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fix: Check whether a parameter can be converted to a local

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This commit is contained in:
Lukas Wirth
2022-04-09 00:55:45 +02:00
parent 399559e597
commit 15e7112da3
3 changed files with 41 additions and 24 deletions
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9
crates/hir/src/lib.rs
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@@ -1506,10 +1506,15 @@ impl Param {
db.function_data(self.func.id).params[self.idx].0.clone()
}
pub fn as_local(&self, db: &dyn HirDatabase) -> Local {
pub fn as_local(&self, db: &dyn HirDatabase) -> Option<Local> {
let parent = DefWithBodyId::FunctionId(self.func.into());
let body = db.body(parent);
Local { parent, pat_id: body.params[self.idx] }
let pat_id = body.params[self.idx];
if let Pat::Bind { .. } = &body[pat_id] {
Some(Local { parent, pat_id: body.params[self.idx] })
} else {
None
}
}
pub fn pattern_source(&self, db: &dyn HirDatabase) -> Option<ast::Pat> {