Programming Languages

Jonathan Immanuel Brachthäuser, M.Sc.

Photo of Jonathan Brachthäuser

Jonathan Brachthäuser
Universität Tübingen
WSI - Programmiersprachen
Sand 13
72076 Tübingen
Germany

Telephone
+49 - (0) 70 71 - 29 - 75 491
Telefax
+49 - (0) 70 71 - 29 - 50 82
E-Mail
jonathan.brachthaeuser(at)uni-tuebingen.de
Office
B213
Office hours
by appointment (see calendar)

Publications on Google Scholar

Research Projects

Algebraic Effect Handlers

Algebra Composition

Publications

Effekt: Type- and Effect-safe, Extensible Effect Handlers in Scala

by Jonathan Immanuel Brachthäuser, Philipp Schuster, and Klaus Ostermann

Unpublished. Under consideration for publication in Journal of Functional Programming, 2019.

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Programming with Implicit Values, Functions, and Control

by Jonathan Immanuel Brachthäuser and Daan Leijen

Technical report MSR-TR-2019-7. Microsoft Research, 2019.

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Effect Handlers for the Masses

by Jonathan Brachthäuser, Philipp Schuster, and Klaus Ostermann

In Proc. Int’l Conf. Object-Oriented Programming, Systems, Languages and Applications (OOPSLA). ACM Press, 2018.

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Typing, Representing, and Abstracting Control: Functional Pearl

by Philipp Schuster and Jonathan Brachthäuser

In Proceedings of the International Workshop on Type-Driven Development. ACM Press, 2018.

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Towards Naturalistic EDSLs using Algebraic Effects

by Jonathan Immanuel Brachthäuser

In Workshop for Domain Specific Languages, Design and Implementation (DSLDI), 2017.

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Effekt: Extensible Algebraic Effects in Scala (Short Paper)

by Jonathan Immanuel Brachthäuser and Philipp Schuster

In Proceedings of the International Symposium on Scala. ACM Press, 2017.

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Parsing with First-Class Derivatives

by Jonathan Brachthäuser, Tillmann Rendel, and Klaus Ostermann

In Proc. Int’l Conf. Object-Oriented Programming, Systems, Languages and Applications (OOPSLA). ACM Press, 2016.

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Modularization of Algorithms on Complex Data Structures: An Encoding of Typesafe Extensible Functional Objects

by Jonathan Immanuel Brachthäuser

Master thesis. University of Marburg, Germany, 2014.

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From Object Algebras to Attribute Grammars

by Tillmann Rendel, Jonathan Brachthäuser, and Klaus Ostermann

In Proceedings of the 2014 ACM International Conference on Object Oriented Programming Systems Languages & Applications (OOPSLA), pages 377–395. ACM Press, 2014.

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Assigned Thesis Topics

Implementing the language server protocol for Koka

The Language Server Protocol (LSP) defines a protocol used between an editor or IDE and a language server that provides language features like auto complete, go to definition, find all references etc. The Language Server Protocol has to be implemented once for every programming language and once for every editor, instead of once for every combination of programming language and editor, thus reducing a m x n problem to a m + n problem.

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Finished Thesis Topics

Second-Class Values for Safer Effect Handlers

Effect handlers as generalizations of exception handlers offer interesting new ways to modularize software. Scala Effekt is an implementation of effect handlers, based on capability passing. Instead of searching for the correct handler in runtime, the handler is passed down to where the effect is used. This allows convenient implementations in languages like Scala and Java and comes with performance improvements. Scala 3 introduced the new feature of implicit function types, greatly reducing the burden of explicit capability passing. However, capabilities can leak and leave the scope of the defining handler leading to runtime errors.

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Parsing Markdown with First-Class Derivatives

Markdown is a lightweight and widespread way of structuring plain text documents. The layout rules that are used to structure the text make Markdown at the same time easy to read for humans but also difficult to write a grammar or a parser.

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CodeProse: Leveraging Editor Services for Literate Programming

Literate programming blends the borders between source code and documentation. The goal of existing tools like Docco and Scribble is to create a uniform reading experience for documentation and code.

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News

Invited Lecture on Effect Handlers

Jonathan Brachthäuser
ResearcherJonathan Brachthäuser is invited to give a guest lecture at the Modern Programming Languages seminar, organized by the Cusanuswerk sponsorship organization.

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Presentation at OOPSLA 2018

Jonathan Brachthäuser
ResearcherJonathan Immanuel Brachthäuser presents the paper Effect Handlers for the Masses at the International Conference on Object-Oriented Programming, Systems, Languages and Applications (OOPSLA) in Boston, MA, USA.

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Presentation at Type-Driven Development 2018

Philipp Schuster
ResearcherPhilipp Schuster presents the functional pearl Typing, Representing, and Abstracting Control at Type-Driven Development 2018.

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Dagstuhl Seminar on Domain-Specific Languages

Jonathan Brachthäuser
ResearcherJonathan Immanuel Brachthäuser attends the Dagstuhl-Seminar on “Algebraic Effect Handlers go Mainstream” from April 22 to 27, 2018.

