274 lines
9.1 KiB
OCaml
274 lines
9.1 KiB
OCaml
(***********************************************************************)
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(* *)
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(* Heptagon *)
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(* *)
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(* Gwenael Delaval, LIG/INRIA, UJF *)
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(* Leonard Gerard, Parkas, ENS *)
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(* Adrien Guatto, Parkas, ENS *)
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(* Cedric Pasteur, Parkas, ENS *)
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(* Marc Pouzet, Parkas, ENS *)
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(* *)
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(* Copyright 2012 ENS, INRIA, UJF *)
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(* *)
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(* This file is part of the Heptagon compiler. *)
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(* *)
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(* Heptagon is free software: you can redistribute it and/or modify it *)
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(* under the terms of the GNU General Public License as published by *)
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(* the Free Software Foundation, either version 3 of the License, or *)
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(* (at your option) any later version. *)
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(* *)
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(* Heptagon is distributed in the hope that it will be useful, *)
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(* but WITHOUT ANY WARRANTY; without even the implied warranty of *)
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(* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the *)
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(* GNU General Public License for more details. *)
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(* *)
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(* You should have received a copy of the GNU General Public License *)
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(* along with Heptagon. If not, see <http://www.gnu.org/licenses/> *)
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(* *)
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(***********************************************************************)
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(* The internal MiniLustre representation *)
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open Location
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open Names
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open Idents
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open Signature
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open Types
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open Linearity
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open Clocks
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(** Warning: Whenever Minils ast is modified,
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minils_format_version should be incremented. *)
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let minils_format_version = "4"
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type iterator_type =
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| Imap
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| Imapi
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| Ifold
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| Ifoldi
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| Imapfold
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type type_dec = {
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t_name: qualname;
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t_desc: tdesc;
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t_loc: location }
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and tdesc =
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| Type_abs
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| Type_alias of ty
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| Type_enum of constructor_name list
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| Type_struct of structure
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and extvalue = {
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w_desc : extvalue_desc;
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mutable w_ck: Clocks.ck;
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w_ty : ty;
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w_linearity : linearity;
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w_loc : location }
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and extvalue_desc =
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| Wconst of static_exp (*no tuple*)
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| Wvar of var_ident
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| Wfield of extvalue * field_name
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| Wwhen of extvalue * constructor_name * var_ident (** {!extvalue} [when Constructor(ident)] *)
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| Wreinit of extvalue * extvalue
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and exp = {
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e_desc : edesc;
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e_level_ck : Clocks.ck; (*when no data dep, execute the exp on this clock (set by [switch] *)
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mutable e_ct : ct;
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e_ty : ty;
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e_linearity : linearity;
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e_loc : location }
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and edesc =
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| Eextvalue of extvalue
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| Efby of static_exp option * extvalue
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(** {!static_exp} [fby] {!extvalue} *)
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| Eapp of app * extvalue list * var_ident option
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(** [app ~args=(]{!extvalue}[,extvalue...) reset ~r=ident] *)
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| Ewhen of exp * constructor_name * var_ident (** [e when C(c)] *)
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| Emerge of var_ident * (constructor_name * extvalue) list
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(** [merge ident (Constructor -> ]{!extvalue}[)+] *)
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| Estruct of (field_name * extvalue) list
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(** [{ field=extvalue; ... }] *)
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| Eiterator of iterator_type * app * static_exp list
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* extvalue list * extvalue list * var_ident option
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(** [map f <<n>> <(extvalue)> (extvalue) reset ident] *)
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and app = { a_op: op;
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a_params: static_exp list;
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a_unsafe: bool;
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a_id: ident option;
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a_inlined: bool }
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(** Unsafe applications could have side effects
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and be delicate about optimizations, !be careful! *)
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and op =
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| Eequal (** [arg1 = arg2] *)
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| Efun of fun_name (** "Stateless" [longname <<a_params>> (args) reset r] *)
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| Enode of fun_name (** "Stateful" [longname <<a_params>> (args) reset r] *)
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| Easync of fun_name * ack
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| Eifthenelse (** [if arg1 then arg2 else arg3] *)
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| Efield_update (** [{ arg1 with a_param1 = arg2 }] *)
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| Earray (** [[ args ]] *)
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| Earray_fill (** [[arg1^a_param1^..^a_paramn]] *)
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| Eselect (** [arg1[a_params]] *)
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| Eselect_slice (** [arg1[a_param1..a_param2]] *)
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| Eselect_dyn (** [arg1.[arg3...] default arg2] *)
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| Eselect_trunc (** [arg1[>arg_2 ...<]]*)
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| Eupdate (** [[ arg1 with arg3..arg_n = arg2 ]] *)
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| Econcat (** [arg1\@\@arg2] *)
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and ack = { ack_name : ack_name; ack_params : static_exp list }
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type pat =
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| Etuplepat of pat list
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| Evarpat of var_ident
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type eq = {
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eq_lhs : pat;
