The first phase is tokenization by the part called the lexer. Fable transpiles F# to ES2015 JavaScript so code written in F# can run anywhere JavaScript runs - the browser, Node.js, Electron,React Native or generally V8.īut a compiler's most popular application is for programs to translate from a higher language to a lower-level language in order to create an executable program see C.Įvery compiler works by executing several well defined phases, each phase taking the input of the previous one until it finally produces runnable code. Since the VM engine that runs Javascript is there, why not reuse it instead of building one from scratch to support our own language? It's easier to convert!įable, is yet another X-to-Javascript transpiler. The TypeScript compiler analyzes and compiles the TypeScript code into JavaScript in order to run on any browser. Yet another example is the case of Typescript which adds optional typing (on that matter make sure to also check Sorbet - Making Ruby Statically Typed) to Javascript, acting as a statically typed and better superset of it. It will allow you to write custom tools, min languages/DSLs, make your own fully fledged language, or as in "Create Your Own Compiler", transform one language to another!Ī prime example of why the latter, in other words transpilation, has proved indispensable is the case of Babel. Since not all browsers are able to cope with all the latest Javascript language features, Babel translates that newest Javascript code into backwards compatible version of JavaScript in current and older browsers or environments. However peeking into that black box and learning to write a compiler gives you super powers. Thinking too much about them, ignoring what happens under the covers. Along with it, we take a look at what a compiler actually is and the state of the art that is Roslyn.Ĭompilers are important, but most people go day by day using their favorite programming language and tools without
"Create Your Own Compiler" is an interactive tutorial that step by step shows how to write your own simple compiler that transforms JavaScript into Lisp.
0 kommentar(er)
