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Add disabled support for saving and restoring the symbol table.

This commit is contained in:
christos 2016-01-16 17:00:07 +00:00
parent 8a4a35b9bc
commit 59e8ea8f4c
1 changed files with 37 additions and 2 deletions
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39
usr.bin/m4/look.c
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@ -1,4 +1,4 @@
/* $NetBSD: look.c,v 1.12 2012/03/20 20:34:58 matt Exp $ */
/* $NetBSD: look.c,v 1.13 2016/01/16 17:00:07 christos Exp $ */
/* $OpenBSD: look.c,v 1.21 2009/10/14 17:23:17 sthen Exp $ */
/*
@ -42,7 +42,7 @@
#include "nbtool_config.h"
#endif
#include <sys/cdefs.h>
__RCSID("$NetBSD: look.c,v 1.12 2012/03/20 20:34:58 matt Exp $");
__RCSID("$NetBSD: look.c,v 1.13 2016/01/16 17:00:07 christos Exp $");
#include <stdio.h>
#include <stdlib.h>
#include <stdint.h>
@ -278,3 +278,38 @@ macro_getbuiltin(const char *name)
return p;
}
#ifdef REAL_FREEZE
static void
recurse(FILE *f, ndptr n, struct macro_definition *d)
{
if (d->next != NULL)
recurse(f, n, d->next);
// skip built-ins, because it is cheaper to do so
// and initialize them manually
if (d->type & (NOARGS|NEEDARGS))
return;
fprintf(f, "%c%zu,%zu\n%s%s\n",
(d->type & (NOARGS|NEEDARGS)) ? 'F' : 'T',
strlen(n->name), strlen(d->defn),
n->name, d->defn);
}
static void
dump_entry(FILE *f, ndptr n)
{
if (n->d == NULL)
return;
recurse(f, n, n->d);
}
void
dump_state(FILE *f)
{
ndptr n;
unsigned int i;
for (n = ohash_first(&macros, &i); n != NULL;
n = ohash_next(&macros, &i))
dump_entry(f, n);
}
#endif