require 'regen_lib.pl';
}
#use Fatal qw(open close rename chmod unlink);
+use strict;
+use warnings;
+
open DESC, 'regcomp.sym';
-$ind = 0;
+my $ind = 0;
+my (@name,@rest,@type,@code,@args,@longj);
+my ($desc,$lastregop);
while (<DESC>) {
- next if /^\s*($|\#)/;
- $ind++;
- chomp;
- ($name[$ind], $desc, $rest[$ind]) = split /\t+/, $_, 3;
- ($type[$ind], $code[$ind], $args[$ind], $longj[$ind])
- = split /[,\s]\s*/, $desc, 4;
+ s/#.*$//;
+ next if /^\s*$/;
+ s/\s*\z//;
+ if (/^-+\s*$/) {
+ $lastregop= $ind;
+ next;
+ }
+ unless ($lastregop) {
+ $ind++;
+ ($name[$ind], $desc, $rest[$ind]) = split /\t+/, $_, 3;
+ ($type[$ind], $code[$ind], $args[$ind], $longj[$ind])
+ = split /[,\s]\s*/, $desc, 4;
+ } else {
+ my ($type,@lists)=split /\s*\t+\s*/, $_;
+ die "No list? $type" if !@lists;
+ foreach my $list (@lists) {
+ my ($names,$special)=split /:/, $list , 2;
+ $special ||= "";
+ foreach my $name (split /,/,$names) {
+ my $real= $name eq 'resume'
+ ? "resume_$type"
+ : "${type}_$name";
+ my @suffix;
+ if (!$special) {
+ @suffix=("");
+ } elsif ($special=~/\d/) {
+ @suffix=(1..$special);
+ } elsif ($special eq 'FAIL') {
+ @suffix=("","_fail");
+ } else {
+ die "unknown :type ':$special'";
+ }
+ foreach my $suffix (@suffix) {
+ $ind++;
+ $name[$ind]="$real$suffix";
+ $type[$ind]=$type;
+ $rest[$ind]="state for $type";
+ }
+ }
+ }
+
+ }
}
+# use fixed width to keep the diffs between regcomp.pl recompiles
+# as small as possible.
+my ($width,$rwidth,$twidth)=(22,12,9);
+$lastregop ||= $ind;
+my $tot = $ind;
close DESC;
-$tot = $ind;
-die "Too many regexp opcodes! Maximum is 256, but there are $tot in file!"
- if $tot>256;
+die "Too many regexp/state opcodes! Maximum is 256, but there are $lastregop in file!"
+ if $lastregop>256;
-$tmp_h = 'tmp_reg.h';
+my $tmp_h = 'tmp_reg.h';
unlink $tmp_h if -f $tmp_h;
open OUT, ">$tmp_h";
+#*OUT=\*STDOUT;
binmode OUT;
-print OUT <<EOP;
+printf OUT <<EOP,
/* -*- buffer-read-only: t -*-
!!!!!!! DO NOT EDIT THIS FILE !!!!!!!
This file is built by regcomp.pl from regcomp.sym.
Any changes made here will be lost!
