Search Results

Documents authored by Bach Poulsen, Casper

Document
DOI: 10.4230/OASIcs.EVCS.2023.2
Renamingless Capture-Avoiding Substitution for Definitional Interpreters

Authors: Casper Bach Poulsen

Published in: OASIcs, Volume 109, Eelco Visser Commemorative Symposium (EVCS 2023)

Abstract
Substitution is a common and popular approach to implementing name binding in definitional interpreters. A common pitfall of implementing substitution functions is variable capture. The traditional approach to avoiding variable capture is to rename variables. However, traditional renaming makes for an inefficient interpretation strategy. Furthermore, for applications where partially-interpreted terms are user facing it can be confusing if names in uninterpreted parts of the program have been changed. In this paper we explore two techniques for implementing capture avoiding substitution in definitional interpreters to avoid renaming.
Cite as

Casper Bach Poulsen. Renamingless Capture-Avoiding Substitution for Definitional Interpreters. In Eelco Visser Commemorative Symposium (EVCS 2023). Open Access Series in Informatics (OASIcs), Volume 109, pp. 2:1-2:10, Schloss Dagstuhl – Leibniz-Zentrum für Informatik (2023)

Copy BibTex To Clipboard

@InProceedings{bachpoulsen:OASIcs.EVCS.2023.2,
  author =	{Bach Poulsen, Casper},
  title =	{{Renamingless Capture-Avoiding Substitution for Definitional Interpreters}},
  booktitle =	{Eelco Visser Commemorative Symposium (EVCS 2023)},
  pages =	{2:1--2:10},
  series =	{Open Access Series in Informatics (OASIcs)},
  ISBN =	{978-3-95977-267-9},
  ISSN =	{2190-6807},
  year =	{2023},
  volume =	{109},
  editor =	{L\"{a}mmel, Ralf and Mosses, Peter D. and Steimann, Friedrich},
  publisher =	{Schloss Dagstuhl -- Leibniz-Zentrum f{\"u}r Informatik},
  address =	{Dagstuhl, Germany},
  URL =		{https://drops-dev.dagstuhl.de/entities/document/10.4230/OASIcs.EVCS.2023.2},
  URN =		{urn:nbn:de:0030-drops-177728},
  doi =		{10.4230/OASIcs.EVCS.2023.2},
  annote =	{Keywords: Capture-avoiding substitution, lambda calculus, definitional interpreter}
}
Document
DOI: 10.4230/LIPIcs.ECOOP.2016.20
Scopes Describe Frames: A Uniform Model for Memory Layout in Dynamic Semantics

Authors: Casper Bach Poulsen, Pierre Néron, Andrew Tolmach, and Eelco Visser

Published in: LIPIcs, Volume 56, 30th European Conference on Object-Oriented Programming (ECOOP 2016)

Abstract
Semantic specifications do not make a systematic connection between the names and scopes in the static structure of a program and memory layout, and access during its execution. In this paper, we introduce a systematic approach to the alignment of names in static semantics and memory in dynamic semantics, building on the scope graph framework for name resolution. We develop a uniform memory model consisting of frames that instantiate the scopes in the scope graph of a program. This provides a language-independent correspondence between static scopes and run-time memory layout, and between static resolution paths and run-time memory access paths. The approach scales to a range of binding features, supports straightforward type soundness proofs, and provides the basis for a language-independent specification of sound reachability-based garbage collection.
Cite as

Casper Bach Poulsen, Pierre Néron, Andrew Tolmach, and Eelco Visser. Scopes Describe Frames: A Uniform Model for Memory Layout in Dynamic Semantics. In 30th European Conference on Object-Oriented Programming (ECOOP 2016). Leibniz International Proceedings in Informatics (LIPIcs), Volume 56, pp. 20:1-20:26, Schloss Dagstuhl – Leibniz-Zentrum für Informatik (2016)

