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/* $OpenBSD: scanflags.c,v 1.3 2015/11/19 23:20:34 tedu Exp $ */ |
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/* scanflags - flags used by scanning. */ |
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/* Copyright (c) 1990 The Regents of the University of California. */ |
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/* All rights reserved. */ |
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/* This code is derived from software contributed to Berkeley by */ |
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/* Vern Paxson. */ |
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/* The United States Government has rights in this work pursuant */ |
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/* to contract no. DE-AC03-76SF00098 between the United States */ |
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/* Department of Energy and the University of California. */ |
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/* This file is part of flex. */ |
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/* Redistribution and use in source and binary forms, with or without */ |
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/* modification, are permitted provided that the following conditions */ |
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/* are met: */ |
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/* 1. Redistributions of source code must retain the above copyright */ |
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/* notice, this list of conditions and the following disclaimer. */ |
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/* 2. Redistributions in binary form must reproduce the above copyright */ |
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/* notice, this list of conditions and the following disclaimer in the */ |
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/* documentation and/or other materials provided with the distribution. */ |
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/* Neither the name of the University nor the names of its contributors */ |
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/* may be used to endorse or promote products derived from this software */ |
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/* without specific prior written permission. */ |
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/* THIS SOFTWARE IS PROVIDED ``AS IS'' AND WITHOUT ANY EXPRESS OR */ |
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/* IMPLIED WARRANTIES, INCLUDING, WITHOUT LIMITATION, THE IMPLIED */ |
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/* WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR */ |
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/* PURPOSE. */ |
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#include "flexdef.h" |
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scanflags_t* _sf_stk = NULL; |
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size_t _sf_top_ix=0, _sf_max=0; |
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void |
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sf_push (void) |
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{ |
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✗✓ |
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if (_sf_top_ix + 1 >= _sf_max) |
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_sf_stk = (scanflags_t*) realloc ( (void*) _sf_stk, sizeof(scanflags_t) * (_sf_max += 32)); |
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// copy the top element |
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_sf_stk[_sf_top_ix + 1] = _sf_stk[_sf_top_ix]; |
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++_sf_top_ix; |
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} |
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void |
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sf_pop (void) |
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{ |
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assert(_sf_top_ix > 0); |
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--_sf_top_ix; |
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} |
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/* one-time initialization. Should be called before any sf_ functions. */ |
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void |
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sf_init (void) |
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{ |
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assert(_sf_stk == NULL); |
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_sf_stk = (scanflags_t*) malloc ( sizeof(scanflags_t) * (_sf_max = 32)); |
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if (!_sf_stk) |
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lerrsf_fatal(_("Unable to allocate %ld of stack"), |
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(void *)sizeof(scanflags_t)); |
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_sf_stk[_sf_top_ix] = 0; |
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} |