libcc1/marshall-cp.hh

   1 /* Marshalling and unmarshalling of C++-specific types.
   2    Copyright (C) 2014-2021 Free Software Foundation, Inc.
   3
   4 This file is part of GCC.
   5
   6 GCC is free software; you can redistribute it and/or modify it under
   7 the terms of the GNU General Public License as published by the Free
   8 Software Foundation; either version 3, or (at your option) any later
   9 version.
  10
  11 GCC is distributed in the hope that it will be useful, but WITHOUT ANY
  12 WARRANTY; without even the implied warranty of MERCHANTABILITY or
  13 FITNESS FOR A PARTICULAR PURPOSE.  See the GNU General Public License
  14 for more details.
  15
  16 You should have received a copy of the GNU General Public License
  17 along with GCC; see the file COPYING3.  If not see
  18 <http://www.gnu.org/licenses/>.  */
  19
  20 #ifndef CC1_PLUGIN_MARSHALL_CXX_HH
  21 #define CC1_PLUGIN_MARSHALL_CXX_HH
  22
  23 #include "marshall.hh"
  24 #include "gcc-cp-interface.h"
  25 #include "deleter.hh"
  26
  27 namespace cc1_plugin
  28 {
  29   template<>
  30   struct deleter<gcc_vbase_array>
  31   {
  32     void operator() (gcc_vbase_array *p)
  33     {
  34       delete[] p->flags;
  35       delete[] p->elements;
  36       delete p;
  37     }
  38   };
  39
  40   template<>
  41   struct deleter<gcc_cp_template_args>
  42   {
  43     void operator() (gcc_cp_template_args *p)
  44     {
  45       delete[] p->elements;
  46       delete[] p->kinds;
  47       delete p;
  48     }
  49   };
  50
  51   template<>
  52   struct deleter<gcc_cp_function_args>
  53   {
  54     void operator() (gcc_cp_function_args *p)
  55     {
  56       delete[] p->elements;
  57       delete p;
  58     }
  59   };
  60
  61   // Send a gcc_vbase_array marker followed by the array.
  62   status
  63   marshall (connection *conn, const gcc_vbase_array *a)
  64   {
  65     size_t len;
  66
  67     if (a)
  68       len = a->n_elements;
  69     else
  70       len = (size_t)-1;
  71
  72     if (!marshall_array_start (conn, 'v', len))
  73       return FAIL;
  74
  75     if (!a)
  76       return OK;
  77
  78     if (!marshall_array_elmts (conn, len * sizeof (a->elements[0]),
  79                                a->elements))
  80       return FAIL;
  81
  82     return marshall_array_elmts (conn, len * sizeof (a->flags[0]),
  83                                  a->flags);
  84   }
  85
  86   // Read a gcc_vbase_array marker, followed by a gcc_vbase_array.  The
  87   // resulting array must be freed by the caller, using 'delete[]' on
  88   // elements and virtualp, and 'delete' on the array object itself.
  89   status
  90   unmarshall (connection *conn, struct gcc_vbase_array **result)
  91   {
  92     size_t len;
  93
  94     if (!unmarshall_array_start (conn, 'v', &len))
  95       return FAIL;
  96
  97     if (len == (size_t)-1)
  98       {
  99         *result = NULL;
 100         return OK;
 101       }
 102
 103     cc1_plugin::unique_ptr<gcc_vbase_array> gva (new gcc_vbase_array {});
 104
 105     gva->n_elements = len;
 106     gva->elements = new gcc_type[len];
 107
 108     if (!unmarshall_array_elmts (conn,
 109                                  len * sizeof (gva->elements[0]),
 110                                  gva->elements))
 111       return FAIL;
 112
 113     gva->flags = new enum gcc_cp_symbol_kind[len];
 114
 115     if (!unmarshall_array_elmts (conn,
 116                                  len * sizeof (gva->flags[0]),
 117                                  gva->flags))
 118       return FAIL;
 119
 120     *result = gva.release ();
 121     return OK;
 122   }
 123
 124   // Send a gcc_cp_template_args marker followed by the array.
