phunix/external/bsd/flex/dist/scanflags.c
Lionel Sambuc 0a6a1f1d05 NetBSD re-synchronization of the source tree
This brings our tree to NetBSD 7.0, as found on -current on the
10-10-2015.

This updates:
 - LLVM to 3.6.1
 - GCC to GCC 5.1
 - Replace minix/commands/zdump with usr.bin/zdump
 - external/bsd/libelf has moved to /external/bsd/elftoolchain/
 - Import ctwm
 - Drop sprintf from libminc

Change-Id: I149836ac18e9326be9353958bab9b266efb056f0
2016-01-13 20:32:14 +01:00

72 lines
2.4 KiB
C

/* $NetBSD: scanflags.c,v 1.3 2014/10/30 18:44:05 christos Exp $ */
/* scanflags - flags used by scanning. */
/* Copyright (c) 1990 The Regents of the University of California. */
/* All rights reserved. */
/* This code is derived from software contributed to Berkeley by */
/* Vern Paxson. */
/* The United States Government has rights in this work pursuant */
/* to contract no. DE-AC03-76SF00098 between the United States */
/* Department of Energy and the University of California. */
/* This file is part of flex. */
/* Redistribution and use in source and binary forms, with or without */
/* modification, are permitted provided that the following conditions */
/* are met: */
/* 1. Redistributions of source code must retain the above copyright */
/* notice, this list of conditions and the following disclaimer. */
/* 2. Redistributions in binary form must reproduce the above copyright */
/* notice, this list of conditions and the following disclaimer in the */
/* documentation and/or other materials provided with the distribution. */
/* Neither the name of the University nor the names of its contributors */
/* may be used to endorse or promote products derived from this software */
/* without specific prior written permission. */
/* THIS SOFTWARE IS PROVIDED ``AS IS'' AND WITHOUT ANY EXPRESS OR */
/* IMPLIED WARRANTIES, INCLUDING, WITHOUT LIMITATION, THE IMPLIED */
/* WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR */
/* PURPOSE. */
#include "flexdef.h"
__RCSID("$NetBSD: scanflags.c,v 1.3 2014/10/30 18:44:05 christos Exp $");
scanflags_t* _sf_stk = NULL;
size_t _sf_top_ix=0, _sf_max=0;
void
sf_push (void)
{
if (_sf_top_ix + 1 >= _sf_max)
_sf_stk = (scanflags_t*) flex_realloc ( (void*) _sf_stk, sizeof(scanflags_t) * (_sf_max += 32));
// copy the top element
_sf_stk[_sf_top_ix + 1] = _sf_stk[_sf_top_ix];
++_sf_top_ix;
}
void
sf_pop (void)
{
assert(_sf_top_ix > 0);
--_sf_top_ix;
}
/* one-time initialization. Should be called before any sf_ functions. */
void
sf_init (void)
{
assert(_sf_stk == NULL);
_sf_stk = (scanflags_t*) flex_alloc ( sizeof(scanflags_t) * (_sf_max = 32));
if (!_sf_stk)
lerrsf_fatal(_("Unable to allocate %ld of stack"),
(long)sizeof(scanflags_t));
_sf_stk[_sf_top_ix] = 0;
}
/* vim:set expandtab cindent tabstop=4 softtabstop=4 shiftwidth=4 textwidth=0: */