e5afdd2ede
* Document the `wasmtime::Instance` APIs This documents oddities like the import list and export list and how to match them all up. Addtionally this largely just expands all the docs related to `Instance` to get filled out. This also moves the `set_signal_handler` functions into platform-specific modules in order to follow Rust idioms about how to expose platform-specific information. Additionally the methods are marked `unsafe` because I figure anything having to do with signal handling is `unsafe` inherently. I don't actually know what these functions do, so they're currently still undocumented. * Fix build of python bindings * Fix some rebase conflicts
69 lines
1.6 KiB
Rust
69 lines
1.6 KiB
Rust
use std::rc::Rc;
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use wasmtime::*;
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#[test]
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fn same_import_names_still_distinct() -> anyhow::Result<()> {
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const WAT: &str = r#"
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(module
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(import "" "" (func $a (result i32)))
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(import "" "" (func $b (result f32)))
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(func (export "foo") (result i32)
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call $a
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call $b
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i32.trunc_f32_u
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i32.add)
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)
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"#;
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struct Ret1;
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impl Callable for Ret1 {
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fn call(&self, params: &[Val], results: &mut [Val]) -> Result<(), Trap> {
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assert!(params.is_empty());
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assert_eq!(results.len(), 1);
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results[0] = 1i32.into();
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Ok(())
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}
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}
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struct Ret2;
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impl Callable for Ret2 {
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fn call(&self, params: &[Val], results: &mut [Val]) -> Result<(), Trap> {
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assert!(params.is_empty());
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assert_eq!(results.len(), 1);
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results[0] = 2.0f32.into();
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Ok(())
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}
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}
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let store = Store::default();
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let wasm = wat::parse_str(WAT)?;
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let module = Module::new(&store, &wasm)?;
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let imports = [
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Func::new(
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&store,
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FuncType::new(Box::new([]), Box::new([ValType::I32])),
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Rc::new(Ret1),
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)
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.into(),
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Func::new(
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&store,
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FuncType::new(Box::new([]), Box::new([ValType::F32])),
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Rc::new(Ret2),
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)
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.into(),
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];
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let instance = Instance::new(&module, &imports)?;
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let func = instance.get_export("foo").unwrap().func().unwrap();
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let results = func.call(&[])?;
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assert_eq!(results.len(), 1);
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match results[0] {
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Val::I32(n) => assert_eq!(n, 3),
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_ => panic!("unexpected type of return"),
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}
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Ok(())
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}
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