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PATH: usr / share / doc / perl-Parse-RecDescent-1.967009 / demo

#!/usr/bin/perl -ws

use Parse::RecDescent;

my $parser = new Parse::RecDescent q
{
	components: ganglia(s)

ganglia:    'ganglia' '{' cell(s) '}'

cell:	    'cell' '{' synapse(s) '}'

synapse:    'synapse' '{' WHATEVER '}'

WHATEVER:    /\d\.\d\.\d/   # OBVIOUSLY REPLACE THIS WITH WHATEVER :-)
			<defer: print "$item[1]\n" >

} or die "Bad grammar!\n";

my $text = '';

getnextchunk($text)				# GET FIRST CHUNK OF DATA
	or die "No data!\n";

$text =~ s/\s*define\s*NetworkDetails\s*{//	# EAT OUTERMOST OPENING BRACKET
	or die "Bad data! (expected 'define...')";

do
{
	$parser->components(\$text);		# TRY TO EAT GANGLIA
}
while (getnextchunk($text));			# APPEND THE NEXT CHUNK

$text =~ m/\s*}/		# CHECK FOR THE OUTERMOST CLOSING BRACKET
	or die "Unclosed 'define' (missing '}')!";

sub getnextchunk	# APPEND SOME MORE TEXT TO THE FIRST ARG
{
	my $wasmore = 0;
	for (1..10)		# OPTIMALLY, ONE LINE BIGGER THAN THE LARGEST
				# SINGLE GANGLIA DEFINITION, BUT ANY NUMBER
				# OF LINES WILL DO
	{
		my $nextline = <DATA>;
		defined $nextline or last;
		$_[0] .= $nextline;
		$wasmore++
	}
	return $wasmore;
}

__DATA__

define NetworkDetails
{
	ganglia {
		cell {
			synapse { 1.1.1 }
			synapse { 1.1.2 }
			synapse { 1.1.3 }
			synapse { 1.1.4 }
			synapse { 1.1.5 }
		}
		cell {
			synapse { 1.2.1 }
			synapse { 1.2.2 }
			synapse { 1.2.3 }
			synapse { 1.2.4 }
			synapse { 1.2.5 }
		}
		cell {
			synapse { 1.3.1 }
			synapse { 1.3.2 }
			synapse { 1.3.3 }
			synapse { 1.3.4 }
			synapse { 1.3.5 }
		}
		cell {
			synapse { 1.4.1 }
			synapse { 1.4.2 }
			synapse { 1.4.3 }
			synapse { 1.4.4 }
			synapse { 1.4.5 }
		}
	}

ganglia {
		cell {
			synapse { 2.1.1 }
			synapse { 2.1.2 }
			synapse { 2.1.3 }
			synapse { 2.1.4 }
			synapse { 2.1.5 }
		}
		cell {
			synapse { 2.2.1 }
			synapse { 2.2.2 }
			synapse { 2.2.3 }
			synapse { 2.2.4 }
			synapse { 2.2.5 }
		}
		cell {
			synapse { 2.3.1 }
			synapse { 2.3.2 }
			synapse { 2.3.3 }
			synapse { 2.3.4 }
			synapse { 2.3.5 }
		}
		cell {
			synapse { 2.4.1 }
			synapse { 2.4.2 }
			synapse { 2.4.3 }
			synapse { 2.4.4 }
			synapse { 2.4.5 }
		}
	}

ganglia {
		cell {
			synapse { 3.1.1 }
			synapse { 3.1.2 }
			synapse { 3.1.3 }
			synapse { 3.1.4 }
			synapse { 3.1.5 }
		}
		cell {
			synapse { 3.2.1 }
			synapse { 3.2.2 }
			synapse { 3.2.3 }
			synapse { 3.2.4 }
			synapse { 3.2.5 }
		}
		cell {
			synapse { 3.3.1 }
			synapse { 3.3.2 }
			synapse { 3.3.3 }
			synapse { 3.3.4 }
			synapse { 3.3.5 }
		}
		cell {
			synapse { 3.4.1 }
			synapse { 3.4.2 }
			synapse { 3.4.3 }
			synapse { 3.4.4 }
			synapse { 3.4.5 }
		}
	}

