As JP Moresmau points in this blog entry, a new release of EclipseFP is out! It includes bug fixes and new functionality, including my work during the Summer of Code.
These past days JP has been working very hard to fix some bugs my code had, and added support for Unicode characters in Scion Browser (which means that you can browse base-unicode-symbols, for example), so I'm really grateful to him.
Apart from that, the new EclipseFP website is out and contains information about how to install this plug-in your system. If you find any bug, don't forget to tell us so we can improve EclipseFP as much as possible!
As a final note, next Monday 5 of September I'll be speaking about EclipseFP in the beautiful city of A Coruña, in Spain, during the Taller de Programación Funcional.
viernes, 2 de septiembre de 2011
lunes, 22 de agosto de 2011
End of the summer
The Summer of Code has come to its end. It has been three wonderful months, in which I've learnt and hacked a lot. I hope the improvements to EclipseFP will be used and have made it a useful tool for all the Haskell programmers out there :D
One of the tasks I've also done during the summer is building a new webpage for EclipseFP. You can find it in http://eclipsefp.github.com/. In the next days, a new release of EclipseFP with all the changes I've done though the summer will be made available.
I cannot end my summer whithout thanking my mentor, Thomas Schilling, who has been responsive and helped me a lot with the Haskell coding; and JP Moresmau, the current EclipseFP maintainer, who helped me in my first steps diving into the Eclipse Platform. I also have a debt with A O Van Emmenis and Chris Done for the discussions we had about IDEs and Haskell during the last CamHac and the pile of suggestions they gave me.
I hope you have enjoyed the show, and I'll be delighted of hearing how people used EclipseFP, and willing to implemented more features during the next months.
One of the tasks I've also done during the summer is building a new webpage for EclipseFP. You can find it in http://eclipsefp.github.com/. In the next days, a new release of EclipseFP with all the changes I've done though the summer will be made available.
I cannot end my summer whithout thanking my mentor, Thomas Schilling, who has been responsive and helped me a lot with the Haskell coding; and JP Moresmau, the current EclipseFP maintainer, who helped me in my first steps diving into the Eclipse Platform. I also have a debt with A O Van Emmenis and Chris Done for the discussions we had about IDEs and Haskell during the last CamHac and the pile of suggestions they gave me.
I hope you have enjoyed the show, and I'll be delighted of hearing how people used EclipseFP, and willing to implemented more features during the next months.
Quick Assist and new builders
This last week of GSoC has been really productive in terms of user interface additions. Apart from completion, which I showed a couple of days ago, EclipseFP now has quick assist support. Quick assist means that for some kinds of errors, a small light bulb is shown in the left side of the editor. When you click it, ways to correct the error are suggested, and if you click on it, automatically applied.
Most of these fixes were already implemented by JP Moresmau, like adding a package to the Cabal file, removing redundant imports or adding a Language pragma to the file. My work in those has been to make them more discoverable and available through the light bulb icon. Apart from those, you will get the ability to add an import for a function that is not found (it even works if you qualify the item, making the new import qualified).
The rest of the work I want to present today was done between CamHac and the end of the last week. I've always felt that Haskell programming was not only writing Haskell code, but also writing code in tools like Alex, Happy or the UU Attribute Grammar system. Those tools allow you to express some constructions better and more concisely, and I thought that it would be nice to have them in EclipseFP.
So now you have syntax higlighting and automatic building of those files.
Last year I was studying at Utrecht University and really liked their Attribute Grammar System. The tool has a lot of options, and now you can configure them inside EclipseFP. Even more, the configuration is saved in the same format that the one used in uuagc-cabal package.
This has been all for the summer. A new EclipseFP release with all the features should be available very soon :D
Most of these fixes were already implemented by JP Moresmau, like adding a package to the Cabal file, removing redundant imports or adding a Language pragma to the file. My work in those has been to make them more discoverable and available through the light bulb icon. Apart from those, you will get the ability to add an import for a function that is not found (it even works if you qualify the item, making the new import qualified).
The rest of the work I want to present today was done between CamHac and the end of the last week. I've always felt that Haskell programming was not only writing Haskell code, but also writing code in tools like Alex, Happy or the UU Attribute Grammar system. Those tools allow you to express some constructions better and more concisely, and I thought that it would be nice to have them in EclipseFP.
So now you have syntax higlighting and automatic building of those files.
Last year I was studying at Utrecht University and really liked their Attribute Grammar System. The tool has a lot of options, and now you can configure them inside EclipseFP. Even more, the configuration is saved in the same format that the one used in uuagc-cabal package.
