diff options
Diffstat (limited to '')
| -rw-r--r-- | stdlib/source/lux/type/auto.lux | 74 |
1 files changed, 43 insertions, 31 deletions
diff --git a/stdlib/source/lux/type/auto.lux b/stdlib/source/lux/type/auto.lux index d2b8cb1e5..27c1472c0 100644 --- a/stdlib/source/lux/type/auto.lux +++ b/stdlib/source/lux/type/auto.lux @@ -204,22 +204,32 @@ (set@ #tc;bindings (dict;from-list number;Hash<Nat> (get@ #;mappings type-vars))))] (#;Right [compiler context])))) -(def: (test-provision context dep alts) - (-> tc;Context Type (List [Ident Type]) (Lux (List Ident))) +(type: #rec Instance + {#constructor Ident + #dependencies (List Instance)}) + +(def: (test-provision provision context dep alts) + (-> (-> Compiler tc;Context Type (Check Instance)) + tc;Context Type (List [Ident Type]) + (Lux (List Instance))) (do Monad<Lux> [compiler compiler;get-compiler] (case (|> alts - (list;filter (lambda [[alt-name alt-type]] - (case (tc;run context - (do Monad<Check> - [_ (tc;check dep alt-type)] - (wrap []))) - (#;Left error) - false - - (#;Right _) - true))) - (List/map product;left)) + (List/map (lambda [[alt-name alt-type]] + (case (tc;run context + (do Monad<Check> + [[tvars alt-type] (concrete-type alt-type) + #let [[deps alt-type] (type;flatten-function alt-type)] + _ (tc;check dep alt-type) + context' tc;get-context + =deps (mapM @ (provision compiler context') deps)] + (wrap =deps))) + (#;Left error) + (list) + + (#;Right =deps) + (list [alt-name =deps])))) + List/join) #;Nil (compiler;fail (format "No candidates for provisioning: " (%type dep))) @@ -227,12 +237,12 @@ (wrap found)))) (def: (provision compiler context dep) - (-> Compiler tc;Context Type (Check Ident)) + (-> Compiler tc;Context Type (Check Instance)) (case (compiler;run compiler ($_ compiler;either - (do Monad<Lux> [alts local-env] (test-provision context dep alts)) - (do Monad<Lux> [alts local-structs] (test-provision context dep alts)) - (do Monad<Lux> [alts import-structs] (test-provision context dep alts)))) + (do Monad<Lux> [alts local-env] (test-provision provision context dep alts)) + (do Monad<Lux> [alts local-structs] (test-provision provision context dep alts)) + (do Monad<Lux> [alts import-structs] (test-provision provision context dep alts)))) (#;Left error) (tc;fail error) @@ -245,11 +255,11 @@ (:: Monad<Check> wrap winner) _ - (tc;fail (format "Too many candidates for provisioning: " (%type dep) " --- " (%list %ident candidates)))) + (tc;fail (format "Too many candidates for provisioning: " (%type dep) " --- " (%list (. %ident product;left) candidates)))) )) (def: (test-alternatives sig-type member-idx input-types output-type alts) - (-> Type Nat (List Type) Type (List [Ident Type]) (Lux (List [Ident (List Ident)]))) + (-> Type Nat (List Type) Type (List [Ident Type]) (Lux (List Instance))) (do Monad<Lux> [compiler compiler;get-compiler context compiler-type-context] @@ -262,7 +272,6 @@ _ (tc;check alt-type sig-type) member-type (find-member-type member-idx alt-type) _ (check-apply member-type input-types output-type) - =tvars (mapM @ tc;deref tvars) context' tc;get-context =deps (mapM @ (provision compiler context') deps)] (wrap =deps))) @@ -283,7 +292,7 @@ (wrap found)))) (def: (find-alternatives sig-type member-idx input-types output-type) - (-> Type Nat (List Type) Type (Lux (List [Ident (List Ident)]))) + (-> Type Nat (List Type) Type (Lux (List Instance))) (let [test (test-alternatives sig-type member-idx input-types output-type)] ($_ compiler;either (do Monad<Lux> [alts local-env] (test alts)) @@ -303,6 +312,15 @@ (All [a] (-> [a a] (List a))) (list l r)) +(def: (instance$ [constructor dependencies]) + (-> Instance AST) + (case dependencies + #;Nil + (ast;symbol constructor) + + _ + (` ((~ (ast;symbol constructor)) (~@ (List/map instance$ dependencies)))))) + (syntax: #export (::: [member s;symbol] [args (s;alt (s;seq (s;some s;symbol) s;end) (s;seq (s;some s;any) s;end))]) @@ -317,16 +335,10 @@ #;Nil (compiler;fail (format "No structure option could be found for member: " (%ident member))) - (#;Cons [chosen deps] #;Nil) - (let [chosen-inst (case deps - #;Nil - (ast;symbol chosen) - - _ - (` ((~ (ast;symbol chosen)) (~@ (List/map ast;symbol deps)))))] - (wrap (list (` (:: (~ chosen-inst) - (~ (ast;local-symbol (product;right member))) - (~@ (List/map ast;symbol args))))))) + (#;Cons chosen #;Nil) + (wrap (list (` (:: (~ (instance$ chosen)) + (~ (ast;local-symbol (product;right member))) + (~@ (List/map ast;symbol args)))))) _ (compiler;fail (format "Too many options available: " |