ECOOP 2020
Sun 15 - Tue 17 November 2020 Online Conference
co-located with SPLASH 2020
Sun 15 Nov 2020 12:00 - 12:20 at SPLASH-I - S-3 Chair(s): CF Bolz-Tereick, Anitha Gollamudi
Mon 16 Nov 2020 00:00 - 00:20 at SPLASH-I - S-3 Chair(s): Elisa Gonzalez Boix, Atsushi Igarashi

Polymorphism and subtyping are important features in mainstream OO languages. The most common way to integrate the two is via F<: style bounded quantification. A closely related mechanism is row polymorphism, which provides an alternative to subtyping, while still enabling many of the same applications. Yet another approach is to have type systems with intersection types and polymorphism. A recent addition to this design space are calculi with disjoint intersection types and disjoint polymorphism. With all these alternatives it is natural to wonder how they are related.

This paper provides an answer to this question. We show that disjoint polymorphism can recover forms of both row polymorphism and bounded polymorphism, while retaining key desirable properties, such as type-safety and decidability. Furthermore, we identify the extra power of disjoint polymorphism which enables additional features that cannot be easily encoded in calculi with row polymorphism or bounded quantification alone. Ultimately we expect that our work is useful to inform language designers about the expressive power of those common features, and to simplify implementations and metatheory of feature-rich languages with polymorphism and subtyping.

Sun 15 Nov

Displayed time zone: Central Time (US & Canada) change

11:00 - 12:20
S-3Research Papers at SPLASH-I +12h
Chair(s): CF Bolz-Tereick , Anitha Gollamudi Harvard University
11:00
20m
Talk
Flow-Sensitive Type-Based Heap Cloning
Research Papers
Mohamad Barbar University of Technology, Sydney, Yulei Sui University of Technology Sydney, Shiping Chen Data61 at CSIRO, Australia / UNSW, Australia
Link to publication DOI Media Attached
11:20
20m
Talk
Sound regular corecursion in coFJ
Research Papers
Davide Ancona DIBRIS, University of Genova, Italy, Pietro Barbieri Università di Genova, Francesco Dagnino DIBRIS, University of Genova, Italy, Elena Zucca University of Genova
Link to publication DOI Media Attached
11:40
20m
Talk
Value Partitioning: A Lightweight Approach to Relational Static Analysis for JavaScript
Research Papers
Benjamin Barslev Nielsen Aarhus University, Anders Møller Aarhus University
Link to publication DOI Pre-print Media Attached
12:00
20m
Talk
Row and Bounded Polymorphism via Disjoint Polymorphism
Research Papers
Ningning Xie University of Toronto, Bruno C. d. S. Oliveira University of Hong Kong, Xuan Bi The University of Hong Kong, Tom Schrijvers KU Leuven
Link to publication DOI Media Attached
23:00 - 00:20
S-3Research Papers at SPLASH-I
Chair(s): Elisa Gonzalez Boix Vrije Universiteit Brussel, Belgium, Atsushi Igarashi Kyoto University, Japan
23:00
20m
Talk
Flow-Sensitive Type-Based Heap Cloning
Research Papers
Mohamad Barbar University of Technology, Sydney, Yulei Sui University of Technology Sydney, Shiping Chen Data61 at CSIRO, Australia / UNSW, Australia
Link to publication DOI Media Attached
23:20
20m
Talk
Sound regular corecursion in coFJ
Research Papers
Davide Ancona DIBRIS, University of Genova, Italy, Pietro Barbieri Università di Genova, Francesco Dagnino DIBRIS, University of Genova, Italy, Elena Zucca University of Genova
Link to publication DOI Media Attached
23:40
20m
Talk
Value Partitioning: A Lightweight Approach to Relational Static Analysis for JavaScript
Research Papers
Benjamin Barslev Nielsen Aarhus University, Anders Møller Aarhus University
Link to publication DOI Pre-print Media Attached
00:00
20m
Talk
Row and Bounded Polymorphism via Disjoint Polymorphism
Research Papers
Ningning Xie University of Toronto, Bruno C. d. S. Oliveira University of Hong Kong, Xuan Bi The University of Hong Kong, Tom Schrijvers KU Leuven
Link to publication DOI Media Attached