162 lines
4 KiB
OCaml
162 lines
4 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 Idents
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open Types
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open Signature
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open Location
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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 type_dec =
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{ t_name : name;
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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 name list
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| Type_struct of structure
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type const_dec = {
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c_name : name;
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c_value : static_exp;
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c_type : ty;
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c_loc : location }
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type lhs = { l_desc : lhs_desc; l_ty : ty; l_loc : location }
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and lhs_desc =
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| Lvar of var_ident
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| Lmem of var_ident
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| Lfield of lhs * field_name
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| Larray of lhs * exp
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and exp = { e_desc : exp_desc; e_ty : ty; e_loc : location }
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and exp_desc =
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| Elhs of lhs
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| Econst of static_exp
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| Eop of op_name * exp list
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| Estruct of type_name * (field_name * exp) list
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| Earray of exp list
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type obj_call =
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| Oobj of obj_name
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| Oarray of obj_name * lhs
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type method_name =
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| Mreset
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| Mstep
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| Mmethod of name
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type act =
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| Aassgn of lhs * exp
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| Acall of lhs list * obj_call * method_name * exp list
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| Acase of exp * (constructor_name * block) list
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| Afor of var_ident * static_exp * static_exp * block
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and block =
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{ b_locals : var_dec list;
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b_body : act list }
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and var_dec =
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{ v_ident : var_ident;
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v_type : ty; (* TODO should be here, v_controllable : bool*)
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v_loc : location }
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type obj_dec =
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{ o_name : obj_name;
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o_class : instance_name;
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o_params : static_exp list;
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o_size : static_exp option;
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o_loc : location }
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type method_def =
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{ m_name : method_name;
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m_inputs : var_dec list;
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m_outputs : var_dec list;
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m_body : block; }
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type class_def =
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{ cd_name : class_name;
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cd_mems : var_dec list;
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cd_objs : obj_dec list;
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cd_params : param list;
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cd_methods: method_def list;
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cd_loc : location }
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type program =
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{ p_modname : name;
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p_opened : name list;
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p_types : type_dec list;
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p_consts : const_dec list;
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p_defs : class_def list }
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let mk_var_dec ?(loc=no_location) name ty =
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{ v_ident = name; v_type = ty; v_loc = loc }
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let mk_exp ?(ty=invalid_type) ?(loc=no_location) desc =
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{ e_desc = desc; e_ty = ty; e_loc = loc }
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let mk_lhs ?(ty=invalid_type) ?(loc=no_location) desc =
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{ l_desc = desc; l_ty = ty; l_loc = loc }
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let mk_lhs_exp ?(ty=invalid_type) desc =
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let lhs = mk_lhs ~ty:ty desc in
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mk_exp ~ty:ty (Elhs lhs)
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let mk_evar id =
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mk_exp (Elhs (mk_lhs (Lvar id)))
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let mk_block ?(locals=[]) eq_list =
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{ b_locals = locals;
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b_body = eq_list }
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let rec var_name x =
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match x.l_desc with
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| Lvar x -> x
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| Lmem x -> x
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| Lfield(x,_) -> var_name x
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| Larray(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.eprintf "Not found var %s@." (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 e = match e.e_desc with
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| Elhs l -> l
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| _ -> assert false
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let find_step_method cd =
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List.find (fun m -> m.m_name = Mstep) cd.cd_methods
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let find_reset_method cd =
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List.find (fun m -> m.m_name = Mreset) cd.cd_methods
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let obj_call_name o =
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match o with
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| Oobj obj
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| Oarray (obj, _) -> obj
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