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Implement RFC 11: Redesigning Wasmtime's APIs (#2897)

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Implement Wasmtime's new API as designed by RFC 11. This is quite a large commit which has had lots of discussion externally, so for more information it's best to read the RFC thread and the PR thread.
This commit is contained in:
Alex Crichton
2021-06-03 09:10:53 -05:00
committed by GitHub
parent a5a28b1c5b
commit 7a1b7cdf92
233 changed files with 13349 additions and 11997 deletions
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26
examples/externref.rs
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@@ -10,14 +10,13 @@ fn main() -> Result<()> {
let mut config = Config::new();
config.wasm_reference_types(true);
let engine = Engine::new(&config)?;
let store = Store::new(&engine);
let mut store = Store::new(&engine, ());
println!("Compiling module...");
let module = Module::from_file(&engine, "examples/externref.wat")?;
println!("Instantiating module...");
let imports = [];
let instance = Instance::new(&store, &module, &imports)?;
let instance = Instance::new(&mut store, &module, &[])?;
println!("Creating new `externref`...");
let externref = ExternRef::new("Hello, World!");
@@ -28,20 +27,25 @@ fn main() -> Result<()> {
);
println!("Touching `externref` table...");
let table = instance.get_table("table").unwrap();
table.set(3, Some(externref.clone()).into())?;
let elem = table.get(3).unwrap().unwrap_externref().unwrap();
let table = instance.get_table(&mut store, "table").unwrap();
table.set(&mut store, 3, Some(externref.clone()).into())?;
let elem = table
.get(&mut store, 3)
.unwrap() // assert in bounds
.unwrap_externref() // assert it's an externref table
.unwrap(); // assert the externref isn't null
assert!(elem.ptr_eq(&externref));
println!("Touching `externref` global...");
let global = instance.get_global("global").unwrap();
global.set(Some(externref.clone()).into())?;
let global_val = global.get().unwrap_externref().unwrap();
let global = instance.get_global(&mut store, "global").unwrap();
global.set(&mut store, Some(externref.clone()).into())?;
let global_val = global.get(&mut store).unwrap_externref().unwrap();
assert!(global_val.ptr_eq(&externref));
println!("Calling `externref` func...");
let func = instance.get_typed_func::<Option<ExternRef>, Option<ExternRef>>("func")?;
let ret = func.call(Some(externref.clone()))?;
let func =
instance.get_typed_func::<Option<ExternRef>, Option<ExternRef>, _>(&mut store, "func")?;
let ret = func.call(&mut store, Some(externref.clone()))?;
assert!(ret.is_some());
assert!(ret.unwrap().ptr_eq(&externref));