Merge pull request #19056 from Giga-Bowser/fix-syntax-tree-crlf

fix: Properly handle CRLF line endings in the syntax tree view

4 files changed, 181 insertions, 76 deletions

diff --git a/src/tools/rust-analyzer/crates/ide/src/view_syntax_tree.rs b/src/tools/rust-analyzer/crates/ide/src/view_syntax_tree.rs
index 218ee15a7dd..80c3a40e71e 100644
--- a/src/tools/rust-analyzer/crates/ide/src/view_syntax_tree.rs
+++ b/src/tools/rust-analyzer/crates/ide/src/view_syntax_tree.rs
@@ -1,11 +1,15 @@
 use hir::Semantics;
-use ide_db::{FileId, RootDatabase};
-use span::TextRange;
+use ide_db::{
+    line_index::{LineCol, LineIndex},
+    FileId, LineIndexDatabase, RootDatabase,
+};
+use span::{TextRange, TextSize};
 use stdx::format_to;
 use syntax::{
     ast::{self, IsString},
     AstNode, AstToken, NodeOrToken, SourceFile, SyntaxNode, SyntaxToken, WalkEvent,
 };
+use triomphe::Arc;
 
 // Feature: Show Syntax Tree
 //
@@ -18,24 +22,31 @@ use syntax::{
 // |===
 pub(crate) fn view_syntax_tree(db: &RootDatabase, file_id: FileId) -> String {
     let sema = Semantics::new(db);
+    let line_index = db.line_index(file_id);
     let parse = sema.parse_guess_edition(file_id);
-    syntax_node_to_json(parse.syntax(), None)
+
+    let ctx = SyntaxTreeCtx { line_index, in_string: None };
+
+    syntax_node_to_json(parse.syntax(), &ctx)
 }
 
-fn syntax_node_to_json(node: &SyntaxNode, ctx: Option<InStringCtx>) -> String {
+fn syntax_node_to_json(node: &SyntaxNode, ctx: &SyntaxTreeCtx) -> String {
     let mut result = String::new();
     for event in node.preorder_with_tokens() {
         match event {
             WalkEvent::Enter(it) => {
                 let kind = it.kind();
-                let (text_range, inner_range_str) = match &ctx {
-                    Some(ctx) => {
+                let (text_range, inner_range_str) = match &ctx.in_string {
+                    Some(in_string) => {
+                        let start_pos = TextPosition::new(&ctx.line_index, it.text_range().start());
+                        let end_pos = TextPosition::new(&ctx.line_index, it.text_range().end());
+
                         let inner_start: u32 = it.text_range().start().into();
-                        let inner_end: u32 = it.text_range().end().into();
+                        let inner_end: u32 = it.text_range().start().into();
 
-                        let mut true_start = inner_start + ctx.offset;
-                        let mut true_end = inner_end + ctx.offset;
-                        for pos in &ctx.marker_positions {
+                        let mut true_start = inner_start + in_string.offset;
+                        let mut true_end = inner_end + in_string.offset;
+                        for pos in &in_string.marker_positions {
                             if *pos >= inner_end {
                                 break;
                             }
@@ -48,39 +59,33 @@ fn syntax_node_to_json(node: &SyntaxNode, ctx: Option<InStringCtx>) -> String {
 
                         let true_range = TextRange::new(true_start.into(), true_end.into());
 
-                        (
-                            true_range,
-                            format!(
-                                r#","istart":{:?},"iend":{:?}"#,
-                                it.text_range().start(),
-                                it.text_range().end()
-                            ),
-                        )
+                        (true_range, format!(r#","istart":{start_pos},"iend":{end_pos}"#,))
                     }
                     None => (it.text_range(), "".to_owned()),
                 };
-                let start = text_range.start();
-                let end = text_range.end();
+
+                let start = TextPosition::new(&ctx.line_index, text_range.start());
+                let end = TextPosition::new(&ctx.line_index, text_range.end());
 
                 match it {
                     NodeOrToken::Node(_) => {
                         format_to!(
                             result,
-                            r#"{{"type":"Node","kind":"{kind:?}","start":{start:?},"end":{end:?}{inner_range_str},"children":["#
+                            r#"{{"type":"Node","kind":"{kind:?}","start":{start},"end":{end}{inner_range_str},"children":["#
                         );
                     }
                     NodeOrToken::Token(token) => {
                         let comma = if token.next_sibling_or_token().is_some() { "," } else { "" };
-                        match parse_rust_string(token) {
+                        match parse_rust_string(token, ctx) {
                             Some(parsed) => {
                                 format_to!(
                                     result,
-                                    r#"{{"type":"Node","kind":"{kind:?}","start":{start:?},"end":{end:?}{inner_range_str},"children":[{parsed}]}}{comma}"#
+                                    r#"{{"type":"Node","kind":"{kind:?}","start":{start},"end":{end}{inner_range_str},"children":[{parsed}]}}{comma}"#
                                 );
                             }
                             None => format_to!(
                                 result,
-                                r#"{{"type":"Token","kind":"{kind:?}","start":{start:?},"end":{end:?}{inner_range_str}}}{comma}"#
+                                r#"{{"type":"Token","kind":"{kind:?}","start":{start},"end":{end}{inner_range_str}}}{comma}"#
                             ),
                         }
                     }
@@ -99,7 +104,26 @@ fn syntax_node_to_json(node: &SyntaxNode, ctx: Option<InStringCtx>) -> String {
     result
 }
 