ganglia {
		cell {
			synapse { 4.1.1 }
			synapse { 4.1.2 }
			synapse { 4.1.3 }
			synapse { 4.1.4 }
			synapse { 4.1.5 }
		}
		cell {
			synapse { 4.2.1 }
			synapse { 4.2.2 }
			synapse { 4.2.3 }
			synapse { 4.2.4 }
			synapse { 4.2.5 }
		}
		cell {
			synapse { 4.3.1 }
			synapse { 4.3.2 }
			synapse { 4.3.3 }
			synapse { 4.3.4 }
			synapse { 4.3.5 }
		}
		cell {
			synapse { 4.4.1 }
			synapse { 4.4.2 }
			synapse { 4.4.3 }
			synapse { 4.4.4 }
			synapse { 4.4.5 }
		}
	}

}

[-] demo_cpp.pl [edit]
[-] demo_autorule.pl [edit]
[-] demo_errors.pl [edit]
[-] demo_piecewise.pl [edit]
[-] demo_logic.pl [edit]
[-] demo_skipcomment.pl [edit]
[-] demo_implicit.pl [edit]
[-] demo_separators.pl [edit]
[-] demo_perlparsing.pl [edit]
[-] demo_street.pl [edit]
[-] demo_scoredsep.pl [edit]
[-] demo.c [edit]
[-] demo_textgen.pl [edit]
[-] demo.pl [edit]
[-] demo_calc.pl [edit]
[+] ..
[-] demo_another_Cgrammar.pl [edit]
[-] demo_matchrule2.pl [edit]
[-] demo_mccoy.pl [edit]
[-] demo_restructure_painful.pl [edit]
[-] demo_methods.pl [edit]
[-] demo_language.pl [edit]
[-] demo_selfmod.pl [edit]
[-] demo_OOautoparsetree.pl [edit]
[-] demo_codeblock.pl [edit]
[-] demo_simplequery.pl [edit]
[-] demo_restructure_easy.pl [edit]
[-] demo_tokens.pl [edit]
[-] demo_decomment.pl [edit]
[-] demo_recipe.pl [edit]
[-] demo_delete.pl [edit]
[-] demo_lisplike.pl [edit]
[-] demo_bad.pl [edit]
[-] demo_arithmetic.pl [edit]
[-] demo_leftassoc.pl [edit]
[-] demo_PerlCSV.pl [edit]
[-] demo_metaRD.pm [edit]
[-] demo_derived.pl [edit]
[-] demo_opreps.pl [edit]
[-] demo_matchrule.pl [edit]
[-] demo_LaTeXish_autoact.pl [edit]
[-] demo_operator.pl [edit]
[-] demo_autoscoresep.pl [edit]
[-] demo_Cgrammar_v2.pl [edit]
[-] demo_NL2SQL.pl [edit]
[-] demo_Cgrammar.pl [edit]
[-] demo_randomsentence.pl [edit]
[-] demo_template.pl [edit]
[-] demo_quicklist.pl [edit]
[-] demo_itemhash.pl [edit]
[-] demo_buildcalc.pl [edit]
[-] demo_leftop.pl [edit]
[-] demo_decomment_nonlocal.pl [edit]
[-] demo_dot.pl [edit]
[-] demo_LaTeXish.pl [edit]
[-] demo_precalc.pl [edit]
[-] demo_eval.pl [edit]
[-] demo_autostub.pl [edit]
[-] demo_whoson.pl [edit]
[-] demo_lexer.pl [edit]
[-] demo_OOparsetree.pl [edit]
[-] demo_parsetree.pl [edit]
[-] demo_simple.pl [edit]
[-] demo_embedding.pl [edit]
[-] demo_simpleXML.pl [edit]
[-] demo_undumper.pl [edit]