134 lines
3.2 KiB
OCaml
134 lines
3.2 KiB
OCaml
(**************************************************************************)
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(* *)
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(* Heptagon *)
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(* *)
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(* Author : Marc Pouzet *)
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(* Organization : Demons, LRI, University of Paris-Sud, Orsay *)
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(* *)
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(**************************************************************************)
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(* Object code internal representation *)
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open Misc
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open Names
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open Ident
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type var_name = ident
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type type_name = longname
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type fun_name = longname
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type class_name = name
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type instance_name = longname
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type obj_name = name
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type op_name = longname
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type field_name = longname
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type ty =
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| Tint
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| Tfloat
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| Tbool
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| Tid of type_name
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| Tarray of ty * int
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type type_dec =
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{ t_name : name;
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t_desc : tdesc }
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and tdesc =
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| Type_abs
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| Type_enum of name list
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| Type_struct of (name * ty) list
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type const =
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| Cint of int
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| Cbool of bool
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| Cfloat of float
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| Cconstr of longname
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| Carray_power of int * const
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| Carray of const list
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| Ctuple of const list
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type lhs =
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| Var of var_name
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| Mem of var_name
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| Field of lhs * field_name
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| Array of lhs * exp
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and exp =
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| Lhs of lhs
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| Const of const
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| Op of op_name * exp list
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| Struct_lit of type_name * (field_name * exp) list
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| Array_lit of exp list
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type obj_call =
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| Context of obj_name
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| Array_context of obj_name * lhs
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type act =
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| Assgn of lhs * exp
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| Step_ap of lhs list * obj_call * exp list
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| Comp of act * act
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| Case of exp * (longname * act) list
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| For of var_name * int * int * act
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| Reinit of obj_name
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| Nothing
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type var_dec =
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{ v_ident : var_name;
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v_type : ty; }
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type obj_dec =
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{ obj : obj_name;
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cls : instance_name;
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size : int; }
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type step_fun =
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{ inp : var_dec list;
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out : var_dec list;
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local : var_dec list;
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controllables : var_dec list; (* GD : ugly patch to delay controllable
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variables definition to target code
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generation *)
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bd : act }
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type reset_fun = act
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type class_def =
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{ cl_id : class_name;
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mem : var_dec list;
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objs : obj_dec list;
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reset : reset_fun;
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step : step_fun; }
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type program =
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{ o_pragmas: (name * string) list;
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o_opened : name list;
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o_types : type_dec list;
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o_defs : class_def list }
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let mk_var_dec name ty =
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{ v_ident = name; v_type = ty }
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let rec var_name x =
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match x with
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| Var x -> x
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| Mem x -> x
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| Field(x,_) -> var_name x
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| Array(l, _) -> var_name l
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(** Returns whether an object of name n belongs to
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a list of var_dec. *)
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let rec vd_mem n = function
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| [] -> false
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| vd::l -> vd.v_ident = n or (vd_mem n l)
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(** Returns the var_dec object corresponding to the name n
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in a list of var_dec. *)
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let rec vd_find n = function
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| [] -> Format.printf "Not found var %s\n" (name n); raise Not_found
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| vd::l ->
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if vd.v_ident = n then vd else vd_find n l
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let lhs_of_exp = function
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| Lhs l -> l
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| _ -> assert false
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