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Use delete_typed to improve some ergonomics

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This commit is contained in:
Alex Crichton 2019-05-30 08:57:28 -07:00
parent e8e84a3f9c
commit 22b26db911
1 changed files with 11 additions and 16 deletions
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27
crates/cli-support/src/webidl.rs
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@ -475,24 +475,22 @@ impl<'a> Context<'a> {
}
}
let mut descriptor_section = None;
for (id, section) in self.module.customs.iter_mut() {
let custom = match section
.as_any_mut()
.downcast_mut::<WasmBindgenDescriptorsSection>()
{
Some(s) => s,
None => continue,
};
descriptor_section = Some(id);
if let Some(custom) = self
.module
.customs
.delete_typed::<WasmBindgenDescriptorsSection>()
{
let WasmBindgenDescriptorsSection {
descriptors,
closure_imports,
} = *custom;
// Store all the executed descriptors in our own field so we have
// access to them while processing programs.
self.descriptors.extend(custom.descriptors.drain());
self.descriptors.extend(descriptors);
// Register all the injected closure imports as that they're expected
// to manufacture a particular type of closure.
for (id, descriptor) in custom.closure_imports.drain() {
for (id, descriptor) in closure_imports {
self.aux
.import_map
.insert(id, AuxImport::Closure(descriptor));
@ -506,9 +504,6 @@ impl<'a> Context<'a> {
.insert(id, ImportBinding::Function(binding));
}
}
if let Some(id) = descriptor_section {
self.module.customs.delete(id);
}
}
fn program(&mut self, program: decode::Program<'a>) -> Result<(), Error> {