A Server-side JavaScript System for Developing Practical Web Applications

本研究旨在开发一种高效的服务器端JavaScript引擎，以期降低Web应用程序的开发成本。所获得的结果可以总结如下。(1)我们已经开发了一个JavaScript虚拟机，它可以根据运行时信息优化程序执行。(2)我们开发了一个外部函数接口，使程序员能够从JavaScript程序调用C函数。(3)我们扩展了（1）中描述的JavaScript虚拟机，使其可以作为事件驱动的服务器并行运行。(4)我们已经为JavaScript程序的一个子集开发了一个渐进类型系统，作为它们安全执行的基础。

This research aims to develop an efficient server-side JavaScript engine that is expected to reduce the development cost of web applications. The obtained results can be summarized as follows. (1) We have developed a JavaScript virtual machine that optimizes the program execution on the basis of run-time information. (2) We have developed a foreign function interface that enables the programmer to call C functions from a JavaScript program. (3) We have extended the JavaScript virtual machine described in (1) so that it can run in parallel as event-driven servers. (4) We have developed a gradual type system for a subset of JavaScript programs to be a base of their safe execution.