diff options
Diffstat (limited to 'new-luxc/source/luxc/lang/translation/ruby/case.jvm.lux')
-rw-r--r-- | new-luxc/source/luxc/lang/translation/ruby/case.jvm.lux | 174 |
1 files changed, 174 insertions, 0 deletions
diff --git a/new-luxc/source/luxc/lang/translation/ruby/case.jvm.lux b/new-luxc/source/luxc/lang/translation/ruby/case.jvm.lux new file mode 100644 index 000000000..016038d03 --- /dev/null +++ b/new-luxc/source/luxc/lang/translation/ruby/case.jvm.lux @@ -0,0 +1,174 @@ +(.module: + lux + (lux (control [monad #+ do] + ["ex" exception #+ exception:]) + (data text/format + (coll [list "list/" Fold<List>])) + [macro #+ "meta/" Monad<Meta>]) + (luxc [lang] + (lang ["ls" synthesis] + (host [ruby #+ Ruby Expression Statement]))) + [//] + (// [".T" runtime] + [".T" primitive] + [".T" reference])) + +(def: (expression-block body) + (-> Statement Expression) + (ruby.call (list) + (ruby.lambda #.None (list) + body))) + +(def: #export (translate-let translate register valueS bodyS) + (-> (-> ls.Synthesis (Meta Expression)) Nat ls.Synthesis ls.Synthesis + (Meta Expression)) + (do macro.Monad<Meta> + [valueO (translate valueS) + bodyO (translate bodyS)] + (wrap (expression-block + (ruby.block! (list (ruby.set! (list (referenceT.variable register)) valueO) + (ruby.return! bodyO))))))) + +(def: #export (translate-record-get translate valueS path) + (-> (-> ls.Synthesis (Meta Expression)) ls.Synthesis (List [Nat Bool]) + (Meta Expression)) + (do macro.Monad<Meta> + [valueO (translate valueS)] + (wrap (list/fold (function [[idx tail?] source] + (let [method (if tail? + runtimeT.product//right + runtimeT.product//left)] + (method source (ruby.int (:! Int idx))))) + valueO + path)))) + +(def: #export (translate-if testO thenO elseO) + (-> Expression Expression Expression Expression) + (expression-block + (ruby.if! testO + (ruby.return! thenO) + (ruby.return! elseO)))) + +(def: savepoint + Expression + "pm_cursor_savepoint") + +(def: cursor + Expression + "pm_cursor") + +(def: (push-cursor! value) + (-> Expression Statement) + (ruby.statement (ruby.send "push" (list value) cursor))) + +(def: save-cursor! + Statement + (ruby.statement + (ruby.send "push" + (list (ruby.array-range (ruby.int 0) (ruby.int -1) cursor)) + savepoint))) + +(def: restore-cursor! + Statement + (ruby.set! (list cursor) (ruby.send "pop" (list) savepoint))) + +(def: cursor-top + Expression + (ruby.nth (ruby.- (ruby.int 1) + (ruby.length cursor)) + cursor)) + +(def: pop-cursor! + Statement + (ruby.statement (ruby.send "pop" (list) cursor))) + +(def: pm-error + Expression + (ruby.string "PM-ERROR")) + +(exception: #export Unrecognized-Path) + +(def: (translate-pattern-matching' translate path) + (-> (-> ls.Synthesis (Meta Expression)) Code (Meta Expression)) + (case path + (^code ("lux case exec" (~ bodyS))) + (do macro.Monad<Meta> + [bodyO (translate bodyS)] + (wrap (ruby.return! bodyO))) + + (^code ("lux case pop")) + (meta/wrap pop-cursor!) + + (^code ("lux case bind" (~ [_ (#.Nat register)]))) + (meta/wrap (ruby.set! (list (referenceT.variable register)) cursor-top)) + + (^template [<tag> <format>] + [_ (<tag> value)] + (meta/wrap (ruby.when! (ruby.not (ruby.= (|> value <format>) cursor-top)) + (ruby.raise pm-error)))) + ([#.Nat (<| ruby.int (:! Int))] + [#.Int ruby.int] + [#.Deg (<| ruby.int (:! Int))] + [#.Bool ruby.bool] + [#.Frac ruby.float] + [#.Text ruby.string]) + + (^template [<pm> <getter>] + (^code (<pm> (~ [_ (#.Nat idx)]))) + (meta/wrap (push-cursor! (<getter> cursor-top (ruby.int (:! Int idx)))))) + (["lux case tuple left" runtimeT.product//left] + ["lux case tuple right" runtimeT.product//right]) + + (^template [<pm> <flag>] + (^code (<pm> (~ [_ (#.Nat idx)]))) + (meta/wrap (ruby.block! (list (ruby.set! (list "temp") (runtimeT.sum//get cursor-top (ruby.int (:! Int idx)) <flag>)) + (ruby.if! (ruby.not (ruby.= ruby.nil "temp")) + (push-cursor! "temp") + (ruby.raise pm-error)))))) + (["lux case variant left" ruby.nil] + ["lux case variant right" (ruby.string "")]) + + (^code ("lux case seq" (~ leftP) (~ rightP))) + (do macro.Monad<Meta> + [leftO (translate-pattern-matching' translate leftP) + rightO (translate-pattern-matching' translate rightP)] + (wrap (ruby.block! (list leftO rightO)))) + + (^code ("lux case alt" (~ leftP) (~ rightP))) + (do macro.Monad<Meta> + [leftO (translate-pattern-matching' translate leftP) + rightO (translate-pattern-matching' translate rightP)] + (wrap (ruby.begin! (ruby.block! (list save-cursor! + leftO)) + (list [(list) "alt_error" (ruby.if! (ruby.= pm-error (ruby.field "message" "alt_error")) + (ruby.block! (list restore-cursor! + rightO)) + (ruby.raise "alt_error"))])))) + + _ + (lang.throw Unrecognized-Path (%code path)) + )) + +(def: (translate-pattern-matching translate path) + (-> (-> ls.Synthesis (Meta Expression)) Code (Meta Expression)) + (do macro.Monad<Meta> + [pattern-matching (translate-pattern-matching' translate path)] + (wrap (ruby.begin! pattern-matching + (list [(list) "alt_error" + (ruby.if! (ruby.= pm-error (ruby.field "message" "alt_error")) + (ruby.raise (ruby.string "Invalid expression for pattern-matching.")) + (ruby.raise "alt_error"))]))))) + +(def: (initialize-pattern-matching stack-init) + (-> Expression Statement) + (ruby.block! (list (ruby.set! (list cursor) (ruby.array (list stack-init))) + (ruby.set! (list savepoint) (ruby.array (list)))))) + +(def: #export (translate-case translate valueS path) + (-> (-> ls.Synthesis (Meta Expression)) ls.Synthesis Code (Meta Expression)) + (do macro.Monad<Meta> + [valueO (translate valueS) + pattern-matching (translate-pattern-matching translate path)] + (wrap (expression-block + (ruby.block! (list (initialize-pattern-matching valueO) + pattern-matching)))))) |