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diff --git a/xsd-examples/cxx/tree/streaming/parser.hxx b/xsd-examples/cxx/tree/streaming/parser.hxx
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+++ b/xsd-examples/cxx/tree/streaming/parser.hxx
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+#ifndef PARSER_HXX
+#define PARSER_HXX
+
+#include <string>
+#include <iosfwd>
+#include <cstddef> // std::size_t
+#include <memory>  // std::unique_ptr
+
+#include <xercesc/dom/DOMDocument.hpp>
+
+#include <xsd/cxx/xml/dom/auto-ptr.hxx>
+
+class parser_impl;
+
+class parser
+{
+public:
+  // We can specify embedded XML Schema grammar to be used by the parser
+  // that was created by the xsdbin utility from the 'embedded' example.
+  //
+  parser (const XMLByte* grammar = 0, std::size_t grammar_size = 0);
+  ~parser ();
+
+  // The start function prepares everything for parsing a new document.
+  //
+  void
+  start (std::istream& is, const std::string& id, bool validate);
+
+  typedef xsd::cxx::xml::dom::unique_ptr<xercesc::DOMDocument> document_ptr;
+
+  // The peek function parses just the next element (ignoring any
+  // preceding content assuming it is whitespace) without parsing
+  // any of its nested content (but it includes the element's
+  // attributes). It returns NULL if there are no more elements
+  // at this level (there could still be on outer levels in case
+  // of nested streaming).
+  //
+  document_ptr
+  peek ();
+
+  // The next function parses (or finishes parsing after peek) the
+  // next element including its nested content. It returns NULL if
+  // there are no more elements at this level (there could still
+  // be on outer levels in case of nested streaming).
+  //
+  // If doc is not NULL, then it should be the document returned
+  // by peek(). That is, a document with only the root element.
+  // In this case next() finishes parsing this element.
+  //
+  // If outer_doc is not NULL, then next() will first add doc to
+  // outer_doc as a child of the document root.
+  //
+  document_ptr
+  next (document_ptr doc = document_ptr (),
+        document_ptr outer_doc = document_ptr ());
+
+private:
+  parser (const parser&);
+
+  parser&
+  operator= (const parser&);
+
+private:
+  std::unique_ptr<parser_impl> impl_;
+};
+
+#endif // PARSER_HXX