gccrs: ast-builder: Add new methods for building structs

gcc/rust/ChangeLog:

	* ast/rust-ast-builder.cc: Add new methods for constructing struct exprs.
	* ast/rust-ast-builder.h: Mention how to build tuple expressions.

2 files changed, 15 insertions, 2 deletions

diff --git a/gcc/rust/ast/rust-ast-builder.cc b/gcc/rust/ast/rust-ast-builder.cc
index fe80924..47044df 100644
--- a/gcc/rust/ast/rust-ast-builder.cc
+++ b/gcc/rust/ast/rust-ast-builder.cc
@@ -24,6 +24,7 @@
 #include "rust-path.h"
 #include "rust-item.h"
 #include "rust-path.h"
+#include "rust-system.h"
 #include "rust-token.h"
 
 namespace Rust {
@@ -262,9 +263,16 @@ Builder::struct_expr (
   std::string struct_name,
   std::vector<std::unique_ptr<StructExprField>> &&fields) const
 {
+  return struct_expr (path_in_expression ({struct_name}), std::move (fields));
+}
+
+std::unique_ptr<Expr>
+Builder::struct_expr (
+  PathInExpression struct_name,
+  std::vector<std::unique_ptr<StructExprField>> &&fields) const
+{
   return std::unique_ptr<Expr> (
-    new StructExprStructFields (path_in_expression ({struct_name}),
-				std::move (fields), loc));
+    new StructExprStructFields (struct_name, std::move (fields), loc));
 }
 
 std::unique_ptr<StructExprField>
diff --git a/gcc/rust/ast/rust-ast-builder.h b/gcc/rust/ast/rust-ast-builder.h
index 624cd71..e5bae6e 100644
--- a/gcc/rust/ast/rust-ast-builder.h
+++ b/gcc/rust/ast/rust-ast-builder.h
@@ -160,10 +160,15 @@ public:
 
   /**
    * Create an expression for struct instantiation with fields (`S { a, b: c }`)
+   * Tuple expressions are call expressions and can thus be constructed with
+   * `call`
    */
   std::unique_ptr<Expr>
   struct_expr (std::string struct_name,
 	       std::vector<std::unique_ptr<StructExprField>> &&fields) const;
+  std::unique_ptr<Expr>
+  struct_expr (PathInExpression struct_name,
+	       std::vector<std::unique_ptr<StructExprField>> &&fields) const;
 
   /* Create a field expression for struct instantiation (`field_name: value`) */
   std::unique_ptr<StructExprField>