-fn parse_rust_string(token: SyntaxToken) -> Option<String> {
+struct TextPosition {
+    offset: TextSize,
+    line: u32,
+    col: u32,
+}
+
+impl std::fmt::Display for TextPosition {
+    fn fmt(&self, f: &mut std::fmt::Formatter<'_>) -> std::fmt::Result {
+        write!(f, "[{:?},{},{}]", self.offset, self.line, self.col)
+    }
+}
+
+impl TextPosition {
+    pub(crate) fn new(line_index: &LineIndex, offset: TextSize) -> Self {
+        let LineCol { line, col } = line_index.line_col(offset);
+        Self { offset, line, col }
+    }
+}
+
+fn parse_rust_string(token: SyntaxToken, ctx: &SyntaxTreeCtx) -> Option<String> {
     let string_node = ast::String::cast(token)?;
     let text = string_node.value().ok()?;
 
@@ -128,13 +152,20 @@ fn parse_rust_string(token: SyntaxToken) -> Option<String> {
         return None;
     }
 
-    Some(syntax_node_to_json(
-        node,
-        Some(InStringCtx {
+    let ctx = SyntaxTreeCtx {
+        line_index: ctx.line_index.clone(),
+        in_string: Some(InStringCtx {
             offset: string_node.text_range_between_quotes()?.start().into(),
             marker_positions,
         }),
-    ))
+    };
+
+    Some(syntax_node_to_json(node, &ctx))
+}
+
+struct SyntaxTreeCtx {
+    line_index: Arc<LineIndex>,
+    in_string: Option<InStringCtx>,
 }
 
 struct InStringCtx {
@@ -160,7 +191,7 @@ mod tests {
         check(
             r#"fn foo() {}"#,
             expect![[
-                r#"{"type":"Node","kind":"SOURCE_FILE","start":0,"end":11,"children":[{"type":"Node","kind":"FN","start":0,"end":11,"children":[{"type":"Token","kind":"FN_KW","start":0,"end":2},{"type":"Token","kind":"WHITESPACE","start":2,"end":3},{"type":"Node","kind":"NAME","start":3,"end":6,"children":[{"type":"Token","kind":"IDENT","start":3,"end":6}]},{"type":"Node","kind":"PARAM_LIST","start":6,"end":8,"children":[{"type":"Token","kind":"L_PAREN","start":6,"end":7},{"type":"Token","kind":"R_PAREN","start":7,"end":8}]},{"type":"Token","kind":"WHITESPACE","start":8,"end":9},{"type":"Node","kind":"BLOCK_EXPR","start":9,"end":11,"children":[{"type":"Node","kind":"STMT_LIST","start":9,"end":11,"children":[{"type":"Token","kind":"L_CURLY","start":9,"end":10},{"type":"Token","kind":"R_CURLY","start":10,"end":11}]}]}]}]}"#
+                r#"{"type":"Node","kind":"SOURCE_FILE","start":[0,0,0],"end":[11,0,11],"children":[{"type":"Node","kind":"FN","start":[0,0,0],"end":[11,0,11],"children":[{"type":"Token","kind":"FN_KW","start":[0,0,0],"end":[2,0,2]},{"type":"Token","kind":"WHITESPACE","start":[2,0,2],"end":[3,0,3]},{"type":"Node","kind":"NAME","start":[3,0,3],"end":[6,0,6],"children":[{"type":"Token","kind":"IDENT","start":[3,0,3],"end":[6,0,6]}]},{"type":"Node","kind":"PARAM_LIST","start":[6,0,6],"end":[8,0,8],"children":[{"type":"Token","kind":"L_PAREN","start":[6,0,6],"end":[7,0,7]},{"type":"Token","kind":"R_PAREN","start":[7,0,7],"end":[8,0,8]}]},{"type":"Token","kind":"WHITESPACE","start":[8,0,8],"end":[9,0,9]},{"type":"Node","kind":"BLOCK_EXPR","start":[9,0,9],"end":[11,0,11],"children":[{"type":"Node","kind":"STMT_LIST","start":[9,0,9],"end":[11,0,11],"children":[{"type":"Token","kind":"L_CURLY","start":[9,0,9],"end":[10,0,10]},{"type":"Token","kind":"R_CURLY","start":[10,0,10],"end":[11,0,11]}]}]}]}]}"#
             ]],
         );
 
