text (List Text) Text)
(|> texts (list;interpose sep) concat))
(def: #export (empty? text)
(-> Text Bool)
(case text
"" true
_ false))
(def: #export (replace-once pattern value template)
(-> Text Text Text Text)
(default template
(do Monad<Maybe>
[[pre post] (split-with pattern template)]
(let [(^open) Monoid<Text>]
(wrap ($_ append pre value post))))))
(def: #export (enclose [left right] content)
{#;doc "Surrounds the given content text with left and right side additions."}
(-> [Text Text] Text Text)
(let [(^open) Monoid<Text>]
($_ append left content right)))
(def: #export (enclose' boundary content)
{#;doc "Surrounds the given content text with the same boundary text."}
(-> Text Text Text)
(enclose [boundary boundary] content))
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