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add error messages on some call failures #984

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add error messages on some call failures #984

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20 changes: 15 additions & 5 deletions src/phl/ecPhlCall.ml
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Original file line number Diff line number Diff line change
Expand Up @@ -500,12 +500,22 @@ let mk_inv_spec (_pf : proofenv) env inv fl fr =
let defl = EcEnv.Fun.by_xpath fl env in
let defr = EcEnv.Fun.by_xpath fr env in
let sigl, sigr = defl.f_sig, defr.f_sig in
let testty =
EcReduction.EqTest.for_type env sigl.fs_arg sigr.fs_arg
&& EcReduction.EqTest.for_type env sigl.fs_ret sigr.fs_ret
in
let ppe = EcPrinting.PPEnv.ofenv env in

if not (EcReduction.EqTest.for_type env sigl.fs_arg sigr.fs_arg)
then tc_error _pf "@[<v 2>the procedures do not have the same argument types:@,\
Left side: @[<h>%a@]@,\
Right side: @[<h>%a@]@]"
(EcPrinting.pp_type ppe) sigl.fs_arg
(EcPrinting.pp_type ppe) sigr.fs_arg;

if not (EcReduction.EqTest.for_type env sigl.fs_ret sigr.fs_ret)
then tc_error _pf "@[<v 2>the procedures do not have the same return types:@,\
Left side: @[<h>%a@]@,\
Right side: @[<h>%a@]@]"
(EcPrinting.pp_type ppe) sigl.fs_ret
(EcPrinting.pp_type ppe) sigr.fs_ret;

if not testty then raise EqObsInError;
let eq_params =
ts_inv_eqparams
sigl.fs_arg sigl.fs_anames ml
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