Parrot is a virtual machine designed to efficiently compile and execute bytecode for dynamic languages. Parrot currently hosts a variety of language implementations in various stages of completion, including Tcl, Javascript, Ruby, Lua, Scheme, PHP, Python, Perl 6, APL, and a .NET bytecode translator. Parrot is not about parrots, though we are rather fond of them for obvious reasons.

Parrot Documentation Revision Effort (Blog un)

Finally! I have managed to find enough time -- in the wee hours of the morning no less -- and a stable current of electricity -- meaning the power company has finished its little poll-replacement project -- to push a new 'documentation_revisions' branch to the parrot repo. This is the branch from which anyone involved with the documentation revision effort will work. Hopefully, that is, if I've gotten everything correct. (I make no pretensions here to knowing or to understanding, well, how git works.

Parrot for Dummies (which means me! :-)

This is just a quick, first blog post to ensure everything is working correctly.

Cheers!

Alvis

Parrot 3.9.0 "Archaeopteryx" Released

On behalf of the Parrot team, I'm proud to announce Parrot 3.9.0 "Archaeopteryx".
Parrot (http://parrot.org/) is a virtual machine aimed at running all dynamic languages.

Parrot 3.9.0 is available on Parrot's FTP site
(ftp://ftp.parrot.org/pub/parrot/releases/supported/3.9.0/), or by following the
download instructions at http://parrot.org/download. For those who would like
to develop on Parrot, or help develop Parrot itself, we recommend using Git to
retrieve the source code to get the latest and best Parrot code.

PACT - Design Notes

TL;DR: https://github.com/parrot/PACT

So after my last blog post, I started a gist to keep track of "how would I write PCT". I called it PACT, the Parrot Alternate Compiler Toolkit. I suppose I could have called it PCT2, but I really don't want to try to claim it will 100% replace PCT. PCT's very valuable to the people using it right now, but there's no small desire to add to it and I'd like to help it be better. Parrot's main audience, to my mind, is prospective compiler writers and the easier we can make their lives the better.

Parrot 3.8.0 "Magrathea" Released

On behalf of the Parrot team, I'm proud to announce Parrot 3.8.0, also known as "Magrathea". Parrot (http://parrot.org/) is a virtual machine aimed at running all dynamic languages.

Parrot 3.8.0 is available on Parrot's FTP site (ftp://ftp.parrot.org/pub/parrot/releases/devel/3.8.0/), or by following the download instructions at http://parrot.org/download. For those who would like to develop on Parrot, or help develop Parrot itself, we recommend using Git to retrieve the source code to get the latest and best Parrot code.

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GSoC: Wrapping up, and some documentation

The hard "pencils down" date was Monday, so now seems like a good time for a blog post summarizing what I ended up completing.

I have DPDA generation and parsing working for LR(0) and SLR(1) grammars. I have the beginnings of a grammar specification DSL (a grammar, but no actions or tokenizer yet; it's in the dsl branch). I do not have support for LALR(k) grammars or general LR(k) grammars. I have not implemented generating code to parse grammars (as opposed to interpreting the DPDA in order to parse them).

End of GSoC, but not Time to Stop...

I've spent the last few days cleaning up my branch: adding documentation, checking that it passes the code standard tests, and trying compiling Rakudo nom. Don't get too excited, we can't compile nom directly to bytecode. Heck, it can't compile squaak directly yet. But I wanted to make sure that all my tinkering hasn't broken the original PIR generation path.

And So Ends the Flight of the Honey Bee

Actually, I suppose the flight has really just begun. It's true that GSoC is nearly at its end but, ironically enough, it doesn't really feel like the end but more of a new beginning. A new debug data format is in the works and it has so much potential!

GSOC 12: Coming to an end

While I didn't implement everything I thought I would, there is now a basic framework for bytecode generation in the nqp_pct branch. I'm uncertain if it should be merged... While the bytecode generation doesn't fully work, it doesn't interfere with the existing usage of PCT and does have the nice feature that PAST::Compiler is now written in NQP for ease of hacking. I'll leave that up to the rest of the community to decide. The rest of this blog post is the contents of docs/pct/bytecode.pod, which I hope will be helpful if anyone want to explore what I've been working on all summer.

corellaScript : Functions and Objects

With only two days left before the hard dead line and that will the end of my first GSOC . These three months has given me a tremendous insight into the world of open source, scripting languages and off-course compilers.

The good parts

Three months ago, I was a programmer who knew how to programme in javascript and few other languages but nothing about what is going inside the compiler which drives a language but now I know what makes javascript so dynamic and powerful ,I know how code is read, converted into tokens and the formation of Syntax tree.

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