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Implement #[wasm_bindgen(extends = ...)]

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This commit implements the `extends` attribute for `#[wasm_bindgen]` to
statically draw the inheritance hierarchy in the generated bindings, generating
appropriate `AsRef`, `AsMut`, and `From` implementations.
This commit is contained in:
Alex Crichton
2018-08-04 10:00:30 -07:00
parent 11553a1af2
commit 37db88ebfa
10 changed files with 331 additions and 4 deletions
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6
crates/webidl/src/lib.rs
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@ -39,6 +39,7 @@ use backend::defined::{ImportedTypeDefinitions, RemoveUndefinedImports};
use backend::util::{ident_ty, rust_ident, wrap_import_function};
use failure::ResultExt;
use heck::{ShoutySnakeCase};
use proc_macro2::{Ident, Span};
use weedle::argument::Argument;
use weedle::attribute::{ExtendedAttribute, ExtendedAttributeList};
@ -246,7 +247,10 @@ impl<'src> WebidlParse<'src, ()> for weedle::InterfaceDefinition<'src> {
name: rust_ident(camel_case_ident(self.identifier.0).as_str()),
attrs: Vec::new(),
doc_comment,
instanceof_shim: format!("__widl_instanceof_{}", self.name),
instanceof_shim: format!("__widl_instanceof_{}", self.identifier.0),
extends: first_pass.all_superclasses(self.identifier.0)
.map(|name| Ident::new(&name, Span::call_site()))
.collect(),
}),
});