Implementando Lenguajes de Programación en Javascript

Javascript es un lenguaje maduro y dinámico, que puede ejecutarse en distintas plataformas (clientes, servidor) y dispositivos. Hay docenas de lenguajes implementados en Javascript. Veremos algunas formas de implementación de intérpretes y máquinas virtuales, en navegadores y en Node.js como servidor.

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1. Programming Languages in JavaScript Angel “Java” Lopez @ajlopez Saturday, October 20, 12
2. Agenda • Programming languages implemented in JavaScript • Lexer, Parser, Bytecodes, Code Generation • Interpreters – Lisp – Logo • Compiler – ClojureScript • Smalltalk VM – Amber • TypeScript Saturday, October 20, 12
3. List of Programming http://tinyurl.com/jsconflist Saturday, October 20, 12
4. JavaScript or how to dominate the world http://tinyurl.com/jsconfworld Saturday, October 20, 12
5. Interpreter Lexer Parser Interpreter Source Code Tokens AST Saturday, October 20, 12
6. Compile to Bytecodes Compile to Bytecodes Virtual Machine AST Bytecodes Saturday, October 20, 12
7. Generates Javascript Emitter JS Engine AST Javascript Code Saturday, October 20, 12
8. Links • JS/CC – http://jscc.phorward-software.com/ – The LALR(1) parser and lexical analyzer generator for JavaScript, written in JavaScrip – Used in http://www.playmycode.com/ • Metacompilers Tutorial – http://www.bayfronttechnologies.com/ mc_tutorial.html Saturday, October 20, 12
9. From Lisp, Logo to JavaScript Saturday, October 20, 12
10. Lisp as the Maxwell’s equations of software (by Alan Kay) http://tinyurl.com/jsconfmaxwell http://tinyurl.com/jsconfalankay Saturday, October 20, 12
11. The Magnificent Seven via http://www.paulgraham.com/rootsoflisp https://github.com/fogus/lithp http://tinyurl.com/jsconfseven Saturday, October 20, 12
12. AjLispJs • https://github.com/ajlopez/AjLispJs • Interpreter in Javascript • TDD • Qunit tests • NodeUnit tests • Native Access Saturday, October 20, 12
13. AjLogoJs • https://github.com/ajlopez/AjLogoJs • http://ajlopez.github.com/AjLogoJs/ demo.html • Interpreter • First tests: Node.js assert module • Refactored to: Node.js nodeunit • Procedures • Exposing Turtle via callbacks Saturday, October 20, 12
14. Other Logos in Javascript • http://www.calormen.com/Logo/ • http://logo.twentygototen.org/ Saturday, October 20, 12
15. ClojureScript • https://github.com/clojure/ clojurescript • Compiles Clojure to JavaScript. • Clojure (Java, CLR) • Clojurescript – Javascript repl – Compile .clj to .cljc • Browser demo Saturday, October 20, 12
16. TwitterBuzz Saturday, October 20, 12
17. AjTalk • https://github.com/ajlopez/AjTalk • Smalltalk-like Interpreter • Based on Bytecodes (alternative: interpreter pattern) • Written in C# • Access to .NET types, objects, class libraries • Agents • Distributed Objects • Transactional Objects (STM-alike) • .NET Library and Console App (and ugly GUI ) Saturday, October 20, 12
18. Abstract Model Saturday, October 20, 12
19. AjTalkJs • https://github.com/ajlopez/AjTalkJs • http://ajlopez.github.com/AjTalkJs/ demo.html • Smalltalk-like VM, compiling and executing bytecodes • Written in Javascript, using TDD • Access to Javascript native objects • Browser and Node.js • AjTalkJs compile .st files using Javascript • AjTalk compiles to Javascript and AjTalkJs Saturday, October 20, 12
20. http://amber-lang.net/ Saturday, October 20, 12
21. Amber (via N.Petton, • Amber (Jtalk) is (mostly) written in itself, including the parser & compiler • Full Smalltalk object system, including classes & metaclasses, etc • Core libraries (streams, collections, RegExp, etc) • Web related libraries: HTML Canvas, DOM manipulation • Full featured IDE • Advanced Smalltalk features, including #doesNotUnderstand: support and Saturday, October 20, 12
22. Class Browser in Browser ;-) Saturday, October 20, 12
23. Prof Stef Saturday, October 20, 12
24. TypeScript • http://www.typescriptlang.org • Syntactic sugar for JavaScript • Superset of Ecmascript 5 (ES5) syntax • Every JavaScript program is also a TypeScript program • Includes several proposed features of Ecmascript 6 (ES6), including classes and modules Saturday, October 20, 12