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https://github.com/mohanson/pywasm
A WebAssembly interpreter written in pure Python
https://github.com/mohanson/pywasm
webassembly
Last synced: 2 days ago
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A WebAssembly interpreter written in pure Python
- Host: GitHub
- URL: https://github.com/mohanson/pywasm
- Owner: mohanson
- License: mit
- Created: 2018-12-14T02:27:41.000Z (about 6 years ago)
- Default Branch: master
- Last Pushed: 2024-11-18T06:50:31.000Z (about 1 month ago)
- Last Synced: 2024-12-13T03:04:34.415Z (10 days ago)
- Topics: webassembly
- Language: WebAssembly
- Homepage:
- Size: 1.94 MB
- Stars: 453
- Watchers: 17
- Forks: 39
- Open Issues: 0
-
Metadata Files:
- Readme: README.md
- License: LICENSE
Awesome Lists containing this project
README
# Pywasm: A WebAssembly interpreter written in pure Python.
A WebAssembly interpreter written in pure Python, no third-party libraries are used.
The wasm version currently in use is: [WebAssembly Specification, Release 2.0 (Draft 2024-11-12)](https://webassembly.github.io/spec/core/).
Also requires Python version >= 3.12.
# Installation
```sh
$ pip install pywasm
```
# Some simple examples
1. First we need a wasm module! Grab our `./examples/fib.wasm` file and save a copy in a new directory on your local machine. Note: `fib.wasm` was compiled from `./examples/fib.c`.
2. Now, instantiate WebAssembly modules directly from underlying sources. This is achieved using the `Runtime.instance_from_file` method.
```py
import pywasm
pywasm.log.lvl = 1
runtime = pywasm.core.Runtime()
m = runtime.instance_from_file('./examples/fib.wasm')
r = runtime.invocate(m, 'fib', [10])
print(f'fib(10) = {r[0]}')
```
A brief description for `./examples`
| File | Description |
|---------------------|----------------------------------------------|
| ./examples/add.wasm | Export i32.add function |
| ./examples/env.wasm | Call python/native function in wasm |
| ./examples/fib.wasm | Fibonacci, which contains loop and recursion |
| ./examples/str.wasm | Export a function which returns string |
| ./examples/sum.wasm | Equal difference series summation |
# Test
```sh
$ python ./test/test_spec.py
```
# Thanks
- [wagon](https://github.com/go-interpreter/wagon)
- [warpy](https://github.com/kanaka/warpy)
- [zstdpy](https://github.com/dholth/zstdpy)
# License
[MIT](./LICENSE)