add support for lexing attributes in Chapel (#2376)

Chapel 1.30 includes support for attributes. The lexer was not able to process them without some adjustments.

Co-authored-by: amitkummer <49096391+amitkummer@users.noreply.github.com>

1 files changed, 4 insertions, 0 deletions

diff --git a/pygments/lexers/chapel.py b/pygments/lexers/chapel.py
index 908d391e..4beeebb1 100644
--- a/pygments/lexers/chapel.py
+++ b/pygments/lexers/chapel.py
@@ -73,6 +73,7 @@ class ChapelLexer(RegexLexer):
             (words(known_types, suffix=r'\b'), Keyword.Type),
             (words((*type_modifiers, *other_keywords), suffix=r'\b'), Keyword),
 
+            (r'@', Keyword, 'attributename'),
             (r'(iter)(\s+)', bygroups(Keyword, Whitespace), 'procname'),
             (r'(proc)(\s+)', bygroups(Keyword, Whitespace), 'procname'),
             (r'(operator)(\s+)', bygroups(Keyword, Whitespace), 'procname'),
@@ -133,4 +134,7 @@ class ChapelLexer(RegexLexer):
             (words(known_types, suffix=r'\b'), Keyword.Type),
             (r'[^()]*', Name.Other, '#pop'),
         ],
+        'attributename': [
+            (r'[a-zA-Z_][.\w$]*', Name.Decorator, '#pop'),
+        ],
     }