52 lines
902 B
Perl
52 lines
902 B
Perl
use 5.20.0;
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my @commands = <>;
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my $i = 0;
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my %reg;
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my $last_played;
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use experimental qw/ signatures /;
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sub valof($x) {
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my $y = $x =~ /\d/ ? $x : $reg{$x};
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die $_ if $y eq 'Inf';
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return $y;
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}
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my $vr = qr/(-?\d+|.)/;
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while() {
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$_ = $commands[$i++];
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warn $_ if /\bb\b/;
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if( /snd (.)/ ) {
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$last_played = valof($1);
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}
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elsif( /set (.) $vr/ ) {
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$reg{$1} = valof($2);
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}
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elsif( /add (.) $vr/ ) {
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$reg{$1} += valof($2);
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}
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elsif( /mul (.) $vr/ ) {
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$reg{$1} *= valof($2);
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}
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elsif( /mul (.) $vr/ ) {
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$reg{$1} *= valof($2);
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}
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elsif( /mod (.) $vr/ ) {
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$reg{$1} %= valof($2);
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}
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elsif( /jgz (.) $vr/ ) {
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next unless $reg{$1} > 0;
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$i += -1 + valof($2);
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}
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elsif( /rcv (.)/ ) {
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next unless $reg{$1};
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die $last_played;
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}
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else { die "wut? $_"; }
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}
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