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eq_rhs : exp;
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eq_unsafe : bool;
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eq_base_ck : Clocks.ck;
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eq_loc : location }
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type var_dec = {
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v_ident : var_ident;
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v_type : ty;
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v_linearity : linearity;
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v_clock : Clocks.ck;
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v_loc : location }
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type objective_kind =
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| Obj_enforce
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| Obj_reachable
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| Obj_attractive
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type objective =
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{ o_kind : objective_kind;
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o_exp : extvalue }
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type contract = {
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c_assume : extvalue;
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c_objectives : objective list;
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c_assume_loc : extvalue;
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c_enforce_loc : extvalue;
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c_controllables : var_dec list;
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c_local : var_dec list;
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c_eq : eq list }
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type node_dec = {
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n_name : qualname;
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n_stateful : bool;
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n_unsafe : bool;
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n_input : var_dec list;
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n_output : var_dec list;
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n_contract : contract option;
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n_local : var_dec list;
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n_equs : eq list;
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n_loc : location;
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n_params : param list;
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n_param_constraints : constrnt list;
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n_mem_alloc : (ty * Interference_graph.ivar list) list; }
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type const_dec = {
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c_name : qualname;
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c_type : ty;
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c_value : static_exp;
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c_loc : location }
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type program = {
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p_modname : modul;
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p_format_version : string;
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p_opened : modul list;
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p_desc : program_desc list }
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and program_desc =
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| Pnode of node_dec
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| Pconst of const_dec
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| Ptype of type_dec
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type signature = {
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sig_name : qualname;
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sig_inputs : arg list;
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sig_stateful : bool;
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sig_outputs : arg list;
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sig_params : param list;
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sig_param_constraints : constrnt list;
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sig_external : bool;
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sig_loc : location }
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type interface =
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{ i_modname : modul;
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i_opened : modul list;
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i_desc : interface_desc list }
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and interface_desc =
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| Itypedef of type_dec
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| Iconstdef of const_dec
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| Isignature of signature
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(*Helper functions to build the AST*)
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let mk_extvalue ~ty ~linearity ?(clock = fresh_clock()) ?(loc = no_location) desc =
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{ w_desc = desc; w_ty = ty; w_linearity = linearity;
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w_ck = clock; w_loc = loc }
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let extvalue_true, extvalue_false =
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let extvalue_bool b ck =
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mk_extvalue ~ty:Initial.tbool ~linearity:Linearity.Ltop
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~clock:ck (Wconst (Initial.mk_static_bool b))
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in
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extvalue_bool true, extvalue_bool false
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let mk_vd_extvalue vd =
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mk_extvalue ~ty:vd.v_type ~linearity:vd.v_linearity
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~clock:vd.v_clock ~loc:vd.v_loc (Wvar vd.v_ident)
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let mk_exp level_ck ty ~linearity
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?(ct = fresh_ct ty) ?(loc = no_location) desc =
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{ e_desc = desc; e_ty = ty; e_linearity = linearity;
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e_level_ck = level_ck; e_ct = ct; e_loc = loc }
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let mk_var_dec ?(loc = no_location) ident ty linearity ck =
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{ v_ident = ident; v_type = ty; v_linearity = linearity; v_clock = ck; v_loc = loc }
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let mk_extvalue_exp ?(clock = fresh_clock())
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?(loc = no_location) level_ck ty ~linearity desc =
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mk_exp ~loc:loc level_ck ty ~linearity:linearity
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(Eextvalue (mk_extvalue ~clock:clock ~loc:loc ~linearity:linearity ~ty:ty desc))
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let mk_equation ?(loc = no_location) ?(base_ck=fresh_clock()) unsafe pat exp =
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{ eq_lhs = pat; eq_rhs = exp; eq_unsafe = unsafe; eq_base_ck = base_ck; eq_loc = loc }
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let mk_node
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?(input = []) ?(output = []) ?(contract = None)
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?(local = []) ?(eq = [])
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?(stateful = true) ~unsafe ?(loc = no_location) ?(param = []) ?(constraints = [])
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?(mem_alloc=[])
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name =
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{ n_name = name;
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n_stateful = stateful;
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n_unsafe = unsafe;
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n_input = input;
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n_output = output;
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n_contract = contract;
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n_local = local;
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n_equs = eq;
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n_loc = loc;
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n_params = param;
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n_param_constraints = constraints;
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n_mem_alloc = mem_alloc }
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let mk_type_dec type_desc name loc =
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{ t_name = name; t_desc = type_desc; t_loc = loc }
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let mk_const_dec id ty e loc =
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{ c_name = id; c_type = ty; c_value = e; c_loc = loc }
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let mk_app ?(params=[]) ?(unsafe=false) ?(id=None) ?(inlined=false) op =
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{ a_op = op; a_params = params; a_unsafe = unsafe;
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a_id = id; a_inlined = inlined }
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