...that also involve contracts.
That code was previously not marked as lifted by the contract system, and
thus was not ignored by TR. But TR was not giving it a type, which made the
optimizer unhappy, now that it looks at the types of everything.
Most unit forms are supported, including most of the "infer" forms that
infer imports/exports/linkages from the current context.
Notably, none of the structural linking forms for units are supported, and
`define-unit-binding` is also currently unsupported.
When identifiers provided by typed modules were used in
certain submodules of the form (module* n #f ...) or were
used by modules implemented in a language defined by TR,
the wrong redirection was used in the expansion.
The reason was because TR's identifier redirection decided
whether it was in a typed or untyped context at module visit
time, but that's too early in the cases above.
(because TR's #%module-begin may not have begun expanding yet)
The fix uses a rename-transformer that delays the decision
to use the typed or untyped identifier until expansion time.
Closes GH issue #163 and #181
Closes PR 15118
Moves `get-alternate` since its only user is the require-contract
module. In addition, it appears that one of the cases in the
conditional in its body is unnecessary. This likely means that
the extra machinery for typed-renamers are not needed at all.
Also adds a test for `require/typed` of a typed module
Only parse and use the type annotations if they are present on
all fold variables. This matches the default for other forms in TR.
Also, this will usually result in a "insufficient type information"
message which is more helpful than if TR chose some default type.
Closes PR 15138
Closes PR 14893
I had forgotten to adjust the define-struct macro to work
like the struct macro for the #:prefab keyword, which made
TR think prefabs were ordinary structs.
Closes GH issue #188
Instead of local-expanding the entire top-level forms at
once, wrap expressions in a top-level begin in trampolining
macro forms. This allows the typechecker to trampoline back
to the evaluator, which is necessary to declare/register
declarations made in a top-level begin.
The point of this change is to eliminate top-level hacks
and faciliate various macros that need to communicate using
multiple top-level forms.
