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Implement static imports

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This allows importing static objects like `document`, `window`, or an arbitrary
JS object from a module
This commit is contained in:
Alex Crichton
2018-03-21 08:09:59 -07:00
parent eebe23649a
commit 8e894fcfc5
7 changed files with 189 additions and 3 deletions
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23
crates/wasm-bindgen-cli-support/src/js.rs
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@ -1044,9 +1044,12 @@ impl<'a, 'b> SubContext<'a, 'b> {
for f in self.program.exports.iter() {
self.generate_export(f);
}
for f in self.program.imports.iter() {
for f in self.program.imported_functions.iter() {
self.generate_import(f);
}
for f in self.program.imported_fields.iter() {
self.generate_import_field(f);
}
for e in self.program.enums.iter() {
self.generate_enum(e);
}
@ -1319,6 +1322,24 @@ impl<'a, 'b> SubContext<'a, 'b> {
(format!("{} {}", prefix, dst), format!("{} {}", prefix, dst_ts))
}
pub fn generate_import_field(&mut self, import: &shared::ImportField) {
let name = import.shim_name();
self.cx.imports_to_rewrite.insert(name.clone());
if let Some(ref module) = import.module {
self.cx.imports.push_str(&format!("
import {{ {} }} from '{}';
", import.name, module));
}
self.cx.expose_add_heap_object();
self.cx.globals.push_str(&format!("
export function {}() {{
return addHeapObject({});
}}
", name, import.name));
}
pub fn generate_import(&mut self, import: &shared::Import) {
if let Some(ref module) = import.module {
let name_to_import = import.class.as_ref().unwrap_or(&import.function.name);