A MODEL FOR VISUALIZING THE EXECUTION OF MODULA-2 PROGRAMS
Date
1991-12-01
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Abstract
This paper presents the initial work in adapting a model for visualizing
program execution of Modula-2 programs that has been successfully used to
describe execution of Pascal programs. Languages like Modula-2, which
support external modules and their separate compilation, co-routines, and
low-level interfaces involve concepts which cannot be readily analyzed
and explained using static models. This model looks at execution in terms
of source code to avoid some of the complexities which exist at the
compiler/assembler level. The model mimics program execution through the
introduction of block instances, static and dynamic links, and the binding
rule as building blocks. Concepts of scope, parameter passing, information
hiding, and quasi-concurrent processes are addressed using the model.
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Computer Science