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(.module:
lux
(lux (control monad
["ex" exception #+ exception:])
[io #+ Process]
(data ["e" error]
[text "text/" Eq<Text>]
text/format)
[macro]
[host]
(world [file #+ File]
[blob #+ Blob])))
(host.import java/lang/String
(new [(Array byte)]))
(def: host-extension Text ".jvm")
(def: lux-extension Text ".lux")
(do-template [<name>]
[(exception: #export (<name> {message Text})
message)]
[File-Not-Found]
[Module-Not-Found]
[Could-Not-Prepare-Module]
)
(def: sanitize
(-> Text Text)
(text.replace-all "/" file.separator))
(def: (find-source dirs path)
(-> (List File) Text (Process [Text File]))
(case dirs
#.Nil
(io.fail (ex.construct File-Not-Found path))
(#.Cons dir dirs')
(do io.Monad<Process>
[#let [file (format dir file.separator path)]
? (file.exists? file)]
(if ?
(wrap [path file])
(find-source dirs' path)))))
(def: (either left right)
(All [a] (-> (Process a) (Process a) (Process a)))
(do io.Monad<IO>
[?output left]
(case ?output
(#e.Success output)
(wrap (#e.Success output))
(#e.Error error)
right)))
(def: #export blob-to-text
(-> Blob Text)
(|>> [] String::new))
(def: #export (read dirs name)
(-> (List File) Text (Process [File Text]))
(do io.Monad<Process>
[[path file] (: (Process [Text File])
($_ either
(find-source dirs (format name host-extension lux-extension))
(find-source dirs (format name lux-extension))
(io.fail (ex.construct Module-Not-Found name))))
blob (file.read file)]
(wrap [path (blob-to-text blob)])))
(def: #export (platform-target root-target)
(-> File File)
(format root-target "/" (for {"JVM" "jvm"
"JS" "js"})))
(def: #export (prepare-target target-dir)
(-> File (Process Bool))
(do io.Monad<Process>
[_ (file.make-directory (sanitize target-dir))]
(file.make-directory (sanitize (platform-target target-dir)))))
(def: #export (prepare-module target-dir module-name)
(-> File Text (Process Unit))
(do io.Monad<Process>
[#let [module-path (|> module-name
(format (platform-target target-dir) "/")
sanitize)]
module-exists? (file.exists? module-path)
made-dir? (if module-exists?
(wrap module-exists?)
(file.make-directory module-path))]
(if made-dir?
(wrap [])
(io.fail (ex.construct Could-Not-Prepare-Module
(format "Module: " module-name "\n"
"Target: " target-dir "\n"))))))
(def: #export (write target name content)
(-> File Text Blob (Process Unit))
(|> name
(format (platform-target target) "/")
sanitize
(file.write content)))
(def: #export (module target-dir module-dir)
(-> File File (Maybe Text))
(case (text.split-with target-dir module-dir)
(#.Some ["" post])
(let [raw (text.replace-all file.separator "/" post)]
(if (text.starts-with? "/" raw)
(text.clip' +1 raw)
(#.Some raw)))
_
#.None))
(def: #export (file target-dir file-name)
(-> File Text File)
(format target-dir file.separator (sanitize file-name)))
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