RE: [PATCH] compress 2.018
[p5sagit/p5-mst-13.2.git] / regcomp.pl
CommitLineData
36bb303b 1BEGIN {
2 # Get function prototypes
9ad884cb 3 require 'regen_lib.pl';
36bb303b 4}
d09b2d29 5#use Fatal qw(open close rename chmod unlink);
03363afd 6use strict;
7use warnings;
8
d09b2d29 9open DESC, 'regcomp.sym';
d09b2d29 10
03363afd 11my $ind = 0;
12my (@name,@rest,@type,@code,@args,@longj);
13my ($desc,$lastregop);
d09b2d29 14while (<DESC>) {
03363afd 15 s/#.*$//;
16 next if /^\s*$/;
17 s/\s*\z//;
18 if (/^-+\s*$/) {
19 $lastregop= $ind;
20 next;
21 }
22 unless ($lastregop) {
23 $ind++;
24 ($name[$ind], $desc, $rest[$ind]) = split /\t+/, $_, 3;
25 ($type[$ind], $code[$ind], $args[$ind], $longj[$ind])
26 = split /[,\s]\s*/, $desc, 4;
27 } else {
28 my ($type,@lists)=split /\s*\t+\s*/, $_;
29 die "No list? $type" if !@lists;
30 foreach my $list (@lists) {
31 my ($names,$special)=split /:/, $list , 2;
32 $special ||= "";
33 foreach my $name (split /,/,$names) {
34 my $real= $name eq 'resume'
35 ? "resume_$type"
36 : "${type}_$name";
37 my @suffix;
38 if (!$special) {
39 @suffix=("");
40 } elsif ($special=~/\d/) {
41 @suffix=(1..$special);
42 } elsif ($special eq 'FAIL') {
43 @suffix=("","_fail");
44 } else {
45 die "unknown :type ':$special'";
46 }
47 foreach my $suffix (@suffix) {
48 $ind++;
49 $name[$ind]="$real$suffix";
50 $type[$ind]=$type;
24b23f37 51 $rest[$ind]="state for $type";
03363afd 52 }
53 }
54 }
55
56 }
57}
5d458dd8 58# use fixed width to keep the diffs between regcomp.pl recompiles
59# as small as possible.
60my ($width,$rwidth,$twidth)=(22,12,9);
03363afd 61$lastregop ||= $ind;
62my $tot = $ind;
d09b2d29 63close DESC;
03363afd 64die "Too many regexp/state opcodes! Maximum is 256, but there are $lastregop in file!"
65 if $lastregop>256;
d09b2d29 66
03363afd 67my $tmp_h = 'tmp_reg.h';
d09b2d29 68
69unlink $tmp_h if -f $tmp_h;
70
424a4936 71my $out = safer_open($tmp_h);
d09b2d29 72
424a4936 73printf $out <<EOP,
37442d52 74/* -*- buffer-read-only: t -*-
75 !!!!!!! DO NOT EDIT THIS FILE !!!!!!!
9b155405 76 This file is built by regcomp.pl from regcomp.sym.
d09b2d29 77 Any changes made here will be lost!
78*/
79
6bda09f9 80/* Regops and State definitions */
81
03363afd 82#define %*s\t%d
83#define %*s\t%d
84
d09b2d29 85EOP
f9f4320a 86 -$width, REGNODE_MAX => $lastregop - 1,
87 -$width, REGMATCH_STATE_MAX => $tot - 1
88;
d09b2d29 89
24b23f37 90
91for ($ind=1; $ind <= $lastregop ; $ind++) {
03363afd 92 my $oind = $ind - 1;
424a4936 93 printf $out "#define\t%*s\t%d\t/* %#04x %s */\n",
03363afd 94 -$width, $name[$ind], $ind-1, $ind-1, $rest[$ind];
24b23f37 95}
424a4936 96print $out "\t/* ------------ States ------------- */\n";
24b23f37 97for ( ; $ind <= $tot ; $ind++) {
424a4936 98 printf $out "#define\t%*s\t(REGNODE_MAX + %d)\t/* %s */\n",
24b23f37 99 -$width, $name[$ind], $ind - $lastregop, $rest[$ind];
d09b2d29 100}
101
424a4936 102print $out <<EOP;
03363afd 103
6bda09f9 104/* PL_regkind[] What type of regop or state is this. */
d09b2d29 105
106#ifndef DOINIT
22c35a8c 107EXTCONST U8 PL_regkind[];
d09b2d29 108#else
22c35a8c 109EXTCONST U8 PL_regkind[] = {
d09b2d29 110EOP
111
112$ind = 0;
113while (++$ind <= $tot) {
424a4936 114 printf $out "\t%*s\t/* %*s */\n",
