Prevent repl from inserting inferred 'Sort's into context #1318
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To type-check and evaluate inputs in the context of previous
inputs, the repl constructs a let-expression that includes
the previous input and variable assignments as bindings.
Previously these bindings would also be annotated with
inferred types. For example a session like
⊢ Kind
⊢ "foo"
would be represented as
let it : Sort = Kind
in "foo"
However `Sort` does not typecheck as an annotation of a let-binding,
resulting in the confusing message
Error: ❰Sort❱ has no type, kind, or sort
Constructing the let-bindings without the type annotations fixes the
problem.
Fixes #1193.
|
What I don't yet understand is why we have to store the inferred types in |
|
@sjakobi: No good reason. The only reason we stored them was because we had access to them |
Gabriella439
approved these changes
Sep 15, 2019
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To type-check and evaluate inputs in the context of previous
inputs, the repl constructs a let-expression that includes
the previous input and variable assignments as bindings.
Previously these bindings would also be annotated with
inferred types. For example a session like
would be represented as
However
Sortdoes not typecheck as an annotation of a let-binding,resulting in the confusing message
Constructing the let-bindings without the type annotations fixes the
problem.
Fixes #1193.