Parse::RecDescent is a large, object-oriented, well-documented Perl 5 module. It incrementally generates top-down recursive-descent text parsers from simple yacc-like grammar specifications.
This module is best for learning about parsing, for designing complex (context-sensitive or dynamic) grammars, or any situation where input is short or performance is no issue.
For alternatives, try the "official" successor Regexp::Grammars; or Parse::Yapp or Parse::EYapp.
Questions tagged [parse-recdescent]
21 questions
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Printing and concatenation with Parse::RecDescent
I am testing the grammar from P::RD tutorial in order to develop my own grammar.
I haven't figured out how to print a string declaration and append '$' to the front of it.
For example "STRING sDir" should print out "$sDir". It is simple enough to…
Dorian06
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parsing abnf grammar using perl
Thanks for the inputs for question posted at link Parse::ABNF perl usage . I am still facing difficulty in resolving my problem. Request to check my problem below and provide pointers towards solution.
For now I have created the sip grammar in ABNF…
user3336154
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how to skip all single- and multi-line comments in a Parse::RecDescent parser
In Parse::RecDescent, how do I effectively ignore C++/Java style comments? This includes single-line ('//' until the end of the line) and multi-line (/everything between here/).
Nate Glenn
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Parse::RecDescent performance issue
I'm using Parse::RecDescent to parse lines in a Cisco IOS ACL. The ACL is used on the edge router of a large network, so it contains almost 8k lines which are set by the government. I'm looping through each of those lines and putting the values…
user342706
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Parse::RecDescent parse sub name
I use module Parse::RecDescent
and try to build grammar to catch perl sub name
why in my code
https://gist.github.com/1595532
not work gramma
get_sub:
NOWORD TEST NOWORD
on '>test1$' ? (variabble $perl_code1 )
use Modern::Perl;
use…
Николай Мишин
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Does a Recursive Predictive Descent Parser NEEDS to construct a complete syntax tree and store in memory?
I've been thinking and a question has arisen. Does this type of compiler really need the complete syntax tree in memory?
lzcmz
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