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