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gccrs: Add support for parsing empty tuple patterns.

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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>
This commit is contained in:
Owen Avery
2023-02-13 20:32:51 -05:00
committed by Arthur Cohen
parent 7b00a80c9d
commit 20529dff93
2 changed files with 12 additions and 0 deletions
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9
gcc/rust/parse/rust-parse-impl.h
View 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 ();

3
gcc/testsuite/rust/compile/parse_empty_tuple_pattern.rs Normal file
View File

@@ -0,0 +1,3 @@
fn main() {
let () = ();
}