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Expand derive macros under cursor in Expand Macro Recursively

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This commit is contained in:
Lukas Wirth 2021-08-24 16:33:52 +02:00
parent 6287d388c0
commit d99b81f839
7 changed files with 90 additions and 2 deletions
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16
crates/hir/src/semantics.rs
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@ -148,6 +148,10 @@ impl<'db, DB: HirDatabase> Semantics<'db, DB> {
self.imp.expand_attr_macro(item)
}
pub fn expand_derive_macro(&self, derive: &ast::Attr) -> Option<SyntaxNode> {
self.imp.expand_derive_macro(derive)
}
pub fn is_attr_macro_call(&self, item: &ast::Item) -> bool {
self.imp.is_attr_macro_call(item)
}
@ -385,6 +389,18 @@ impl<'db> SemanticsImpl<'db> {
Some(node)
}
fn expand_derive_macro(&self, attr: &ast::Attr) -> Option<SyntaxNode> {
let item = attr.syntax().parent().and_then(ast::Item::cast)?;
let sa = self.analyze(item.syntax());
let item = InFile::new(sa.file_id, &item);
let src = InFile::new(sa.file_id, attr.clone());
let macro_call_id = self.with_ctx(|ctx| ctx.attr_to_derive_macro_call(item, src))?;
let file_id = macro_call_id.as_file();
let node = self.db.parse_or_expand(file_id)?;
self.cache(node.clone(), file_id);
Some(node)
}
fn is_attr_macro_call(&self, item: &ast::Item) -> bool {
let sa = self.analyze(item.syntax());
let src = InFile::new(sa.file_id, item.clone());