Echo requires-clause on generated postfix ++/--

Author: hsutter

regression-tests/test-results/version

@@ -1,5 +1,5 @@
 
-cppfront compiler v0.3.0   Build 8C10:1238
+cppfront compiler v0.3.0   Build 8C11:0148
 Copyright(c) Herb Sutter   All rights reserved
 
 SPDX-License-Identifier: CC-BY-NC-ND-4.0

source/build.info

@@ -1 +1 @@
-"8C10:1238"
+"8C11:0148"

source/parse.h

@@ -2256,6 +2256,18 @@ struct function_type_node
         return returns.index() != empty;
     }
 
+    auto has_deduced_return_type() const
+        -> bool
+    {
+        return
+            returns.index() == empty
+            || (
+                returns.index() == id
+                && std::get<function_type_node::id>(returns).type->is_wildcard()
+                )
+            ;
+    }
+
     auto unnamed_return_type_to_string() const
         -> std::string
     {
@@ -3359,6 +3371,16 @@ struct declaration_node
         return false;
     }
 
+    auto has_deduced_return_type() const
+        -> bool
+    {
+        if (auto func = std::get_if<a_function>(&type)) {
+            return (*func)->has_deduced_return_type();
+        }
+        //  else
+        return false;
+    }
+
     auto unnamed_return_type_to_string() const
         -> std::string
     {