Rust wrapper for WASM3.
This is currently work in progress and may or may not be entirely sound.
A simple example that loads a wasm module and executes an exported function to add two i64s together.
use wasm3::Environment;
use wasm3::Module;
fn main() {
let env = Environment::new().expect("Unable to create environment");
let rt = env
.create_runtime(1024)
.expect("Unable to create runtime");
let module = Module::parse(&env, &include_bytes!("wasm/wasm_add/wasm_add.wasm")[..])
.expect("Unable to parse module");
let module = rt.load_module(module).expect("Unable to load module");
let func = module
.find_function::<(i64, i64), i64>("add")
.expect("Unable to find function");
println!("Wasm says that 3 + 6 is {}", func.call(3, 6).unwrap())
}
This crate currently does not make use of the cmake project of wasm3, meaning cmake is not required to built this for the time being. It does however require Clang 9 to be installed as well as Bindgen, should the build-bindgen feature not be set.
The wasm3 c source is included via a submodule, so before building the submodule has to be initialized, this can be done via:
git submodule update --init
Then to build the project run:
cargo install bindgen cargo build --release # or: cargo build --release --features build-bindgen # or, enable only specific features: cargo build --release --no-default-features --features build-bindgen,std,use-32bit-slots,wasi
rustup target add wasm32-unknown-unknown python wasm_bin_builder.py ./examples/wasm/wasm_add cargo run --example call_wasm python wasm_bin_builder.py ./examples/wasm/wasm_print cargo run --example wasm_print
Licensed under the MIT license (LICENSE-MIT or http://opensource.org/licenses/MIT)
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