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 (_obj->implementation) {\n"
  48                     "    /* in-proc object */\n");
  49         fprintf(of, "    if (!_obj->interface ||\n"
  50                     "        strncmp(_obj->interface->name, \"%s\", %d) != 0) {\n"
  51                     "      ev->major = FORB_EX_BAD_OPERATION;\n"
  52                     "      return %s;\n"
  53                     "    }\n", iface_id, strlen(iface_id), has_retval ? FORB_RETVAL_VAR_NAME : "");
  54         fprintf(of, "    ");
  55         if (has_retval) {
  56                 fprintf(of, FORB_RETVAL_VAR_NAME " = ");
  57         }
  58         fprintf(of, "_%s_impl(_obj)->%s(_obj, ",
  59                 iface_id, opname_plain);
  60         for (sub = IDL_OP_DCL (tree).parameter_dcls; sub; sub = IDL_LIST (sub).next) {
  61                 IDL_tree parm = IDL_LIST (sub).data;
  62                 fprintf (of, "%s, ", IDL_IDENT (IDL_PARAM_DCL (parm).simple_declarator).str);
  63         }
  64         fprintf(of, "ev);\n");
  65
  66         fprintf(of, "  } else {\n");
  67         fprintf(of, "    /* remote object */\n"
  68                     "    CDR_Codec codec;\n"
  69                     "    forb_request_handle_t req;\n"
  70                     "    CDR_codec_init_static(&codec);\n"
  71                     "    ex_on_fail(CDR_buffer_init(&codec, 256), FORB_EX_NO_MEMORY);\n");
  72 /*      fprintf(of, "    forb_prepare_request(&codec, _obj, FORB_METHOD_INDEX(%s));\n", */
  73 /*              opname); */
  74         for (sub = IDL_OP_DCL (tree).parameter_dcls; sub; sub = IDL_LIST (sub).next) {
  75                 IDL_tree        parm = IDL_LIST (sub).data;
  76                 IDL_ParamRole   role;
  77                 role = oidl_attr_to_paramrole(IDL_PARAM_DCL(parm).attr);
  78                 if (role == DATA_IN || role == DATA_INOUT) {
  79                   char *name = IDL_IDENT(IDL_PARAM_DCL(parm).simple_declarator).str;
  80                   fprintf(of, "    ex_on_fail(");
  81                   forb_cbe_write_typespec(of, IDL_PARAM_DCL(parm).param_type_spec);
  82                   fprintf(of, "_serialize(&codec, %s%s), FORB_EX_IMP_LIMIT);\n",
  83                           role == DATA_IN ? "&":"",
  84                           name);
  85                 }
  86         }
  87         fprintf(of, "    forb_send_request(_obj, FORB_METHOD_INDEX(%s), &codec, &req, ev);\n",
  88                 opname);
  89         fprintf(of, "    if (forb_exception_occured(ev)) goto exception;\n");
  90         fprintf(of, "    forb_wait_for_reply(&req, ev);\n");
  91         fprintf(of, "    if (forb_exception_occured(ev)) goto exception;\n");
  92         if (has_retval) {
  93           fprintf(of, "    ");
  94           forb_cbe_write_typespec(of, IDL_OP_DCL(tree).op_type_spec);
  95           fprintf(of, "_deserialize(&codec, &"FORB_RETVAL_VAR_NAME");\n");
  96         }
  97         for (sub = IDL_OP_DCL (tree).parameter_dcls; sub; sub = IDL_LIST (sub).next) {
  98                 IDL_tree        parm = IDL_LIST (sub).data;
  99                 IDL_ParamRole   role;
 100                 role = oidl_attr_to_paramrole(IDL_PARAM_DCL(parm).attr);
 101                 if (role == DATA_OUT || role == DATA_INOUT) {
 102                   char *name = IDL_IDENT(IDL_PARAM_DCL(parm).simple_declarator).str;
 103                   fprintf(of, "    ");
 104                   forb_cbe_write_typespec(of, IDL_PARAM_DCL(parm).param_type_spec);
 105                   fprintf(of, "_deserialize(&codec, %s);\n", name);
 106                 }
 107         }
 108         fprintf(of, "exception:\n"
 109                     "    CDR_codec_release_buffer(&codec);\n");
 110         fprintf(of, "  }\n");
 111         if (has_retval) {
 112                 fprintf(of, "  return " FORB_RETVAL_VAR_NAME ";\n");
 113         }
 114
 115         fprintf (of, "}\n\n");
 116
 117         g_free (iface_id);
 118         g_free (opname);
 119
 120         (*idx)++;
 121 }
 122
 123 static void
 124 cs_output_stubs (IDL_tree     tree,
 125                  OIDL_C_Info *ci,
 126                  int         *idx)
 127 {
 128         if (!tree)
 129                 return;
 130
 131         switch (IDL_NODE_TYPE (tree)) {
 132         case IDLN_MODULE:
 133                 cs_output_stubs (IDL_MODULE (tree).definition_list, ci, idx);
 134                 break;
 135         case IDLN_LIST: {
 136                 IDL_tree sub;
 137
 138                 for (sub = tree; sub; sub = IDL_LIST (sub).next)
 139                         cs_output_stubs (IDL_LIST (sub).data, ci, idx);
 140                 break;
 141                 }
 142         case IDLN_ATTR_DCL: {
 143 /*              IDL_tree node; */
 144
 145 /*              for (node = IDL_ATTR_DCL (tree).simple_declarations; node; node = IDL_LIST (node).next) { */
 146 /*                      OIDL_Attr_Info *ai; */
 147
 148 /*                      ai = IDL_LIST (node).data->data; */
 149
 150 /*                      cs_output_stubs (ai->op1, ci, idx); */
 151
 152 /*                      if (ai->op2) */
 153 /*                              cs_output_stubs (ai->op2, ci, idx); */
 154 /*              } */
 155                 break;
 156                 }
 157         case IDLN_INTERFACE: {
 158                 int real_idx = 0;
 159                 char *id;
 160                 id = IDL_ns_ident_to_qstring (IDL_INTERFACE (tree).ident, "_", 0);
 161                 fprintf(ci->fh, "#define _%s_impl(obj) ((struct forb_%s_impl*)(obj)->implementation)\n\n",
 162                         id, id);
 163                 g_free(id);
 164                 cs_output_stubs (IDL_INTERFACE (tree).body, ci, &real_idx);
 165                 break;
 166                 }
 167         case IDLN_OP_DCL:
 168                 cs_output_stub (tree, ci, idx);
 169                 break;
 170         default:
 171                 break;
 172         }
 173 }
 174
 175 void
 176 forb_idl_output_c_stubs (IDL_tree       tree,
 177                           OIDL_Run_Info *rinfo,
 178                           OIDL_C_Info   *ci)
 179 {
 180         fprintf (ci->fh, OIDL_C_WARNING);
 181         fprintf (ci->fh, "#include <string.h>\n");
 182 /*      fprintf (ci->fh, "#define FORB2_STUBS_API\n"); */
 183         fprintf (ci->fh, "#include \"%s.h\"\n\n", ci->base_name);
 184
 185         fprintf (ci->fh, "#define ex_on_fail(command, ex) if (!(command)) do { ev->major = (ex); goto exception; } while(0)\n\n");
 186
 187         cs_output_stubs (tree, ci, NULL);
 188 }