03363afd 115 -1-$twidth, "$type[$ind],", -$width, $name[$ind];
424a4936 116 print $out "\t/* ------------ States ------------- */\n"
03363afd 117 if $ind == $lastregop and $lastregop != $tot;
d09b2d29 118}
119
424a4936 120print $out <<EOP;
d09b2d29 121};
122#endif
123
6bda09f9 124/* regarglen[] - How large is the argument part of the node (in regnodes) */
d09b2d29 125
126#ifdef REG_COMP_C
29de9391 127static const U8 regarglen[] = {
d09b2d29 128EOP
129
130$ind = 0;
03363afd 131while (++$ind <= $lastregop) {
132 my $size = 0;
d09b2d29 133 $size = "EXTRA_SIZE(struct regnode_$args[$ind])" if $args[$ind];
134
424a4936 135 printf $out "\t%*s\t/* %*s */\n",
03363afd 136 -37, "$size,",-$rwidth,$name[$ind];
d09b2d29 137}
138
424a4936 139print $out <<EOP;
d09b2d29 140};
141
6bda09f9 142/* reg_off_by_arg[] - Which argument holds the offset to the next node */
143
29de9391 144static const char reg_off_by_arg[] = {
d09b2d29 145EOP
146
147$ind = 0;
03363afd 148while (++$ind <= $lastregop) {
149 my $size = $longj[$ind] || 0;
9b155405 150
424a4936 151 printf $out "\t%d,\t/* %*s */\n",
03363afd 152 $size, -$rwidth, $name[$ind]
d09b2d29 153}
154
424a4936 155print $out <<EOP;
d09b2d29 156};
9b155405 157
13d6edb4 158#endif /* REG_COMP_C */
159
6bda09f9 160/* reg_name[] - Opcode/state names in string form, for debugging */
161
22429478 162#ifndef DOINIT
13d6edb4 163EXTCONST char * PL_reg_name[];
22429478 164#else
4764e399 165EXTCONST char * const PL_reg_name[] = {
9b155405 166EOP
167
168$ind = 0;
24b23f37 169my $ofs = 1;
170my $sym = "";
9b155405 171while (++$ind <= $tot) {
03363afd 172 my $size = $longj[$ind] || 0;
9b155405 173
424a4936 174 printf $out "\t%*s\t/* $sym%#04x */\n",
24b23f37 175 -3-$width,qq("$name[$ind]",), $ind - $ofs;
176 if ($ind == $lastregop and $lastregop != $tot) {
424a4936 177 print $out "\t/* ------------ States ------------- */\n";
24b23f37 178 $ofs = $lastregop;
179 $sym = 'REGNODE_MAX +';
180 }
181
9b155405 182}
183
424a4936 184print $out <<EOP;
9b155405 185};
22429478 186#endif /* DOINIT */
d09b2d29 187
f7819f85 188/* PL_reg_extflags_name[] - Opcode/state names in string form, for debugging */
189
190#ifndef DOINIT
191EXTCONST char * PL_reg_extflags_name[];
192#else
193EXTCONST char * const PL_reg_extflags_name[] = {
d09b2d29 194EOP
195
f7819f85 196open my $fh,"<","regexp.h" or die "Can't read regexp.h: $!";
197my %rxfv;
c8e4cf8b 198my $val = 0;
199my %reverse;
f7819f85 200while (<$fh>) {
201 if (/#define\s+(RXf_\w+)\s+(0x[A-F\d]+)/i) {
c8e4cf8b 202 my $newval = eval $2;
203 if($val & $newval) {
204 die sprintf "Both $1 and $reverse{$newval} use %08X", $newval;
205 }
206 $val|=$newval;
207 $rxfv{$1}= $newval;
208 $reverse{$newval} = $1;
f7819f85 209 }
210}
211my %vrxf=reverse %rxfv;
424a4936 212printf $out "\t/* Bits in extflags defined: %032b */\n",$val;
f7819f85 213for (0..31) {
214 my $n=$vrxf{2**$_}||"UNUSED_BIT_$_";
215 $n=~s/^RXf_(PMf_)?//;
424a4936 216 printf $out qq(\t%-20s/* 0x%08x */\n),
f7819f85 217 qq("$n",),2**$_;
218}
219
424a4936 220print $out <<EOP;
f7819f85 221};
222#endif /* DOINIT */
223
224/* ex: set ro: */
225EOP
08858ed2 226safer_close($out);
d09b2d29 227
424a4936 228rename_if_different $tmp_h, 'regnodes.h';