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- /*
- * (c) copyright 1987 by the Vrije Universiteit, Amsterdam, The Netherlands.
- * See the copyright notice in the ACK home directory, in the file "Copyright".
- */
- /* $Id$ */
- /* PREPROCESSOR: INITIALIZATION ROUTINES */
- #include <stdlib.h>
- #include <string.h>
- #include "system.h"
- #include "alloc.h"
- #include "time.h"
- #include "class.h"
- #include "macro.h"
- #include "idf.h"
- struct mkey {
- char *mk_reserved;
- int mk_key;
- } mkey[] = {
- {"define", K_DEFINE},
- {"elif", K_ELIF},
- {"else", K_ELSE},
- {"endif", K_ENDIF},
- {"error", K_ERROR},
- {"if", K_IF},
- {"ifdef", K_IFDEF},
- {"ifndef", K_IFNDEF},
- {"include", K_INCLUDE},
- {"line", K_LINE},
- {"pragma", K_PRAGMA},
- {"undef", K_UNDEF},
- {0, K_UNKNOWN}
- };
- char *strcpy();
- char *sprint();
- init_pp()
- {
- static char *months[12] = {
- "Jan", "Feb", "Mar", "Apr", "May", "Jun",
- "Jul", "Aug", "Sep", "Oct", "Nov", "Dec"
- };
- long clock, sys_time();
- static char dbuf[30];
- static char tbuf[30];
- struct tm *tp;
- /* Initialise the control line keywords (if, include, define, etc)
- Although the lexical analyzer treats them as identifiers, the
- control line handler can recognize them as keywords by the
- id_resmac field of the identifier.
- */
- {
- register struct mkey *mk = &mkey[0];
- while (mk->mk_reserved) {
- register struct idf *idf = str2idf(mk->mk_reserved, 0);
-
- if (idf->id_resmac)
- fatal("maximum identifier length insufficient");
- idf->id_resmac = mk->mk_key;
- mk++;
- }
- }
- /* Initialize __LINE__, __FILE__, __DATE__, __TIME__,
- and __STDC__ macro definitions.
- */
- clock = sys_time();
- tp = localtime(&clock);
- /* __DATE__ */
- sprint(dbuf, "\"%s %2d %d\"", months[tp->tm_mon],
- tp->tm_mday, tp->tm_year+1900);
- /* if (tp->tm_mday < 10) dbuf[5] = ' '; /* hack */
- macro_def(str2idf("__DATE__", 0), dbuf, -1, strlen(dbuf), NOUNDEF);
- /* __TIME__ */
- sprint(tbuf, "\"%02d:%02d:%02d\"", tp->tm_hour, tp->tm_min, tp->tm_sec);
- macro_def(str2idf("__TIME__", 0), tbuf, -1, strlen(tbuf), NOUNDEF);
- /* __LINE__ */
- macro_def(str2idf("__LINE__", 0), "0", -1, 1, NOUNDEF | FUNC);
- /* __FILE__ */
- macro_def(str2idf("__FILE__", 0), "", -1, 1, NOUNDEF | FUNC);
- /* __STDC__ */
- macro_def(str2idf("__STDC__", 0), "1", -1, 1, NOUNDEF);
- /* defined(??) */
- macro_def(str2idf("defined", 0), "", 1, 1, NOUNDEF | FUNC);
- }
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