PATH:
usr
/
share
/
doc
/
perl-Parse-RecDescent-1.967009
/
demo
#!/usr/bin/perl -sw # PARSE LOGICAL EXPRESSIONS TO A "list of lists" PARSE TREE sub printtree { print " " x $_[0]; print "$_[1]:\n"; foreach ( @_[2..$#_] ) { if (ref($_)) { printtree($_[0]+1,@$_); } else { print " " x $_[0], "$_\n" } } print "\n"; } use Parse::RecDescent; $RD_AUTOACTION = q{ [@item] }; $grammar = q{ expr : disj disj : conj 'or' disj | conj conj : unary 'and' conj | unary unary : 'not' atom | '(' expr ')' | atom atom : /[a-z]+/i }; $parse = new Parse::RecDescent ($grammar); while (<DATA>) { my $tree = $parse->expr($_); printtree(0,@$tree) if $tree; } __DATA__ a and b and not c (c or d) and f
[-] demo_cpp.pl
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[-] demo_autorule.pl
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[-] demo_errors.pl
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[-] demo_piecewise.pl
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[-] demo_logic.pl
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[-] demo_skipcomment.pl
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[-] demo_implicit.pl
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[-] demo_separators.pl
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[-] demo_perlparsing.pl
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[-] demo_street.pl
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[-] demo_scoredsep.pl
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[-] demo.c
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[-] demo_textgen.pl
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[-] demo.pl
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[-] demo_calc.pl
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[+]
..
[-] demo_another_Cgrammar.pl
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[-] demo_matchrule2.pl
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[-] demo_mccoy.pl
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[-] demo_restructure_painful.pl
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[-] demo_methods.pl
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[-] demo_language.pl
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[-] demo_selfmod.pl
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[-] demo_OOautoparsetree.pl
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[-] demo_codeblock.pl
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[-] demo_simplequery.pl
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[-] demo_restructure_easy.pl
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[-] demo_tokens.pl
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[-] demo_decomment.pl
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[-] demo_recipe.pl
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[-] demo_delete.pl
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[-] demo_lisplike.pl
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[-] demo_bad.pl
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[-] demo_arithmetic.pl
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[-] demo_leftassoc.pl
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[-] demo_PerlCSV.pl
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[-] demo_metaRD.pm
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[-] demo_derived.pl
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[-] demo_opreps.pl
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[-] demo_matchrule.pl
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[-] demo_LaTeXish_autoact.pl
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[-] demo_operator.pl
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[-] demo_autoscoresep.pl
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[-] demo_Cgrammar_v2.pl
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[-] demo_NL2SQL.pl
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[-] demo_Cgrammar.pl
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[-] demo_randomsentence.pl
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[-] demo_template.pl
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[-] demo_quicklist.pl
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[-] demo_itemhash.pl
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[-] demo_buildcalc.pl
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[-] demo_leftop.pl
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[-] demo_decomment_nonlocal.pl
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[-] demo_dot.pl
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[-] demo_LaTeXish.pl
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[-] demo_precalc.pl
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[-] demo_eval.pl
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[-] demo_autostub.pl
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[-] demo_whoson.pl
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[-] demo_lexer.pl
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[-] demo_OOparsetree.pl
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[-] demo_parsetree.pl
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[-] demo_simple.pl
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[-] demo_embedding.pl
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[-] demo_simpleXML.pl
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[-] demo_undumper.pl
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