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[patch at 21983] factor out $^O eq 'darwin' from XSLoader.pm
[perl5.git] / regcomp.pl
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1BEGIN {
2 # Get function prototypes
9ad884cb 3 require 'regen_lib.pl';
36bb303b 4}
d09b2d29 5#use Fatal qw(open close rename chmod unlink);
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6use strict;
7use warnings;
8
d09b2d29 9open DESC, 'regcomp.sym';
d09b2d29 10
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11my $ind = 0;
12my (@name,@rest,@type,@code,@args,@longj);
13my ($desc,$lastregop);
d09b2d29 14while (<DESC>) {
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15 s/#.*$//;
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;
51 $rest[$ind]="Regmatch state for $type";
52 }
53 }
54 }
55
56 }
57}
58my ($width,$rwidth,$twidth)=(0,0,0);
59for (1..@name) {
60 $width=length($name[$_]) if $name[$_] and $width<length($name[$_]);
61 $twidth=length($type[$_]) if $type[$_] and $twidth<length($type[$_]);
62 $rwidth=$width if $_ == $lastregop;
d09b2d29 63}
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64$lastregop ||= $ind;
65my $tot = $ind;
d09b2d29 66close DESC;
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67die "Too many regexp/state opcodes! Maximum is 256, but there are $lastregop in file!"
68 if $lastregop>256;
d09b2d29 69
03363afd 70my $tmp_h = 'tmp_reg.h';
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71
72unlink $tmp_h if -f $tmp_h;
73
74open OUT, ">$tmp_h";
03363afd 75#*OUT=\*STDOUT;
dfb1454f 76binmode OUT;
d09b2d29 77
03363afd 78printf OUT <<EOP,
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79/* -*- buffer-read-only: t -*-
80 !!!!!!! DO NOT EDIT THIS FILE !!!!!!!
9b155405 81 This file is built by regcomp.pl from regcomp.sym.
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82 Any changes made here will be lost!
83*/
84
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85/* Regops and State definitions */
86
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87#define %*s\t%d
88#define %*s\t%d
89
d09b2d29 90EOP
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91 -$width, REGNODE_MAX => $lastregop - 1,
92 -$width, REGMATCH_STATE_MAX => $tot - 1
93;
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94
95$ind = 0;
96while (++$ind <= $tot) {
03363afd 97 my $oind = $ind - 1;
f9f4320a 98 printf OUT "#define\t%*s\t%d\t/* %#04x %s */\n",
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99 -$width, $name[$ind], $ind-1, $ind-1, $rest[$ind];
100 print OUT "\n\t/* ------------ States ------------- */\n\n"
101 if $ind == $lastregop and $lastregop != $tot;
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102}
103
104print OUT <<EOP;
03363afd 105
6bda09f9 106/* PL_regkind[] What type of regop or state is this. */
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107
108#ifndef DOINIT
22c35a8c 109EXTCONST U8 PL_regkind[];
d09b2d29 110#else
22c35a8c 111EXTCONST U8 PL_regkind[] = {
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112EOP
113
114$ind = 0;
115while (++$ind <= $tot) {
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116 printf OUT "\t%*s\t/* %*s */\n",
117 -1-$twidth, "$type[$ind],", -$width, $name[$ind];
118 print OUT "\t/* ------------ States ------------- */\n"
119 if $ind == $lastregop and $lastregop != $tot;
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120}
121
122print OUT <<EOP;
123};
124#endif
125
6bda09f9 126/* regarglen[] - How large is the argument part of the node (in regnodes) */
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127
128#ifdef REG_COMP_C
29de9391 129static const U8 regarglen[] = {
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130EOP
131
132$ind = 0;
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133while (++$ind <= $lastregop) {
134 my $size = 0;
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135 $size = "EXTRA_SIZE(struct regnode_$args[$ind])" if $args[$ind];
136
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137 printf OUT "\t%*s\t/* %*s */\n",
138 -37, "$size,",-$rwidth,$name[$ind];
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139}
140
141print OUT <<EOP;
142};
143
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144/* reg_off_by_arg[] - Which argument holds the offset to the next node */
145
29de9391 146static const char reg_off_by_arg[] = {
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147EOP
148
149$ind = 0;
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150while (++$ind <= $lastregop) {
151 my $size = $longj[$ind] || 0;
9b155405 152
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153 printf OUT "\t%d,\t/* %*s */\n",
154 $size, -$rwidth, $name[$ind]
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155}
156
157print OUT <<EOP;
158};
9b155405 159
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160/* reg_name[] - Opcode/state names in string form, for debugging */
161
9b155405 162#ifdef DEBUGGING
6d9c9890 163const char * reg_name[] = {
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164EOP
165
166$ind = 0;
167while (++$ind <= $tot) {
03363afd 168 my $size = $longj[$ind] || 0;
9b155405 169
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170 printf OUT "\t%*s\t/* %#04x */\n",
171 -3-$width,qq("$name[$ind]",),$ind-1;
172 print OUT "\t/* ------------ States ------------- */\n"
173 if $ind == $lastregop and $lastregop != $tot;
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174}
175
176print OUT <<EOP;
177};
9b155405 178#endif /* DEBUGGING */
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179#else
180#ifdef DEBUGGING
6d9c9890 181extern const char * reg_name[];
03363afd 182#endif
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183#endif /* REG_COMP_C */
184
37442d52 185/* ex: set ro: */
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186EOP
187
36bb303b 188close OUT or die "close $tmp_h: $!";
d09b2d29 189
36bb303b 190safer_rename $tmp_h, 'regnodes.h';