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/* $OpenBSD: expr.c,v 1.18 2010/09/07 19:58:09 marco Exp $ */ |
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/* |
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* Copyright (c) 2004 Marc Espie <espie@cvs.openbsd.org> |
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* |
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* Permission to use, copy, modify, and distribute this software for any |
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* purpose with or without fee is hereby granted, provided that the above |
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* copyright notice and this permission notice appear in all copies. |
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* |
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* THE SOFTWARE IS PROVIDED "AS IS" AND THE AUTHOR DISCLAIMS ALL WARRANTIES |
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* WITH REGARD TO THIS SOFTWARE INCLUDING ALL IMPLIED WARRANTIES OF |
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* MERCHANTABILITY AND FITNESS. IN NO EVENT SHALL THE AUTHOR BE LIABLE FOR |
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* ANY SPECIAL, DIRECT, INDIRECT, OR CONSEQUENTIAL DAMAGES OR ANY DAMAGES |
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* WHATSOEVER RESULTING FROM LOSS OF USE, DATA OR PROFITS, WHETHER IN AN |
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* ACTION OF CONTRACT, NEGLIGENCE OR OTHER TORTIOUS ACTION, ARISING OUT OF |
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* OR IN CONNECTION WITH THE USE OR PERFORMANCE OF THIS SOFTWARE. |
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*/ |
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#include <stdint.h> |
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#include <stdio.h> |
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#include <stddef.h> |
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#include "mdef.h" |
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#include "extern.h" |
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int32_t end_result; |
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const char *copy_toeval; |
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extern void yy_scan_string(const char *); |
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extern int yyparse(void); |
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int |
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yyerror(const char *msg) |
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{ |
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fprintf(stderr, "m4: %s in expr %s\n", msg, copy_toeval); |
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return(0); |
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} |
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int |
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expr(const char *toeval) |
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{ |
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copy_toeval = toeval; |
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yy_scan_string(toeval); |
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yyparse(); |
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return end_result; |
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} |