bendns' repos / rust-analyzer
Unnamed repository; edit this file 'description' to name the repository.
Diffstat (limited to 'crates/hir-ty/src/traits.rs')
-rw-r--r--crates/hir-ty/src/traits.rs19
1 files changed, 19 insertions, 0 deletions
diff --git a/crates/hir-ty/src/traits.rs b/crates/hir-ty/src/traits.rs
index 930bc7df5e..02f2cd7615 100644
--- a/crates/hir-ty/src/traits.rs
+++ b/crates/hir-ty/src/traits.rs
@@ -1,5 +1,6 @@
//! Trait solving using Chalk.
+use core::fmt;
use std::env::var;
use chalk_ir::{fold::TypeFoldable, DebruijnIndex, GoalData};
@@ -209,7 +210,25 @@ pub enum FnTrait {
Fn,
}
+impl fmt::Display for FnTrait {
+ fn fmt(&self, f: &mut fmt::Formatter<'_>) -> fmt::Result {
+ match self {
+ FnTrait::FnOnce => write!(f, "FnOnce"),
+ FnTrait::FnMut => write!(f, "FnMut"),
+ FnTrait::Fn => write!(f, "Fn"),
+ }
+ }
+}
+
impl FnTrait {
+ pub const fn function_name(&self) -> &'static str {
+ match self {
+ FnTrait::FnOnce => "call_once",
+ FnTrait::FnMut => "call_mut",
+ FnTrait::Fn => "call",
+ }
+ }
+
const fn lang_item(self) -> LangItem {
match self {
FnTrait::FnOnce => LangItem::FnOnce,