suzanne.soy/macrotypes
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add τ= in addition to τ⊑

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This commit is contained in:
Stephen Chang 2016-10-03 10:16:42 -04:00
parent 41491136b6
commit e8faad889b
2 changed files with 24 additions and 2 deletions
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4
turnstile/scribblings/reference.scrbl
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@ -78,7 +78,9 @@ and then press Control-@litchar{\}.
[expr-template ≫ expr-pattern ⇐ type-template]
[expr-template ≫ expr-pattern ⇐ key type-template]
[expr-template ≫ expr-pattern (⇐ key type-template) ooo ...]]
[type-relation (code:line [type-template τ⊑ type-template] ooo ...)
[type-relation (code:line [type-template τ= type-template] ooo ...)
(code:line [type-template τ= type-template #:for expr-template] ooo ...)
(code:line [type-template τ⊑ type-template] ooo ...)
(code:line [type-template τ⊑ type-template #:for expr-template] ooo ...)]
[conclusion [⊢ expr-template ⇒ key type-template]
[⊢ [_ ≫ expr-template ⇒ type-template]]

22
turnstile/turnstile.rkt
View File

@ -232,7 +232,7 @@
)
(define-splicing-syntax-class clause
#:attributes (pat)
#:datum-literals (τ⊑)
#:datum-literals (τ⊑ τ=)
[pattern :tc-clause]
[pattern [a τ⊑ b]
#:with pat
@ -254,6 +254,26 @@
#'(~post
(~fail #:unless (typechecks? #'[a ooo] #'[b ooo])
(typecheck-fail-msg/multi #'[b ooo] #'[a ooo] #'[e ooo])))]
[pattern [a τ= b]
#:with pat
#'(~post
(~fail #:unless ((current-type=?) #'a #'b)
(typecheck-fail-msg/1/no-expr #'b #'a)))]
[pattern [a τ= b #:for e]
#:with pat
#'(~post
(~fail #:unless ((current-type=?) #'a #'b)
(typecheck-fail-msg/1 #'b #'a #'e)))]
[pattern (~seq [a τ= b] ooo:elipsis)
#:with pat
#'(~post
(~fail #:unless (types=? #'[a ooo] #'[b ooo])
(typecheck-fail-msg/multi/no-exprs #'[b ooo] #'[a ooo])))]
[pattern (~seq [a τ= b #:for e] ooo:elipsis)
#:with pat
#'(~post
(~fail #:unless (types=? #'[a ooo] #'[b ooo])
(typecheck-fail-msg/multi #'[b ooo] #'[a ooo] #'[e ooo])))]
[pattern (~seq #:when condition:expr)
#:with pat
#'(~fail #:unless condition)]