@@ -173,7 +204,7 @@ fn test() {
     ", "");
 }"#,
             expect![[
-                r#"{"type":"Node","kind":"SOURCE_FILE","start":0,"end":60,"children":[{"type":"Node","kind":"FN","start":0,"end":60,"children":[{"type":"Token","kind":"FN_KW","start":0,"end":2},{"type":"Token","kind":"WHITESPACE","start":2,"end":3},{"type":"Node","kind":"NAME","start":3,"end":7,"children":[{"type":"Token","kind":"IDENT","start":3,"end":7}]},{"type":"Node","kind":"PARAM_LIST","start":7,"end":9,"children":[{"type":"Token","kind":"L_PAREN","start":7,"end":8},{"type":"Token","kind":"R_PAREN","start":8,"end":9}]},{"type":"Token","kind":"WHITESPACE","start":9,"end":10},{"type":"Node","kind":"BLOCK_EXPR","start":10,"end":60,"children":[{"type":"Node","kind":"STMT_LIST","start":10,"end":60,"children":[{"type":"Token","kind":"L_CURLY","start":10,"end":11},{"type":"Token","kind":"WHITESPACE","start":11,"end":16},{"type":"Node","kind":"EXPR_STMT","start":16,"end":58,"children":[{"type":"Node","kind":"MACRO_EXPR","start":16,"end":57,"children":[{"type":"Node","kind":"MACRO_CALL","start":16,"end":57,"children":[{"type":"Node","kind":"PATH","start":16,"end":22,"children":[{"type":"Node","kind":"PATH_SEGMENT","start":16,"end":22,"children":[{"type":"Node","kind":"NAME_REF","start":16,"end":22,"children":[{"type":"Token","kind":"IDENT","start":16,"end":22}]}]}]},{"type":"Token","kind":"BANG","start":22,"end":23},{"type":"Node","kind":"TOKEN_TREE","start":23,"end":57,"children":[{"type":"Token","kind":"L_PAREN","start":23,"end":24},{"type":"Node","kind":"STRING","start":24,"end":52,"children":[{"type":"Node","kind":"SOURCE_FILE","start":25,"end":51,"istart":0,"iend":26,"children":[{"type":"Token","kind":"WHITESPACE","start":25,"end":30,"istart":0,"iend":5},{"type":"Node","kind":"FN","start":30,"end":46,"istart":5,"iend":21,"children":[{"type":"Token","kind":"FN_KW","start":30,"end":32,"istart":5,"iend":7},{"type":"Token","kind":"WHITESPACE","start":32,"end":33,"istart":7,"iend":8},{"type":"Node","kind":"NAME","start":33,"end":36,"istart":8,"iend":11,"children":[{"type":"Token","kind":"IDENT","start":33,"end":36,"istart":8,"iend":11}]},{"type":"Node","kind":"PARAM_LIST","start":36,"end":38,"istart":11,"iend":13,"children":[{"type":"Token","kind":"L_PAREN","start":36,"end":37,"istart":11,"iend":12},{"type":"Token","kind":"R_PAREN","start":37,"end":38,"istart":12,"iend":13}]},{"type":"Token","kind":"WHITESPACE","start":38,"end":39,"istart":13,"iend":14},{"type":"Node","kind":"BLOCK_EXPR","start":39,"end":46,"istart":14,"iend":21,"children":[{"type":"Node","kind":"STMT_LIST","start":39,"end":46,"istart":14,"iend":21,"children":[{"type":"Token","kind":"L_CURLY","start":39,"end":40,"istart":14,"iend":15},{"type":"Token","kind":"WHITESPACE","start":40,"end":45,"istart":15,"iend":20},{"type":"Token","kind":"R_CURLY","start":45,"end":46,"istart":20,"iend":21}]}]}]},{"type":"Token","kind":"WHITESPACE","start":46,"end":51,"istart":21,"iend":26}]}]},{"type":"Token","kind":"COMMA","start":52,"end":53},{"type":"Token","kind":"WHITESPACE","start":53,"end":54},{"type":"Token","kind":"STRING","start":54,"end":56},{"type":"Token","kind":"R_PAREN","start":56,"end":57}]}]}]},{"type":"Token","kind":"SEMICOLON","start":57,"end":58}]},{"type":"Token","kind":"WHITESPACE","start":58,"end":59},{"type":"Token","kind":"R_CURLY","start":59,"end":60}]}]}]}]}"#
+                r#"{"type":"Node","kind":"SOURCE_FILE","start":[0,0,0],"end":[60,5,1],"children":[{"type":"Node","kind":"FN","start":[0,0,0],"end":[60,5,1],"children":[{"type":"Token","kind":"FN_KW","start":[0,0,0],"end":[2,0,2]},{"type":"Token","kind":"WHITESPACE","start":[2,0,2],"end":[3,0,3]},{"type":"Node","kind":"NAME","start":[3,0,3],"end":[7,0,7],"children":[{"type":"Token","kind":"IDENT","start":[3,0,3],"end":[7,0,7]}]},{"type":"Node","kind":"PARAM_LIST","start":[7,0,7],"end":[9,0,9],"children":[{"type":"Token","kind":"L_PAREN","start":[7,0,7],"end":[8,0,8]},{"type":"Token","kind":"R_PAREN","start":[8,0,8],"end":[9,0,9]}]},{"type":"Token","kind":"WHITESPACE","start":[9,0,9],"end":[10,0,10]},{"type":"Node","kind":"BLOCK_EXPR","start":[10,0,10],"end":[60,5,1],"children":[{"type":"Node","kind":"STMT_LIST","start":[10,0,10],"end":[60,5,1],"children":[{"type":"Token","kind":"L_CURLY","start":[10,0,10],"end":[11,0,11]},{"type":"Token","kind":"WHITESPACE","start":[11,0,11],"end":[16,1,4]},{"type":"Node","kind":"EXPR_STMT","start":[16,1,4],"end":[58,4,11],"children":[{"type":"Node","kind":"MACRO_EXPR","start":[16,1,4],"end":[57,4,10],"children":[{"type":"Node