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Implement the local JS snippets RFC

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This commit is an implementation of [RFC 6] which enables crates to
inline local JS snippets into the final output artifact of
`wasm-bindgen`. This is accompanied with a few minor breaking changes
which are intended to be relatively minor in practice:

* The `module` attribute disallows paths starting with `./` and `../`.
  It requires paths starting with `/` to actually exist on the filesystem.
* The `--browser` flag no longer emits bundler-compatible code, but
  rather emits an ES module that can be natively loaded into a browser.

Otherwise be sure to check out [the RFC][RFC 6] for more details, and
otherwise this should implement at least the MVP version of the RFC!
Notably at this time JS snippets with `--nodejs` or `--no-modules` are
not supported and will unconditionally generate an error.

[RFC 6]: https://github.com/rustwasm/rfcs/pull/6

Closes #1311
This commit is contained in:
Alex Crichton
2019-02-25 11:11:30 -08:00
parent f161717afe
commit b762948456
32 changed files with 985 additions and 380 deletions
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6
crates/webidl/src/lib.rs
View File

@ -272,7 +272,7 @@ impl<'src> FirstPassRecord<'src> {
) {
let variants = &enum_.values.body.list;
program.imports.push(backend::ast::Import {
module: None,
module: backend::ast::ImportModule::None,
js_namespace: None,
kind: backend::ast::ImportKind::Enum(backend::ast::ImportEnum {
vis: public(),
@ -463,7 +463,7 @@ impl<'src> FirstPassRecord<'src> {
self.append_required_features_doc(&import_function, &mut doc, extra);
import_function.doc_comment = doc;
module.imports.push(backend::ast::Import {
module: None,
module: backend::ast::ImportModule::None,
js_namespace: Some(raw_ident(self_name)),
kind: backend::ast::ImportKind::Function(import_function),
});
@ -539,7 +539,7 @@ impl<'src> FirstPassRecord<'src> {
import_type.doc_comment = doc_comment;
program.imports.push(backend::ast::Import {
module: None,
module: backend::ast::ImportModule::None,
js_namespace: None,
kind: backend::ast::ImportKind::Type(import_type),
});