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elements.txx @ 117

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pridana knihovna XSD (a jeji chlebodarkyne XERCES), v ramci Win32 zprovoznen priklad tests/test_xsd_hello.cxx

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1	// file : xsd/cxx/parser/xerces/elements.txx
2	// author : Boris Kolpackov <boris@codesynthesis.com>
3	// copyright : Copyright (c) 2005-2008 Code Synthesis Tools CC
4	// license : GNU GPL v2 + exceptions; see accompanying LICENSE file
5
6	#include <istream>
7	#include <cstddef> // std::size_t
8	#include <cassert>
9
10	#include <xercesc/sax/SAXParseException.hpp>
11	#include <xercesc/sax2/Attributes.hpp>
12	#include <xercesc/sax2/XMLReaderFactory.hpp>
13	#include <xercesc/validators/schema/SchemaSymbols.hpp>
14
15	#include <xsd/cxx/xml/string.hxx>
16	#include <xsd/cxx/xml/sax/std-input-source.hxx>
17	#include <xsd/cxx/xml/sax/bits/error-handler-proxy.hxx>
18	#include <xsd/cxx/xml/bits/literals.hxx> // xml::bits::{xml_prefix, etc}
19
20	#include <xsd/cxx/parser/error-handler.hxx>
21	#include <xsd/cxx/parser/schema-exceptions.hxx>
22
23	namespace xsd
24	{
25	namespace cxx
26	{
27	namespace parser
28	{
29	namespace xerces
30	{
31
32	// document
33	//
34
35	template <typename C>
36	document<C>::
37	document (parser_base<C>& parser,
38	const C* name,
39	bool polymorphic)
40	: cxx::parser::document<C> (parser, std::basic_string<C> (), name),
41	polymorphic_ (polymorphic)
42	{
43	}
44
45	template <typename C>
46	document<C>::
47	document (parser_base<C>& parser,
48	const std::basic_string<C>& name,
49	bool polymorphic)
50	: cxx::parser::document<C> (parser, std::basic_string<C> (), name),
51	polymorphic_ (polymorphic)
52	{
53	}
54
55	template <typename C>
56	document<C>::
57	document (parser_base<C>& parser,
58	const C* ns,
59	const C* name,
60	bool polymorphic)
61	: cxx::parser::document<C> (parser, ns, name),
62	polymorphic_ (polymorphic)
63	{
64	}
65
66	template <typename C>
67	document<C>::
68	document (parser_base<C>& parser,
69	const std::basic_string<C>& ns,
70	const std::basic_string<C>& name,
71	bool polymorphic)
72	: cxx::parser::document<C> (parser, ns, name),
73	polymorphic_ (polymorphic)
74	{
75	}
76
77	template <typename C>
78	document<C>::
79	document (bool polymorphic)
80	: polymorphic_ (polymorphic)
81	{
82	}
83
84	// parse (uri)
85	//
86	template <typename C>
87	void document<C>::
88	parse (const std::basic_string<C>& uri,
89	flags f,
90	const properties<C>& p)
91	{
92	xml::auto_initializer init ((f & flags::dont_initialize) == 0);
93
94	error_handler<C> eh;
95	xml::sax::bits::error_handler_proxy<C> eh_proxy (eh);
96	std::auto_ptr<xercesc::SAX2XMLReader> sax (create_sax_ (f, p));
97
98	parse (uri, eh_proxy, *sax, f, p);
99
100	eh.throw_if_failed ();
101	}
102
103	template <typename C>
104	void document<C>::
105	parse (const C* uri,
106	flags f,
107	const properties<C>& p)
108	{
109	parse (std::basic_string<C> (uri), f, p);
110	}
111
112	// error_handler
113	//
114
115	template <typename C>
116	void document<C>::
117	parse (const std::basic_string<C>& uri,
118	xml::error_handler<C>& eh,
119	flags f,
120	const properties<C>& p)
121	{
122	xml::auto_initializer init ((f & flags::dont_initialize) == 0);
123
124	xml::sax::bits::error_handler_proxy<C> eh_proxy (eh);
125	std::auto_ptr<xercesc::SAX2XMLReader> sax (create_sax_ (f, p));
126
127	parse (uri, eh_proxy, *sax, f, p);
128
129	if (eh_proxy.failed ())
130	throw parsing<C> ();
131	}
132
133	template <typename C>
134	void document<C>::
135	parse (const C* uri,
136	xml::error_handler<C>& eh,
137	flags f,
138	const properties<C>& p)
139	{
140	parse (std::basic_string<C> (uri), eh, f, p);
141	}
142
143	// ErrorHandler
144	//
145
146	template <typename C>
147	void document<C>::
148	parse (const std::basic_string<C>& uri,
149	xercesc::ErrorHandler& eh,
150	flags f,
151	const properties<C>& p)
152	{
153	xml::sax::bits::error_handler_proxy<C> eh_proxy (eh);
154	std::auto_ptr<xercesc::SAX2XMLReader> sax (create_sax_ (f, p));
155
156	parse (uri, eh_proxy, *sax, f, p);
157
158	if (eh_proxy.failed ())
159	throw parsing<C> ();
160	}
161
162	template <typename C>
163	void document<C>::
164	parse (const C* uri,
165	xercesc::ErrorHandler& eh,
166	flags f,
167	const properties<C>& p)
168	{
169	parse (std::basic_string<C> (uri), eh, f, p);
170	}
171
172	// SAX2XMLReader
173	//
174
175	template <typename C>
176	void document<C>::
177	parse (const std::basic_string<C>& uri,
178	xercesc::SAX2XMLReader& sax,
179	flags f,
180	const properties<C>& p)
181	{
182	// If there is no error handler, then fall back on the default
183	// implementation.
