| Título: | Converting Java programs to use generic libraries |
| Autores: | Donovan, Alan A. A., 1976- |
| Fecha: |
2005-09-27 2005-09-27 2004 2004 |
| Publicador: | MIT |
| Fuente: |
 |
| Tipo: | Thesis |
| Tema: | Electrical Engineering and Computer Science. |
| Descripción: |
Java 1.5 will include a type system (called JSR-14) that supports parametric polymorphism, or generic classes. This will bring many benefits to Java programmers, not least because current Java practise makes heavy use of logically-generic classes, including container classes. Translation of Java source code into semantically equivalent JSR-14 source code requires two steps: parameterisation (adding type parameters to class definitions) and instantiation (adding the type arguments at each use of a parameterised class). Parameterisation need be done only once for a class, whereas instantiation must be performed for each client, of which there are potentially many more. Therefore, this work focuses on the instantiation problem. We present a technique to determine sound and precise JSR-14 types at each use of a class for which a generic type specification is available. Our approach uses a precise and context-sensitive pointer analysis to determine possible types at allocation sites, and a set-constraint-based analysis (that incorporates guarded, or conditional, constraints) to choose consistent types for both allocation and declaration sites. The technique safely handles all features of the JSR-14 type system, notably the raw types (which provide backward compatibility) and 'unchecked' operations on them. We have implemented our analysis in a tool that automatically inserts type arguments into Java code, and we report its performance when applied to a number of real-world Java programs. by Alan A.A. Donovan. Thesis (S.M.)--Massachusetts Institute of Technology, Dept. of Electrical Engineering and Computer Science, 2004. Includes bibliographical references (leaves 121-127). |
| Idioma: | Inglés |
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