Merge #3220

3220: Fix clippy warnings, update Cargo.toml versions r=matklad a=SomeoneToIgnore

In the `cargo xtask lint` ouptut, there were two interesting Clippy warnings that might be interesting to investigate further:

* warning: this argument (4 byte) is passed by reference, but would be more efficient if passed by value (limit: 8 byte)

* warning: large size difference between variants

Co-authored-by: Kirill Bulatov <[email protected]>

2 files changed, 22 insertions, 29 deletions

diff --git a/crates/ra_hir/src/code_model.rs b/crates/ra_hir/src/code_model.rs
index b6adb7589..1bdcda069 100644
--- a/crates/ra_hir/src/code_model.rs
+++ b/crates/ra_hir/src/code_model.rs
@@ -283,7 +283,7 @@ impl StructField {
         };
         let substs = Substs::type_params(db, generic_def_id);
         let ty = db.field_types(var_id)[self.id].clone().subst(&substs);
-        Type::new(db, self.parent.module(db).id.krate.into(), var_id, ty)
+        Type::new(db, self.parent.module(db).id.krate, var_id, ty)
     }
 
     pub fn parent_def(&self, _db: &impl HirDatabase) -> VariantDef {
@@ -315,11 +315,11 @@ impl Struct {
     }
 
     pub fn name(self, db: &impl DefDatabase) -> Name {
-        db.struct_data(self.id.into()).name.clone()
+        db.struct_data(self.id).name.clone()
     }
 
     pub fn fields(self, db: &impl HirDatabase) -> Vec<StructField> {
-        db.struct_data(self.id.into())
+        db.struct_data(self.id)
             .variant_data
             .fields()
             .iter()
@@ -332,7 +332,7 @@ impl Struct {
     }
 
     fn variant_data(self, db: &impl DefDatabase) -> Arc<VariantData> {
-        db.struct_data(self.id.into()).variant_data.clone()
+        db.struct_data(self.id).variant_data.clone()
     }
 }
 
@@ -988,20 +988,17 @@ impl Type {
 
     pub fn fields(&self, db: &impl HirDatabase) -> Vec<(StructField, Type)> {
         if let Ty::Apply(a_ty) = &self.ty.value {
-            match a_ty.ctor {
-                TypeCtor::Adt(AdtId::StructId(s)) => {
-                    let var_def = s.into();
-                    return db
-                        .field_types(var_def)
-                        .iter()
-                        .map(|(local_id, ty)| {
-                            let def = StructField { parent: var_def.into(), id: local_id };
-                            let ty = ty.clone().subst(&a_ty.parameters);
-                            (def, self.derived(ty))
-                        })
-                        .collect();
-                }
-                _ => {}
+            if let TypeCtor::Adt(AdtId::StructId(s)) = a_ty.ctor {
+                let var_def = s.into();
+                return db
+                    .field_types(var_def)
+                    .iter()
+                    .map(|(local_id, ty)| {
+                        let def = StructField { parent: var_def.into(), id: local_id };
+                        let ty = ty.clone().subst(&a_ty.parameters);
+                        (def, self.derived(ty))
+                    })
+                    .collect();
             }
         };
         Vec::new()
@@ -1010,14 +1007,11 @@ impl Type {
     pub fn tuple_fields(&self, _db: &impl HirDatabase) -> Vec<Type> {
         let mut res = Vec::new();
         if let Ty::Apply(a_ty) = &self.ty.value {
-            match a_ty.ctor {
-                TypeCtor::Tuple { .. } => {
-                    for ty in a_ty.parameters.iter() {
-                        let ty = ty.clone();
-                        res.push(self.derived(ty));
-                    }
+            if let TypeCtor::Tuple { .. } = a_ty.ctor {
+                for ty in a_ty.parameters.iter() {
+                    let ty = ty.clone();
+                    res.push(self.derived(ty));
                 }
-                _ => {}
             }
         };
         res
@@ -1049,7 +1043,7 @@ impl Type {
         // FIXME check that?
         let canonical = Canonical { value: self.ty.value.clone(), num_vars: 0 };
         let environment = self.ty.environment.clone();
-        let ty = InEnvironment { value: canonical, environment: environment.clone() };
+        let ty = InEnvironment { value: canonical, environment };
         autoderef(db, Some(self.krate), ty)
             .map(|canonical| canonical.value)
             .map(move |ty| self.derived(ty))
diff --git a/crates/ra_hir/src/source_analyzer.rs b/crates/ra_hir/src/source_analyzer.rs
index 94d5b4cfd..efa3f8a79 100644
--- a/crates/ra_hir/src/source_analyzer.rs
+++ b/crates/ra_hir/src/source_analyzer.rs
@@ -361,9 +361,8 @@ impl SourceAnalyzer {
         db: &impl HirDatabase,
         macro_call: InFile<&ast::MacroCall>,
     ) -> Option<Expansion> {
-        let macro_call_id = macro_call.as_call_id(db, |path| {
-            self.resolver.resolve_path_as_macro(db, &path).map(|it| it.into())
-        })?;
+        let macro_call_id =
+            macro_call.as_call_id(db, |path| self.resolver.resolve_path_as_macro(db, &path))?;
         Some(Expansion { macro_call_id })
     }
 }