forb-idl/forb-idl-c-stubs.c

   1 #include "config.h"
   2
   3 #include "forb-idl-c-backend.h"
   4
   5 #include <string.h>
   6
   7 static void
   8 cs_output_stub (IDL_tree     tree,
   9                 OIDL_C_Info *ci,
  10                 int         *idx)
  11 {
  12         FILE     *of = ci->fh;
  13         IDL_tree  sub;
  14         char     *iface_id;
  15         char     *opname;
  16         char     *opname_plain;
  17         gboolean  has_retval, has_args;
  18
  19         g_return_if_fail (idx != NULL);
  20
  21         iface_id = IDL_ns_ident_to_qstring (
  22                         IDL_IDENT_TO_NS (IDL_INTERFACE (
  23                                 IDL_get_parent_node (tree, IDLN_INTERFACE, NULL)
  24                                         ).ident), "_", 0);
  25         opname_plain = IDL_IDENT(IDL_OP_DCL (tree).ident).str;
  26         opname = IDL_ns_ident_to_qstring (IDL_IDENT_TO_NS (IDL_OP_DCL (tree).ident), "_", 0);
  27
  28         has_retval = IDL_OP_DCL (tree).op_type_spec != NULL;
  29         has_args   = IDL_OP_DCL (tree).parameter_dcls != NULL;
  30
  31         forb_cbe_op_write_proto (of, tree, "", FALSE);
  32
  33         fprintf (of, "\n{\n");
  34
  35         if (has_retval) {
  36                 fprintf (of, "  ");
  37                 forb_cbe_write_param_typespec (of, tree);
  38                 fprintf (of, " " FORB_RETVAL_VAR_NAME ";\n");
  39         }
  40
  41 /*      fprintf(of, "  if (_obj->type != %s_type) {\n" */
  42 /*                  "    ev->major = FORB_EX_BAD_OPERATION;\n", iface_id); */
  43 /*      if (has_retval) { */
  44 /*              fprintf(of, "    return "FORB_RETVAL_VAR_NAME";\n"); */
  45 /*      } */
  46         fprintf(of, "  if (ev) ev->major = FORB_EX_NONE;\n");
  47         fprintf(of, "  if (forb_object_is_local(_obj)) {\n");
  48         fprintf(of, "    if (!_obj->interface ||\n"
  49                     "        strncmp(_obj->interface->name, \"%s\", %d) != 0) {\n"
  50                     "      ev->major = FORB_EX_BAD_OPERATION;\n"
  51                     "      return %s;\n"
  52                     "    }\n", iface_id, strlen(iface_id), has_retval ? FORB_RETVAL_VAR_NAME : "");
  53         fprintf(of, "    ");
  54         if (has_retval) {
  55                 fprintf(of, FORB_RETVAL_VAR_NAME " = ");
  56         }
  57         fprintf(of, "_%s_impl(_obj)->%s(_obj, ",
  58                 iface_id, opname_plain);
  59         for (sub = IDL_OP_DCL (tree).parameter_dcls; sub; sub = IDL_LIST (sub).next) {
  60                 IDL_tree parm = IDL_LIST (sub).data;
  61                 fprintf (of, "%s, ", IDL_IDENT (IDL_PARAM_DCL (parm).simple_declarator).str);
  62         }
  63         fprintf(of, "ev);\n");
  64
  65         fprintf(of, "  } else {\n");
  66         fprintf(of, "    /* remote object */\n"
  67                     "    forb_request_t req;\n");
  68         fprintf(of, "    ex_on_fail(forb_request_init(&req, _obj) == 0, FORB_EX_INTERNAL);\n");
  69         fprintf(of, "    forb_iop_prepare_request(&req, \"%s\", FORB_METHOD_INDEX(%s), ev);\n",
  70                 iface_id, opname);
  71         fprintf(of, "    if (forb_exception_occured(ev)) goto exception;\n");
  72         for (sub = IDL_OP_DCL (tree).parameter_dcls; sub; sub = IDL_LIST (sub).next) {
  73                 IDL_tree        parm = IDL_LIST (sub).data;
  74                 IDL_ParamRole   role;
