Repository: stefano/wasm-forth
Branch: master
Commit: a83428b2e4a9
Files: 37
Total size: 185.6 KB
Directory structure:
gitextract_w71cah5a/
├── .gitignore
├── LICENSE
├── README.md
├── examples/
│ ├── script/
│ │ ├── README
│ │ ├── index.html
│ │ ├── index.js
│ │ └── package.json
│ ├── todomvc/
│ │ ├── README
│ │ ├── index.f
│ │ ├── index.html
│ │ ├── index.js
│ │ ├── package.json
│ │ └── vendor/
│ │ └── index.css
│ └── webpack/
│ ├── README
│ ├── index.html
│ ├── index.js
│ ├── package.json
│ └── webpack.config.js
├── kernel/
│ ├── __init__.py
│ ├── __main__.py
│ ├── asm_ops.py
│ ├── assembler.py
│ ├── binaryen_module.py
│ ├── build_binaryen_ext.py
│ ├── code_words.py
│ ├── forth/
│ │ ├── core.f
│ │ └── vdom.f
│ ├── forth_interpreter.py
│ ├── memory_layout.py
│ └── vendor/
│ └── binaryen-c.h
├── package.json
├── repl/
│ ├── index.html
│ ├── repl.css
│ └── repl.js
├── setup.py
├── src/
│ └── index.js
└── webpack.config.js
================================================
FILE CONTENTS
================================================
================================================
FILE: .gitignore
================================================
dist
node_modules
/wasm_forth.egg-info
/_binaryen_c.abi3.so
/.eggs
/.vscode
/build
/env
__pycache__
================================================
FILE: LICENSE
================================================
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Copyright (C)
This program comes with ABSOLUTELY NO WARRANTY; for details type `show w'.
This is free software, and you are welcome to redistribute it
under certain conditions; type `show c' for details.
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might be different; for a GUI interface, you would use an "about box".
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.
================================================
FILE: README.md
================================================
WASM Forth
==========
A Forth implementation compiling to WebAssembly.
It includes an ANS Forth standard environment containing all the CORE words.
The system has a fixed amount of memory available, currently 128 MB.
Interaction with Javascript at the moment is limited to textual input (using `WasmForth.source`)
and output (through the `write` configuration parameter passed to `WasmForth.boot`).
Using the included (optional) virtual DOM library it's possible to
write interactive web apps. See the code in `examples/todomvc/` for an
example TODO list web app fully implemented in Forth.
Installation
============
$ npm install wasm-forth
Usage
=====
The following code instantiates the interpreter and runs a program that prints "Hello, World!" to the console:
import * as WasmForth from 'wasm-forth';
import wasmURL from 'wasm-forth/dist/kernel.wasm';
import coreURL from 'wasm-forth/dist/core.f';
import vdomURL from 'wasm-forth/dist/vdom.f';
WasmForth.boot({
wasmURL,
sources: [coreURL, vdomURL],
write: (text) => {
console.log(text);
}
}).then(() => {
WasmForth.source(': HELLO S" Hello, World!" TYPE ; HELLO\n');
});
`WasmForth.boot({ ... })` initializes the system and returns a Promise. Once resolved, it's possible to
interpret forth code by passing it to `WasmForth.source(string)`. Note that the string passed must end with a newline.
`WasmForth.boot` accepts a configuration object with 3 required parameters:
- `wasmURL`: URL where to fetch the "kernel.wasm" included in the NPM package.
- `sources`: a list of URLs where to fetch the forth "core.f" included in the NPM package.
- `write`: a function that will be called when the forth code needs to output text.
If you're using webpack, you can use the file-loader (https://github.com/webpack-contrib/file-loader)
plugin to distribute `kernel.wasm`, `core.f` and `vdom.f`.
You can also use this library without a module bundler by loading it in a