*/
-EOP
+/* Regops and State definitions */
+
+#define %*s\t%d
+#define %*s\t%d
-$ind = 0;
-while (++$ind <= $tot) {
- $oind = $ind - 1;
- $hind = sprintf "%#4x", $oind;
- print OUT <<EOP;
-#define $name[$ind] $oind /* $hind $rest[$ind] */
EOP
+ -$width, REGNODE_MAX => $lastregop - 1,
+ -$width, REGMATCH_STATE_MAX => $tot - 1
+;
+
+
+for ($ind=1; $ind <= $lastregop ; $ind++) {
+ my $oind = $ind - 1;
+ printf OUT "#define\t%*s\t%d\t/* %#04x %s */\n",
+ -$width, $name[$ind], $ind-1, $ind-1, $rest[$ind];
+}
+print OUT "\t/* ------------ States ------------- */\n";
+for ( ; $ind <= $tot ; $ind++) {
+ printf OUT "#define\t%*s\t(REGNODE_MAX + %d)\t/* %s */\n",
+ -$width, $name[$ind], $ind - $lastregop, $rest[$ind];
}
print OUT <<EOP;
+/* PL_regkind[] What type of regop or state is this. */
+
#ifndef DOINIT
EXTCONST U8 PL_regkind[];
#else
$ind = 0;
while (++$ind <= $tot) {
- print OUT <<EOP;
- $type[$ind], /* $name[$ind] */
-EOP
+ printf OUT "\t%*s\t/* %*s */\n",
+ -1-$twidth, "$type[$ind],", -$width, $name[$ind];
+ print OUT "\t/* ------------ States ------------- */\n"
+ if $ind == $lastregop and $lastregop != $tot;
}
print OUT <<EOP;
};
#endif
+/* regarglen[] - How large is the argument part of the node (in regnodes) */
#ifdef REG_COMP_C
static const U8 regarglen[] = {
EOP
$ind = 0;
-while (++$ind <= $tot) {
- $size = 0;
+while (++$ind <= $lastregop) {
+ my $size = 0;
$size = "EXTRA_SIZE(struct regnode_$args[$ind])" if $args[$ind];
- print OUT <<EOP;
- $size, /* $name[$ind] */
-EOP
+ printf OUT "\t%*s\t/* %*s */\n",
+ -37, "$size,",-$rwidth,$name[$ind];
}
print OUT <<EOP;
};
+/* reg_off_by_arg[] - Which argument holds the offset to the next node */
+
static const char reg_off_by_arg[] = {
EOP
$ind = 0;
-while (++$ind <= $tot) {
- $size = $longj[$ind] || 0;
+while (++$ind <= $lastregop) {
+ my $size = $longj[$ind] || 0;
- print OUT <<EOP;
- $size, /* $name[$ind] */
-EOP
+ printf OUT "\t%d,\t/* %*s */\n",
+ $size, -$rwidth, $name[$ind]
}
print OUT <<EOP;
};
-#ifdef DEBUGGING
-static const char * const reg_name[] = {
+#endif /* REG_COMP_C */
+
+/* reg_name[] - Opcode/state names in string form, for debugging */
+
+#ifndef DOINIT
+EXTCONST char * PL_reg_name[];
+#else
+EXTCONST char * const PL_reg_name[] = {
EOP
$ind = 0;
+my $ofs = 1;
+my $sym = "";
while (++$ind <= $tot) {
- $hind = sprintf "%#4x", $ind-1;
- $size = $longj[$ind] || 0;
-
- print OUT <<EOP;
- "$name[$ind]", /* $hind */
-EOP
+ my $size = $longj[$ind] || 0;
+
+ printf OUT "\t%*s\t/* $sym%#04x */\n",
+ -3-$width,qq("$name[$ind]",), $ind - $ofs;
+ if ($ind == $lastregop and $lastregop != $tot) {
+ print OUT "\t/* ------------ States ------------- */\n";
+ $ofs = $lastregop;
+ $sym = 'REGNODE_MAX +';
+ }
+
}
print OUT <<EOP;
};
+#endif /* DOINIT */
-static const int reg_num = $tot;
+/* PL_reg_extflags_name[] - Opcode/state names in string form, for debugging */
-#endif /* DEBUGGING */
-#endif /* REG_COMP_C */
+#ifndef DOINIT
+EXTCONST char * PL_reg_extflags_name[];
+#else
+EXTCONST char * const PL_reg_extflags_name[] = {
+EOP
+
+open my $fh,"<","regexp.h" or die "Can't read regexp.h: $!";
+my %rxfv;
+my $val = 0;
+my %reverse;
+while (<$fh>) {
+ if (/#define\s+(RXf_\w+)\s+(0x[A-F\d]+)/i) {
+ my $newval = eval $2;
+ if($val & $newval) {
+ die sprintf "Both $1 and $reverse{$newval} use %08X", $newval;
+ }
+ $val|=$newval;
+ $rxfv{$1}= $newval;
+ $reverse{$newval} = $1;
+ }
+}
+my %vrxf=reverse %rxfv;
+printf OUT "\t/* Bits in extflags defined: %032b */\n",$val;
+for (0..31) {
+ my $n=$vrxf{2**$_}||"UNUSED_BIT_$_";
+ $n=~s/^RXf_(PMf_)?//;
+ printf OUT qq(\t%-20s/* 0x%08x */\n),
+ qq("$n",),2**$_;
+}
+
+print OUT <<EOP;
+};
+#endif /* DOINIT */
/* ex: set ro: */
EOP
-
close OUT or die "close $tmp_h: $!";
safer_rename $tmp_h, 'regnodes.h';