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Presentation at the Scala Symposium 2017

Jonathan Brachthäuser
ResearcherJonathan Immanuel Brachthäuser presents the paper Effekt: Extensible Algebraic Effects in Scala at the Scala Symposium 2017.

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Presentation at DSLDI 2017

Jonathan Brachthäuser
ResearcherJonathan Immanuel Brachthäuser talks about Towards Naturalistic EDSLs using Algebraic Effects at the Workshop for Domain Specific Languages, Design and Implementation (DSLDI) 2017.

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Anmeldefrist für die Software Engineering Summerschool von NovaTec

Die NovaTec GmbH, ein Kooperationspartner im Tübinger Softwareprojekt, veranstaltet dieses Jahr 3 verschiedene „Summer Schools“. Alle TeilnehmerInnen der Software Engineering Vorlesung und natürlich auch andere Interessierte sind herzlich dazu eingeladen.

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Guest Lecture by Philipp Gerhard (iPoint-systems gmbh)

Philipp Gerhard, Software Developer at iPoint-systems gmbh will give an invited guest lecture in Software Engineering and talk about Test Driven Development and Continuous Integration.

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Guest Lecture by Heiko Hütter (DAASI International)

Heiko Hütter, Project Manager and Scrum expert at DAASI International will talk about Challenges and best practices in multi-project and multi-product setups using Scrum.

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Guest Lecture by Amra Avdic (Novatec GmbH)

Amra Avdic, Senior Consultant at Novatec GmbH, will talk about Requirements Engineering and agile Methods.

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Industry project fair

Students present their finished projects and our industry partners present project proposals for the next iteration of “Das Tübinger Softwareprojekt”, an industry-acedemia collaboration with the goal of letting students experience a real software project as a programmer during their undergraduate studys, or as a team leader during their graduate studies.

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Scala 2017 -- Call for Contributions

The Call for Contributions for the Eighth Symposium on Scala, co-organized by members of our research group (Paolo Giarrusso
AlumniPaolo G. Giarrusso and Jonathan Brachthäuser
ResearcherJonathan Immanuel Brachthäuser), is now available.

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Dubai 100

Our TSP Team “Rehality” was granted to join “Dubai 100”. Starting on 13th of January 2017 they will participate in a intensive 100-day programme designed to accelerate the growth of early-stage startups. Only 10 Teams where given this great opportunity.

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Presentation at OOPSLA conference

Jonathan Brachthäuser
ResearcherJonathan Immanuel Brachthäuser presents the paper Parsing with First-Class Derivatives at the International Conference on Object-oriented Programming, Systems, Languages, and Applications in Amsterdam, The Netherlands. The paper is joint work with Tillmann Rendel
AlumniTillmann Rendel and Klaus Ostermann
HeadKlaus Ostermann.

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Paper accepted at OOPSLA

Our paper “Parsing with First-Class Derivatives” (Jonathan Brachthäuser
ResearcherJonathan Immanuel Brachthäuser, Tillmann Rendel
AlumniTillmann Rendel and Klaus Ostermann
HeadKlaus Ostermann ) has been accepted for presentation at the annual conference of Object-oriented Programming, Systems, Languages, and Applications (OOPSLA).

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Git Workshop for Industry Project Participants

The participants of the 2016 edition of the industry project „Das Tübinger Softwareprojekt“ get brought up to speed with git usage and social coding practices in a half-day workshop at Tübingen University.

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SCRUM Workshop for Industry Project Participants

Students participtaing in “Das Tübinger Softwareproject” meet at a one-day workshop to learn about project management and team organisation with Scrum.

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Team Leadership Workshop for Industry Project Participants

Graduate students participating in “Das Tübinger Softwareproject” meet at a one-day workshop to learn about team leadership skills and their role during the year-long industry-academia collaboration with the goal of letting students experience a realistic software engineering project during their studies.

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Industry project fair

Students present their finished projects and our industry partners present project proposals for the next iteration of “Das Tübinger Softwareprojekt”, an industry-acedemia collaboration with the goal of letting students experience a real software project as a programmer during their undergraduate studys, or as a team leader during their graduate studies.

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Software Engineering Project Fair @ PS

Meet us for the software engineering project fair, in which our industry partners present their proposal for this year’s software project offers.

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Invited talk at Stuttgart Media University

Jonathan Brachthäuser
ResearcherJonathan Brachthäuser gives a talk at Language Day 2015 hosted by the Stuttgart Media University.

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BSc. Defense by Tobias Weber and Mini-Workshop on Uroboro

Tobias Weber from the University of Marburg visits Tübingen to defend his BSc. thesis entitled “An Implementation of a Language with Pattern and Copattern Matching”. On the occasion of his visit, we organize a little workshop about application of the language “Uroboro” that Tobias implemented.

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Jonathan Brachthäuser Hired

Jonathan Brachthäuser
ResearcherJonathan Immanuel Brachthäuser joins the group as researcher and PhD student.

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