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Allow to declare instances on (fun ... => key ...) #594

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Allow to declare instances on (fun ... => key ...) #594

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4 changes: 4 additions & 0 deletions HB/common/stdpp.elpi
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Original file line number Diff line number Diff line change
Expand Up @@ -302,6 +302,10 @@ term->cs-pattern (sort U) (cs-sort U) :- !.
term->cs-pattern T (cs-gref GR) :- coq.term->gref T GR, !.
term->cs-pattern T _ :- coq.error T "HB database: is not a valid canonical key".

func coq.term->gref term -> gref.
:before "term->gref:fail"
coq.term->gref (fun N Ty F) GR :- !, @pi-decl N Ty x\ coq.term->gref (F x) GR.

% ---------------------------------------------------------------------
% kit for closing a term by abstracting evars with lambdas
% we use constraints to attach to holes a number
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