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       1              : /* pass-events.h - pub/sub messages about GCC optimization passes.
       2              :    Copyright (C) 2025 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 GCC_TOPICS_PASS_EVENTS_H
      21              : #define GCC_TOPICS_PASS_EVENTS_H
      22              : 
      23              : #include "pub-sub.h"
      24              : 
      25              : namespace gcc {
      26              : namespace topics {
      27              : 
      28              : /* A topic for messages relating to GCC optimization passes.  */
      29              : 
      30              : namespace pass_events {
      31              : 
      32              : struct before_pass
      33              : {
      34              :   opt_pass *pass;
      35              :   function *fun;
      36              : };
      37              : 
      38              : struct after_pass
      39              : {
      40              :   opt_pass *pass;
      41              :   function *fun;
      42              : };
      43              : 
      44              : /* Abstract base class for a subscriber to messages about
      45              :    GCC optimization passes.  */
      46              : 
      47            2 : struct subscriber
      48              : {
      49              :   virtual ~subscriber () = default;
      50              : 
      51              :   virtual void on_message (const before_pass &) = 0;
      52              :   virtual void on_message (const after_pass &) = 0;
      53              : };
      54              : 
      55              : } // namespace gcc::topics::pass_events
      56              : } // namespace gcc::topics
      57              : } // namespace gcc
      58              : 
      59              : #endif /* ! GCC_TOPICS_PASS_EVENTS_H */