(7) Programming Environment for KL1 with Program Visualization

	Machine:     PSI
	Environment: SIMPOS, pseudo multi PSI
	Language:    KL1
	Source Code: 2 MB
	Documents:   Manual (English)

Overview

An environment for KL1 with program visualization

Configuration

In making program,each KL1 program clause has a MVC architecture. In running program,each scheduling queue in the KL1 executer has a MVC architecture.

Function

This system is intended to make the readability of KL1 programs higher,and save programmer labor by means of a total programming environment with program visualization.

This trial needed a logical method of analysis of a KL1 program. The result is a system which has these features:

  1. A graphic figure that makes the abstract concepts of data flow and processes and streams,which KL1 has,visable to the user. A graphic figure has a consistency between the program in programming and the goal in execution.
  2. Simultaneously a graphic and a textual representation of the program are used in programming. They are causally connected to each other. Because graphic representations are very good at being understood by intuition but bulkier than text. Texts and graphics have their merits and demerits.
  3. A modeless design is the graphic editor. Graphics are difficult to draw on a computer screen,and need various modes and many mouse button clicks. This system having a graphic editor which impliments modeless design,a user can draw and edit graphics without being troubled with which mode he is operating in,and by the fewest number of clicks.
  4. Multi window design we adopted. In this design,each a KL1 program clause is shown in a separate window. PP supports functions to compose a program by collecting multi windows,which are linked by call-called relation,and to recognize clauses which define the same predicate.

FTP

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