软件开发图形工具研究

RESEARCH ON THE TOOLS EXPRESSED BY DIAGRAMS IN SOFTWARE DEVELOPMENT

寻求一种比目前正在使用的高级程序设计语言更为有效的编程方法,以缓解软件危机问题,虽然软件工程中用了许多图形工具,但是最终的软件产品仍然是用高级语言来表示的程序代码,正文式程序代码的可读性还不够好,软件的维护还有许多困难.论述了用图形表达程序,用计算机去识别图形的语义,图形表达形象直现,可读性好,会提高软件的开发效率,在微型机上实现了部分结构化的图形编辑和编译功能;可以把用图形表达的程序自动编译成C语言程序。

The purpose is to seek a programming method which is more efficient than the high level programming languages (HL) that we are using now, and to lessen the software crisis. Many diagram tools have been used to express softwares in some fields. 'Some interactive programming environments can be used to produce program codes automatically. But the final software products are still program codes expressed by HL. They suffer from the defect that the HL codes are poor in readability and makes software maintenance difficult. In this paper we have discussed a method to express programs by diagrams and to recognize the meaning of the diagrams by computers. To express a program by diagrams is direct and imaginable. It is better in readability and maintainability to express a program by diagrams instead of texts. Diagrams will promote the rate of software production. We have partly finished the structured diagram experiment in editor and compiler. A program expressed by diagrams can be translated into C language progrom automatically.