streamline API

crates/ra_ide_api/src/completion/completion_context.rs

@@ -1,6 +1,6 @@
 use hir::source_binder;
 use ra_syntax::{
-    algo::{find_covering_element, find_node_at_offset, find_token_at_offset},
+    algo::{find_covering_element, find_node_at_offset},
     ast, AstNode, Parse, SourceFile,
     SyntaxKind::*,
     SyntaxNode, SyntaxToken, TextRange, TextUnit,
@@ -48,7 +48,7 @@ impl<'a> CompletionContext<'a> {
     ) -> Option<CompletionContext<'a>> {
         let module = source_binder::module_from_position(db, position);
         let token =
-            find_token_at_offset(original_parse.tree().syntax(), position.offset).left_biased()?;
+            original_parse.tree().syntax().token_at_offset(position.offset).left_biased()?;
         let analyzer =
             hir::SourceAnalyzer::new(db, position.file_id, &token.parent(), Some(position.offset));
         let mut ctx = CompletionContext {

crates/ra_ide_api/src/extend_selection.rs

@@ -1,10 +1,10 @@
 use ra_db::SourceDatabase;
 use ra_syntax::{
-    algo::{find_covering_element, find_token_at_offset, TokenAtOffset},
+    algo::find_covering_element,
     ast::{self, AstNode, AstToken},
     Direction, NodeOrToken,
     SyntaxKind::*,
-    SyntaxNode, SyntaxToken, TextRange, TextUnit, T,
+    SyntaxNode, SyntaxToken, TextRange, TextUnit, TokenAtOffset, T,
 };
 
 use crate::{db::RootDatabase, FileRange};
@@ -34,7 +34,7 @@ fn try_extend_selection(root: &SyntaxNode, range: TextRange) -> Option<TextRange
 
     if range.is_empty() {
         let offset = range.start();
-        let mut leaves = find_token_at_offset(root, offset);
+        let mut leaves = root.token_at_offset(offset);
         if leaves.clone().all(|it| it.kind() == WHITESPACE) {
             return Some(extend_ws(root, leaves.next()?, offset));
         }

crates/ra_ide_api/src/goto_type_definition.rs

@@ -1,5 +1,5 @@
 use ra_db::SourceDatabase;
-use ra_syntax::{algo::find_token_at_offset, ast, AstNode};
+use ra_syntax::{ast, AstNode};
 
 use crate::{db::RootDatabase, FilePosition, NavigationTarget, RangeInfo};
 
@@ -9,7 +9,7 @@ pub(crate) fn goto_type_definition(
 ) -> Option<RangeInfo<Vec<NavigationTarget>>> {
     let parse = db.parse(position.file_id);
 
-    let node = find_token_at_offset(parse.tree().syntax(), position.offset).find_map(|token| {
+    let node = parse.tree().syntax().token_at_offset(position.offset).find_map(|token| {
         token
             .parent()
             .ancestors()

crates/ra_ide_api/src/matching_brace.rs

@@ -1,9 +1,11 @@
-use ra_syntax::{algo::find_token_at_offset, ast::AstNode, SourceFile, SyntaxKind, TextUnit, T};
+use ra_syntax::{ast::AstNode, SourceFile, SyntaxKind, TextUnit, T};
 
 pub fn matching_brace(file: &SourceFile, offset: TextUnit) -> Option<TextUnit> {
     const BRACES: &[SyntaxKind] =
         &[T!['{'], T!['}'], T!['['], T![']'], T!['('], T![')'], T![<], T![>]];
-    let (brace_node, brace_idx) = find_token_at_offset(file.syntax(), offset)
+    let (brace_node, brace_idx) = file
+        .syntax()
+        .token_at_offset(offset)
         .filter_map(|node| {
             let idx = BRACES.iter().position(|&brace| brace == node.kind())?;
             Some((node, idx))

crates/ra_ide_api/src/typing.rs

@@ -1,11 +1,11 @@
 use ra_db::{FilePosition, SourceDatabase};
 use ra_fmt::leading_indent;
 use ra_syntax::{
-    algo::{find_node_at_offset, find_token_at_offset, TokenAtOffset},
+    algo::find_node_at_offset,
     ast::{self, AstToken},
     AstNode, SmolStr, SourceFile,
     SyntaxKind::*,
-    SyntaxToken, TextRange, TextUnit,
+    SyntaxToken, TextRange, TextUnit, TokenAtOffset,
 };
 use ra_text_edit::{TextEdit, TextEditBuilder};
 
@@ -14,7 +14,9 @@ use crate::{db::RootDatabase, SourceChange, SourceFileEdit};
 pub(crate) fn on_enter(db: &RootDatabase, position: FilePosition) -> Option<SourceChange> {
     let parse = db.parse(position.file_id);
     let file = parse.tree();
-    let comment = find_token_at_offset(file.syntax(), position.offset)
+    let comment = file
+        .syntax()
+        .token_at_offset(position.offset)
         .left_biased()
         .and_then(ast::Comment::cast)?;
 
@@ -45,7 +47,7 @@ pub(crate) fn on_enter(db: &RootDatabase, position: FilePosition) -> Option<Sour
 }
 
 fn node_indent(file: &SourceFile, token: &SyntaxToken) -> Option<SmolStr> {
-    let ws = match find_token_at_offset(file.syntax(), token.text_range().start()) {
+    let ws = match file.syntax().token_at_offset(token.text_range().start()) {
         TokenAtOffset::Between(l, r) => {
             assert!(r == *token);
             l
@@ -91,7 +93,10 @@ pub(crate) fn on_dot_typed(db: &RootDatabase, position: FilePosition) -> Option<
     let parse = db.parse(position.file_id);
     assert_eq!(parse.tree().syntax().text().char_at(position.offset), Some('.'));
 
-    let whitespace = find_token_at_offset(parse.tree().syntax(), position.offset)
+    let whitespace = parse
+        .tree()
+        .syntax()
+        .token_at_offset(position.offset)
         .left_biased()
         .and_then(ast::Whitespace::cast)?;