Hi guys we have a position for a PhD. If you are interested we can talk at ESUG 2012 or by Skype. Stef Context: Dynamically-typed languages cannot take advantage of static type information. In this context we would like to study the benefit of the introduction of static types *annotations* on library design and general robustness. The benefits can be at the level of the robustness (bug identification), but also tools (IDE) and support for assembly generation/c in case of JIT. The PhD grant is financed in the context of the Safe Python project therefore the Ph.D. will have to work in contact do we with the project partners and help in the context of some deliverables. The following tasks have to be done: - RPython is not formally defined. One of the first task will be to define the formal semantic of RPython. One approach is to write a RPython interpreter based on an operational semantics and to compare the output with the RPython interpreter. We will certainly use PLT redex which is a domain-specific language to specify and debug operational semantics. - We may use the abstract syntax tree of PyLint and use the Frama-C infrastructure. We will also consider to build a Python parser based on petitParser. - Define of some default metrics may also be necessary for the SafePython project. Their definition should be trivial on ASTs. - Analysis of the benefits of static typing for RPython. One idea is to study the existing python libraries and analyze the "distance" to the RPython subset. - Exploring type checking in presence of inconsistent type annotations. - Since we are developing Pharo and that static type annotation are important to support C or assembly generation, we would like to apply the same technique to Pharo: - define a syntax to support type annotation (reuse the one developed by Pleaid team member) - perform some analysis of existing library. References [1] D. Ancona, M. Ancona, A Cuni, and N. Matsakis. RPython: a Step Towards Reconciling Dynamically and Statically Typed OO Languages. In OOPSLA 2007 Proceedings and Companion, DLS'07: Proceedings of the 2007 Symposium on Dynamic Languages, pages 53-64. ACM, 2007. [2] A Visual Environment for Developing Context-Sensitive Term Rewriting Systems Jacob Matthews, Robert Bruce Findler, Matthew Flatt, and Matthias Felleisen [3] Felleisen,M.,Hieb,R.:The revised report on the syntactic theories of sequential control and state. (1992) 235–271 Skills and Profile You must hold a Master's in computer science, control engineering, mathematics, scientific computation or an equivalent diploma. Nationality is not taken into consideration. Knowledge in programming language design. Object-oriented programming with knowledge of Smalltalk and Python are a plus. About Lille and INRIA: Lille is located in the north of france at the border to Belgium one hour from Paris, 1h20 from London, 35 min from Brussels, by train. French food, combined with belgian beer. RMoD: http://rmod.lille.inria.fr INRIA Lille: http://www.inria.fr/lille/ INRIA in General: http://www.inria.fr Lille: http://en.wikipedia.org/wiki/Lille http://wikitravel.org/en/Lille Benefits/Users/ducasse/Workspace/FirstCircle/Administration/Ad-INRIA/Projects/2012-SafePython/PhDtopics.txt Duration : 36 months – starting date of the contract : October 2012, 15th Salary: 1957,54 EUR the first two years and 2058,84 EUR the third year Monthly salary after taxes: around 1597,11 EUR the 1st two years and 1679,76 EUR the 3rd year (social security included). Possibility of French courses Help for housing Scientific Resident card and help for husband/wife visa Additional Information Application deadline: 15 September 2012 Contact for position: stephane.ducasse@inria.fr