Proceedings of the 24th ACM SIGPLAN-SIGACT symposium on Principles of programming languages
Adding type parameterization to the Java language
Proceedings of the 12th ACM SIGPLAN conference on Object-oriented programming, systems, languages, and applications
Making the future safe for the past: adding genericity to the Java programming language
Proceedings of the 13th ACM SIGPLAN conference on Object-oriented programming, systems, languages, and applications
Parametric polymorphism in Java: an approach to translation based on reflective features
OOPSLA '00 Proceedings of the 15th ACM SIGPLAN conference on Object-oriented programming, systems, languages, and applications
Design and implementation of generics for the .NET Common language runtime
Proceedings of the ACM SIGPLAN 2001 conference on Programming language design and implementation
Featherweight Java: a minimal core calculus for Java and GJ
ACM Transactions on Programming Languages and Systems (TOPLAS)
Java Language Specification, Second Edition: The Java Series
Java Language Specification, Second Edition: The Java Series
Efficient first-class generics on stock Java virtual machines
Proceedings of the 2006 ACM symposium on Applied computing
Variant parametric types: A flexible subtyping scheme for generics
ACM Transactions on Programming Languages and Systems (TOPLAS)
On the reification of Java wildcards
Science of Computer Programming
Java wildcards meet definition-site variance
ECOOP'12 Proceedings of the 26th European conference on Object-Oriented Programming
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Providing runtime information about generic types---that is, reifying generics---is a challenging problem studied in several research papers in the last years. However, the quest for finding effective and efficient solutions specifically targeted to the Java programming language is still open. In particular, the new mechanism of wildcards introduced in Java 5.0 significantly complicates the overall semantics of generics: its reification aspects are currently unexplored and pose serious implementation issues. In this paper we analyse such issues and study how they have been supported in the context of the EGO compiler. EGO is an approach for efficiently supporting runtime generics at compile-time in Java: synthetic code is automatically added to the source code by the compiler, so as to create generic runtime type information on a by-need basis, store it into object instances, and retrieve it when necessary in type-dependent operations. We show how the design of EGO has been completely and successfully extended to represent wildcard types, and how we deal with subtle issues concerning subtyping, capture conversion and wildcards capture in method calls.