国标BASIC语言实现中的集成化编程支持环境

The integrated Programming Environment in the Implementation of National Standard BASIC Language

本文介绍了在国家“七五”科技攻关项目“国标BASIC语言的实现”中所设计实现的一个集成化编程支持环境。它以语法树作为环境内部的唯一存贮形式,使环境中各部分共享这一统一的内部表示。本文介绍了该环境的结构、功能特点及实现,着重介绍了语法制导的编辑器以及程序的正文表示形式和语法树表示形式之间的相互转换,同时阐述了该环境对自顶向下逐步求精的程序设计方法学的支持。

This paper introduces the integrated programming environment, which is designed and implemented in ' the implementation of National Standard BASIC Language' , the object of national science and technology of the, '7th five year plan' . In this environment,program is represented as a syntax tree, and all tools for programming share the common internal syntax tree representation.The structure, function and implementation of the environment are proposed, meanwhile, the syntax directed editor and the transform Between text representation and syntax tree represenation are further discussed.in addition, the support for the top-down and step-wise programming methodology is introduced.