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#ifndef PARSER_HXX
#define PARSER_HXX
#include <string>
#include <iosfwd>
#include <cstddef> // std::size_t
#include <memory> // std::auto_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::auto_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::auto_ptr<parser_impl> impl_;
};
#endif // PARSER_HXX
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