","kind":"MACRO_CALL","start":[16,1,4],"end":[57,4,10],"children":[{"type":"Node","kind":"PATH","start":[16,1,4],"end":[22,1,10],"children":[{"type":"Node","kind":"PATH_SEGMENT","start":[16,1,4],"end":[22,1,10],"children":[{"type":"Node","kind":"NAME_REF","start":[16,1,4],"end":[22,1,10],"children":[{"type":"Token","kind":"IDENT","start":[16,1,4],"end":[22,1,10]}]}]}]},{"type":"Token","kind":"BANG","start":[22,1,10],"end":[23,1,11]},{"type":"Node","kind":"TOKEN_TREE","start":[23,1,11],"end":[57,4,10],"children":[{"type":"Token","kind":"L_PAREN","start":[23,1,11],"end":[24,1,12]},{"type":"Node","kind":"STRING","start":[24,1,12],"end":[52,4,5],"children":[{"type":"Node","kind":"SOURCE_FILE","start":[25,1,13],"end":[25,1,13],"istart":[0,0,0],"iend":[26,2,0],"children":[{"type":"Token","kind":"WHITESPACE","start":[25,1,13],"end":[25,1,13],"istart":[0,0,0],"iend":[5,0,5]},{"type":"Node","kind":"FN","start":[30,2,4],"end":[30,2,4],"istart":[5,0,5],"iend":[21,1,9],"children":[{"type":"Token","kind":"FN_KW","start":[30,2,4],"end":[30,2,4],"istart":[5,0,5],"iend":[7,0,7]},{"type":"Token","kind":"WHITESPACE","start":[32,2,6],"end":[32,2,6],"istart":[7,0,7],"iend":[8,0,8]},{"type":"Node","kind":"NAME","start":[33,2,7],"end":[33,2,7],"istart":[8,0,8],"iend":[11,0,11],"children":[{"type":"Token","kind":"IDENT","start":[33,2,7],"end":[33,2,7],"istart":[8,0,8],"iend":[11,0,11]}]},{"type":"Node","kind":"PARAM_LIST","start":[36,2,10],"end":[36,2,10],"istart":[11,0,11],"iend":[13,1,1],"children":[{"type":"Token","kind":"L_PAREN","start":[36,2,10],"end":[36,2,10],"istart":[11,0,11],"iend":[12,1,0]},{"type":"Token","kind":"R_PAREN","start":[37,2,11],"end":[37,2,11],"istart":[12,1,0],"iend":[13,1,1]}]},{"type":"Token","kind":"WHITESPACE","start":[38,2,12],"end":[38,2,12],"istart":[13,1,1],"iend":[14,1,2]},{"type":"Node","kind":"BLOCK_EXPR","start":[39,2,13],"end":[39,2,13],"istart":[14,1,2],"iend":[21,1,9],"children":[{"type":"Node","kind":"STMT_LIST","start":[39,2,13],"end":[39,2,13],"istart":[14,1,2],"iend":[21,1,9],"children":[{"type":"Token","kind":"L_CURLY","start":[39,2,13],"end":[39,2,13],"istart":[14,1,2],"iend":[15,1,3]},{"type":"Token","kind":"WHITESPACE","start":[40,2,14],"end":[40,2,14],"istart":[15,1,3],"iend":[20,1,8]},{"type":"Token","kind":"R_CURLY","start":[45,3,4],"end":[45,3,4],"istart":[20,1,8],"iend":[21,1,9]}]}]}]},{"type":"Token","kind":"WHITESPACE","start":[46,3,5],"end":[46,3,5],"istart":[21,1,9],"iend":[26,2,0]}]}]},{"type":"Token","kind":"COMMA","start":[52,4,5],"end":[53,4,6]},{"type":"Token","kind":"WHITESPACE","start":[53,4,6],"end":[54,4,7]},{"type":"Token","kind":"STRING","start":[54,4,7],"end":[56,4,9]},{"type":"Token","kind":"R_PAREN","start":[56,4,9],"end":[57,4,10]}]}]}]},{"type":"Token","kind":"SEMICOLON","start":[57,4,10],"end":[58,4,11]}]},{"type":"Token","kind":"WHITESPACE","start":[58,4,11],"end":[59,5,0]},{"type":"Token","kind":"R_CURLY","start":[59,5,0],"end":[60,5,1]}]}]}]}]}"#
             ]],
         )
     }
@@ -190,7 +221,7 @@ fn bar() {
     ", "");
 }"#,
             expect![[
-                r#"{"type":"Node","kind":"SOURCE_FILE","start":0,"end":65,"children":[{"type":"Node","kind":"FN","start":0,"end":65,"children":[{"type":"Token","kind":"FN_KW","start":0,"end":2},{"type":"Token","kind":"WHITESPACE","start":2,"end":3},{"type":"Node","kind":"NAME","start":3,"end":7,"children":[{"type":"Token","kind":"IDENT","start":3,"end":7}]},{"type":"Node","kind":"PARAM_LIST","start":7,"end":9,"children":[{"type":"Token","kind":"L_PAREN","start":7,"end":8},{"type":"Token","kind":"R_PAREN","start":8,"end":9}]},{"type":"Token","kind":"WHITESPACE","start":9,"end":10},{"type":"Node","kind":"BLOCK_EXPR","start":10,"end":65,"children":[{"type":"Node","kind":"STMT_LIST","start":10,"end":65,"children":[{"type":"Token","kind":"L_CURLY","start":10,"end":11},{"type":"Token","kind":"WHITESPACE","start":11,"end":16},{"type":"Node","kind":"EXPR_STMT","start":16,"end":63,"children":[{"type":"Node","kind":"MACRO_EXPR","start":16,"end":62,"children":[{"type":"Node","kind":"MACRO_CALL","start":16,"end":62,"children":[{"type":"Node","kind":"PATH","start":16,"end":22,"children":[{"type":"Node","kind":"PATH_SEGMENT","start":16,"end":22,"children":[{"type":"Node","kind":"NAME_REF","start":16,"end":22,"children":[{"type":"Token","kind":"IDENT","start":16,"end":22}]}]}]},{"type":"Token","kind":"BANG","start":22,"end":23},{"type":"Node","kind":"TOKEN_TREE","start":23,"end":62,"children":[{"type":"Token","kind":"L_PAREN","start":23,"end":24},{"type":"Node","kind":"STRING","start":24,"end":57,"children":[{"type":"Node","kind":"SOURCE_FILE","start":25,"end":56,"istart":0,"iend":31,"children":[{"type":"Token","kind":"WHITESPACE","start":25,"end":26,"istart":0,"iend":1},{"type":"Node","kind":"FN","start":26,"end":38,"istart":1,"iend":13,"children":[{"type":"Token","kind":"FN_KW","start":26,"end":28,"istart":1,"iend":3},{"type":"Token","kind":"WHITESPACE","start":28,"end":29,"istart":3,"iend":4},{"type":"Node","kind":"NAME","start":29,"end":32,"istart":4,"iend":7,"children":[{"type":"Token","kind":"IDENT","start":29,"end":32,"istart":4,"iend":7}]},{"type":"Node","kind":"PARAM_LIST","start":32,"end":34,"istart":7,"iend":9,"children":[{"type":"Token","kind":"L_PAREN","start":32,"end":33,"istart":7,"iend":8},{"type":"Token","kind":"R_PAREN","start":33,"end":34,"istart":8,"iend":9}]},{"type":"Token","kind":"WHITESPACE","start":34,"end":35,"istart":9,"iend":10},{"type":"Node","kind":"BLOCK_EXPR","start":35,"end":38,"istart":10,"iend":13,"children":[{"type":"Node","kind":"STMT_LIST","start":35,"end":38,"istart":10,"iend":13,"children":[{"type":"Token","kind":"L_CURLY","start":35,"end":36,"istart":10,"iend":11},{"type":"Token","kind":"WHITESPACE","start":36,"end":37,"istart":11,"iend":12},{"type":"Token","kind":"R_CURLY","start":37,"end":38,"istart":12,"iend":13}]}]}]},{"type":"Token","kind":"WHITESPACE","start":38,"end":39,"istart":13,"iend":14},{"type":"Node","kind":"FN","start":39,"end":51,"istart":14,"iend":26,"children":[{"type":"Token","kind":"FN_KW","start":39,"end":41,"istart":14,"iend":16},{"type":"Token","kind":"WHITESPACE","start":41,"end":42,"istart":16,"iend":17},{"type":"Node","kind":"NAME","start":42,"end":45,"istart":17,"iend":20,"children":[{"type":"Token","kind":"IDENT","start":42,"end":45,"istart":17,"iend":20}]},{"type":"Node","kind":"PARAM_LIST","start":45,"end":47,"istart":20,"iend":22,"children":[{"type":"Token","kind":"L_PAREN","start":45,"end":46,"istart":20,"iend":21},{"type":"Token","kind":"R_PAREN","start":46,"end":47,"istart":21,"iend":22}]},{"type":"Token","kind":"WHITESPACE","start":47,"end":48,"istart":22,"iend":23},{"type":"Node","kind":"BLOCK_EXPR","start":48,"end":51,"istart":23,"iend":26,"children":[{"type":"Node","kind":"STMT_LIST","start":48,"end":51,"istart":23,"iend":26,"children":[{"type":"Token","kind":"L_CURLY","start":48,"end":49,"istart":23,"iend":24},{"type":"Token","kind":"WHITESPACE","start":49,"end":50,"istart":24,"iend":25},{"type":"Token","kind":"R_CURLY","start":50,"end":51,"istart":25,"iend":26}]}]}]},{"type":"Token","kind":"WHITESPACE","start":51,"end":56,"istart":26,"iend":31}]}]},{"type":"Token","kind":"COMMA","start":57,"end":58},{"type":"Token","kind":"WHITESPACE","start":58,"end":59},{"type":"Token","kind":"STRING","start":59,"end":61},{"type":"Token","kind":"R_PAREN","start":61,"end":62}]}]}]},{"type":"Token","kind":"SEMICOLON","start":62,"end":63}]},{"type":"Token","kind":"WHITESPACE","start":63,"end":64},{"type":"Token","kind":"R_CURLY","start":64,"end":65}]}]}]}]}"#
+                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r#"{"type":"Node","kind":"SOURCE_FILE","start":[0,0,0],"end":[63,6,1],"children":[{"type":"Node","kind":"FN","start":[0,0,0],"end":[63,6,1],"children":[{"type":"Token","kind":"FN_KW","start":[0,0,0],"end":[2,0,2]},{"type":"Token","kind":"WHITESPACE","start":[2,0,2],"end":[3,0,3]},{"type":"Node","kind":"NAME","start":[3,0,3],"end":[7,0,7],"children":[{"type":"Token","kind":"IDENT","start":[3,0,3],"end":[7,0,7]}]},{"type":"Node","kind":"PARAM_LIST","start":[7,0,7],"end":[9,0,9],"children":[{"type":"Token","kind":"L_PAREN","start":[7,0,7],"end":[8,0,8]},{"type":"Token","kind":"R_PAREN","start":[8,0,8],"end":[9,0,9]}]},{"type":"Token","kind":"WHITESPACE","start":[9,0,9],"end":[10,0,10]},{"type":"Node","kind":"BLOCK_EXPR","start":[10,0,10],"end":[63,6,1],"children":[{"type":"Node","kind":"STMT_LIST","start":[10,0,10],"end":[63,6,1],"children":[{"type":"Token","kind":"L_CURLY","start":[10,0,10],"end":[11,0,11]},{"type":"Token","kind":"WHITESPACE","start":[11,0,11],"end":[16,1,4]},{"type":"Node","kind":"EXPR_STMT","start":[16,1,4],"end":[61,5,9],"children":[{"type":"Node","kind":"MACRO_EXPR","start":[16,1,4],"end":[60,5,8],"children":[{"type":"Node","kind":"MACRO_CALL","start":[16,1,4],"end":[60,5,8],"children":[{"type":"Node","kind":"PATH","start":[16,1,4],"end":[22,1,10],"children":[{"type":"Node","kind":"PATH_SEGMENT","start":[16,1,4],"end":[22,1,10],"children":[{"type":"Node","kind":"NAME_REF","start":[16,1,4],"end":[22,1,10],"children":[{"type