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.

app-parrot-create weekly report

I'm working according to the schedule

At this week, I've done a web-part of my project. It's consist of
to create a one-pages site using a bootstrap/jquery and to integrate it with Mojolicious framework.

I've done the issue that was a part of this task.

I start to create a project templates. It will base on perl template toolkit
In next week I will plan
- api for work with this type of template file


The Parrot Foundation is accepted for GSOC 2013

dukeleto: Happy to announce that @parrotvm will be mentoring students in #gsoc again this year! If you know awesome CS students, send them to me :)

We need mentors to sign up at
and project ideas to be collected/edited/reviewed at the "Ideas page".

Parrot threads on the perl6 advent calendar - Day 11

Parrot threads were featured on the perl advent calendar, day 11. Something cool about Perl 6 every day, in December.



Parrot string encodings on the perl6 advent calendar - Day 7

Debugging parrot strings were featured on the perl6 advent calendar, day 7. Something cool about Perl 6 every day, in December.


Shows how to debug into crazy string encoding problems, when you are not sure if the core implementation, the library, the spec or the tests are wrong. It turned out, that the library and the tests were wrong.



Tomorrow is google's appointed 'firm pencils down' date. That seems like a good time to discuss the results of my work on mod_parrot so far.

mod_parrot is, as I have mentioned before, a two-layered system, with one half interfacing with apache (the module) and the other half with the interpreter and the compilers, the 'loader'. There is also a vital third component, the test system called pudding.

A new hope

This week I finally got arround to giving a new, fresh structure to the mod_parrot module code. I have complained, perhaps not loudly enough, about the various inadequacies of the old codebase, mostly with regards to extensibility. A cleanup was needed. As such, here is a walkthrough of the new structure, also serving as documentation.

Interpreters with butterfly wings

I for one am totally for whimsical blog titles, wouldn't you agree? In other news, after a lull of two weeks (codewise at least) I've finally started to work on mod_parrot again. The big (dis)?advantage from not working on code is that you start to think more of what you could do (and should have done), rather than what you have done.

As it turns out, I handle interpreters in a rather confused manner. My goal for the next two weeks is to fix that. First, let me describe what should be done to correctly run a script on an interpreter using mod_parrot:

PACT: Adjusting the schedule

I appear to be continuing my weekly blogging every 14 days. Ah, well. My progress has been fairly intermittent as I work out this whole "getting sleep with a newborn around", but I'm starting to make real progress again. Today's blog will discuss what I've done in the last couple weeks and an updated schedule for the next month.

My progress can be split into a few topics: syntax highlighting, style changes, bug fixes, test helpers, and tests themselves.

As long as hope remains

So, this was rather an unproductive week, unfortunately. I'm completely busy with moving right now (and will be coming week). What did happen is that I poked a hole into parrot, and the community (nine) fixed it. The story: I started my 'loader' script by directly invoking a subroutine. That by-passed the starting of a green thread on the interpreter, which caused a crash when I tried to do something with that thread, such as sleeping. Nine fixed this issue by starting a green thread upon invocation using the api, which causes my tests to crash no more.

PACT: Spinning of the Wheels

So my 'vacation' was a visit to the hospital for the birth of my son. Now that this has happened, my schedule is going to be even more fun. Was in the hospital for most of a week and am now adjusting to life back home. I've been slowly turning my disassembler program into a "library" of sorts so I can call it repeatedly from tests.

Now to write some tests that convert PIR to Packfiles and Packfiles to PACT.Packfiles...

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