From 5d513688ae07d96910dd1eef83bdad4e9d780373 Mon Sep 17 00:00:00 2001
From: Karen Arutyunov <karen@codesynthesis.com>
Date: Thu, 22 Apr 2021 21:57:13 +0300
Subject: Add support for linked configurations

---
 bpkg/pointer-traits.hxx | 58 +++++++++++++++++++++++++++++++++++++++++++++++++
 1 file changed, 58 insertions(+)
 create mode 100644 bpkg/pointer-traits.hxx

(limited to 'bpkg/pointer-traits.hxx')

diff --git a/bpkg/pointer-traits.hxx b/bpkg/pointer-traits.hxx
new file mode 100644
index 0000000..a63b289
--- /dev/null
+++ b/bpkg/pointer-traits.hxx
@@ -0,0 +1,58 @@
+// file      : bpkg/pointer-traits.hxx -*- C++ -*-
+// license   : MIT; see accompanying LICENSE file
+
+#ifndef BPKG_POINTER_TRAITS_HXX
+#define BPKG_POINTER_TRAITS_HXX
+
+#include <bpkg/types.hxx>
+
+#include <odb/pointer-traits.hxx>
+
+namespace odb
+{
+  template <typename T>
+  class pointer_traits<bpkg::lazy_shared_ptr<T>>
+  {
+  public:
+    static const pointer_kind kind = pk_shared;
+    static const bool lazy = true;
+
+    typedef T element_type;
+    typedef bpkg::lazy_shared_ptr<element_type> pointer_type;
+    typedef bpkg::shared_ptr<element_type> eager_pointer_type;
+
+    static bool
+    null_ptr (const pointer_type& p)
+    {
+      return !p;
+    }
+
+    template <class O = T>
+    static typename object_traits<O>::id_type
+    object_id (const pointer_type& p)
+    {
+      return p.template object_id<O> ();
+    }
+  };
+
+  template <typename T>
+  class pointer_traits<bpkg::lazy_weak_ptr<T>>
+  {
+  public:
+    static const pointer_kind kind = pk_weak;
+    static const bool lazy = true;
+
+    typedef T element_type;
+    typedef bpkg::lazy_weak_ptr<element_type> pointer_type;
+    typedef bpkg::lazy_shared_ptr<element_type> strong_pointer_type;
+    typedef bpkg::weak_ptr<element_type> eager_pointer_type;
+
+    static strong_pointer_type
+    lock (const pointer_type& p)
+    {
+      return p.lock ();
+    }
+  };
+}
+
+#endif // BPKG_POINTER_TRAITS_HXX
-- 
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