From f9bb398cc50d2cad543cd5d2d135db5574ba3a6c Mon Sep 17 00:00:00 2001
From: kjeremy <kjeremy@gmail.com>
Date: Tue, 16 Feb 2021 10:55:34 -0500
Subject: Fix a few clippy::perf warnings

---
 crates/ide/src/doc_links.rs         | 2 +-
 crates/ide/src/goto_definition.rs   | 2 +-
 crates/ide/src/references/rename.rs | 6 ++++--
 crates/ide/src/view_hir.rs          | 2 +-
 4 files changed, 7 insertions(+), 5 deletions(-)

(limited to 'crates/ide')

diff --git a/crates/ide/src/doc_links.rs b/crates/ide/src/doc_links.rs
index f94adec9b..7bdd3cca3 100644
--- a/crates/ide/src/doc_links.rs
+++ b/crates/ide/src/doc_links.rs
@@ -232,7 +232,7 @@ fn rewrite_intra_doc_link(
         let items = t.items(db);
         if let Some(field_or_assoc_item) = items.iter().find_map(|assoc_item| {
             if let Some(name) = assoc_item.name(db) {
-                if link.to_string() == format!("{}::{}", canonical_path, name) {
+                if *link == format!("{}::{}", canonical_path, name) {
                     return Some(FieldOrAssocItem::AssocItem(*assoc_item));
                 }
             }
diff --git a/crates/ide/src/goto_definition.rs b/crates/ide/src/goto_definition.rs
index e86ae2a18..abed1969e 100644
--- a/crates/ide/src/goto_definition.rs
+++ b/crates/ide/src/goto_definition.rs
@@ -31,7 +31,7 @@ pub(crate) fn goto_definition(
     let original_token = pick_best(file.token_at_offset(position.offset))?;
     let token = sema.descend_into_macros(original_token.clone());
     let parent = token.parent();
-    if let Some(comment) = ast::Comment::cast(token.clone()) {
+    if let Some(comment) = ast::Comment::cast(token) {
         let nav = def_for_doc_comment(&sema, position, &comment)?.try_to_nav(db)?;
         return Some(RangeInfo::new(original_token.text_range(), vec![nav]));
     }
diff --git a/crates/ide/src/references/rename.rs b/crates/ide/src/references/rename.rs
index 08f16b54d..a4b320227 100644
--- a/crates/ide/src/references/rename.rs
+++ b/crates/ide/src/references/rename.rs
@@ -342,8 +342,10 @@ fn rename_to_self(sema: &Semantics<RootDatabase>, local: hir::Local) -> RenameRe
 
     // FIXME: reimplement this on the hir instead
     // as of the time of this writing params in hir don't keep their names
-    let fn_ast =
-        fn_def.source(sema.db).ok_or(format_err!("Cannot rename non-param local to self"))?.value;
+    let fn_ast = fn_def
+        .source(sema.db)
+        .ok_or_else(|| format_err!("Cannot rename non-param local to self"))?
+        .value;
 
     let first_param_range = fn_ast
         .param_list()
diff --git a/crates/ide/src/view_hir.rs b/crates/ide/src/view_hir.rs
index cfcfb7cfb..f8f3fae3d 100644
--- a/crates/ide/src/view_hir.rs
+++ b/crates/ide/src/view_hir.rs
@@ -11,7 +11,7 @@ use syntax::{algo::find_node_at_offset, ast, AstNode};
 // | VS Code | **Rust Analyzer: View Hir**
 // |===
 pub(crate) fn view_hir(db: &RootDatabase, position: FilePosition) -> String {
-    body_hir(db, position).unwrap_or("Not inside a function body".to_string())
+    body_hir(db, position).unwrap_or_else(|| "Not inside a function body".to_string())
 }
 
 fn body_hir(db: &RootDatabase, position: FilePosition) -> Option<String> {
-- 
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