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Add test for consuming interface types inputs (#1900)

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This commit adds a test suite for consuming interface types modules as
input and producing a JS polyfill output. The tests are relatively
simple today and don't exercise a ton of functionality, but they should
hopefully cover the breadth of at least some basics of what wasm
interface types supports today.

A few small fixes were applied along the way, such as:

* Don't require modules to have a stack pointer

* Allow passing `*.wat`, `*.wit`, or `*.wasm` files as input to
  `wasm-bindgen` instead of always requiring `*.wasm`.
This commit is contained in:
Alex Crichton
2019-12-04 22:39:57 -06:00
committed by GitHub
parent a1d90398d0
commit 057c9157b3
22 changed files with 319 additions and 15 deletions
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14
crates/wasm-conventions/src/lib.rs
View File

@ -33,7 +33,7 @@ pub fn get_memory(module: &Module) -> Result<MemoryId, Error> {
///
/// It must have been previously added to the module's exports via
/// `export_shadow_stack_pointer`.
pub fn get_shadow_stack_pointer(module: &Module) -> Result<GlobalId, Error> {
pub fn get_shadow_stack_pointer(module: &Module) -> Option<GlobalId> {
let candidates = module
.globals
.iter()
@ -48,12 +48,10 @@ pub fn get_shadow_stack_pointer(module: &Module) -> Result<GlobalId, Error> {
})
.collect::<Vec<_>>();
let ssp = match candidates.len() {
0 => bail!("could not find the shadow stack pointer for the module"),
match candidates.len() {
0 => None,
// TODO: have an actual check here.
1 => candidates[0].id(),
_ => bail!("too many mutable globals to infer which is the shadow stack pointer"),
};
Ok(ssp)
1 => Some(candidates[0].id()),
_ => None,
}
}