":"Token","kind":"IDENT","start":[16,1,4],"end":[22,1,10]}]}]}]},{"type":"Token","kind":"BANG","start":[22,1,10],"end":[23,1,11]},{"type":"Node","kind":"TOKEN_TREE","start":[23,1,11],"end":[60,5,8],"children":[{"type":"Token","kind":"L_PAREN","start":[23,1,11],"end":[24,1,12]},{"type":"Node","kind":"STRING","start":[24,1,12],"end":[55,5,3],"children":[{"type":"Node","kind":"SOURCE_FILE","start":[27,1,15],"end":[27,1,15],"istart":[0,0,0],"iend":[26,1,14],"children":[{"type":"Token","kind":"WHITESPACE","start":[27,1,15],"end":[27,1,15],"istart":[0,0,0],"iend":[1,0,1]},{"type":"Node","kind":"FN","start":[28,2,0],"end":[28,2,0],"istart":[1,0,1],"iend":[13,1,1],"children":[{"type":"Token","kind":"FN_KW","start":[28,2,0],"end":[28,2,0],"istart":[1,0,1],"iend":[3,0,3]},{"type":"Token","kind":"WHITESPACE","start":[30,2,2],"end":[30,2,2],"istart":[3,0,3],"iend":[4,0,4]},{"type":"Node","kind":"NAME","start":[31,2,3],"end":[31,2,3],"istart":[4,0,4],"iend":[7,0,7],"children":[{"type":"Token","kind":"IDENT","start":[31,2,3],"end":[31,2,3],"istart":[4,0,4],"iend":[7,0,7]}]},{"type":"Node","kind":"PARAM_LIST","start":[34,2,6],"end":[34,2,6],"istart":[7,0,7],"iend":[9,0,9],"children":[{"type":"Token","kind":"L_PAREN","start":[34,2,6],"end":[34,2,6],"istart":[7,0,7],"iend":[8,0,8]},{"type":"Token","kind":"R_PAREN","start":[35,2,7],"end":[35,2,7],"istart":[8,0,8],"iend":[9,0,9]}]},{"type":"Token","kind":"WHITESPACE","start":[36,2,8],"end":[36,2,8],"istart":[9,0,9],"iend":[10,0,10]},{"type":"Node","kind":"BLOCK_EXPR","start":[37,2,9],"end":[37,2,9],"istart":[10,0,10],"iend":[13,1,1],"children":[{"type":"Node","kind":"STMT_LIST","start":[37,2,9],"end":[37,2,9],"istart":[10,0,10],"iend":[13,1,1],"children":[{"type":"Token","kind":"L_CURLY","start":[37,2,9],"end":[37,2,9],"istart":[10,0,10],"iend":[11,0,11]},{"type":"Token","kind":"WHITESPACE","start":[38,2,10],"end":[38,2,10],"istart":[11,0,11],"iend":[12,1,0]},{"type":"Token","kind":"R_CURLY","start":[39,3,0],"end":[39,3,0],"istart":[12,1,0],"iend":[13,1,1]}]}]}]},{"type":"Token","kind":"WHITESPACE","start":[40,3,1],"end":[40,3,1],"istart":[13,1,1],"iend":[14,1,2]},{"type":"Node","kind":"FN","start":[41,4,0],"end":[41,4,0],"istart":[14,1,2],"iend":[26,1,14],"children":[{"type":"Token","kind":"FN_KW","start":[41,4,0],"end":[41,4,0],"istart":[14,1,2],"iend":[16,1,4]},{"type":"Token","kind":"WHITESPACE","start":[43,4,2],"end":[43,4,2],"istart":[16,1,4],"iend":[17,1,5]},{"type":"Node","kind":"NAME","start":[44,4,3],"end":[44,4,3],"istart":[17,1,5],"iend":[20,1,8],"children":[{"type":"Token","kind":"IDENT","start":[44,4,3],"end":[44,4,3],"istart":[17,1,5],"iend":[20,1,8]}]},{"type":"Node","kind":"PARAM_LIST","start":[47,4,6],"end":[47,4,6],"istart":[20,1,8],"iend":[22,1,10],"children":[{"type":"Token","kind":"L_PAREN","start":[47,4,6],"end":[47,4,6],"istart":[20,1,8],"iend":[21,1,9]},{"type":"Token","kind":"R_PAREN","start":[48,4,7],"end":[48,4,7],"istart":[21,1,9],"iend":[22,1,10]}]},{"type":"Token","kind":"WHITESPACE","start":[49,4,8],"end":[49,4,8],"istart":[22,1,10],"iend":[23,1,11]},{"type":"Node","kind":"BLOCK_EXPR","start":[50,4,9],"end":[50,4,9],"istart":[23,1,11],"iend":[26,1,14],"children":[{"type":"Node","kind":"STMT_LIST","start":[50,4,9],"end":[50,4,9],"istart":[23,1,11],"iend":[26,1,14],"children":[{"type":"Token","kind":"L_CURLY","start":[50,4,9],"end":[50,4,9],"istart":[23,1,11],"iend":[24,1,12]},{"type":"Token","kind":"WHITESPACE","start":[51,4,10],"end":[51,4,10],"istart":[24,1,12],"iend":[25,1,13]},{"type":"Token","kind":"R_CURLY","start":[52,5,0],"end":[52,5,0],"istart":[25,1,13],"iend":[26,1,14]}]}]}]}]}]},{"type":"Token","kind":"COMMA","start":[55,5,3],"end":[56,5,4]},{"type":"Token","kind":"WHITESPACE","start":[56,5,4],"end":[57,5,5]},{"type":"Token","kind":"STRING","start":[57,5,5],"end":[59,5,7]},{"type":"Token","kind":"R_PAREN","start":[59,5,7],"end":[60,5,8]}]}]}]},{"type":"Token","kind":"SEMICOLON","start":[60,5,8],"end":[61,5,9]}]},{"type":"Token","kind":"WHITESPACE","start":[61,5,9],"end":[62,6,0]},{"type":"Token","kind":"R_CURLY","start":[62,6,0],"end":[63,6,1]}]}]}]}]}"#
             ]],
         );
     }
diff --git a/src/tools/rust-analyzer/editors/code/src/commands.ts b/src/tools/rust-analyzer/editors/code/src/commands.ts
index b3aa04af7ed..eee623ecae9 100644
--- a/src/tools/rust-analyzer/editors/code/src/commands.ts
+++ b/src/tools/rust-analyzer/editors/code/src/commands.ts
@@ -361,10 +361,7 @@ export function syntaxTreeReveal(): Cmd {
         const activeEditor = vscode.window.activeTextEditor;
 