  75                 role = oidl_attr_to_paramrole(IDL_PARAM_DCL(parm).attr);
  76                 if (role == DATA_IN || role == DATA_INOUT) {
  77                   char      *name = IDL_IDENT(IDL_PARAM_DCL(parm).simple_declarator).str;
  78                   gboolean  isSlice;
  79                   IDL_tree  ts = forb_cbe_get_typespec(parm);
  80                   int       n = oidl_param_info (ts, role, &isSlice);
  81                   fprintf(of, "    ex_on_fail(");
  82                   forb_cbe_write_typespec(of, IDL_PARAM_DCL(parm).param_type_spec);
  83                   fprintf(of, "_serialize(&req.cdr_request, %s%s), FORB_EX_IMP_LIMIT);\n",
  84                           n == 0 ? "&":"", name);
  85                 }
  86         }
  87         fprintf(of, "    forb_request_send(&req, ev);\n");
  88         fprintf(of, "    if (forb_exception_occured(ev)) goto exception;\n");
  89         fprintf(of, "    forb_request_wait_for_reply(&req);\n");
  90         fprintf(of, "    if (forb_exception_occured(ev)) goto exception;\n");
  91         if (has_retval) {
  92           fprintf(of, "    ");
  93           forb_cbe_write_typespec(of, IDL_OP_DCL(tree).op_type_spec);
  94           fprintf(of, "_deserialize(req.cdr_reply, &"FORB_RETVAL_VAR_NAME");\n");
  95         }
  96         for (sub = IDL_OP_DCL (tree).parameter_dcls; sub; sub = IDL_LIST (sub).next) {
  97                 IDL_tree        parm = IDL_LIST (sub).data;
  98                 IDL_ParamRole   role;
  99                 role = oidl_attr_to_paramrole(IDL_PARAM_DCL(parm).attr);
 100                 if (role == DATA_OUT || role == DATA_INOUT) {
 101                   char *name = IDL_IDENT(IDL_PARAM_DCL(parm).simple_declarator).str;
 102                   gboolean  isSlice;
 103                   IDL_tree  ts = forb_cbe_get_typespec(parm);
 104                   int       n = oidl_param_info (ts, role, &isSlice);
 105                   if (IDL_NODE_TYPE(forb_cbe_get_typespec(parm)) == IDLN_INTERFACE) {
 106                           fprintf(of, "    ");
 107                           forb_cbe_write_typespec(of, IDL_PARAM_DCL(parm).param_type_spec);
 108                   fprintf(ci->fh, "_deserialize(req.cdr_reply, %s, _obj->orb);\n", name);
 109                   } else {
 110                           if (IDL_NODE_TYPE(forb_cbe_get_typespec(parm)) == IDLN_TYPE_SEQUENCE &&
 111                               role == DATA_OUT) { /* Allocate out sequence */
 112                                   fprintf(ci->fh, "    *%s = forb_malloc(sizeof(**%s));\n", name, name);
 113                                   fprintf(ci->fh, "    if (!*%s) { ev->major = FORB_EX_NO_MEMORY; goto exception; }\n", name);
 114                                   /* TODO: Free previously allocated parameters on no memory error. */
 115                           }
 116                           fprintf(of, "    ");
 117                           forb_cbe_write_typespec(of, IDL_PARAM_DCL(parm).param_type_spec);
 118                           fprintf(ci->fh, "_deserialize(req.cdr_reply, %s%s);\n", n==2?"*":"", name);
 119                   }
 120                 }
 121         }
 122         fprintf(of, "    forb_request_signal_processed(&req);\n"
 123                     "exception:\n"
 124                     "    forb_request_destroy(&req);\n");
 125         fprintf(of, "  }\n");
 126         if (has_retval) {
