5 Search Results for "Giannini, Paola"

Document
DOI: 10.4230/LIPIcs.ECOOP.2023.3
Multi-Graded Featherweight Java

Authors: Riccardo Bianchini, Francesco Dagnino, Paola Giannini, and Elena Zucca

Published in: LIPIcs, Volume 263, 37th European Conference on Object-Oriented Programming (ECOOP 2023)

Abstract
Resource-aware type systems statically approximate not only the expected result type of a program, but also the way external resources are used, e.g., how many times the value of a variable is needed. We extend the type system of Featherweight Java to be resource-aware, parametrically on an arbitrary grade algebra modeling a specific usage of resources. We prove that this type system is sound with respect to a resource-aware version of reduction, that is, a well-typed program has a reduction sequence which does not get stuck due to resource consumption. Moreover, we show that the available grades can be heterogeneous, that is, obtained by combining grades of different kinds, via a minimal collection of homomorphisms from one kind to another. Finally, we show how grade algebras and homomorphisms can be specified as Java classes, so that grade annotations in types can be written in the language itself.
Cite as

Riccardo Bianchini, Francesco Dagnino, Paola Giannini, and Elena Zucca. Multi-Graded Featherweight Java. In 37th European Conference on Object-Oriented Programming (ECOOP 2023). Leibniz International Proceedings in Informatics (LIPIcs), Volume 263, pp. 3:1-3:27, Schloss Dagstuhl – Leibniz-Zentrum für Informatik (2023)

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@InProceedings{bianchini_et_al:LIPIcs.ECOOP.2023.3,
  author =	{Bianchini, Riccardo and Dagnino, Francesco and Giannini, Paola and Zucca, Elena},
  title =	{{Multi-Graded Featherweight Java}},
  booktitle =	{37th European Conference on Object-Oriented Programming (ECOOP 2023)},
  pages =	{3:1--3:27},
  series =	{Leibniz International Proceedings in Informatics (LIPIcs)},
  ISBN =	{978-3-95977-281-5},
  ISSN =	{1868-8969},
  year =	{2023},
  volume =	{263},
  editor =	{Ali, Karim and Salvaneschi, Guido},
  publisher =	{Schloss Dagstuhl -- Leibniz-Zentrum f{\"u}r Informatik},
  address =	{Dagstuhl, Germany},
  URL =		{https://drops-dev.dagstuhl.de/entities/document/10.4230/LIPIcs.ECOOP.2023.3},
  URN =		{urn:nbn:de:0030-drops-181960},
  doi =		{10.4230/LIPIcs.ECOOP.2023.3},
  annote =	{Keywords: Graded modal types, Java}
}
Document
DOI: 10.4230/OASIcs.Gabbrielli.3
Deconfined Intersection Types in Java

Authors: Mariangiola Dezani-Ciancaglini, Paola Giannini, and Betti Venneri

Published in: OASIcs, Volume 86, Recent Developments in the Design and Implementation of Programming Languages (2020)

Abstract
We show how Java intersection types can be freed from their confinement in type casts, in such a way that the proposed Java extension is safe and fully compatible with the current language. To this aim, we exploit two calculi which formalise the simple Java core and the extended language, respectively. Namely, the second calculus extends the first one by allowing an intersection type to be used anywhere in place of a nominal type. We define a translation algorithm, compiling programs of the extended language into programs of the former calculus. The key point is the interaction between λ-expressions and intersection types, that adds safe expressiveness while being the crucial matter in the translation. We prove that the translation preserves typing and semantics. Thus, typed programs in the proposed extension are translated to typed Java programs. Moreover, semantics of translated programs coincides with the one of the source programs.
Cite as

Mariangiola Dezani-Ciancaglini, Paola Giannini, and Betti Venneri. Deconfined Intersection Types in Java. In Recent Developments in the Design and Implementation of Programming Languages. Open Access Series in Informatics (OASIcs), Volume 86, pp. 3:1-3:25, Schloss Dagstuhl – Leibniz-Zentrum für Informatik (2020)