184	//
185	xercesc::ErrorHandler* eh (sax.getErrorHandler ());
186
187	if (eh)
188	{
189	xml::sax::bits::error_handler_proxy<C> eh_proxy (*eh);
190
191	parse (uri, eh_proxy, sax, f, p);
192
193	if (eh_proxy.failed ())
194	throw parsing<C> ();
195	}
196	else
197	{
198	error_handler<C> fallback_eh;
199	xml::sax::bits::error_handler_proxy<C> eh_proxy (fallback_eh);
200
201	parse (uri, eh_proxy, sax, f, p);
202
203	fallback_eh.throw_if_failed ();
204	}
205	}
206
207	template <typename C>
208	void document<C>::
209	parse (const C* uri,
210	xercesc::SAX2XMLReader& sax,
211	flags f,
212	const properties<C>& p)
213	{
214	parse (std::basic_string<C> (uri), sax, f, p);
215	}
216
217	// parse (istream)
218	//
219
220	template <typename C>
221	void document<C>::
222	parse (std::istream& is,
223	flags f,
224	const properties<C>& p)
225	{
226	xml::auto_initializer init ((f & flags::dont_initialize) == 0);
227
228	xml::sax::std_input_source isrc (is);
229
230	parse (isrc, f, p);
231	}
232
233	template <typename C>
234	void document<C>::
235	parse (std::istream& is,
236	xml::error_handler<C>& eh,
237	flags f,
238	const properties<C>& p)
239	{
240	xml::auto_initializer init ((f & flags::dont_initialize) == 0);
241	xml::sax::std_input_source isrc (is);
242	parse (isrc, eh, f, p);
243	}
244
245	template <typename C>
246	void document<C>::
247	parse (std::istream& is,
248	xercesc::ErrorHandler& eh,
249	flags f,
250	const properties<C>& p)
251	{
252	xml::sax::std_input_source isrc (is);
253	parse (isrc, eh, f, p);
254	}
255
256	template <typename C>
257	void document<C>::
258	parse (std::istream& is,
259	xercesc::SAX2XMLReader& sax,
260	flags f,
261	const properties<C>& p)
262	{
263	xml::sax::std_input_source isrc (is);
264	parse (isrc, sax, f, p);
265	}
266
267
268	// parse (istream, system_id)
269	//
270
271
272	template <typename C>
273	void document<C>::
274	parse (std::istream& is,
275	const std::basic_string<C>& system_id,
276	flags f,
277	const properties<C>& p)
278	{
279	xml::auto_initializer init ((f & flags::dont_initialize) == 0);
280	xml::sax::std_input_source isrc (is, system_id);
281	parse (isrc, f, p);
282	}
283
284	template <typename C>
285	void document<C>::
286	parse (std::istream& is,
287	const std::basic_string<C>& system_id,
288	xml::error_handler<C>& eh,
289	flags f,
290	const properties<C>& p)
291	{
292	xml::auto_initializer init ((f & flags::dont_initialize) == 0);
293	xml::sax::std_input_source isrc (is, system_id);
294	parse (isrc, eh, f, p);
295	}
296
297	template <typename C>
298	void document<C>::
299	parse (std::istream& is,
300	const std::basic_string<C>& system_id,
301	xercesc::ErrorHandler& eh,
302	flags f,
303	const properties<C>& p)
304	{
305	xml::sax::std_input_source isrc (is, system_id);
306	parse (isrc, eh, f, p);
307	}
308
309	template <typename C>
310	void document<C>::
311	parse (std::istream& is,
312	const std::basic_string<C>& system_id,
313	xercesc::SAX2XMLReader& sax,
314	flags f,
315	const properties<C>& p)
316	{
317	xml::sax::std_input_source isrc (is, system_id);
318	parse (isrc, sax, f, p);
319	}
320
321
322	// parse (istream, system_id, public_id)
323	//
324
325	template <typename C>
326	void document<C>::
327	parse (std::istream& is,
328	const std::basic_string<C>& system_id,
329	const std::basic_string<C>& public_id,
330	flags f,
331	const properties<C>& p)
332	{
333	xml::auto_initializer init ((f & flags::dont_initialize) == 0);
334	xml::sax::std_input_source isrc (is, system_id, public_id);
335	parse (isrc, f, p);
336	}
337
338	template <typename C>
339	void document<C>::
340	parse (std::istream& is,
341	const std::basic_string<C>& system_id,
342	const std::basic_string<C>& public_id,
