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parse_macro_expansion_error almost never contains values so Option it

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This commit is contained in:
Lukas Wirth 2024-05-13 17:02:08 +02:00
parent 56552f4839
commit caddcccea5
3 changed files with 14 additions and 8 deletions
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13
crates/hir-expand/src/db.rs
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@ -129,11 +129,10 @@ pub trait ExpandDatabase: SourceDatabase {
/// user wrote in the file that defines the proc-macro.
fn proc_macro_span(&self, fun: AstId<ast::Fn>) -> Span;
/// Firewall query that returns the errors from the `parse_macro_expansion` query.
// FIXME: Option<Arc<...>>
fn parse_macro_expansion_error(
&self,
macro_call: MacroCallId,
) -> ExpandResult<Arc<[SyntaxError]>>;
) -> Option<Arc<ExpandResult<Arc<[SyntaxError]>>>>;
}
/// This expands the given macro call, but with different arguments. This is
@ -358,8 +357,14 @@ fn parse_macro_expansion(
fn parse_macro_expansion_error(
db: &dyn ExpandDatabase,
macro_call_id: MacroCallId,
) -> ExpandResult<Arc<[SyntaxError]>> {
db.parse_macro_expansion(MacroFileId { macro_call_id }).map(|it| it.0.errors().into())
) -> Option<Arc<ExpandResult<Arc<[SyntaxError]>>>> {
let e: ExpandResult<Arc<[SyntaxError]>> =
db.parse_macro_expansion(MacroFileId { macro_call_id }).map(|it| Arc::from(it.0.errors()));
if e.value.is_empty() && e.err.is_none() {
None
} else {
Some(Arc::new(e))
}
}
pub(crate) fn parse_with_map(