 127                 fprintf(of, "  return " FORB_RETVAL_VAR_NAME ";\n");
 128         }
 129
 130         fprintf (of, "}\n\n");
 131
 132         g_free (iface_id);
 133         g_free (opname);
 134
 135         (*idx)++;
 136 }
 137
 138 static void
 139 cs_output_stubs (IDL_tree     tree,
 140                  OIDL_C_Info *ci,
 141                  int         *idx)
 142 {
 143         if (!tree)
 144                 return;
 145
 146         switch (IDL_NODE_TYPE (tree)) {
 147         case IDLN_MODULE:
 148                 cs_output_stubs (IDL_MODULE (tree).definition_list, ci, idx);
 149                 break;
 150         case IDLN_LIST: {
 151                 IDL_tree sub;
 152
 153                 for (sub = tree; sub; sub = IDL_LIST (sub).next)
 154                         cs_output_stubs (IDL_LIST (sub).data, ci, idx);
 155                 break;
 156                 }
 157         case IDLN_ATTR_DCL: {
 158 /*              IDL_tree node; */
 159
 160 /*              for (node = IDL_ATTR_DCL (tree).simple_declarations; node; node = IDL_LIST (node).next) { */
 161 /*                      OIDL_Attr_Info *ai; */
 162
 163 /*                      ai = IDL_LIST (node).data->data; */
 164
 165 /*                      cs_output_stubs (ai->op1, ci, idx); */
 166
 167 /*                      if (ai->op2) */
 168 /*                              cs_output_stubs (ai->op2, ci, idx); */
 169 /*              } */
 170                 break;
 171                 }
 172         case IDLN_INTERFACE: {
 173                 int real_idx = 0;
 174                 char *id;
 175                 /* Do not output skeletons for PIDL interfaces */
 176                 if ((tree->declspec & IDLF_DECLSPEC_PIDL) == 0) {
 177                   id = IDL_ns_ident_to_qstring (IDL_INTERFACE (tree).ident, "_", 0);
 178                   fprintf(ci->fh, "#define _%s_impl(obj) ((struct forb_%s_impl*)(obj)->implementation)\n\n",
 179                           id, id);
 180                   g_free(id);
 181                   cs_output_stubs (IDL_INTERFACE (tree).body, ci, &real_idx);
 182                 }
 183                 break;
 184                 }
 185         case IDLN_OP_DCL:
 186                 cs_output_stub (tree, ci, idx);
 187                 break;
 188         default:
 189                 break;
 190         }
 191 }
 192
 193 void
 194 forb_idl_output_c_stubs (IDL_tree       tree,
 195                           OIDL_Run_Info *rinfo,
 196                           OIDL_C_Info   *ci)
 197 {
 198         fprintf (ci->fh, OIDL_C_WARNING);
 199         fprintf (ci->fh, "#include <string.h>\n");
 200 /*      fprintf (ci->fh, "#define FORB2_STUBS_API\n"); */
 201         fprintf (ci->fh, "#include <forb/forb-internal.h>\n");
 202         fprintf (ci->fh, "#include <forb/request.h>\n");
 203         fprintf (ci->fh, "#include <forb/iop.h>\n");
 204         fprintf (ci->fh, "#include <forb/cdr.h>\n");
 205         fprintf (ci->fh, "#include <forb/object.h>\n\n");
 206         fprintf (ci->fh, "#include \"%s.h\"\n\n", ci->base_name);
 207
 208         fprintf (ci->fh, "#define ex_on_fail(command, ex) if (!(command)) do { ev->major = (ex); goto exception; } while(0)\n");
 209         fprintf (ci->fh, "#define FORB_REQEST_HDR_SIZE (forb_iop_MESSAGE_HEADER_SIZE + forb_iop_REQUEST_HEADER_SIZE)\n\n");
 210
 211         cs_output_stubs (tree, ci, NULL);
 212 }