Copy BibTex To Clipboard

@InProceedings{bachpoulsen_et_al:LIPIcs.ECOOP.2016.20,
  author =	{Bach Poulsen, Casper and N\'{e}ron, Pierre and Tolmach, Andrew and Visser, Eelco},
  title =	{{Scopes Describe Frames: A Uniform Model for Memory Layout in Dynamic Semantics}},
  booktitle =	{30th European Conference on Object-Oriented Programming (ECOOP 2016)},
  pages =	{20:1--20:26},
  series =	{Leibniz International Proceedings in Informatics (LIPIcs)},
  ISBN =	{978-3-95977-014-9},
  ISSN =	{1868-8969},
  year =	{2016},
  volume =	{56},
  editor =	{Krishnamurthi, Shriram and Lerner, Benjamin S.},
  publisher =	{Schloss Dagstuhl -- Leibniz-Zentrum f{\"u}r Informatik},
  address =	{Dagstuhl, Germany},
  URL =		{https://drops-dev.dagstuhl.de/entities/document/10.4230/LIPIcs.ECOOP.2016.20},
  URN =		{urn:nbn:de:0030-drops-61140},
  doi =		{10.4230/LIPIcs.ECOOP.2016.20},
  annote =	{Keywords: Dynamic semantics, scope graphs, memory layout, type soundness, operational semantics}
}
Document
DOI: 10.4230/DARTS.2.1.10
Scopes Describe Frames: A Uniform Model for Memory Layout in Dynamic Semantics (Artifact)

Authors: Casper Bach Poulsen, Pierre Néron, Andrew Tolmach, and Eelco Visser

Published in: DARTS, Volume 2, Issue 1, Special Issue of the 30th European Conference on Object-Oriented Programming (ECOOP 2016)

Abstract
Our paper introduces a systematic approach to the alignment of names in the static structure of a program, and memory layout and access during its execution. We develop a uniform memory model consisting of frames that instantiate the scopes in the scope graph of a program. This provides a language-independent correspondence between static scopes and run-time memory layout, and between static resolution paths and run-time memory access paths. The approach scales to a range of binding features, supports straightforward type soundness proofs, and provides the basis for a language-independent specification of sound reachability-based garbage collection. This Coq artifact showcases how our uniform model for memory layout in dynamic semantics provides structure to type soundness proofs. The artifact contains type soundness proofs mechanized in Coq for (supersets of) all languages in the paper. The type soundness proofs rely on a language-independent framework formalizing scope graphs and frame heaps.
Cite as

Casper Bach Poulsen, Pierre Néron, Andrew Tolmach, and Eelco Visser. Scopes Describe Frames: A Uniform Model for Memory Layout in Dynamic Semantics (Artifact). In Special Issue of the 30th European Conference on Object-Oriented Programming (ECOOP 2016). Dagstuhl Artifacts Series (DARTS), Volume 2, Issue 1, pp. 10:1-10:3, Schloss Dagstuhl – Leibniz-Zentrum für Informatik (2016)

Copy BibTex To Clipboard

@Article{bachpoulsen_et_al:DARTS.2.1.10,
  author =	{Bach Poulsen, Casper and Néron, Pierre and Tolmach, Andrew and Visser, Eelco},
  title =	{{Scopes Describe Frames: A Uniform Model for Memory Layout in Dynamic Semantics (Artifact)}},
  pages =	{10:1--10:3},
  journal =	{Dagstuhl Artifacts Series},
  ISSN =	{2509-8195},
  year =	{2016},
  volume =	{2},
  number =	{1},
  editor =	{Bach Poulsen, Casper and Néron, Pierre and Tolmach, Andrew and Visser, Eelco},
  publisher =	{Schloss Dagstuhl -- Leibniz-Zentrum f{\"u}r Informatik},
  address =	{Dagstuhl, Germany},
  URL =		{https://drops-dev.dagstuhl.de/entities/document/10.4230/DARTS.2.1.10},
  URN =		{urn:nbn:de:0030-drops-61314},
  doi =		{10.4230/DARTS.2.1.10},
  annote =	{Keywords: Dynamic semantics, scope graphs, memory layout, type soundness, operational semantics}
}
Questions / Remarks / Feedback
X

Feedback for Dagstuhl Publishing


Thanks for your feedback!

Feedback submitted

Could not send message

Please try again later or send an E-mail
© 2023-2024 Schloss Dagstuhl – LZI GmbH Imprint Privacy Contact