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more test cases, problem in Tree.newt

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Steve Dunham
2024-10-07 20:59:50 -07:00
parent 38b09ac028
commit 75015f094a
9 changed files with 108 additions and 16 deletions
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@@ -38,12 +38,15 @@ I have `Let` in the core language. Partly because I'd like this to make it into
I've got no idea what I'm doing here. I worked off of Jesper Cockx "Elaborating Dependent (Co)pattern Matching", leaving out codata for now.
For the dependent thing, I've change unify to return `VVar` constraints. I think this is an error typechecking on
RHS (meta solutions are handled separately). On the LHS, I'm rewriting the environment to turn the var from a bind
to a define. Unification has been tweaked to look up `VVar` in environment. Bind will hand back the same `VVar`.
For the dependent thing, I've change unify to return `VVar` constraints. I think such constraints would be an error while typechecking on RHS (meta solutions are handled separately). On the LHS, I'm rewriting the environment to turn the var from a bind to a define. Unification has been tweaked to look up `VVar` in environment. Bind will hand back the same `VVar`.
Some of this I could probably do with subst, but the RHS is `Raw`, it takes typechecking to turn it into a clean `Tm`,
and I need this information for the typechecking.
Some of this I could probably do with subst, but the RHS is `Raw`, it takes typechecking to turn it into a clean `Tm`, and I need this information for the typechecking. To substitute into the goal type for the RHS, I am now
doing a quote and eval to get case to expand. This is a bit of a stopgap because case is only eval'd when going
from `Tm` to `Val`. I think I'll need a way to eval a VCase during unification, as we do with function applications.
## Evaluation
Following kovacs, I'm putting `VVar` into context env when I go under binders. This avoids substitution.
## Issues