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@InProceedings{dezaniciancaglini_et_al:OASIcs.Gabbrielli.3,
  author =	{Dezani-Ciancaglini, Mariangiola and Giannini, Paola and Venneri, Betti},
  title =	{{Deconfined Intersection Types in Java}},
  booktitle =	{Recent Developments in the Design and Implementation of Programming Languages},
  pages =	{3:1--3:25},
  series =	{Open Access Series in Informatics (OASIcs)},
  ISBN =	{978-3-95977-171-9},
  ISSN =	{2190-6807},
  year =	{2020},
  volume =	{86},
  editor =	{de Boer, Frank S. and Mauro, Jacopo},
  publisher =	{Schloss Dagstuhl -- Leibniz-Zentrum f{\"u}r Informatik},
  address =	{Dagstuhl, Germany},
  URL =		{https://drops-dev.dagstuhl.de/entities/document/10.4230/OASIcs.Gabbrielli.3},
  URN =		{urn:nbn:de:0030-drops-132256},
  doi =		{10.4230/OASIcs.Gabbrielli.3},
  annote =	{Keywords: Intersection Types, Featherweight Java, Lambda Expressions}
}
Document
DOI: 10.4230/LIPIcs.CONCUR.2020.12
Session Subtyping and Multiparty Compatibility Using Circular Sequents

Authors: Ross Horne

Published in: LIPIcs, Volume 171, 31st International Conference on Concurrency Theory (CONCUR 2020)

Abstract
We present a structural proof theory for multi-party sessions, exploiting the expressive power of non-commutative logic which can capture explicitly the message sequence order in sessions. The approach in this work uses a more flexible form of subtyping than standard, for example, allowing a single thread to be substituted by multiple parallel threads which fulfil the role of the single thread. The resulting subtype system has the advantage that it can be used to capture compatibility in the multiparty setting (addressing limitations of pairwise duality). We establish standard results: that the type system is algorithmic, that multiparty compatible processes which are race free are also deadlock free, and that subtyping is sound with respect to the substitution principle. Interestingly, each of these results can be established using cut elimination. We remark that global types are optional in this approach to typing sessions; indeed we show that this theory can be presented independently of the concept of global session types, or even named participants.
Cite as

Ross Horne. Session Subtyping and Multiparty Compatibility Using Circular Sequents. In 31st International Conference on Concurrency Theory (CONCUR 2020). Leibniz International Proceedings in Informatics (LIPIcs), Volume 171, pp. 12:1-12:22, Schloss Dagstuhl – Leibniz-Zentrum für Informatik (2020)

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@InProceedings{horne:LIPIcs.CONCUR.2020.12,
  author =	{Horne, Ross},
  title =	{{Session Subtyping and Multiparty Compatibility Using Circular Sequents}},
  booktitle =	{31st International Conference on Concurrency Theory (CONCUR 2020)},
  pages =	{12:1--12:22},
  series =	{Leibniz International Proceedings in Informatics (LIPIcs)},
  ISBN =	{978-3-95977-160-3},
  ISSN =	{1868-8969},
  year =	{2020},
  volume =	{171},
  editor =	{Konnov, Igor and Kov\'{a}cs, Laura},
  publisher =	{Schloss Dagstuhl -- Leibniz-Zentrum f{\"u}r Informatik},
  address =	{Dagstuhl, Germany},
  URL =		{https://drops-dev.dagstuhl.de/entities/document/10.4230/LIPIcs.CONCUR.2020.12},
  URN =		{urn:nbn:de:0030-drops-128245},
  doi =		{10.4230/LIPIcs.CONCUR.2020.12},
  annote =	{Keywords: session types, subtyping, compatibility, linear logic, deadlock freedom}
}
Document
DOI: 10.4230/LIPIcs.TYPES.2015.4
Constrained Polymorphic Types for a Calculus with Name Variables

Authors: Davide Ancona, Paola Giannini, and Elena Zucca

Published in: LIPIcs, Volume 69, 21st International Conference on Types for Proofs and Programs (TYPES 2015) (2018)

Abstract
We extend the simply-typed lambda-calculus with a mechanism for dynamic rebinding of code based on parametric nominal interfaces. That is, we introduce values which represent single fragments, or families of named fragments, of open code, where free variables are associated with names which do not obey \alpha-equivalence. In this way, code fragments can be passed as function arguments and manipulated, through their nominal interface, by operators such as rebinding, overriding and renaming. Moreover, by using name variables, it is possible to write terms which are parametric in their nominal interface and/or in the way it is adapted, greatly enhancing expressivity. However, in order to prevent conflicts when instantiating name variables, the name-polymorphic types of such terms need to be equipped with simple {inequality} constraints. We show soundness of the type system.
Cite as

