rnsloan / tslox

An Interpreter for the Lox programming language in TypeScript using the Deno runtime

Lox Interpreter

A Tree-Walking Interpreter for the Lox programming language in TypeScript http://craftinginterpreters.com/appendix-i.html

Run

Executables

Check the Repository releases page https://github.com/rnsloan/tslox/releases for executables. Example usage:

./tslox.silicon ./code.lox

Manually

Clone the repository. Deno version 1.23 or later is required.

Create code.lox at the root of the project. See the code.sample.lox file.

fun helloWorld() {
  var hello = "hello world!";
  print hello;
}

helloWorld();

run deno task exec for the project root.

Development

Deno version 1.23 or later is required.

• run deno task debug to see output at each stage
• Deno debugger guide: https://deno.land/manual/getting_started/debugging_your_code

Run deno task compile to output the executables.

Specification

The Abstract Syntax Tree format adheres to the Acorn / ESTree Specification with one extension. A PrintStatement node:

interface PrintStatement {
  type: "PrintStatement";
  argument: Expression;
}

Test

• deno task test
• deno task update-snapshots