5024d7bf09
* Impl different formatters for flags Rather than forcing only binary formatting of flags types, how about we implement all relevant traits (`Binary`, `Octal`, `LowerHex`, and `UpperHex`) and allow the user to pick the most relevant one for their use case? Also, we use at least `Octal` and `LowerHex` in a couple of places in `wasi-common`. * fmt::Display for flags now inspired by bitflags Flags is now by default formatted similarly to how `bitflags` crate does it, namely, `dsync|append (0x11)`. In case we're dealing with an empty set, we get `empty (0x0)`. Because of this, any `Octal`, `LowerHex`, etc., formatters are redundant now. Furthermore, while here, I've rewritten `EMPTY_FLAGS` and `ALL_FLAGS` (where the former means `0x0` and the latter is the union of all possible values) to be `const fn empty()` and `const fn all()` where the latter is an expanded union of primitive representation values out of a macro. This is again largely inspired by the `bitflags` crate. * Test fmt::Display for flags
wasmtime
A standalone runtime for WebAssembly
A Bytecode Alliance project
Guide | Contributing | Website | Chat
Installation
The Wasmtime CLI can be installed on Linux and macOS with a small install script:
$ curl https://wasmtime.dev/install.sh -sSf | bash
Windows or otherwise interested users can download installers and binaries directly from the GitHub Releases page.
Example
If you've got the Rust compiler installed then you can take some Rust source code:
fn main() {
println!("Hello, world!");
}
and compile/run it with:
$ rustup target add wasm32-wasi
$ rustc hello.rs --target wasm32-wasi
$ wasmtime hello.wasm
Hello, world!
Features
-
Lightweight. Wasmtime is a standalone runtime for WebAssembly that scales with your needs. It fits on tiny chips as well as makes use of huge servers. Wasmtime can be embedded into almost any application too.
-
Fast. Wasmtime is built on the optimizing Cranelift code generator to quickly generate high-quality machine code at runtime.
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Configurable. Whether you need to precompile your wasm ahead of time, generate code blazingly fast with Lightbeam, or interpret it at runtime, Wasmtime has you covered for all your wasm-executing needs.
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WASI. Wasmtime supports a rich set of APIs for interacting with the host environment through the WASI standard.
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Standards Compliant. Wasmtime passes the official WebAssembly test suite, implements the official C API of wasm, and implements future proposals to WebAssembly as well. Wasmtime developers are intimately engaged with the WebAssembly standards process all along the way too.
Documentation
📚 Read the Wasmtime guide here! 📚
The wasmtime guide is the best starting point to learn about what Wasmtime can do for you or help answer your questions about Wasmtime. If you're curious in contributing to Wasmtime, it can also help you do that!.
It's Wasmtime.