Add support for impl and constraint declaration in Carbon lexer (#2368)

pygments · Mar 2, 2023 · 826dc60 · 826dc60
1 parent 3ed18e5
commit 826dc60
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Showing 3 changed files with 53 additions and 2 deletions.
diff --git a/pygments/lexers/carbon.py b/pygments/lexers/carbon.py
@@ -41,7 +41,7 @@ class CarbonLexer(RegexLexer):
             # Declaration
             (r'(package|import|api|namespace|library)\b', Keyword.Namespace),
             (r'(abstract|alias|fn|class|interface|let|var|virtual|external|'
-             r'base|addr|extends|choice)\b', Keyword.Declaration),
+             r'base|addr|extends|choice|constraint|impl)\b', Keyword.Declaration),
             # Keywords
             (words(('as', 'or', 'not', 'and', 'break', 'continue', 'case',
                     'default', 'if', 'else', 'destructor', 'for', 'forall',

diff --git a/tests/examplefiles/carbon/declarations.carbon b/tests/examplefiles/carbon/declarations.carbon
@@ -27,4 +27,11 @@ class Pal {
 
 abstract class MyAbstractClass {
   protected fn Create() -> partial Self { }
-}
+}
+
+constraint DrawVectorLegoFish {
+  impl as VectorLegoFish;
+  impl as Drawable;
+}
+
+impl JustX as X {}
diff --git a/tests/examplefiles/carbon/declarations.carbon.output b/tests/examplefiles/carbon/declarations.carbon.output