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+// file : xsd/cxx/parser/elements.hxx
+// author : Boris Kolpackov <boris@codesynthesis.com>
+// copyright : Copyright (c) 2005-2009 Code Synthesis Tools CC
+// license : GNU GPL v2 + exceptions; see accompanying LICENSE file
+
+#ifndef XSD_CXX_PARSER_ELEMENTS_HXX
+#define XSD_CXX_PARSER_ELEMENTS_HXX
+
+#include <xsd/cxx/ro-string.hxx>
+
+namespace xsd
+{
+ namespace cxx
+ {
+ namespace parser
+ {
+ // pre() and post() are overridable pre/post callbacks, i.e., the
+ // derived parser can override them without calling the base version.
+ // _pre() and _post() are not overridable pre/post callbacks in the
+ // sense that the derived parser may override them but has to call
+ // the base version. The call sequence is as shown below:
+ //
+ // pre ()
+ // _pre ()
+ // _post ()
+ // post ()
+ //
+ template <typename C>
+ class parser_base
+ {
+ public:
+ virtual
+ ~parser_base ();
+
+ virtual void
+ pre ();
+
+ virtual void
+ _pre ();
+
+ // The type argument is a type name and namespace from the
+ // xsi:type attribute in the form "<name> <namespace>" with
+ // the space and namespace part absent if the type does not
+ // have a namespace or 0 if xsi:type is not present.
+ //
+ virtual void
+ _start_element (const ro_string<C>& ns,
+ const ro_string<C>& name,
+ const ro_string<C>* type) = 0;
+
+ virtual void
+ _end_element (const ro_string<C>& ns,
+ const ro_string<C>& name) = 0;
+
+ virtual void
+ _attribute (const ro_string<C>& ns,
+ const ro_string<C>& name,
+ const ro_string<C>& value) = 0;
+
+ virtual void
+ _characters (const ro_string<C>&) = 0;
+
+ virtual void
+ _post ();
+
+ // The post() signature varies depending on the parser return
+ // type.
+ //
+
+ // Implementation callbacks for _pre and _post. The _pre and _post
+ // callbacks should never be called directly. Instead, the *_impl
+ // versions should be used. By default _pre_impl and _post_impl
+ // simply call _pre and _post respectively.
+ //
+ virtual void
+ _pre_impl ();
+
+ virtual void
+ _post_impl ();
+
+ public:
+ // Dynamic type in the form "<name> <namespace>" with
+ // the space and namespace part absent if the type does
+ // not have a namespace. Used in polymorphism-aware code.
+ //
+ virtual const C*
+ _dynamic_type () const;
+ };
+ }
+ }
+}
+
+#include <xsd/cxx/parser/elements.txx>
+
+#endif // XSD_CXX_PARSER_ELEMENTS_HXX