Separate line and block comments into distinct node types (#271)

Replace the single `comment` external token (and the
`_newline_and_comment`
hack) with two distinct node types: `line_comment` (a grammar-level
token
matching `//...`) and `block_comment` (handled by the external scanner).

This makes comment node types more precise and removes the workaround of
aliasing `_newline_and_comment` as `comment` in statement delimiters.
Update all query files and corpus tests to reference the new node names.

Close #135

Co-authored-by: Claude Opus 4.7 noreply@anthropic.com

Author: aspeddro

grammar.js

@@ -5,8 +5,7 @@ module.exports = grammar({
 
   externals: ($) => [
     $._newline,
-    $.comment,
-    $._newline_and_comment,
+    $.block_comment,
     '"',
     "`",
     $._template_chars,
@@ -18,7 +17,12 @@ module.exports = grammar({
     $._decorator_inline,
   ],
 
-  extras: ($) => [$.comment, $.decorator, /[\s\uFEFF\u2060\u200B\u00A0]/],
+  extras: ($) => [
+    $.block_comment,
+    $.line_comment,
+    $.decorator,
+    /[\s\uFEFF\u2060\u200B\u00A0]/,
+  ],
 
   supertypes: ($) => [
     $.statement,
@@ -121,8 +125,9 @@ module.exports = grammar({
 
     _statement: ($) => seq($.statement, repeat1($._statement_delimeter)),
 
-    _statement_delimeter: ($) =>
-      choice(";", $._newline, alias($._newline_and_comment, $.comment)),
+    _statement_delimeter: ($) => choice(";", $._newline),
+
+    line_comment: ($) => token(seq("//", /[^\n]*/)),
 
     _one_or_more_statements: ($) =>
       seq(repeat($._statement), $.statement, optional($._statement_delimeter)),

queries/highlights.scm

@@ -1,4 +1,7 @@
-(comment) @comment
+[
+  (line_comment)
+  (block_comment)
+] @comment
 
 ; Identifiers
 ;------------

queries/injections.scm

@@ -1,4 +1,7 @@
-((comment) @injection.content (#set! injection.language "comment"))
+([
+  (line_comment)
+  (block_comment)
+] @injection.content (#set! injection.language "comment"))
 
 ; regex literal
 (regex

queries/textobjects.scm

@@ -24,7 +24,10 @@
 ; Comments
 ;---------
 
-(comment) @comment.outer
+[
+  (line_comment)
+  (block_comment)
+] @comment.outer
 
 ; Parameters
 ;-----------