/* $NetBSD: scanflags.c,v 1.1.1.2 2013/04/06 14:05:44 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" 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: */