https://github.com/EasyCrypt/easycrypt
Revision 9f6a2f9c698e6c47fa841a0b040bc45d82a601c5 authored by Benjamin Gregoire on 07 July 2016, 06:32:45 UTC, committed by Benjamin Gregoire on 07 July 2016, 06:32:45 UTC
1 parent 776af38
Tip revision: 9f6a2f9c698e6c47fa841a0b040bc45d82a601c5 authored by Benjamin Gregoire on 07 July 2016, 06:32:45 UTC
add make
add make
Tip revision: 9f6a2f9
ecMemory.ml
(* --------------------------------------------------------------------
* Copyright (c) - 2012--2016 - IMDEA Software Institute
* Copyright (c) - 2012--2016 - Inria
*
* Distributed under the terms of the CeCILL-C-V1 license
* -------------------------------------------------------------------- *)
(* -------------------------------------------------------------------- *)
open EcSymbols
open EcTypes
module Msym = EcSymbols.Msym
(* -------------------------------------------------------------------- *)
type memory = EcIdent.t
let mem_equal = EcIdent.id_equal
(* -------------------------------------------------------------------- *)
let mt_fv = EcTypes.mt_fv
let lmt_equal = EcTypes.lmt_equal
let lmt_xpath mt = mt.mt_path
let lmt_bindings mt = mt.mt_vars
let mt_equal = EcTypes.mt_equal
let mt_xpath = function
| None -> assert false
| Some mt -> lmt_xpath mt
let mt_bindings = function
| None -> assert false
| Some mt -> lmt_bindings mt
(* -------------------------------------------------------------------- *)
type memenv = memory * memtype
let me_equal (m1,mt1) (m2,mt2) =
mem_equal m1 m2 && mt_equal mt1 mt2
(* -------------------------------------------------------------------- *)
let memory (m,_) = m
let memtype (_,mt) = mt
let xpath (_,mt) = mt_xpath mt
let bindings (_,mt) = mt_bindings mt
(* -------------------------------------------------------------------- *)
exception DuplicatedMemoryBinding of symbol
(* -------------------------------------------------------------------- *)
let empty_local (me : memory) mp =
(me, Some {mt_path = mp; mt_vars = Msym.empty; } )
let abstract (me:memory) = (me,None)
(* -------------------------------------------------------------------- *)
let bindp (x : symbol) pr (ty : EcTypes.ty) ((m,mt) : memenv) =
let mt = match mt with
| None -> assert false
| Some mt -> mt in
let merger = function
| Some _ -> raise (DuplicatedMemoryBinding x)
| None -> Some (pr,ty)
in
(m, Some { mt with mt_vars = Msym.change merger x mt.mt_vars })
let bind_proj i n x ty me = bindp x (Some (i,n)) ty me
let bind x ty me = bindp x None ty me
(* -------------------------------------------------------------------- *)
let lookup (x : symbol) ((_,mt) : memenv) =
match mt with
| None -> None
| Some mt -> Msym.find_opt x (lmt_bindings mt)
let is_bound x me = lookup x me <> None
let is_bound_pv pv me =
is_loc pv && is_bound (EcPath.xbasename pv.pv_name) me
(* -------------------------------------------------------------------- *)
let mt_subst = EcTypes.mt_subst
let mt_substm sp smp st o =
mt_subst (EcPath.x_substm sp smp) st o
let me_subst sx st (m,mt as me) =
let mt' = mt_subst sx st mt in
if mt' == mt then me else
(m, mt')
let me_substm sp smp st me =
me_subst (EcPath.x_substm sp smp) st me
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