gcc/testsuite/g++.dg/plugin/decl_plugin.c

   1 /* A plugin example that shows which declarations are caught by FINISH_DECL */
   2
   3 #include "gcc-plugin.h"
   4 #include <stdlib.h>
   5 #include "config.h"
   6 #include "system.h"
   7 #include "coretypes.h"
   8 #include "tree.h"
   9 #include "tree-pass.h"
  10 #include "intl.h"
  11 #include "diagnostic.h"
  12
  13 int plugin_is_GPL_compatible;
  14
  15 /* Callback function to invoke after GCC finishes a declaration. */
  16
  17 void plugin_finish_decl (void *event_data, void *data)
  18 {
  19   tree decl = (tree) event_data;
  20
  21   const char *kind = NULL;
  22   switch (TREE_CODE(decl)) {
  23   case FUNCTION_DECL:
  24     kind = "Function"; break;
  25   case PARM_DECL:
  26     kind = "Parameter"; break;
  27   case VAR_DECL:
  28     if (DECL_FILE_SCOPE_P(decl))
  29       kind = "Global";
  30     else
  31       kind = "Local";
  32     break;
  33   case FIELD_DECL:
  34     kind = "Field"; break;
  35   default:
  36     kind = "Unknown";
  37   }
  38
  39   warning (0, G_("Decl %s %s"),
  40            kind, IDENTIFIER_POINTER (DECL_NAME (decl)));
  41 }
  42
  43 int
  44 plugin_init (struct plugin_name_args *plugin_info,
  45              struct plugin_gcc_version *version)
  46 {
  47   const char *plugin_name = plugin_info->base_name;
  48
  49   register_callback (plugin_name, PLUGIN_FINISH_DECL,
  50                      plugin_finish_decl, NULL);
  51   return 0;
  52 }