Commit 7769cda4 authored by Sylvain Dailler's avatar Sylvain Dailler

tactic apply: add appropriate exception. simplify code and allow inductive

As a side effect, this also modifies accordingly.

parent 8af3190f
module A
use import int.Int
inductive even (n: int) =
| Zero : even 0
| Pair : forall n. even n -> even (n+2)
goal a: even 4
inductive unit = tt : unit
goal g : unit
\ No newline at end of file
<?xml version="1.0" encoding="UTF-8"?>
<!DOCTYPE why3session PUBLIC "-//Why3//proof session v5//EN"
<why3session shape_version="4">
<file name="../126_apply.mlw" proved="true">
<theory name="A" proved="true">
<goal name="a" proved="true">
<transf name="replace" proved="true" arg1="4" arg2="(2+2)">
<goal name="a.0" proved="true">
<transf name="apply" proved="true" arg1="Pair">
<goal name="a.0.0" proved="true">
<transf name="replace" proved="true" arg1="2" arg2="(0 + 2)">
<goal name="a.0.0.0" proved="true">
<transf name="apply" proved="true" arg1="Pair">
<goal name="a." proved="true">
<transf name="apply" proved="true" arg1="Zero">
<goal name="a.0.0.1" proved="true">
<transf name="compute_in_goal" proved="true" >
<goal name="a.1" proved="true">
<transf name="compute_in_goal" proved="true" >
<goal name="g" proved="true">
<transf name="apply" proved="true" arg1="tt">
......@@ -247,6 +247,8 @@ let get_exception_message ses id e =
Pp.sprintf "Error in transformation %s. Cannot infer type of polymorphic element" s, Loc.dummy_position, ""
| Args_wrapper.Arg_qid_not_found q ->
Pp.sprintf "Following hypothesis was not found: %a \n" Typing.print_qualid q, Loc.dummy_position, ""
| Args_wrapper.Arg_pr_not_found pr ->
Pp.sprintf "Property not found: %a" (print_pr ses id) pr, Loc.dummy_position, ""
| Args_wrapper.Arg_error s ->
Pp.sprintf "Transformation raised a general error: %s \n" s, Loc.dummy_position, ""
| Args_wrapper.Arg_theory_not_found s ->
......@@ -43,20 +43,6 @@ let term_decl d =
| Decl ({d_node = Dprop (_pk, _pr, t)}) -> t
| _ -> raise (Arg_trans "term_decl")
let pr_prsymbol pr =
match pr with
| Decl {d_node = Dprop (_pk, pr, _t)} -> Some pr
| _ -> None
(* Looks for the hypothesis name and return it. If not found return None *)
let find_hypothesis (name:Ident.ident) task =
let ndecl = ref None in
let _ = task_iter (fun x -> if (
match (pr_prsymbol x.td_node) with
| None -> false
| Some pr -> Ident.id_equal pr.pr_name name) then ndecl := Some x) task in
(* [with_terms subst_ty subst lv wt]: Takes the list of variables in lv that are
not part of the substitution and try to match them with the list of values
from wt (ordered). *)
......@@ -156,13 +142,14 @@ let matching_with_terms ~trans_name slv lv left_term right_term withed_terms =
with values found in 2).
let apply pr withed_terms : Task.task Trans.tlist = (fun task ->
let name = pr.pr_name in
let kn = task_known task in
let g, task = Task.task_separate_goal task in
let g = term_decl g in
let d = find_hypothesis name task in
if d = None then raise (Arg_error "apply");
let d = Opt.get d in
let t = term_decl d in
let t =
match find_prop_decl kn pr with
| (_, t) -> t
| exception Not_found -> raise (Arg_pr_not_found pr)
let (lp, lv, nt) = intros t in
let slv = List.fold_left (fun acc v -> Svs.add v acc) Svs.empty lv in
match matching_with_terms ~trans_name:"apply" slv lv nt g withed_terms with
......@@ -22,6 +22,7 @@ exception Arg_expected of string * string
exception Arg_theory_not_found of string
exception Arg_expected_none of string
exception Arg_qid_not_found of Ptree.qualid
exception Arg_pr_not_found of prsymbol
exception Arg_error of string
let () = Exn_printer.register
......@@ -23,6 +23,7 @@ exception Parse_error of string
exception Arg_expected of string * string
exception Arg_theory_not_found of string
exception Arg_expected_none of string
exception Arg_pr_not_found of Decl.prsymbol
exception Arg_qid_not_found of Ptree.qualid
exception Arg_error of string
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