Add Inhabited and BEq instances for Sigma types#5
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nek0las wants to merge 1 commit intorems-project:mainfrom
Open
Add Inhabited and BEq instances for Sigma types#5nek0las wants to merge 1 commit intorems-project:mainfrom
nek0las wants to merge 1 commit intorems-project:mainfrom
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Required to support the Sail Lean backend's existential type translation,
where Sail constructs like `{'n, 'n in {16,32}. (int('n), bits('n))}` are
represented as Lean Sigma types. Without `Inhabited (Sigma β)`, AST types
containing existential fields (e.g. union variants with constrained bitvector
widths) fail to derive `Inhabited`, which is needed for the generated Lean code
to compile.
`Repr` is omitted as it already exists in the Lean standard library.
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Required to support the Sail Lean backend's existential type translation, where Sail constructs like
{'n, 'n in {16,32}. (int('n), bits('n))}are represented as Lean Sigma types. WithoutInhabited (Sigma β), AST types containing existential fields (e.g. union variants with constrained bitvector widths) fail to deriveInhabited, which is needed for the generated Lean code to compile.Repris omitted as it already exists in the Lean standard library.