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Fix expression scope calculation when within macro expansions

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This commit is contained in:
Lukas Wirth 2024-06-30 13:26:17 +02:00
parent 882ae7105d
commit bfb187aacd
7 changed files with 99 additions and 33 deletions
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34
crates/hir-expand/src/files.rs
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@ -158,6 +158,40 @@ impl<FileId: Copy, N: AstNode> InFileWrapper<FileId, &N> {
// region:specific impls
impl InFile<&SyntaxNode> {
pub fn parent_ancestors_with_macros(
self,
db: &dyn db::ExpandDatabase,
) -> impl Iterator<Item = InFile<SyntaxNode>> + '_ {
let succ = move |node: &InFile<SyntaxNode>| match node.value.parent() {
Some(parent) => Some(node.with_value(parent)),
None => db
.lookup_intern_macro_call(node.file_id.macro_file()?.macro_call_id)
.to_node_item(db)
.syntax()
.cloned()
.map(|node| node.parent())
.transpose(),
};
std::iter::successors(succ(&self.cloned()), succ)
}
pub fn ancestors_with_macros(
self,
db: &dyn db::ExpandDatabase,
) -> impl Iterator<Item = InFile<SyntaxNode>> + '_ {
let succ = move |node: &InFile<SyntaxNode>| match node.value.parent() {
Some(parent) => Some(node.with_value(parent)),
None => db
.lookup_intern_macro_call(node.file_id.macro_file()?.macro_call_id)
.to_node_item(db)
.syntax()
.cloned()
.map(|node| node.parent())
.transpose(),
};
std::iter::successors(Some(self.cloned()), succ)
}
/// Falls back to the macro call range if the node cannot be mapped up fully.
///
/// For attributes and derives, this will point back to the attribute only.