9 files changed, 20 insertions, 28 deletions

diff --git a/crates/assists/src/assist_context.rs b/crates/assists/src/assist_context.rs
index 321fe77f3..8d93edba2 100644
--- a/crates/assists/src/assist_context.rs
+++ b/crates/assists/src/assist_context.rs
@@ -2,7 +2,6 @@
 
 use std::mem;
 
-use algo::find_covering_element;
 use hir::Semantics;
 use ide_db::{
     base_db::{AnchoredPathBuf, FileId, FileRange},
@@ -94,11 +93,11 @@ impl<'a> AssistContext<'a> {
         self.sema.find_node_at_offset_with_descend(self.source_file.syntax(), self.offset())
     }
     pub(crate) fn covering_element(&self) -> SyntaxElement {
-        find_covering_element(self.source_file.syntax(), self.frange.range)
+        self.source_file.syntax().covering_element(self.frange.range)
     }
     // FIXME: remove
     pub(crate) fn covering_node_for_range(&self, range: TextRange) -> SyntaxElement {
-        find_covering_element(self.source_file.syntax(), range)
+        self.source_file.syntax().covering_element(range)
     }
 }
 
diff --git a/crates/completion/src/context.rs b/crates/completion/src/context.rs
index d809460e2..b1e8eba85 100644
--- a/crates/completion/src/context.rs
+++ b/crates/completion/src/context.rs
@@ -4,10 +4,8 @@ use hir::{Local, ScopeDef, Semantics, SemanticsScope, Type};
 use ide_db::base_db::{FilePosition, SourceDatabase};
 use ide_db::{call_info::ActiveParameter, RootDatabase};
 use syntax::{
-    algo::{find_covering_element, find_node_at_offset},
-    ast, match_ast, AstNode, NodeOrToken,
-    SyntaxKind::*,
-    SyntaxNode, SyntaxToken, TextRange, TextSize,
+    algo::find_node_at_offset, ast, match_ast, AstNode, NodeOrToken, SyntaxKind::*, SyntaxNode,
+    SyntaxToken, TextRange, TextSize,
 };
 use test_utils::mark;
 use text_edit::Indel;
@@ -513,7 +511,7 @@ impl<'a> CompletionContext<'a> {
 }
 
 fn find_node_with_range<N: AstNode>(syntax: &SyntaxNode, range: TextRange) -> Option<N> {
-    find_covering_element(syntax, range).ancestors().find_map(N::cast)
+    syntax.covering_element(range).ancestors().find_map(N::cast)
 }
 
 fn is_node<N: AstNode>(node: &SyntaxNode) -> bool {
diff --git a/crates/hir_expand/src/db.rs b/crates/hir_expand/src/db.rs
index c62086390..467516eb7 100644
--- a/crates/hir_expand/src/db.rs
+++ b/crates/hir_expand/src/db.rs
@@ -118,7 +118,7 @@ pub fn expand_hypothetical(
         parse_macro_with_arg(db, macro_file, Some(std::sync::Arc::new((tt, tmap_1)))).value?;
     let token_id = macro_def.0.map_id_down(token_id);
     let range = tmap_2.range_by_token(token_id)?.by_kind(token_to_map.kind())?;
-    let token = syntax::algo::find_covering_element(&node.syntax_node(), range).into_token()?;
+    let token = node.syntax_node().covering_element(range).into_token()?;
     Some((node.syntax_node(), token))
 }
 
diff --git a/crates/hir_expand/src/lib.rs b/crates/hir_expand/src/lib.rs
index 3fa1b1d77..e388ddacc 100644
--- a/crates/hir_expand/src/lib.rs
+++ b/crates/hir_expand/src/lib.rs
@@ -22,7 +22,7 @@ use std::sync::Arc;
 
 use base_db::{impl_intern_key, salsa, CrateId, FileId, FileRange};
 use syntax::{
-    algo::{self, skip_trivia_token},
+    algo::skip_trivia_token,
     ast::{self, AstNode},
     Direction, SyntaxNode, SyntaxToken, TextRange, TextSize,
 };
@@ -335,7 +335,7 @@ impl ExpansionInfo {
 
         let range = self.exp_map.range_by_token(token_id)?.by_kind(token.value.kind())?;
 
-        let token = algo::find_covering_element(&self.expanded.value, range).into_token()?;
+        let token = self.expanded.value.covering_element(range).into_token()?;
 
         Some(self.expanded.with_value(token))
     }
@@ -360,8 +360,8 @@ impl ExpansionInfo {
         };
 
