gccrs: Add HIR lowering for GroupedPattern

gcc/rust/ChangeLog:

	* hir/rust-ast-lower-pattern.cc (ASTLoweringPattern::visit): Add proper visitor.
	* hir/rust-ast-lower-pattern.h: Declare it.

Signed-off-by: Owen Avery <powerboat9.gamer@gmail.com>

2 files changed, 17 insertions, 0 deletions

diff --git a/gcc/rust/hir/rust-ast-lower-pattern.cc b/gcc/rust/hir/rust-ast-lower-pattern.cc
index 30a1882..8ee3a97 100644
--- a/gcc/rust/hir/rust-ast-lower-pattern.cc
+++ b/gcc/rust/hir/rust-ast-lower-pattern.cc
@@ -243,5 +243,21 @@ ASTLoweringPattern::visit (AST::RangePattern &pattern)
 			     std::move (upper_bound), pattern.get_locus ());
 }
 
+void
+ASTLoweringPattern::visit (AST::GroupedPattern &pattern)
+{
+  auto crate_num = mappings->get_current_crate ();
+  Analysis::NodeMapping mapping (crate_num, pattern.get_node_id (),
+				 mappings->get_next_hir_id (crate_num),
+				 UNKNOWN_LOCAL_DEFID);
+
+  HIR::Pattern *inner
+    = ASTLoweringPattern::translate (pattern.get_pattern_in_parens ().get ());
+
+  translated
+    = new HIR::GroupedPattern (mapping, std::unique_ptr<HIR::Pattern> (inner),
+			       pattern.get_locus ());
+}
+
 } // namespace HIR
 } // namespace Rust
diff --git a/gcc/rust/hir/rust-ast-lower-pattern.h b/gcc/rust/hir/rust-ast-lower-pattern.h
index 8b191d5..0075e27 100644
--- a/gcc/rust/hir/rust-ast-lower-pattern.h
+++ b/gcc/rust/hir/rust-ast-lower-pattern.h
@@ -39,6 +39,7 @@ public:
   void visit (AST::TuplePattern &pattern) override;
   void visit (AST::LiteralPattern &pattern) override;
   void visit (AST::RangePattern &pattern) override;
+  void visit (AST::GroupedPattern &pattern) override;
 
 private:
   ASTLoweringPattern ();