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Isaac Shoebottom 2025-03-26 14:28:05 -03:00
parent 9a5a5d683f
commit f6ada75b3c
1 changed files with 2 additions and 2 deletions
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Assignments/02.rkt
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@ -119,10 +119,10 @@
[(leqE l r) (num2 l r (boolT))]
[(varE s) (type-lookup s env)]
[(lamE name te body) (arrowT (interp-te te) (typecheck body (type-extend env name (interp-te te))))]
[(appE fn arg) (type-case Type (typecheck fn env)
[(appE fn arg) (type-case Type (typecheck fn env) ; todo use local to reduce duplicate calls
[(arrowT a b) (typecheck fn env)]
[else (error 'app "Function application must be a function")])]
[(ifE c t f) (if (equal? (typecheck c env) (boolT))
[(ifE c t f) (if (equal? (typecheck c env) (boolT)) ; todo use type case/local to reduce duplicate calls`
(if (equal? (typecheck t env) (typecheck f env))
(typecheck t env)
(error 'if "Both if conditions must be of the same type"))