gas/testsuite/gas/rx/explode

   1 #!/usr/bin/perl
   2 # -*- perl -*-
   3
   4 #  Copyright (C) 2006 Red Hat Inc.
   5 #
   6 #  This file is part of GAS, the GNU Assembler.
   7 #
   8 #  GAS is free software; you can redistribute it and/or modify
   9 #  it under the terms of the GNU General Public License as published by
  10 #  the Free Software Foundation; either version 2, or (at your option)
  11 #  any later version.
  12 #
  13 #  GAS is distributed in the hope that it will be useful,
  14 #  but WITHOUT ANY WARRANTY; without even the implied warranty of
  15 #  MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
  16 #  GNU General Public License for more details.
  17 #
  18 #  You should have received a copy of the GNU General Public License
  19 #  along with GAS; see the file COPYING.  If not, write to
  20 #  the Free Software Foundation, 59 Temple Place - Suite 330,
  21 #  Boston, MA 02111-1307, USA.  */
  22
  23 %myfiles = ();
  24
  25 $incdir = ".";
  26
  27 while ($ARGV[0] =~ /^-/) {
  28     $opt = shift;
  29     if ($opt eq "-I") {
  30         $incdir = shift;
  31     }
  32 }
  33
  34 $infile = shift;
  35 $outfile = shift;
  36
  37 $inbase = $infile;
  38 $inbase =~ s@.*/@@;
  39 $inbase =~ s@[^a-zA-Z0-9].*@@;
  40
  41 $t = 0;
  42 $errors = 0;
  43
  44 if ($outfile) {
  45     open(OUT, ">$outfile");
  46 } else {
  47     open(OUT, ">&STDOUT");
  48 }
  49
  50 open(I, "$incdir/macros.inc") || die("$incdir/macros.inc: $!");
  51 &read_file();
  52 close I;
  53 open(I, $infile) || die("$infile: $!");
  54 &read_file();
  55 close I;
  56
  57 sub read_file {
  58     while (<I>) {
  59         $line ++;
  60         next if /^;/;
  61     s/[\r\n]+$//;
  62         if (/^macro\s+(\S+)\s+(.*)/) {
  63             ($name, $val) = ($1,$2);
  64             print "set macro \"$name\" to \"$val\"\n" if $t;
  65             $macro{$name} = $val;
  66         } elsif (/\S/) {
  67             &explode($_);
  68         }
  69     }
  70 }
  71
  72 exit ($errors);
  73
  74 # There's no way to quote braces so you can output them :-P
  75
  76 sub explode {
  77     my ($s) = @_;
  78     my ($a, $b, $p, $e, @params);
  79
  80     print "explode($s)\n" if $t;
  81
  82     ($b, $a, @params) = &split_braces($s);
  83     @params = explode_params (@params);
  84     if (! $a && ! @params) {
  85         if ($t) {
  86             print "\033[33m$s\033[0m\n";
  87         } else {
  88             print OUT "$s\n";
  89         }
  90         return;
  91     }
  92     if (@params == 1 && defined $macro{$params[0]}) {
  93         $p = $macro{$params[0]};
  94         &explode ("$b$p$a");
  95     } else {
  96         for $p (@params) {
  97             &explode ("$b$p$a");
  98         }
  99     }
 100 }
 101
 102 sub explode_params {
 103     my (@p) = @_;
 104     my ($p,@r);
 105
 106     @r = ();
 107     while (@p) {
 108         $p = shift @p;
 109         ($b,$a,@e) = split_braces ($p);
 110         if (defined $a) {
 111             for $e (reverse @e) {
 112                 unshift (@p, "$b$e$a");
 113             }
 114         } else {
 115             push (@r, $p);
 116         }
 117     }
 118     return @r;
 119 }
 120
 121 sub getmacro {
 122     my ($v) = $macro{$_[0]};
 123     if (! defined $v) {
 124         print STDERR "$line: Error: macro $_[0] not defined\n";
 125         $errors ++;
 126     }
 127     return $v;
 128 }
 129
 130 sub expand_macros {
 131     my ($l) = @_;
 132     0 while $l =~ s/{([^{};]+)}/&getmacro($1)/ge;
 133     return $l;
 134 }
 135
 136 # returns (before, after, list of variances)
 137 sub split_braces {
 138     my ($l) = @_;
 139     my (@l, $i, $a, @parms, $b, $n,$p);
 140
 141     print "split_braces($l) = (" if $t;
 142
 143     $l = &expand_macros ($l);
 144
 145     if ($l !~ /\{.*\}/) {
 146         print "nothing)\n" if $t;
 147         return ($l);
 148     }
 149     if ($l =~ /^{([^{};]+)}/) {
 150         print "macro:", $macro{$1}, ")\n" if $t;
 151         return (&getmacro($1), "");
 152     }
 153
 154     $n = 0;
 155     @parms = ('');
 156     $p = 0;
 157
 158     ($a, $l) = $l =~ m@^([^\{]*)\{(.*)@;
 159     @l = split(//, $l);
 160
 161     while (defined ($i = shift @l)) {
 162         if ($n == 0) {
 163             print "\033[32m$i" if $t;
 164             if ($i eq '}') {
 165                 print "\033[0m$a, ", join('', @l), ", (", join("\033[31m;\033[0m", @parms), ")\n" if $t;
 166                 return ($a, join('',@l), @parms);
 167             } elsif ($i eq ';') {
 168                 $p ++;
 169                 $parms[$p] = '';
 170             } else {
 171                 $parms[$p] .= $i;
 172                 $n ++ if $i eq '{';
 173             }
 174         } else {
 175             print "\033[34m$i" if $t;
 176             $n ++ if $i eq '{';
 177             $n -- if $i eq '}';
 178             $parms[$p] .= $i;
 179         }
 180     }
 181     print "$a, <null>, (", join(';', @parms), ")\n" if $t;
 182     return ($a, "", @parms);
 183 }
 184
 185 __END__;
 186
 187 macro rest c,d
 188         foo {a;b},{{rest};e;}
 189
 190 expands to:
 191
 192         foo a,c
 193         foo a,d
 194         foo a,e
 195         foo a,
 196         foo b,c
 197         foo b,d
 198         foo b,e
 199         foo b,