Merge #5643

5643: Add new consuming modifier, apply consuming and mutable to methods r=matklad a=Nashenas88

This adds a new `consuming` semantic modifier for syntax highlighters.

This also emits `mutable` and `consuming` in two cases:

- When a method takes `&mut self`, then it now has `function.mutable` emitted.
- When a method takes `self`, and the type of `Self` is not `Copy`, then `function.consuming` is emitted.

CC @flodiebold 

Co-authored-by: Paul Daniel Faria <[email protected]>

1 files changed, 15 insertions, 0 deletions

diff --git a/crates/hir/src/code_model.rs b/crates/hir/src/code_model.rs
index c442654dd..31d5276b0 100644
--- a/crates/hir/src/code_model.rs
+++ b/crates/hir/src/code_model.rs
@@ -670,6 +670,21 @@ impl Function {
         db.function_data(self.id).has_self_param
     }
 
+    pub fn mutability_of_self_param(self, db: &dyn HirDatabase) -> Option<Mutability> {
+        let func_data = db.function_data(self.id);
+        if !func_data.has_self_param {
+            return None;
+        }
+
+        func_data.params.first().and_then(|param| {
+            if let TypeRef::Reference(_, mutability) = param {
+                Some(*mutability)
+            } else {
+                None
+            }
+        })
+    }
+
     pub fn params(self, db: &dyn HirDatabase) -> Vec<TypeRef> {
         db.function_data(self.id).params.clone()
     }