in reply to
Writing a Programming Language in Perl
Parsing Strings and Trees with
Parse::Eyapp
(An Introduction to Compiler Construction
http://search.cpan.org/dist/HOP-Lexer/lib/HOP/Lexer/Article.pod
Lexing Without Grammars: When Regular Expressions Suck
http://hop.perl.plover.com/Examples/ALL/calculator
http://hop.perl.plover.com/Examples/ALL/regex-parser
http://hop.perl.plover.com/linogram/
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Re: Writing a Programming Language in Perl
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