diff options
| author | Pierre-Marie Pédrot | 2019-02-04 15:52:30 +0100 |
|---|---|---|
| committer | Pierre-Marie Pédrot | 2019-02-28 18:58:06 +0100 |
| commit | 7b724139a09c5d875131c5861a32d225d5b4b07b (patch) | |
| tree | 3f556cc57d2b9500ecd972f97b2a25824c491dbe /tactics/eqschemes.ml | |
| parent | 8b42c73a6a3b417e848952e7510e27d74e6e1758 (diff) | |
Constructor type information uses the expanded form.
It used to simply remember the normal form of the type of the constructor.
This is somewhat problematic as this is ambiguous in presence of
let-bindings. Rather, we store this data in a fully expanded way, relying
on rel_contexts.
Probably fixes a crapload of bugs with inductive types containing
let-bindings, but it seems that not many were reported in the bugtracker.
Diffstat (limited to 'tactics/eqschemes.ml')
| -rw-r--r-- | tactics/eqschemes.ml | 6 |
1 files changed, 3 insertions, 3 deletions
diff --git a/tactics/eqschemes.ml b/tactics/eqschemes.ml index b12018cd66..3c1115d056 100644 --- a/tactics/eqschemes.ml +++ b/tactics/eqschemes.ml @@ -138,7 +138,7 @@ let get_sym_eq_data env (ind,u) = let realsign,_ = List.chop mip.mind_nrealdecls arityctxt in if List.exists is_local_def realsign then error "Inductive equalities with local definitions in arity not supported."; - let constrsign,ccl = decompose_prod_assum mip.mind_nf_lc.(0) in + let constrsign,ccl = mip.mind_nf_lc.(0) in let _,constrargs = decompose_app ccl in if not (Int.equal (Context.Rel.length constrsign) (Context.Rel.length mib.mind_params_ctxt)) then error "Constructor must have no arguments"; (* This can be relaxed... *) @@ -173,7 +173,7 @@ let get_non_sym_eq_data env (ind,u) = let realsign,_ = List.chop mip.mind_nrealdecls arityctxt in if List.exists is_local_def realsign then error "Inductive equalities with local definitions in arity not supported"; - let constrsign,ccl = decompose_prod_assum mip.mind_nf_lc.(0) in + let constrsign,ccl = mip.mind_nf_lc.(0) in let _,constrargs = decompose_app ccl in if not (Int.equal (Context.Rel.length constrsign) (Context.Rel.length mib.mind_params_ctxt)) then error "Constructor must have no arguments"; @@ -776,7 +776,7 @@ let build_congr env (eq,refl,ctx) ind = error "Inductive equalities with local definitions in arity not supported."; let env_with_arity = push_rel_context arityctxt env in let ty = RelDecl.get_type (lookup_rel (mip.mind_nrealargs - i + 1) env_with_arity) in - let constrsign,ccl = decompose_prod_assum mip.mind_nf_lc.(0) in + let constrsign,ccl = mip.mind_nf_lc.(0) in let _,constrargs = decompose_app ccl in if not (Int.equal (Context.Rel.length constrsign) (Context.Rel.length mib.mind_params_ctxt)) then error "Constructor must have no arguments"; |