#ifndef ARABICA_XSLT_STYLESHEETPARSER_HPP
#define ARABICA_XSLT_STYLESHEETPARSER_HPP

#include <SAX/filter/NamespaceTracker.hpp>
#include <SAX/filter/XMLBaseTracker.hpp>
#include <SAX/filter/TextCoalescer.hpp>


namespace Arabica
{
namespace XSLT
{

class StylesheetParser
{
public:
  StylesheetParser() { }

  void setContentHandler(SAX::ContentHandler<std::string>& handler)
  {
    namespace_tracker_.setContentHandler(handler);
  } // setContentHandler

  SAX::ContentHandler<std::string>& contentHandler() 
  {
    return text_coalescer_;
  } // contentHandler
 
  void parse(SAX::InputSource<std::string>& source)
  {
    SAX::XMLReader<std::string> base_parser;
    text_coalescer_.setParent(base_parser);
    xmlbase_tracker_.setParent(text_coalescer_);
    namespace_tracker_.setParent(xmlbase_tracker_);

    namespace_tracker_.parse(source);
  } // parse

  std::string namespaceURI(const std::string& prefix) const
  {
    return namespace_tracker_.getURI(prefix);
  } // namespaceURI

  XML::QualifiedName<std::string> processElementQName(const std::string& rawName) const
  {
    XML::QualifiedName<std::string> qName = namespace_tracker_.processElementName(rawName);
    verifyQName(qName);
    return qName;
  } // processElementQName

  XML::QualifiedName<std::string> processInternalQName(const std::string& rawName) const
  {
    XML::QualifiedName<std::string> qName = namespace_tracker_.processName(rawName);
    verifyQName(qName);
    return qName;
  } // processQName

  std::map<std::string, std::string> inScopeNamespaces() const
  {
    return namespace_tracker_.inScopeNamespaces();
  } // inScopeNamespaces

  std::string setBase(const std::string& loc)
  {
    std::string current = currentBase();
    xmlbase_tracker_.setDocumentLocation(loc);
    return current;
  } // setBase
  
  std::string currentBase() const
  {
    return xmlbase_tracker_.currentBase();
  } // currentBase

  std::string makeAbsolute(const std::string& href) 
  {
    return xmlbase_tracker_.makeAbsolute(href);
  } // makeAbsolute

private:
  void verifyQName(const XML::QualifiedName<std::string>& qName) const
  {
    if(qName.has_prefix() && !qName.has_namespaceUri())
      throw SAX::SAXException("Namespace prefix '" + qName.prefix() + "' is not bound");
  } // verifyQName
  
  SAX::TextCoalescer<std::string> text_coalescer_;
  SAX::XMLBaseTracker<std::string> xmlbase_tracker_;
  SAX::NamespaceTracker<std::string> namespace_tracker_;

  StylesheetParser(const StylesheetParser&);
  StylesheetParser operator=(const StylesheetParser&);
  bool operator==(const StylesheetParser&);
}; // class StylesheetParser 

} // namespace XSLT
} // namespace Arabica

#endif // ARABICA_XSLT_STYLESHEETPARSER_HPP