小程序 在浏览器上运行Java程序 Doppio（源码）.zip

DoppioVM: A JVM in Coffeescript ================================= _Doppio_ is a double shot of espresso. In this case it's also a JVM written in [Coffeescript](http://coffeescript.org/). It began life as a [Mid-term project](http://plasma.cs.umass.edu/emery/grad-systems-project-1) for [CS 691ST, Spring 2012](http://plasma.cs.umass.edu/emery/grad-systems) at [UMass Amherst](http://www.cs.umass.edu/). To try Doppio now, head to the [live demo page](http://int3.github.com/doppio/). Getting & Building the Code --------------------------- After `git clone`, do git submodule update --init --recursive Java programs need the Java Class Library. This generally lives in an archive named `rt.jar`, which comes with the JRE. Note that you do not need a JDK to run Doppio, but our automated tests do require a Java compiler and disassembler (`javac` and `javap`, respectively). To provide the JCL for Doppio, simply unzip the class library in `third_party/classes`. On OS X Lion, `rt.jar` is confusingly named `classes.jar`: cd third_party/classes unzip /System/Library/Frameworks/JavaVM.framework/Classes/classes.jar We've opted to patch the `java.util.zip` package with [Jazzlib](http://jazzlib.sourceforge.net/), a pure-Java third-party implementation. Download [the classes][jazzlib] and copy them over the files in `third_party/classes/java/util/zip/`. Use [Coffeescript v1.2.0][coffee]: npm install -g coffee-script@1.2.0 Run `coffee -wc */*.coffee &` to auto-generate javascript sources if you make any changes to the code. If you want to run the console-based frontend, you'll need the `optimist` node.js library: npm install optimist To build the release copy of the code, you'll need [rdiscount][rdisc] as well. Finally, to ensure that everything is set up properly, run: make test [coffee]: http://coffeescript.org/ [rdisc]: https://github.com/rtomayko/rdiscount [jazzlib]: http://sourceforge.net/projects/jazzlib/files/jazzlib/0.07/jazzlib-binary-0.07-juz.zip/download Usage ----- To run Doppio on localhost, run `. startup.sh`, or start the browser frontend manually: cpp -P -traditional-cpp browser/index.html index.html ruby webrick.rb --dev To get the optimized release version: make release ruby webrick.rb --release Then point your browser to http://localhost:8000/. The code can also be run from the console. For example: ./console/disassembler.coffee test/Println.class ./console/runner.coffee test/Println Testing ------- Run the automated test-runner to check runtime and disassembler output: make test The tests can take a while to complete, so consider running them in parallel (`make -j4`).