gccrs: Lower ErrorPropagationExpr from AST to HIR

gcc/rust/ChangeLog:
	* hir/rust-ast-lower-expr.h, hir/rust-ast-lower-expr.cc:
	Lower AST::ErrorPropagationExpr to HIR::ErrorPropagationExpr

Signed-off-by: Sergey Bugaev <bugaevc@gmail.com>

2 files changed, 16 insertions, 0 deletions

diff --git a/gcc/rust/hir/rust-ast-lower-expr.cc b/gcc/rust/hir/rust-ast-lower-expr.cc
index d05d127..8d09664 100644
--- a/gcc/rust/hir/rust-ast-lower-expr.cc
+++ b/gcc/rust/hir/rust-ast-lower-expr.cc
@@ -674,6 +674,21 @@ ASTLoweringExpr::visit (AST::DereferenceExpr &expr)
 }
 
 void
+ASTLoweringExpr::visit (AST::ErrorPropagationExpr &expr)
+{
+  HIR::Expr *propagating_expr
+    = ASTLoweringExpr::translate (expr.get_propagating_expr ().get ());
+
+  auto crate_num = mappings->get_current_crate ();
+  Analysis::NodeMapping mapping (crate_num, expr.get_node_id (),
+				 mappings->get_next_hir_id (crate_num),
+				 UNKNOWN_LOCAL_DEFID);
+  translated = new HIR::ErrorPropagationExpr (
+    mapping, std::unique_ptr<HIR::Expr> (propagating_expr),
+    expr.get_outer_attrs (), expr.get_locus ());
+}
+
+void
 ASTLoweringExpr::visit (AST::MatchExpr &expr)
 {
   translated = ASTLoweringExprWithBlock::translate (&expr, &terminated);
diff --git a/gcc/rust/hir/rust-ast-lower-expr.h b/gcc/rust/hir/rust-ast-lower-expr.h
index cfd755c..b9a7a77 100644
--- a/gcc/rust/hir/rust-ast-lower-expr.h
+++ b/gcc/rust/hir/rust-ast-lower-expr.h
@@ -111,6 +111,7 @@ public:
   void visit (AST::ContinueExpr &expr) override;
   void visit (AST::BorrowExpr &expr) override;
   void visit (AST::DereferenceExpr &expr) override;
+  void visit (AST::ErrorPropagationExpr &expr) override;
   void visit (AST::MatchExpr &expr) override;
   void visit (AST::RangeFromToExpr &expr) override;
   void visit (AST::RangeFromExpr &expr) override;