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PLEASE NOTE: The Publications System provided by the Manufacturing Systems Integration Division (MSID) has moved to: http://www.mel.nist.gov/msidlibrary/publications.html. The pages below are maintained for archival purposes only.
Publication summary
Author(s): Don Libes and Steve Clark
Publication date: October 1992
Citation: Don Libes and Steve Clark: "The NIST EXPRESS Toolkit - Lessons Learned," EXPRESS Users Group Conference, October, 1992.
Availability:
- Postscript
- A paper copy of this document is available by contacting Kristy Thompson [web,email]
Abstract:
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In 1990, NIST released a software toolkit for building
EXPRESS-related tools. The software was based on early drafts of
EXPRESS and included a parser, a resolver, and a framework for
producing schema-independent tools.
During the past year, we have redesigned the toolkit with respect to
user experience and the EXPRESS DIS. Our work will be of interest to
implementors of EXPRESS DIS. Our work will be of interest to
implementors of EXPRESS tools and toolkits. This paper describes our
work and the current state of the NIST EXPRESS toolkit.
As well as describing our efforts in improving the toolkit
performance, we will comment on: the "hard" parts of implementing the
EXPRESS language, things we did wrong, several
implementation-dependent extensions to EXPRESS, and sophisticated
error and warning detection.
We will also revisit our original ideas underlying the toolkit
concept. We will discuss whether, in light of our experiences, the
concepts still make sense, can be amended, or should be entirely
scrapped.
Attention users of these documents: The information contained
in these files should not be altered in any way. Attempts to change
these files will adversely impact the integrity of the information and
its usefulness. It is intended for use as is and will lose its
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