Improve bare key-value pair lexing

This commit provides support for tokenising bare keys as `Name::Label` without introducing backtracking for non-key strings.
rouge-ruby · Jul 10, 2019 · 04238d0 · 04238d0
1 parent 77dd1b8
commit 04238d0
Showing 1 changed file with 9 additions and 0 deletions.
diff --git a/lib/rouge/lexers/json.rb b/lib/rouge/lexers/json.rb
@@ -20,6 +20,15 @@ class JSON < RegexLexer
         mixin :whitespace
         rule %r/{/, Punctuation, :object
         rule %r/\[/, Punctuation, :array
+
+        rule %r/("[^"]*")(:?)/ do |m|
+          if m[2] == ":"
+            groups Name::Label, Punctuation
+            push :value
+          else
+            token Str::Double
+          end
+        end
 
         rule(%r//) { push :value }
       end