         if (activeEditor !== undefined) {
-            const start = activeEditor.document.positionAt(element.start);
-            const end = activeEditor.document.positionAt(element.end);
-
-            const newSelection = new vscode.Selection(start, end);
+            const newSelection = new vscode.Selection(element.range.start, element.range.end);
 
             activeEditor.selection = newSelection;
             activeEditor.revealRange(newSelection);
@@ -378,15 +375,12 @@ function elementToString(
     depth: number = 0,
 ): string {
     let result = "  ".repeat(depth);
-    const start = element.istart ?? element.start;
-    const end = element.iend ?? element.end;
+    const offsets = element.inner?.offsets ?? element.offsets;
 
-    result += `${element.kind}@${start}..${end}`;
+    result += `${element.kind}@${offsets.start}..${offsets.end}`;
 
     if (element.type === "Token") {
-        const startPosition = activeDocument.positionAt(element.start);
-        const endPosition = activeDocument.positionAt(element.end);
-        const text = activeDocument.getText(new vscode.Range(startPosition, endPosition));
+        const text = activeDocument.getText(element.range).replaceAll("\r\n", "\n");
         // JSON.stringify quotes and escapes the string for us.
         result += ` ${JSON.stringify(text)}\n`;
     } else {
diff --git a/src/tools/rust-analyzer/editors/code/src/ctx.ts b/src/tools/rust-analyzer/editors/code/src/ctx.ts
index 96dc4f19b82..4248305d5cc 100644
--- a/src/tools/rust-analyzer/editors/code/src/ctx.ts
+++ b/src/tools/rust-analyzer/editors/code/src/ctx.ts
@@ -384,9 +384,7 @@ export class Ctx implements RustAnalyzerExtensionApi {
                 return;
             }
 
-            const start = e.textEditor.document.offsetAt(selection.start);
-            const end = e.textEditor.document.offsetAt(selection.end);
-            const result = this.syntaxTreeProvider?.getElementByRange(start, end);
+            const result = this.syntaxTreeProvider?.getElementByRange(selection);
             if (result !== undefined) {
                 await this.syntaxTreeView?.reveal(result);
             }
diff --git a/src/tools/rust-analyzer/editors/code/src/syntax_tree_provider.ts b/src/tools/rust-analyzer/editors/code/src/syntax_tree_provider.ts
index c7e8007e838..3f7e30f13a3 100644
--- a/src/tools/rust-analyzer/editors/code/src/syntax_tree_provider.ts
+++ b/src/tools/rust-analyzer/editors/code/src/syntax_tree_provider.ts
@@ -37,11 +37,7 @@ export class SyntaxTreeProvider implements vscode.TreeDataProvider<SyntaxElement
         const editor = vscode.window.activeTextEditor;
 
         if (editor !== undefined) {
-            const start = editor.document.positionAt(element.start);
-            const end = editor.document.positionAt(element.end);
-            const range = new vscode.Range(start, end);
-
-            const text = editor.document.getText(range);
+            const text = editor.document.getText(element.range);
             item.tooltip = new vscode.MarkdownString().appendCodeblock(text, "rust");
         }
 
