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Add #[wasm_bindgen(assert_no_shim)] on imported functions for testing

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This should not be used outside of wasm-bindgen's test suite.
This commit is contained in:
Nick Fitzgerald
2019-07-11 15:12:48 -07:00
parent 2d0866da9a
commit bce892b625
8 changed files with 34 additions and 1 deletions
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11
crates/cli-support/src/js/mod.rs
View File

@ -1839,7 +1839,8 @@ impl<'a> Context<'a> {
for (id, import) in sorted_iter(&aux.import_map) {
let variadic = aux.imports_with_variadic.contains(&id);
let catch = aux.imports_with_catch.contains(&id);
self.generate_import(*id, import, bindings, variadic, catch)
let assert_no_shim = aux.imports_with_assert_no_shim.contains(&id);
self.generate_import(*id, import, bindings, variadic, catch, assert_no_shim)
.with_context(|_| {
format!("failed to generate bindings for import `{:?}`", import,)
})?;
@ -1978,6 +1979,7 @@ impl<'a> Context<'a> {
bindings: &NonstandardWebidlSection,
variadic: bool,
catch: bool,
assert_no_shim: bool,
) -> Result<(), Error> {
let binding = &bindings.imports[&id];
let webidl = bindings
@ -1996,6 +1998,13 @@ impl<'a> Context<'a> {
)
}
_ => {
if assert_no_shim {
panic!(
"imported function was annotated with `#[wasm_bindgen(assert_no_shim)]` \
but we need to generate a JS shim for it"
);
}
let mut builder = binding::Builder::new(self);
builder.catch(catch)?;
let js = builder.process(

5
crates/cli-support/src/webidl/mod.rs
View File

@ -163,6 +163,7 @@ pub struct WasmBindgenAux {
/// Small bits of metadata about imports.
pub imports_with_catch: HashSet<ImportId>,
pub imports_with_variadic: HashSet<ImportId>,
pub imports_with_assert_no_shim: HashSet<ImportId>,
/// Auxiliary information to go into JS/TypeScript bindings describing the
/// exported enums from Rust.
@ -793,6 +794,7 @@ impl<'a> Context<'a> {
method,
structural,
function,
assert_no_shim,
} = function;
let (import_id, _id) = match self.function_imports.get(*shim) {
Some(pair) => *pair,
@ -811,6 +813,9 @@ impl<'a> Context<'a> {
if *catch {
self.aux.imports_with_catch.insert(import_id);
}
if *assert_no_shim {
self.aux.imports_with_assert_no_shim.insert(import_id);
}
// Perform two functions here. First we're saving off our WebIDL
// bindings signature, indicating what we think our import is going to