         let range = token_map.range_by_token(token_id)?.by_kind(token.value.kind())?;
-        let token = algo::find_covering_element(&tt.value, range + tt.value.text_range().start())
-            .into_token()?;
+        let token =
+            tt.value.covering_element(range + tt.value.text_range().start()).into_token()?;
         Some((tt.with_value(token), origin))
     }
 }
diff --git a/crates/ide/src/extend_selection.rs b/crates/ide/src/extend_selection.rs
index 56418c960..17a540972 100644
--- a/crates/ide/src/extend_selection.rs
+++ b/crates/ide/src/extend_selection.rs
@@ -3,7 +3,7 @@ use std::iter::successors;
 use hir::Semantics;
 use ide_db::RootDatabase;
 use syntax::{
-    algo::{self, find_covering_element, skip_trivia_token},
+    algo::{self, skip_trivia_token},
     ast::{self, AstNode, AstToken},
     Direction, NodeOrToken,
     SyntaxKind::{self, *},
@@ -76,7 +76,7 @@ fn try_extend_selection(
         };
         return Some(leaf_range);
     };
-    let node = match find_covering_element(root, range) {
+    let node = match root.covering_element(range) {
         NodeOrToken::Token(token) => {
             if token.text_range() != range {
                 return Some(token.text_range());
@@ -120,7 +120,7 @@ fn extend_tokens_from_range(
     macro_call: ast::MacroCall,
     original_range: TextRange,
 ) -> Option<TextRange> {
-    let src = find_covering_element(&macro_call.syntax(), original_range);
+    let src = macro_call.syntax().covering_element(original_range);
     let (first_token, last_token) = match src {
         NodeOrToken::Node(it) => (it.first_token()?, it.last_token()?),
         NodeOrToken::Token(it) => (it.clone(), it),
diff --git a/crates/ide/src/join_lines.rs b/crates/ide/src/join_lines.rs
index 05380f2a1..981467c8d 100644
--- a/crates/ide/src/join_lines.rs
+++ b/crates/ide/src/join_lines.rs
@@ -1,7 +1,7 @@
 use assists::utils::extract_trivial_expression;
 use itertools::Itertools;
 use syntax::{
-    algo::{find_covering_element, non_trivia_sibling},
+    algo::non_trivia_sibling,
     ast::{self, AstNode, AstToken},
     Direction, NodeOrToken, SourceFile,
     SyntaxKind::{self, USE_TREE, WHITESPACE},
@@ -31,7 +31,7 @@ pub(crate) fn join_lines(file: &SourceFile, range: TextRange) -> TextEdit {
         range
     };
 
-    let node = match find_covering_element(file.syntax(), range) {
+    let node = match file.syntax().covering_element(range) {
         NodeOrToken::Node(node) => node,
         NodeOrToken::Token(token) => token.parent(),
     };
diff --git a/crates/ide/src/syntax_tree.rs b/crates/ide/src/syntax_tree.rs
index 1f26f8043..1d4bac7ad 100644
--- a/crates/ide/src/syntax_tree.rs
+++ b/crates/ide/src/syntax_tree.rs
@@ -1,7 +1,7 @@
 use ide_db::base_db::{FileId, SourceDatabase};
 use ide_db::RootDatabase;
 use syntax::{
-    algo, AstNode, NodeOrToken, SourceFile, SyntaxKind::STRING, SyntaxToken, TextRange, TextSize,
+    AstNode, NodeOrToken, SourceFile, SyntaxKind::STRING, SyntaxToken, TextRange, TextSize,
 };
 
 // Feature: Show Syntax Tree
@@ -21,7 +21,7 @@ pub(crate) fn syntax_tree(
 ) -> String {
     let parse = db.parse(file_id);
     if let Some(text_range) = text_range {
-        let node = match algo::find_covering_element(parse.tree().syntax(), text_range) {
+        let node = match parse.tree().syntax().covering_element(text_range) {
             NodeOrToken::Node(node) => node,
             NodeOrToken::Token(token) => {
                 if let Some(tree) = syntax_tree_for_string(&token, text_range) {
diff --git a/crates/syntax/src/algo.rs b/crates/syntax/src/algo.rs
index 384d031e7..1456270d0 100644
--- a/crates/syntax/src/algo.rs
+++ b/crates/syntax/src/algo.rs
@@ -45,7 +45,7 @@ pub fn find_node_at_offset<N: AstNode>(syntax: &SyntaxNode, offset: TextSize) ->
 }
 
 pub fn find_node_at_range<N: AstNode>(syntax: &SyntaxNode, range: TextRange) -> Option<N> {
-    find_covering_element(syntax, range).ancestors().find_map(N::cast)
+    syntax.covering_element(range).ancestors().find_map(N::cast)
 }
 
 /// Skip to next non `trivia` token
@@ -74,10 +74,6 @@ pub fn non_trivia_sibling(element: SyntaxElement, direction: Direction) -> Optio
     }
 }
 
-pub fn find_covering_element(root: &SyntaxNode, range: TextRange) -> SyntaxElement {
-    root.covering_element(range)
-}
-
 pub fn least_common_ancestor(u: &SyntaxNode, v: &SyntaxNode) -> Option<SyntaxNode> {
     if u == v {
         return Some(u.clone());
diff --git a/crates/syntax/src/parsing/reparsing.rs b/crates/syntax/src/parsing/reparsing.rs
index 78eaf3410..76f01084c 100644
--- a/crates/syntax/src/parsing/reparsing.rs
+++ b/crates/syntax/src/parsing/reparsing.rs
@@ -10,7 +10,6 @@ use parser::Reparser;
 use text_edit::Indel;
 
 use crate::{
-    algo,
     parsing::{
         lexer::{lex_single_syntax_kind, tokenize, Token},
         text_token_source::TextTokenSource,
@@ -41,7 +40,7 @@ fn reparse_token<'node>(
     root: &'node SyntaxNode,
     edit: &Indel,
 ) -> Option<(GreenNode, Vec<SyntaxError>, TextRange)> {
-    let prev_token = algo::find_covering_element(root, edit.delete).as_token()?.clone();
+    let prev_token = root.covering_element(edit.delete).as_token()?.clone();
     let prev_token_kind = prev_token.kind();
     match prev_token_kind {
         WHITESPACE | COMMENT | IDENT | STRING => {
@@ -124,7 +123,7 @@ fn is_contextual_kw(text: &str) -> bool {
 }
 
 fn find_reparsable_node(node: &SyntaxNode, range: TextRange) -> Option<(SyntaxNode, Reparser)> {
-    let node = algo::find_covering_element(node, range);
+    let node = node.covering_element(range);
 
     let mut ancestors = match node {
         NodeOrToken::Token(it) => it.parent().ancestors(),