Parse::RecDescent

Description

Parse::RecDescent is a Perl module to generate Recursive-Descent Parsers. SYNOPSIS use Parse::RecDescent; # Generate a parser from the specification in $grammar: $parser = new Parse::RecDescent ($grammar); # Generate a parser from the specification in $othergrammar $anotherparser = new Parse::RecDescent ($othergrammar); # Parse $text using rule startrule (which must be # defined in $grammar): $parser->startrule($text); # Parse $text using rule otherrule (which must also # be defined in $grammar): $parser->otherrule($text); # Change the universal token prefix pattern # (the default is: s*): $Parse::RecDescent::skip = [ t]+; # Replace productions of existing rules (or create new ones) # with the productions defined in $newgrammar: $parser->Replace($newgrammar); # Extend existing rules (or create new ones) # by adding extra productions defined in $moregrammar: $parser->Extend($moregrammar); # Global flags (useful as command line arguments under -s): $::RD_ERRORS # unless undefined, report fatal errors $::RD_WARN # unless undefined, also report non-fatal problems $::RD_HINT # if defined, also suggestion remedies $::RD_TRACE # if defined, also trace parsers behaviour $::RD_AUTOSTUB # if defined, generates "stubs" for undefined rules $::RD_AUTOACTION # if defined, appends specified action to productions Parse::RecDescent incrementally generates top-down recursive-descent text parsers from simple yacc-like grammar specifications..

Recdescent - Rd - Parserecdescent - Descent Parsers - Perl Module - Defined - Productions - Generate - Parse - Parser - Grammar - Libraries - Programming

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