3/27/2023 0 Comments Haskell chipmunk basic interpeter![]() These applets provided new capabilities and, within the confines of the base class, provided dynamic execution. The HotJava "applet" model was based on the notion that a Java application could create a generic base class with a known interface, and then dynamically load subclasses of that class and execute them at run time. The most famous embedded interpreter has to be the HotJava "applet" environment that has completely reshaped the way people look at Web browsers. A model or environment for interacting with the host program.A module format, for storing instructions to be executed.A means of being loaded with instructions.An interpreter requires three facilities in order to operate: A dynamic execution engine is an embedded interpreter. ![]() Let's explore briefly some of the dynamic execution engine options available and then look at the implementation of my interpreter in depth. The Java platform offers a wide variety of dynamic execution engine options. The benefit of having a dynamic execution engine is that tools and applications can be customized to perform complex tasks without replacing the tool. Known as macro languages, or configuration languages, dynamic execution is the feature that allows an application to be "programmed" by the user. The mechanism of choice for re-configuration is some sort of dynamic execution engine. Often, in building an application, you would like it to be configurable. On the complex side, I've noticed that many people using Java today have gotten past the point of creating tumbling Duke applets and are moving on to serious applications. The simple response is that it was fun to write an interpreter in Java, and if I were going to write an interpreter, I might as well write one about which I have fond memories from the early days of personal computing. "Why in the world would you build a BASIC interpreter in Java?" was the predictable first question out of his mouth. ![]() When I told a friend that I had written a BASIC interpreter in Java, he laughed so hard he nearly spilled the soda he was holding all over his clothes. ![]()
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