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|
(*Generated by Lem from assert_extra.lem.*)
open HolKernel Parse boolLib bossLib;
open stringTheory lemTheory;
val _ = numLib.prefer_num();
val _ = new_theory "lem_assert_extra"
(*open import {ocaml} `Xstring`*)
(*open import {hol} `stringTheory` `lemTheory`*)
(*open import {coq} `Coq.Strings.Ascii` `Coq.Strings.String`*)
(*open import {isabelle} `$LIB_DIR/Lem`*)
(* ------------------------------------ *)
(* failing with a proper error message *)
(* ------------------------------------ *)
(*val failwith: forall 'a. string -> 'a*)
(* ------------------------------------ *)
(* failing without an error message *)
(* ------------------------------------ *)
(*val fail : forall 'a. 'a*)
val _ = Define `
((fail:'a)= (failwith "fail"))`;
(* ------------------------------------- *)
(* assertions *)
(* ------------------------------------- *)
(*val ensure : bool -> string -> unit*)
val _ = Define `
((ensure:bool -> string -> unit) test msg=
(if test then
()
else
failwith msg))`;
val _ = export_theory()
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