@@ -74,14 +70,61 @@ export class SyntaxTreeProvider implements vscode.TreeDataProvider<SyntaxElement
         if (editor && isRustEditor(editor)) {
             const params = { textDocument: { uri: editor.document.uri.toString() }, range: null };
             const fileText = await this.ctx.client.sendRequest(ra.viewSyntaxTree, params);
-            this.root = JSON.parse(fileText, (_key, value: SyntaxElement) => {
+            this.root = JSON.parse(fileText, (_key, value: RawElement): SyntaxElement => {
+                if (value.type !== "Node" && value.type !== "Token") {
+                    // This is something other than a RawElement.
+                    return value;
+                }
+                const [startOffset, startLine, startCol] = value.start;
+                const [endOffset, endLine, endCol] = value.end;
+                const range = new vscode.Range(startLine, startCol, endLine, endCol);
+                const offsets = {
+                    start: startOffset,
+                    end: endOffset,
+                };
+
+                let inner;
+                if (value.istart && value.iend) {
+                    const [istartOffset, istartLine, istartCol] = value.istart;
+                    const [iendOffset, iendLine, iendCol] = value.iend;
+
+                    inner = {
+                        offsets: {
+                            start: istartOffset,
+                            end: iendOffset,
+                        },
+                        range: new vscode.Range(istartLine, istartCol, iendLine, iendCol),
+                    };
+                }
+
                 if (value.type === "Node") {
-                    for (const child of value.children) {
-                        child.parent = value;
+                    const result = {
+                        type: value.type,
+                        kind: value.kind,
+                        offsets,
+                        range,
+                        inner,
+                        children: value.children,
+                        parent: undefined,
+                        document: editor.document,
+                    };
+
+                    for (const child of result.children) {
+                        child.parent = result;
                     }
-                }
 
-                return value;
+                    return result;
+                } else {
+                    return {
+                        type: value.type,
+                        kind: value.kind,
+                        offsets,
+                        range,
+                        inner,
+                        parent: undefined,
+                        document: editor.document,
+                    };
+                }
             });
         } else {
             this.root = undefined;
@@ -90,14 +133,14 @@ export class SyntaxTreeProvider implements vscode.TreeDataProvider<SyntaxElement
         this._onDidChangeTreeData.fire();
     }
 
-    getElementByRange(start: number, end: number): SyntaxElement | undefined {
+    getElementByRange(target: vscode.Range): SyntaxElement | undefined {
         if (this.root === undefined) {
             return undefined;
         }
 
         let result: SyntaxElement = this.root;
 
-        if (this.root.start === start && this.root.end === end) {
+        if (this.root.range.isEqual(target)) {
             return result;
         }
 
@@ -105,9 +148,9 @@ export class SyntaxTreeProvider implements vscode.TreeDataProvider<SyntaxElement
 
         outer: while (true) {
             for (const child of children) {
-                if (child.start <= start && child.end >= end) {
+                if (child.range.contains(target)) {
                     result = child;
-                    if (start === end && start === child.end) {
+                    if (target.isEmpty && target.start === child.range.end) {
                         // When the cursor is on the very end of a token,
                         // we assume the user wants the next token instead.
                         continue;
@@ -136,31 +179,72 @@ export class SyntaxTreeProvider implements vscode.TreeDataProvider<SyntaxElement
 export type SyntaxNode = {
     type: "Node";
     kind: string;
-    start: number;
-    end: number;
-    istart?: number;
-    iend?: number;
+    range: vscode.Range;
+    offsets: {
+        start: number;
+        end: number;
+    };
+    /** This element's position within a Rust string literal, if it's inside of one. */
+    inner?: {
+        range: vscode.Range;
+        offsets: {
+            start: number;
+            end: number;
+        };
+    };
     children: SyntaxElement[];
     parent?: SyntaxElement;
+    document: vscode.TextDocument;
 };
 
 type SyntaxToken = {
     type: "Token";
     kind: string;
-    start: number;
-    end: number;
-    istart?: number;
-    iend?: number;
+    range: vscode.Range;
+    offsets: {
+        start: number;
+        end: number;
+    };
+    /** This element's position within a Rust string literal, if it's inside of one. */
+    inner?: {
+        range: vscode.Range;
+        offsets: {
+            start: number;
+            end: number;
+        };
+    };
     parent?: SyntaxElement;
+    document: vscode.TextDocument;
 };
 
 export type SyntaxElement = SyntaxNode | SyntaxToken;
 
+type RawNode = {
+    type: "Node";
+    kind: string;
+    start: [number, number, number];
+    end: [number, number, number];
+    istart?: [number, number, number];
+    iend?: [number, number, number];
+    children: SyntaxElement[];
+};
+
+type RawToken = {
+    type: "Token";
+    kind: string;
+    start: [number, number, number];
+    end: [number, number, number];
+    istart?: [number, number, number];
+    iend?: [number, number, number];
+};
+
+type RawElement = RawNode | RawToken;
+
 export class SyntaxTreeItem extends vscode.TreeItem {
     constructor(private readonly element: SyntaxElement) {
         super(element.kind);
-        const icon = getIcon(element.kind);
-        if (element.type === "Node") {
+        const icon = getIcon(this.element.kind);
+        if (this.element.type === "Node") {
             this.contextValue = "syntaxNode";
             this.iconPath = icon ?? new vscode.ThemeIcon("list-tree");
             this.collapsibleState = vscode.TreeItemCollapsibleState.Expanded;
@@ -170,11 +254,9 @@ export class SyntaxTreeItem extends vscode.TreeItem {
             this.collapsibleState = vscode.TreeItemCollapsibleState.None;
         }
 
-        if (element.istart !== undefined && element.iend !== undefined) {
-            this.description = `${this.element.istart}..${this.element.iend}`;
-        } else {
-            this.description = `${this.element.start}..${this.element.end}`;
-        }
+        const offsets = this.element.inner?.offsets ?? this.element.offsets;
+
+        this.description = `${offsets.start}..${offsets.end}`;
     }
 }