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improve error message missing mixin dep #478

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Dec 12, 2024
Merged

improve error message missing mixin dep #478

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521adf9
improve error message missing mixin dep
gares Dec 12, 2024
9d592ee
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gares Dec 12, 2024
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2 changes: 1 addition & 1 deletion HB/common/synthesis.elpi
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Expand Up @@ -243,7 +243,7 @@ instantiate-all-these-mixin-args (fun _ Tm F) T ML R :-
factory-alias->gref TmGR M,
std.mem! ML M,
!,
mixin-for T M X, !,
if (mixin-for T M X) true (coq.error "HB: Unable to find mixin" {nice-gref->string M} "on subject" {coq.term->string T}), !,
instantiate-all-these-mixin-args (F X) T ML R.
instantiate-all-these-mixin-args (fun N Ty F) T ML (fun N Ty FX) :- !,
@pi-decl N Ty m\ instantiate-all-these-mixin-args (F m) T ML (FX m).
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3 changes: 2 additions & 1 deletion Makefile.test-suite.coq.local
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Expand Up @@ -23,4 +23,5 @@ post-all::
$(call DIFF, tests/howto.v)
$(call DIFF, tests/missing_join_error.v)
$(call DIFF, tests/not_same_key.v)
$(call DIFF, tests/hnf.v)
$(call DIFF, tests/hnf.v)
$(call DIFF, tests/err_miss_dep.v)
6 changes: 6 additions & 0 deletions tests/err_miss_dep.v
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@@ -0,0 +1,6 @@
From HB Require Import structures.
HB.mixin Record IsAddComoid A := {}.
HB.structure Definition AddComoid := { A of IsAddComoid A }.
HB.mixin Record IsAbelianGrp A of IsAddComoid A := {}.
HB.structure Definition AbelianGrp := { A of IsAbelianGrp A }.
Fail HB.mixin Record IsRing K of IsAbelianGrp K (*& IsAddComoid K*) := {}.
2 changes: 2 additions & 0 deletions tests/err_miss_dep.v.out
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@@ -0,0 +1,2 @@
The command has indeed failed with message:
HB: Unable to find mixin err_miss_dep_IsAddComoid on subject K
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