49 lines
1.0 KiB
Perl
Executable File
49 lines
1.0 KiB
Perl
Executable File
#! /usr/local/bin/perl -w
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use Parse::RecDescent;
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#$RD_TRACE=1;
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#$RD_HINT=1;
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my $parser = Parse::RecDescent->new(<<'EOG') or die;
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list1N: <rightop: term ',' term>(s)
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list12: <rightop: term ',' term>(..2)
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list2N: <rightop: term ',' term>(2..)
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list01: <rightop: term ',' term>(?)
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list: <rightop: term ',' term>
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list0N: <rightop: term ',' term>(s?)
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list23: <rightop: term ',' term>(2..3)
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list03: <rightop: term ',' term>(0..3)
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term: 't'
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EOG
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while (<DATA>)
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{
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print;
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print "\tlist:\t", @{$parser->list($_)||['undef']}, "\n";
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print "\tlist01:\t", @{$parser->list01($_)||['undef']}, "\n";
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print "\tlist0N:\t", @{$parser->list0N($_)||['undef']}, "\n";
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print "\tlist1N:\t", @{$parser->list1N($_)||['undef']}, "\n";
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print "\tlist2N:\t", @{$parser->list2N($_)||['undef']}, "\n";
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print "\tlist23:\t", @{$parser->list23($_)||['undef']}, "\n";
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print "\tlist12:\t", @{$parser->list12($_)||['undef']}, "\n";
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print "\tlist03:\t", @{$parser->list03($_)||['undef']}, "\n";
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print "-----\n";
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}
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__DATA__
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t
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t,t
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t,t,t
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t,t,t,t
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