xo-interpreter2 stack: lambda expr -> closure runs in VSM utest

include/xo/interpreter2/DLocalEnv.hpp

@@ -58,6 +58,12 @@ namespace xo {
             std::size_t forward_children(obj<ACollector> gc) noexcept;
 
             ///@}
+            /** @defgroup scm-localenv-printable-facet **/
+            ///@{
+
+            bool pretty(const ppindentinfo & ppii) const noexcept;
+
+            ///@}
 
         private:
             /** parent environment (from closure) **/

include/xo/interpreter2/LocalEnv.hpp

@@ -7,6 +7,6 @@
 
 #include "DLocalEnv.hpp"
 #include "detail/IGCObject_DLocalEnv.hpp"
-//#include "detail/IPrintable_DLocalEnv.hpp"
+#include "detail/IPrintable_DLocalEnv.hpp"
 
 /* end LocalEnv.hpp */

include/xo/interpreter2/VirtualSchematikaMachine.hpp

@@ -216,6 +216,7 @@ namespace xo {
              *  in execution
              **/
             DLocalEnv * local_env_ = nullptr;
+
         protected:  // temporarily, to appease compiler
             /** environment pointer.  Maintains bindings
              *  for global variables.

include/xo/interpreter2/detail/IPrintable_DLocalEnv.hpp

@@ -0,0 +1,62 @@
+/** @file IPrintable_DLocalEnv.hpp
+ *
+ *  Generated automagically from ingredients:
+ *  1. code generator:
+ *       [xo-facet/codegen/genfacet]
+ *     arguments:
+ *       --input [idl/IPrintable_DLocalEnv.json5]
+ *  2. jinja2 template for abstract facet .hpp file:
+ *       [iface_facet_repr.hpp.j2]
+ *  3. idl for facet methods
+ *       [idl/IPrintable_DLocalEnv.json5]
+ **/
+
+#pragma once
+
+#include "Printable.hpp"
+#include <xo/printable2/Printable.hpp>
+#include <xo/printable2/detail/IPrintable_Xfer.hpp>
+#include "DLocalEnv.hpp"
+
+namespace xo { namespace scm { class IPrintable_DLocalEnv; } }
+
+namespace xo {
+    namespace facet {
+        template <>
+        struct FacetImplementation<xo::print::APrintable,
+                                   xo::scm::DLocalEnv>
+        {
+            using ImplType = xo::print::IPrintable_Xfer
+              <xo::scm::DLocalEnv,
+               xo::scm::IPrintable_DLocalEnv>;
+        };
+    }
+}
+
+namespace xo {
+    namespace scm {
+        /** @class IPrintable_DLocalEnv
+         **/
+        class IPrintable_DLocalEnv {
+        public:
+            /** @defgroup scm-printable-dlocalenv-type-traits **/
+            ///@{
+            using ppindentinfo = xo::print::APrintable::ppindentinfo;
+            using Copaque = xo::print::APrintable::Copaque;
+            using Opaque = xo::print::APrintable::Opaque;
+            ///@}
+            /** @defgroup scm-printable-dlocalenv-methods **/
+            ///@{
+            // const methods
+            /** Pretty-printing support for this object.
+See [xo-indentlog/xo/indentlog/pretty.hpp] **/
+            static bool pretty(const DLocalEnv & self, const ppindentinfo & ppii);
+
+            // non-const methods
+            ///@}
+        };
+
+    } /*namespace scm*/
+} /*namespace xo*/
+
+/* end */