#include <diagnostic-event-id.h>

Public Member Functions
	diagnostic_event_id_t ()

	diagnostic_event_id_t (int zero_based_idx)

bool	known_p () const

int	zero_based () const

int	one_based () const

Private Attributes
int	m_index

Static Private Attributes
static const int	UNKNOWN_EVENT_IDX = -1

Detailed Description

A class for referring to events within a diagnostic_path.
   Copyright (C) 2019-2025 Free Software Foundation, Inc.
   Contributed by David Malcolm <dmalcolm@redhat.com>

This file is part of GCC.

GCC is free software; you can redistribute it and/or modify it under
the terms of the GNU General Public License as published by the Free
Software Foundation; either version 3, or (at your option) any later
version.

GCC is distributed in the hope that it will be useful, but WITHOUT ANY
WARRANTY; without even the implied warranty of MERCHANTABILITY or
FITNESS FOR A PARTICULAR PURPOSE.  See the GNU General Public License
for more details.

You should have received a copy of the GNU General Public License
along with GCC; see the file COPYING3.  If not see
<http://www.gnu.org/licenses/>.

A class for referring to events within a diagnostic_path.

They are stored as 0-based offsets into the events, but
printed (e.g. via %@) as 1-based numbers.

For example, a 3-event path has event offsets 0, 1, and 2,
which would be shown to the user as "(1)", "(2)" and "(3)".

This has its own header so that pretty-print.cc can use this
to implement "%@" without bringing in all of diagnostic_path
(which e.g. refers to "tree").