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  }