3c51d3adb8
* Move all examples to a top-level directory This commit moves all API examples (Rust and C) to a top-level `examples` directory. This is intended to make it more discoverable and conventional as to where examples are located. Additionally all examples are now available in both Rust and C to see how to execute the example in the language you're familiar with. The intention is that as more languages are supported we'd add more languages as examples here too. Each example is also accompanied by either a `*.wat` file which is parsed as input, or a Rust project in a `wasm` folder which is compiled as input. A simple driver crate was also added to `crates/misc` which executes all the examples on CI, ensuring the C and Rust examples all execute successfully.
27 lines
837 B
Rust
27 lines
837 B
Rust
//! Example of instantiating of the WebAssembly module and invoking its exported
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//! function.
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// You can execute this example with `cargo run --example gcd`
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use anyhow::Result;
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use wasmtime::*;
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fn main() -> Result<()> {
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// Load our WebAssembly (parsed WAT in our case), and then load it into a
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// `Module` which is attached to a `Store` cache. After we've got that we
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// can instantiate it.
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let store = Store::default();
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let module = Module::from_file(&store, "examples/gcd.wat")?;
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let instance = Instance::new(&module, &[])?;
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// Invoke `gcd` export
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let gcd = instance
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.get_export("gcd")
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.and_then(|e| e.func())
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.ok_or(anyhow::format_err!("failed to find `gcd` function export"))?
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.get2::<i32, i32, i32>()?;
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println!("gcd(6, 27) = {}", gcd(6, 27)?);
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Ok(())
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}
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