This has been all for the summer. A new EclipseFP release with all the features should be available very soon :D
miércoles, 17 de agosto de 2011
Autocompletion and more
In the past week I've continued adding features to EclipseFP. For example, now you can edit Alex, Happy or UUAGC files directly in EclipseFP, and you will get syntax highlighting (taking into accounts which zones are Haskell code and which others are non-Haskell). Last weekend I've attend CamHac. That was a wonderful experience to know new people, and also to collect suggestions and improvements for the plug-in. Two of those suggestions have already been implemented.
The first one is a tighter integration with some of the web frameworks available in Haskell-land. In particular, you can create Snap and Yesod projects directly from the New Project wizard in Eclipse, provided the neccessary tools are installed. Also, I've linked some content-types to existing web editors, so you will get HTML editor for a Heist template, CSS editor for a Lucius template and so on.
The other feature that most of the people requested was autocompletion. I didn't implement that before because my knowledge of both Eclipse and Scion was lower, and didn't really know where to start. But after these 3 months I've been able to come to a solution to the problem, and I'm delighted to present the new revamped Haskell code assist for EclipseFP:
The first one is a tighter integration with some of the web frameworks available in Haskell-land. In particular, you can create Snap and Yesod projects directly from the New Project wizard in Eclipse, provided the neccessary tools are installed. Also, I've linked some content-types to existing web editors, so you will get HTML editor for a Heist template, CSS editor for a Lucius template and so on.
The other feature that most of the people requested was autocompletion. I didn't implement that before because my knowledge of both Eclipse and Scion was lower, and didn't really know where to start. But after these 3 months I've been able to come to a solution to the problem, and I'm delighted to present the new revamped Haskell code assist for EclipseFP:
In the following days I plan to implement more of the suggestions in my TODO list :D
martes, 9 de agosto de 2011
EclipseFP build error on Ubuntu Oneiric
UPDATE: the bug has been solved in Oneiric, so this PPA is no longer needed. I leave this here only for reference.
If you try to install EclipseFP on a Ubuntu Oneiric (the next release which will have the number 11.10) you may get the following error when scion-browser is built:
This is due to GHC 7.0.3 being packed in Debian with a stripped libHSghc. I don't know well what that means, but makes impossible to use have ghc as a dependency while using Template Haskell (something scion-browser does). In Debian unstable this has been fixed upgrading to a new GHC version, but in Ubuntu it seems that we will have to wait until the bug is fixed.
In the meanwhile, I've created a PPA archive with the GHC version in Debian (7.0.4-4) and rebuilt the haskell-platform package and its dependencies. This means that you can get a working Haskell Platform with a working version of GHC following the instructions about installing.
The downside is that the PPA only contains the core Haskell packages and the rest of libghc-* packages in Ubuntu are not compatible with these version. So you will have to use cabal install to get any other package in a system using the PPA, even if the library has been packaged in Ubuntu.
ghc: panic! (the 'impossible' happened)
(GHC version 7.0.3 for x86_64-unknown-linux):
loadArchive "/usr/lib/ghc-7.0.3/ghc-7.0.3/libHSghc-7.0.3.a": failed
sábado, 23 de julio de 2011
SourceGraph on EclipseFP
Eclipse really makes some tasks very very easy. One of them is running a command through a popup menu. So, while I was looking at the list of development tools in the Haskell wiki, I read about SourceGraph, and decided to integrate it into EclipseFP. The idea was easy: to run SourceGraph on the corresponding Cabal file and show the output in the internal browser. Voilà!
Three new features
I haven't written here for almost a month. But that doesn't mean that I hadn't been busy implementing new features for EclipseFP. Today I would like to share them with you.
The first one comprises some refactoring helpers. Now, when in the Eclipse interface you rename or move some file, the program knows that it should change the module name, the references in other modules and the Cabal file if it is referenced. This makes much easier to change the module hierarchy.
The first one comprises some refactoring helpers. Now, when in the Eclipse interface you rename or move some file, the program knows that it should change the module name, the references in other modules and the Cabal file if it is referenced. This makes much easier to change the module hierarchy.
The second one is the ability to run unit tests directly from the interface. Because of the changes the Cabal interface for test-suites is being into, only a way to run tests is allowed: you should use test-framework to build them. That was the most complete interface I found, and it provides detailed reports in JUnit-style, that can later be shown in the development environment. So, just specify your tests in the Cabal file, right-click in your project root, select Run As... and then Test-framework test.
The last (but not least) feature I implemented this month has been profiling integration. As easy as you run your executables, you can run them in profile mode (note: this needs -rtsopts to be added to the GHC options in the Cabal file and just runs the executable with +RTS -hT). When the process has finished, the .hp file is saved in your project ans shown graphically, as with hp2ps or hp2pretty, but with the ability to control interactively the degree of grouping.
That's all for today! In the last weeks of the Google Summer of Code I would like to show coverage output from HPC and add some primitive handling of imports in Haskell source files.
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