LO - small programming language targeting WASM that aims to be as simple as possible
- 🏆 Goals
- 🪵 Development Log
- ✍️ Documentation
- 👀 Examples
- 🚀 Getting started
- 🔦 VSCode extension
- ❔ More info
- Make both the language and the compiler small and easy to understand
- Have little to no dependencies
- Be easy to use and modify
- Emit WASM to have the biggest target coverage with little code
🧾 Parts [0..6] - Building the initial compiler. (text based blog)
📺 Parts [7..] - Building the self-hosted compiler. (YouTube playlist)
Documentation is available in docs folder.
Check out example .lo programs including standard library sources and WIP self-hosted compiler in the ./examples folder.
Here are some of them with syntax highlighting from the LO VS Code extension:
- Hello world (source):
- Advent of Code 2020 Day 1 (source):
- Dark Maze (WASM-4 demo game) play it here or check the source:
1️⃣ Using VS Code extension (recommended)
This option also works in vscode.dev
- Install the LO VS Code extension
- To create a new project: Open empty folder, execute Command Palette:
LO: Initialize project in current workspace - To run currently open file: execute Command Palette:
LO: Run current file, or press▶️ button in the top toolbar - Compiling files:
- Open Web Shell: execute Command Palette:
Terminal: Create New Web Shell - Run:
run lo.wasm <input>.lo > <output>.wasm
- Open Web Shell: execute Command Palette:
2️⃣ Using wasmtime
- Install wasmtime
- Compiling files:
wasmtime --dir=. lo.wasm <input>.lo > <output>.wasm - Getting diagnostics (in json format):
wasmtime --dir=. lo.wasm <input>.lo --inspect
3️⃣ Using Node.js
- Install Node.js
- Compiling files:
./utils.mjs compile <input>.lo > <output>.wasm - Compiling & running files:
./utils.mjs run <input>.lo
Additional info on compiler usage is in the docs
Available on:
See Inspection if you are interested in intergrating with other IDEs
More info including building initial compiler and running tests is available in the docs