From e1d6b7f7c48d82c3c03550bc702e64cd7d079c99 Mon Sep 17 00:00:00 2001
From: Aleksey Kladov <aleksey.kladov@gmail.com>
Date: Sat, 11 Jul 2020 14:50:00 +0200
Subject: Use dedicated semantic highlight tag for parameters

closes #5106
---
 crates/ra_hir/src/code_model.rs | 15 ++++++++++++++-
 1 file changed, 14 insertions(+), 1 deletion(-)

(limited to 'crates/ra_hir')

diff --git a/crates/ra_hir/src/code_model.rs b/crates/ra_hir/src/code_model.rs
index 1b3525011..04fd335fe 100644
--- a/crates/ra_hir/src/code_model.rs
+++ b/crates/ra_hir/src/code_model.rs
@@ -33,7 +33,10 @@ use hir_ty::{
 };
 use ra_db::{CrateId, Edition, FileId};
 use ra_prof::profile;
-use ra_syntax::ast::{self, AttrsOwner, NameOwner};
+use ra_syntax::{
+    ast::{self, AttrsOwner, NameOwner},
+    AstNode,
+};
 use rustc_hash::FxHashSet;
 
 use crate::{
@@ -955,6 +958,16 @@ pub struct Local {
 }
 
 impl Local {
+    pub fn is_param(self, db: &dyn HirDatabase) -> bool {
+        let src = self.source(db);
+        match src.value {
+            Either::Left(bind_pat) => {
+                bind_pat.syntax().ancestors().any(|it| ast::Param::can_cast(it.kind()))
+            }
+            Either::Right(_self_param) => true,
+        }
+    }
+
     // FIXME: why is this an option? It shouldn't be?
     pub fn name(self, db: &dyn HirDatabase) -> Option<Name> {
         let body = db.body(self.parent.into());
-- 
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