Match-O, a dialect of Eiffel with match-types
Identifieur interne : 009D22 ( Main/Merge ); précédent : 009D21; suivant : 009D23Match-O, a dialect of Eiffel with match-types
Auteurs : Dominique Colnet [France] ; Luigi Liquori [France]Source :
English descriptors
Abstract
It is well known that the Eiffel language allows covariant redefinition. Regardless of system-level validity rules, Eiffel is not type safe. In this paper, we present a dialect of Eiffel called Match-O, which prohibits covariant redefinition. We introduce a new kind of types, the match-types, inspired by the papers of Kim Bruce. The scope of this project is many-fold: – allowing binary methods; – keeping sound " mytype method specialization " , i.e. anchored type using Current; – allowing subtyping in all other sound cases. We claim that match-types can be added in the Eiffel type system to eliminate type unsoundness without blocking many interesting Eiffel programs (e.g. the ones with " binary methods "). We have implemented a compiler for Match-O and we have experimented our dialect on a large system using the original source code of SmallEiffel itself.
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DOI: 10.1109/TOOLS.2000.891369
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type="university">Université Nancy 2</orgName><orgName type="institution" wicri:auto="newGroup">Université de Lorraine</orgName><placeName><settlement type="city">Nancy</settlement><region type="region" nuts="2">Grand Est</region><region type="old region" nuts="2">Lorraine (région)</region></placeName><orgName type="university">Institut national polytechnique de Lorraine</orgName><orgName type="institution" wicri:auto="newGroup">Université de Lorraine</orgName></affiliation></author></analytic><idno type="DOI">10.1109/TOOLS.2000.891369</idno></biblStruct></sourceDesc></fileDesc><profileDesc><textClass><keywords scheme="mix" xml:lang="en"><term>abstract data types</term><term>object-oriented languages</term><term>program compilers</term></keywords></textClass></profileDesc></teiHeader><front><div type="abstract" xml:lang="en">It is well known that the Eiffel language allows covariant redefinition. Regardless of system-level validity rules, Eiffel is not type safe. In this paper, we present a dialect of Eiffel called Match-O, which prohibits covariant redefinition. We introduce a new kind of types, the match-types, inspired by the papers of Kim Bruce. The scope of this project is many-fold: – allowing binary methods; – keeping sound " mytype method specialization " , i.e. anchored type using Current; – allowing subtyping in all other sound cases. We claim that match-types can be added in the Eiffel type system to eliminate type unsoundness without blocking many interesting Eiffel programs (e.g. the ones with " binary methods "). We have implemented a compiler for Match-O and we have experimented our dialect on a large system using the original source code of SmallEiffel itself.</div></front></TEI></record>Pour manipuler ce document sous Unix (Dilib)
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