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Support #[rustc_builtin_macro = "builtin_name"]

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This commit is contained in:
Jonas Schievink 2021-04-03 03:13:04 +02:00
parent 6198eb74b2
commit 5742cdf3f1
1 changed files with 11 additions and 1 deletions
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12
crates/hir_def/src/nameres/collector.rs
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@ -1402,8 +1402,18 @@ impl ModCollector<'_, '_> {
// Case 1: builtin macros
if attrs.by_key("rustc_builtin_macro").exists() {
// `#[rustc_builtin_macro = "builtin_name"]` overrides the `macro_rules!` name.
let name;
let name = match attrs.by_key("rustc_builtin_macro").string_value() {
Some(it) => {
// FIXME: a hacky way to create a Name from string.
name = tt::Ident { text: it.clone(), id: tt::TokenId::unspecified() }.as_name();
&name
}
None => &mac.name,
};
let krate = self.def_collector.def_map.krate;
if let Some(macro_id) = find_builtin_macro(&mac.name, krate, ast_id) {
if let Some(macro_id) = find_builtin_macro(name, krate, ast_id) {
self.def_collector.define_macro_rules(
self.module_id,
mac.name.clone(),