 125   status
 126   marshall (connection *conn, const gcc_cp_template_args *a)
 127   {
 128     size_t len;
 129
 130     if (a)
 131       len = a->n_elements;
 132     else
 133       len = (size_t)-1;
 134
 135     if (!marshall_array_start (conn, 't', len))
 136       return FAIL;
 137
 138     if (!a)
 139       return OK;
 140
 141     if (!marshall_array_elmts (conn, len * sizeof (a->kinds[0]),
 142                                a->kinds))
 143       return FAIL;
 144
 145     return marshall_array_elmts (conn, len * sizeof (a->elements[0]),
 146                                  a->elements);
 147   }
 148
 149   // Read a gcc_vbase_array marker, followed by a gcc_vbase_array.  The
 150   // resulting array must be freed by the caller, using 'delete[]' on
 151   // elements and virtualp, and 'delete' on the array object itself.
 152   status
 153   unmarshall (connection *conn, struct gcc_cp_template_args **result)
 154   {
 155     size_t len;
 156
 157     if (!unmarshall_array_start (conn, 't', &len))
 158       return FAIL;
 159
 160     if (len == (size_t)-1)
 161       {
 162         *result = NULL;
 163         return OK;
 164       }
 165
 166     cc1_plugin::unique_ptr<gcc_cp_template_args> gva
 167       (new gcc_cp_template_args {});
 168
 169     gva->n_elements = len;
 170     gva->kinds = new char[len];
 171
 172     if (!unmarshall_array_elmts (conn,
 173                                  len * sizeof (gva->kinds[0]),
 174                                  gva->kinds))
 175       return FAIL;
 176
 177     gva->elements = new gcc_cp_template_arg[len];
 178
 179     if (!unmarshall_array_elmts (conn,
 180                                  len * sizeof (gva->elements[0]),
 181                                  gva->elements))
 182       return FAIL;
 183
 184     *result = gva.release ();
 185     return OK;
 186   }
 187
 188   // Send a gcc_cp_function_args marker followed by the array.
 189   status
 190   marshall (connection *conn, const gcc_cp_function_args *a)
 191   {
 192     size_t len;
 193
 194     if (a)
 195       len = a->n_elements;
 196     else
 197       len = (size_t)-1;
 198
 199     if (!marshall_array_start (conn, 'd', len))
 200       return FAIL;
 201
 202     if (!a)
 203       return OK;
 204
 205     return marshall_array_elmts (conn, len * sizeof (a->elements[0]),
 206                                  a->elements);
 207   }
 208
 209   // Read a gcc_cp_function_args marker, followed by a
 210   // gcc_cp_function_args.  The resulting array must be freed
 211   // by the caller, using 'delete[]' on elements and virtualp, and
 212   // 'delete' on the array object itself.
 213   status
 214   unmarshall (connection *conn, struct gcc_cp_function_args **result)
 215   {
 216     size_t len;
 217
 218     if (!unmarshall_array_start (conn, 'd', &len))
 219       return FAIL;
 220
 221     if (len == (size_t)-1)
 222       {
 223         *result = NULL;
 224         return OK;
 225       }
 226
 227     cc1_plugin::unique_ptr<gcc_cp_function_args> gva
 228       (new gcc_cp_function_args {});
 229
 230     gva->n_elements = len;
 231     gva->elements = new gcc_expr[len];
 232
 233     if (!unmarshall_array_elmts (conn,
 234                                  len * sizeof (gva->elements[0]),
 235                                  gva->elements))
 236       return FAIL;
 237
 238     *result = gva.release ();
 239
 240     return OK;
 241   }
 242 }
 243
 244 #endif // CC1_PLUGIN_MARSHALL_CP_HH