PCT: Revision 9
or [Parrot] Compiler Toolkit is a set mostly in [PIR] written software, aimed to help implementors of high level languages ([HLL]) like Perl, Ruby, Python or LOLCODE (see [Parrot Compiler]).
* *[NQP]* - Subset of Perl 6.
* *[PGE]* - Parrot Grammar Engine, early implementation of Perl 6 regex in [PIR]. Absolete since NQP does regex too.
* *[TGE]* - Tree Grammar Engine, in [PIR] written tool for transformations of [AST]<http://docs.parrot.org/parrot/latest/html/docs/pdds/pdd26_ast.pod.html> (abstract syntax trees).