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(***********************************************************************)
(* *)
(* CamlIDL *)
(* *)
(* Xavier Leroy, projet Cristal, INRIA Rocquencourt *)
(* *)
(* Copyright 1999 Institut National de Recherche en Informatique et *)
(* en Automatique. All rights reserved. This file is distributed *)
(* under the terms of the GNU Lesser General Public License LGPL v2.1 *)
(* *)
(***********************************************************************)
(* $Id: structdecl.ml,v 1.15 2002-01-16 09:42:03 xleroy Exp $ *)
(* Handling of structure declarations *)
open Printf
open Utils
open Variables
open Idltypes
open Cvttyp
open Cvtval
open Struct
(* Convert an IDL struct declaration to an ML record declaration *)
let ml_declaration oc sd =
if sd.sd_name = ""
then fprintf oc "struct_%d = " sd.sd_stamp
else fprintf oc "%s = " (String.uncapitalize_ascii sd.sd_name);
match remove_dependent_fields sd.sd_fields with
[f] ->
fprintf oc "%a\n" out_ml_type f.field_typ
| fields ->
fprintf oc "{\n";
List.iter
(fun f ->
fprintf oc " %s: %a;\n"
(String.uncapitalize_ascii f.field_mlname)
out_ml_type f.field_typ)
fields;
fprintf oc "}\n"
(* Convert an IDL struct declaration to a C struct declaration *)
let c_declaration oc sd =
if sd.sd_fields = []
then fprintf oc "struct %s;\n" sd.sd_name
else begin out_struct oc sd; fprintf oc ";\n\n" end
(* External (forward) declaration of the translation functions *)
let declare_transl oc sd =
fprintf oc "extern void camlidl_ml2c_%s_struct_%s(value, struct %s *, camlidl_ctx _ctx);\n"
sd.sd_mod sd.sd_name sd.sd_name;
fprintf oc "extern value camlidl_c2ml_%s_struct_%s(struct %s *, camlidl_ctx _ctx);\n\n"
sd.sd_mod sd.sd_name sd.sd_name
(* Translation function from an ML record to a C struct *)
let transl_ml_to_c oc sd =
current_function := sprintf "struct %s" sd.sd_name;
let v = new_var "_v" in
let c = new_var "_c" in
fprintf oc "void camlidl_ml2c_%s_struct_%s(value %s, struct %s * %s, camlidl_ctx _ctx)\n"
sd.sd_mod sd.sd_name v sd.sd_name c;
fprintf oc "{\n";
let pc = divert_output() in
increase_indent();
struct_ml_to_c ml_to_c pc false Prefix.empty sd v (sprintf "(*%s)" c);
output_variable_declarations oc;
end_diversion oc;
decrease_indent();
fprintf oc "}\n\n";
current_function := ""
(* Translation function from a C struct to an ML record *)
let transl_c_to_ml oc sd =
current_function := sprintf "struct %s" sd.sd_name;
let c = new_var "_c" in
fprintf oc "value camlidl_c2ml_%s_struct_%s(struct %s * %s, camlidl_ctx _ctx)\n"
sd.sd_mod sd.sd_name sd.sd_name c;
fprintf oc "{\n";
let pc = divert_output() in
increase_indent();
let v = new_ml_variable() in
struct_c_to_ml c_to_ml pc Prefix.empty sd (sprintf "(*%s)" c) v;
iprintf pc "return %s;\n" v;
output_variable_declarations oc;
end_diversion oc;
decrease_indent();
fprintf oc "}\n\n";
current_function := ""
(* Emit the translation functions *)
let emit_transl oc sd =
transl_ml_to_c oc sd;
transl_c_to_ml oc sd
|