Davide Ancona, Paola Giannini, and Elena Zucca. Constrained Polymorphic Types for a Calculus with Name Variables. In 21st International Conference on Types for Proofs and Programs (TYPES 2015). Leibniz International Proceedings in Informatics (LIPIcs), Volume 69, pp. 4:1-4:29, Schloss Dagstuhl – Leibniz-Zentrum für Informatik (2018)

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@InProceedings{ancona_et_al:LIPIcs.TYPES.2015.4,
  author =	{Ancona, Davide and Giannini, Paola and Zucca, Elena},
  title =	{{Constrained Polymorphic Types for a Calculus with Name Variables}},
  booktitle =	{21st International Conference on Types for Proofs and Programs (TYPES 2015)},
  pages =	{4:1--4:29},
  series =	{Leibniz International Proceedings in Informatics (LIPIcs)},
  ISBN =	{978-3-95977-030-9},
  ISSN =	{1868-8969},
  year =	{2018},
  volume =	{69},
  editor =	{Uustalu, Tarmo},
  publisher =	{Schloss Dagstuhl -- Leibniz-Zentrum f{\"u}r Informatik},
  address =	{Dagstuhl, Germany},
  URL =		{https://drops-dev.dagstuhl.de/entities/document/10.4230/LIPIcs.TYPES.2015.4},
  URN =		{urn:nbn:de:0030-drops-84744},
  doi =		{10.4230/LIPIcs.TYPES.2015.4},
  annote =	{Keywords: open code, incremental rebinding, name polymorphism, metaprogramming}
}
Document
DOI: 10.4230/LIPIcs.CONCUR.2017.30
Concurrent Reversible Sessions

Authors: Ilaria Castellani, Mariangiola Dezani-Ciancaglini, and Paola Giannini

Published in: LIPIcs, Volume 85, 28th International Conference on Concurrency Theory (CONCUR 2017)

Abstract
We present a calculus for concurrent reversible multiparty sessions, which improves on recent proposals in several respects: it allows for concurrent and sequential composition within processes and types, it gives a compact representation of the past of processes and types, which facilitates the definition of rollback, and it implements a fine-tuned strategy for backward computation. We propose a refined session type system for our calculus and show that it enforces the expected properties of session fidelity, forward and backward progress, as well as causal consistency. In conclusion, our calculus is a conservative extension of previous proposals, offering enhanced expressive power and refined analysis techniques.
Cite as

Ilaria Castellani, Mariangiola Dezani-Ciancaglini, and Paola Giannini. Concurrent Reversible Sessions. In 28th International Conference on Concurrency Theory (CONCUR 2017). Leibniz International Proceedings in Informatics (LIPIcs), Volume 85, pp. 30:1-30:17, Schloss Dagstuhl – Leibniz-Zentrum für Informatik (2017)

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@InProceedings{castellani_et_al:LIPIcs.CONCUR.2017.30,
  author =	{Castellani, Ilaria and Dezani-Ciancaglini, Mariangiola and Giannini, Paola},
  title =	{{Concurrent Reversible Sessions}},
  booktitle =	{28th International Conference on Concurrency Theory (CONCUR 2017)},
  pages =	{30:1--30:17},
  series =	{Leibniz International Proceedings in Informatics (LIPIcs)},
  ISBN =	{978-3-95977-048-4},
  ISSN =	{1868-8969},
  year =	{2017},
  volume =	{85},
  editor =	{Meyer, Roland and Nestmann, Uwe},
  publisher =	{Schloss Dagstuhl -- Leibniz-Zentrum f{\"u}r Informatik},
  address =	{Dagstuhl, Germany},
  URL =		{https://drops-dev.dagstuhl.de/entities/document/10.4230/LIPIcs.CONCUR.2017.30},
  URN =		{urn:nbn:de:0030-drops-77877},
  doi =		{10.4230/LIPIcs.CONCUR.2017.30},
  annote =	{Keywords: Communication-centric Systems, Reversible Computation, Process Calculi, Multiparty Session Types}
}
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