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mirror of https://git.FreeBSD.org/src.git synced 2024-12-23 11:18:54 +00:00
freebsd/contrib/perl5/embed.pl

316 lines
5.5 KiB
Raku
Executable File

#!/usr/bin/perl -w
require 5.003;
# XXX others that may need adding
# warnhook
# hints
# copline
my @extvars = qw(sv_undef sv_yes sv_no na dowarn
curcop compiling
tainting tainted stack_base stack_sp sv_arenaroot
curstash DBsub DBsingle debstash
rsfp
stdingv
defgv
errgv
rsfp_filters
perldb
diehook
dirty
perl_destruct_level
);
sub readsyms (\%$) {
my ($syms, $file) = @_;
%$syms = ();
local (*FILE, $_);
open(FILE, "< $file")
or die "embed.pl: Can't open $file: $!\n";
while (<FILE>) {
s/[ \t]*#.*//; # Delete comments.
if (/^\s*(\S+)\s*$/) {
$$syms{$1} = 1;
}
}
close(FILE);
}
readsyms %global, 'global.sym';
sub readvars(\%$$) {
my ($syms, $file,$pre) = @_;
%$syms = ();
local (*FILE, $_);
open(FILE, "< $file")
or die "embed.pl: Can't open $file: $!\n";
while (<FILE>) {
s/[ \t]*#.*//; # Delete comments.
if (/PERLVARI?C?\($pre(\w+)/) {
$$syms{$1} = 1;
}
}
close(FILE);
}
my %intrp;
my %thread;
readvars %intrp, 'intrpvar.h','I';
readvars %thread, 'thrdvar.h','T';
readvars %globvar, 'perlvars.h','G';
foreach my $sym (sort keys %intrp)
{
if (exists $global{$sym})
{
delete $global{$sym};
warn "$sym in global.sym as well as intrpvar.h\n";
}
}
foreach my $sym (sort keys %globvar)
{
if (exists $global{$sym})
{
delete $global{$sym};
warn "$sym in global.sym as well as perlvars.h\n";
}
}
foreach my $sym (sort keys %thread)
{
warn "$sym in intrpvar.h as well as thrdvar.h\n" if exists $intrp{$sym};
if (exists $global{$sym})
{
delete $global{$sym};
warn "$sym in global.sym as well as thrdvar.h\n";
}
}
sub hide ($$) {
my ($from, $to) = @_;
my $t = int(length($from) / 8);
"#define $from" . "\t" x ($t < 3 ? 3 - $t : 1) . "$to\n";
}
sub embed ($) {
my ($sym) = @_;
hide($sym, "Perl_$sym");
}
sub embedvar ($) {
my ($sym) = @_;
# hide($sym, "Perl_$sym");
return '';
}
sub multon ($$$) {
my ($sym,$pre,$ptr) = @_;
hide("PL_$sym", "($ptr$pre$sym)");
}
sub multoff ($$) {
my ($sym,$pre) = @_;
return hide("PL_$pre$sym", "PL_$sym");
}
unlink 'embed.h';
open(EM, '> embed.h')
or die "Can't create embed.h: $!\n";
print EM <<'END';
/* !!!!!!! DO NOT EDIT THIS FILE !!!!!!!
This file is built by embed.pl from global.sym, intrpvar.h,
and thrdvar.h. Any changes made here will be lost!
*/
/* (Doing namespace management portably in C is really gross.) */
/* EMBED has no run-time penalty, but helps keep the Perl namespace
from colliding with that used by other libraries pulled in
by extensions or by embedding perl. Allow a cc -DNO_EMBED
override, however, to keep binary compatability with previous
versions of perl.
*/
#ifndef NO_EMBED
# define EMBED 1
#endif
/* Hide global symbols? */
#ifdef EMBED
END
for $sym (sort keys %global) {
print EM embed($sym);
}
print EM <<'END';
#endif /* EMBED */
END
close(EM);
unlink 'embedvar.h';
open(EM, '> embedvar.h')
or die "Can't create embedvar.h: $!\n";
print EM <<'END';
/* !!!!!!! DO NOT EDIT THIS FILE !!!!!!!
This file is built by embed.pl from global.sym, intrpvar.h,
and thrdvar.h. Any changes made here will be lost!
*/
/* (Doing namespace management portably in C is really gross.) */
/* EMBED has no run-time penalty, but helps keep the Perl namespace
from colliding with that used by other libraries pulled in
by extensions or by embedding perl. Allow a cc -DNO_EMBED
override, however, to keep binary compatability with previous
versions of perl.
*/
/* Put interpreter-specific symbols into a struct? */
#ifdef MULTIPLICITY
#ifndef USE_THREADS
/* If we do not have threads then per-thread vars are per-interpreter */
END
for $sym (sort keys %thread) {
print EM multon($sym,'T','PL_curinterp->');
}
print EM <<'END';
#endif /* !USE_THREADS */
/* These are always per-interpreter if there is more than one */
END
for $sym (sort keys %intrp) {
print EM multon($sym,'I','PL_curinterp->');
}
print EM <<'END';
#else /* !MULTIPLICITY */
END
for $sym (sort keys %intrp) {
print EM multoff($sym,'I');
}
print EM <<'END';
#ifndef USE_THREADS
END
for $sym (sort keys %thread) {
print EM multoff($sym,'T');
}
print EM <<'END';
#endif /* USE_THREADS */
/* Hide what would have been interpreter-specific symbols? */
#ifdef EMBED
END
for $sym (sort keys %intrp) {
print EM embedvar($sym);
}
print EM <<'END';
#ifndef USE_THREADS
END
for $sym (sort keys %thread) {
print EM embedvar($sym);
}
print EM <<'END';
#endif /* USE_THREADS */
#endif /* EMBED */
#endif /* MULTIPLICITY */
/* Now same trickey for per-thread variables */
#ifdef USE_THREADS
END
for $sym (sort keys %thread) {
print EM multon($sym,'T','thr->');
}
print EM <<'END';
#endif /* USE_THREADS */
#ifdef PERL_GLOBAL_STRUCT
END
for $sym (sort keys %globvar) {
print EM multon($sym,'G','PL_Vars.');
}
print EM <<'END';
#else /* !PERL_GLOBAL_STRUCT */
END
for $sym (sort keys %globvar) {
print EM multoff($sym,'G');
}
print EM <<'END';
#ifdef EMBED
END
for $sym (sort keys %globvar) {
print EM embedvar($sym);
}
print EM <<'END';
#endif /* EMBED */
#endif /* PERL_GLOBAL_STRUCT */
END
print EM <<'END';
#ifndef MIN_PERL_DEFINE
END
for $sym (sort @extvars) {
print EM hide($sym,"PL_$sym");
}
print EM <<'END';
#endif /* MIN_PERL_DEFINE */
END
close(EM);