Towards moldable development tools

Developers commonly ask detailed and domain-specific questions about the software systems they are developing and maintaining. Integrated development environments (IDEs) form an essential category of tools for developing software that should support software engineering decision making. Unfortunately, rigid and generic IDEs that focus on low-level programming tasks, that promote code rather than data, and that suppress customization, offer limited support for informed decision making during software development. We propose to improve decision making within IDEs by moving from generic to context-aware IDEs through moldable tools. In this paper, we promote the idea of moldable tools, illustrate it with concrete examples, and discuss future research directions.

Polymorphism in the Spotlight: Studying its Prevalence in Java and Smalltalk

Subtype polymorphism is a cornerstone of object-oriented programming. By hiding variability in behavior behind a uniform interface, polymorphism decouples clients from providers and thus enables genericity, modularity and extensi- bility. At the same time, however, it scatters the implementation of the behavior over multiple classes thus potentially hampering program comprehension. The extent to which polymorphism is used in real programs and the impact of polymorphism on program comprehension are not very well understood. We report on a preliminary study of the prevalence of polymorphism in several hundred open source software systems written in Smalltalk, one of the oldest object-oriented programming languages, and in Java, one of the most widespread ones. Although a large portion of the call sites in these systems are polymorphic, a majority have a small number of potential candidates. Smalltalk uses polymorphism to a much greater extent than Java. We discuss how these findings can be used as input for more detailed studies in program comprehension and for better developer support in the IDE.

Tools for embedded computing systems software.

"Preprint for a workshop sponsored by NASA Langley Research Center, Hampton, Virginia, and the American Institute of Aeronautics and Astronautics, New York, and held in Hampton, Virginia, November 7-8, 1978."

A computer research program for solving the reaction rate equations in the E ionospheric region /

Ionospheric Physics Laboratory Project 8653.

Computer program for incentives (a description of a computer program that generates incentive contracting visibility tools), May 1970.

Mode of access: Internet.

An experiment on a unified control construct /

Bibliography: p. 34.

The automatic generation of Floyd production syntactic analyzers /

"September 9, 1969."

A semantic definition system (a preliminary description) /

Bibliography: p. 87.

A universal language for continuous network simulation /

Typescript.

An experiment on CAI sequencing constructs /

Includes bibliographical references.

The translator generator system,

"Supported in part by Contract AT (11-1)-1018 with the U.S. Atomic Energy Commission and the Advanced Research Projects Agency."

Design and implementation of the language PILOT/360 /

Thesis (M. S.)--University of Illinois at Urbana-Champaign.

An interactive syntax analyzer,

Bibliography: p. 33.

String processing on a parallel computer /

Thesis (M.S.)--University of Illinois.

A graphics interpreter language /

"C00-2383-0019."