]> git.ipfire.org Git - thirdparty/gcc.git/commitdiff
gccrs: Add support for parsing empty tuple patterns.
authorOwen Avery <powerboat9.gamer@gmail.com>
Tue, 14 Feb 2023 01:32:51 +0000 (20:32 -0500)
committerArthur Cohen <arthur.cohen@embecosm.com>
Thu, 6 Apr 2023 08:47:23 +0000 (10:47 +0200)
gcc/rust/ChangeLog:

* parse/rust-parse-impl.h
(Parser::parse_grouped_or_tuple_pattern): Add support for empty tuple patterns.

gcc/testsuite/ChangeLog:

* rust/compile/parse_empty_tuple_pattern.rs: New test.

Signed-off-by: Owen Avery <powerboat9.gamer@gmail.com>
gcc/rust/parse/rust-parse-impl.h
gcc/testsuite/rust/compile/parse_empty_tuple_pattern.rs [new file with mode: 0644]

index 4ceb978f7f443fd4029f6926bdd764b7ec84741d..cc5436cff63e1a47ad137ff5ba527f696b5a917d 100644 (file)
@@ -10926,6 +10926,15 @@ Parser<ManagedTokenSource>::parse_grouped_or_tuple_pattern ()
       return std::unique_ptr<AST::TuplePattern> (
        new AST::TuplePattern (std::move (items), paren_locus));
     }
+  else if (lexer.peek_token ()->get_id () == RIGHT_PAREN)
+    {
+      skip_token (RIGHT_PAREN);
+      auto items = std::unique_ptr<AST::TuplePatternItemsMultiple> (
+       new AST::TuplePatternItemsMultiple (
+         std::vector<std::unique_ptr<AST::Pattern>> ()));
+      return std::unique_ptr<AST::TuplePattern> (
+       new AST::TuplePattern (std::move (items), paren_locus));
+    }
 
   // parse initial pattern (required)
   std::unique_ptr<AST::Pattern> initial_pattern = parse_pattern ();
diff --git a/gcc/testsuite/rust/compile/parse_empty_tuple_pattern.rs b/gcc/testsuite/rust/compile/parse_empty_tuple_pattern.rs
new file mode 100644 (file)
index 0000000..d974d31
--- /dev/null
@@ -0,0 +1,3 @@
+fn main() {
+    let () = ();
+}