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hir: show const value in hover

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This commit is contained in:
Jake Heinz 2021-11-17 05:49:27 +00:00
parent add6cccd4c
commit 4fbc4b9356
3 changed files with 42 additions and 28 deletions
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12
crates/hir/src/display.rs
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@ -401,7 +401,8 @@ fn write_where_clause(def: GenericDefId, f: &mut HirFormatter) -> Result<(), Hir
impl HirDisplay for Const {
fn hir_fmt(&self, f: &mut HirFormatter) -> Result<(), HirDisplayError> {
write_visibility(self.module(f.db).id, self.visibility(f.db), f)?;
let module_id = self.module(f.db).id;
write_visibility(module_id, self.visibility(f.db), f)?;
let data = f.db.const_data(self.id);
write!(f, "const ")?;
match &data.name {
@ -409,6 +410,15 @@ impl HirDisplay for Const {
None => write!(f, "_: ")?,
}
data.type_ref.hir_fmt(f)?;
let ast_id_map = f.db.ast_id_map(data.file_id);
let ast_node = ast_id_map.get(data.ast_id);
if let Some(syntax_node) = f.db.parse_or_expand(data.file_id) {
let ast_node = ast_node.to_node(&syntax_node);
if let Some(body) = ast_node.body() {
write!(f, " = {}", body)?;
}
}
Ok(())
}
}