Add forward declaration file

5 files changed, 25 insertions, 4 deletions

diff --git a/xml/forward.hxx b/xml/forward.hxx
new file mode 100644
index 0000000..bacd5f5
--- /dev/null
+++ b/xml/forward.hxx
@@ -0,0 +1,19 @@
+// file      : xml/forward.hxx
+// copyright : Copyright (c) 2013-2014 Code Synthesis Tools CC
+// license   : MIT; see accompanying LICENSE file
+
+#ifndef XML_FORWARD_HXX
+#define XML_FORWARD_HXX
+
+#include <xml/details/pre.hxx>
+
+namespace xml
+{
+  class qname;
+  class parser;
+  class serializer;
+}
+
+#include <xml/details/post.hxx>
+
+#endif // XML_FORWARD_HXX
diff --git a/xml/parser.hxx b/xml/parser.hxx
index 97a6291..cd33588 100644
--- a/xml/parser.hxx
+++ b/xml/parser.hxx
@@ -27,6 +27,7 @@
 #  error UTF-16 expat (XML_UNICODE defined) is not supported
 #endif
 
+#include <xml/forward.hxx>
 #include <xml/qname.hxx>
 #include <xml/exception.hxx>
 
diff --git a/xml/qname.hxx b/xml/qname.hxx
index dcb5c82..7ffd215 100644
--- a/xml/qname.hxx
+++ b/xml/qname.hxx
@@ -10,6 +10,8 @@
 #include <string>
 #include <iosfwd>
 
+#include <xml/forward.hxx>
+
 #include <xml/details/export.hxx>
 
 namespace xml
diff --git a/xml/serializer.hxx b/xml/serializer.hxx
index d07221d..25f1672 100644
--- a/xml/serializer.hxx
+++ b/xml/serializer.hxx
@@ -13,6 +13,7 @@
 
 #include <xml/details/genx/genx.h>
 
+#include <xml/forward.hxx>
 #include <xml/qname.hxx>
 #include <xml/exception.hxx>
 
diff --git a/xml/value-traits.hxx b/xml/value-traits.hxx
index c61380a..ca86382 100644
--- a/xml/value-traits.hxx
+++ b/xml/value-traits.hxx
@@ -10,14 +10,12 @@
 #include <string>
 #include <cstddef> // std::size_t
 
+#include <xml/forward.hxx>
+
 #include <xml/details/export.hxx>
 
 namespace xml
 {
-  //@@ forward
-  class parser;
-  class serializer;
-
   template <typename T>
   struct default_value_traits
   {