Merge #616

616: Lex raw idents correctly r=matklad a=jrobsonchase

One question:

What's the intent of the text by the `IDENT` node under `NAME`? Should it be the actual token text or the semantic name?

Closes #611 

Co-authored-by: Josh Robson Chase <[email protected]>

1 files changed, 6 insertions, 7 deletions

diff --git a/crates/ra_syntax/src/lexer.rs b/crates/ra_syntax/src/lexer.rs
index c6acd095e..0c3847120 100644
--- a/crates/ra_syntax/src/lexer.rs
+++ b/crates/ra_syntax/src/lexer.rs
@@ -190,13 +190,12 @@ fn next_token_inner(c: char, ptr: &mut Ptr) -> SyntaxKind {
 }
 
 fn scan_ident(c: char, ptr: &mut Ptr) -> SyntaxKind {
-    let is_single_letter = match ptr.current() {
-        None => true,
-        Some(c) if !is_ident_continue(c) => true,
-        _ => false,
-    };
-    if is_single_letter {
-        return if c == '_' { UNDERSCORE } else { IDENT };
+    match (c, ptr.current()) {
+        ('r', Some('#')) => {
+            ptr.bump();
+        }
+        ('_', Some(c)) if !is_ident_continue(c) => return UNDERSCORE,
+        _ => {}
     }
     ptr.bump_while(is_ident_continue);
     if let Some(kind) = SyntaxKind::from_keyword(ptr.current_token_text()) {