Skip to Main content Skip to Navigation
Conference papers

Session types revisited

Ornela Dardha 1, 2 Elena Giachino 2, 3, 4 Davide Sangiorgi 1, 2 
Abstract : Session types are a formalism to model structured communication-based programming. A session type describes communication by specifying the type and direction of data exchanged between two parties. When session types and session primitives are added to the syntax of standard π-calculus types and terms, they give rise to additional separate syntactic categories. As a consequence, when new type features are added, there is duplication of efforts in the theory: the proofs of properties must be checked both on ordinary types and on session types. We show that session types are encodable in ordinary π types, relying on linear and variant types. Besides being an expressivity result, the encoding (i) removes the above redundancies in the syntax, and (ii) the properties of session types are derived as straightforward corollaries, exploiting the corresponding properties of ordinary π types. The robustness of the encoding is tested on a few extensions of session types, including subtyping, polymorphism and higher-order communications.
Document type :
Conference papers
Complete list of metadata
Contributor : Davide Sangiogi Connect in order to contact the contributor
Submitted on : Tuesday, November 26, 2013 - 11:08:35 AM
Last modification on : Monday, February 7, 2022 - 4:06:03 PM


  • HAL Id : hal-00909389, version 1



Ornela Dardha, Elena Giachino, Davide Sangiorgi. Session types revisited. Principles and Practice of Declarative Programming, PPDP'12, 2012, Unknown, pp.139--150. ⟨hal-00909389⟩



Record views