343	xml::error_handler<C>& eh,
344	flags f,
345	const properties<C>& p)
346	{
347	xml::auto_initializer init ((f & flags::dont_initialize) == 0);
348	xml::sax::std_input_source isrc (is, system_id, public_id);
349	parse (isrc, eh, f, p);
350	}
351
352	template <typename C>
353	void document<C>::
354	parse (std::istream& is,
355	const std::basic_string<C>& system_id,
356	const std::basic_string<C>& public_id,
357	xercesc::ErrorHandler& eh,
358	flags f,
359	const properties<C>& p)
360	{
361	xml::sax::std_input_source isrc (is, system_id, public_id);
362	parse (isrc, eh, f, p);
363	}
364
365	template <typename C>
366	void document<C>::
367	parse (std::istream& is,
368	const std::basic_string<C>& system_id,
369	const std::basic_string<C>& public_id,
370	xercesc::SAX2XMLReader& sax,
371	flags f,
372	const properties<C>& p)
373	{
374	xml::sax::std_input_source isrc (is, system_id, public_id);
375	parse (isrc, sax, f, p);
376	}
377
378
379	// parse (InputSource)
380	//
381
382
383	template <typename C>
384	void document<C>::
385	parse (const xercesc::InputSource& is,
386	flags f,
387	const properties<C>& p)
388	{
389	error_handler<C> eh;
390	xml::sax::bits::error_handler_proxy<C> eh_proxy (eh);
391	std::auto_ptr<xercesc::SAX2XMLReader> sax (create_sax_ (f, p));
392
393	parse (is, eh_proxy, *sax, f, p);
394
395	eh.throw_if_failed ();
396	}
397
398	template <typename C>
399	void document<C>::
400	parse (const xercesc::InputSource& is,
401	xml::error_handler<C>& eh,
402	flags f,
403	const properties<C>& p)
404	{
405	xml::sax::bits::error_handler_proxy<C> eh_proxy (eh);
406	std::auto_ptr<xercesc::SAX2XMLReader> sax (create_sax_ (f, p));
407
408	parse (is, eh_proxy, *sax, f, p);
409
410	if (eh_proxy.failed ())
411	throw parsing<C> ();
412	}
413
414	template <typename C>
415	void document<C>::
416	parse (const xercesc::InputSource& is,
417	xercesc::ErrorHandler& eh,
418	flags f,
419	const properties<C>& p)
420	{
421	xml::sax::bits::error_handler_proxy<C> eh_proxy (eh);
422	std::auto_ptr<xercesc::SAX2XMLReader> sax (create_sax_ (f, p));
423
424	parse (is, eh_proxy, *sax, f, p);
425
426	if (eh_proxy.failed ())
427	throw parsing<C> ();
428	}
429
430
431	template <typename C>
432	void document<C>::
433	parse (const xercesc::InputSource& is,
434	xercesc::SAX2XMLReader& sax,
435	flags f,
436	const properties<C>& p)
437	{
438	// If there is no error handler, then fall back on the default
439	// implementation.
440	//
441	xercesc::ErrorHandler* eh (sax.getErrorHandler ());
442
443	if (eh)
444	{
445	xml::sax::bits::error_handler_proxy<C> eh_proxy (*eh);
446
447	parse (is, eh_proxy, sax, f, p);
448
449	if (eh_proxy.failed ())
450	throw parsing<C> ();
451	}
452	else
453	{
454	error_handler<C> fallback_eh;
455	xml::sax::bits::error_handler_proxy<C> eh_proxy (fallback_eh);
456
457	parse (is, eh_proxy, sax, f, p);
458
459	fallback_eh.throw_if_failed ();
460	}
461	}
462
463	namespace Bits
464	{
465	struct ErrorHandlingController
466	{
467	ErrorHandlingController (xercesc::SAX2XMLReader& sax,
468	xercesc::ErrorHandler& eh)
469	: sax_ (sax), eh_ (sax_.getErrorHandler ())
470	{
471	sax_.setErrorHandler (&eh);
472	}
473
474	~ErrorHandlingController ()
475	{
476	sax_.setErrorHandler (eh_);
477	}
478
479	private:
480	xercesc::SAX2XMLReader& sax_;
481	xercesc::ErrorHandler* eh_;
482	};
483
484	struct ContentHandlingController
485	{
486	ContentHandlingController (xercesc::SAX2XMLReader& sax,
487	xercesc::ContentHandler& ch)
488	: sax_ (sax), ch_ (sax_.getContentHandler ())
489	{
490	sax_.setContentHandler (&ch);
491	}
492
493	~ContentHandlingController ()
494	{
495	sax_.setContentHandler (ch_);
496	}
497
498	private:
499	xercesc::SAX2XMLReader& sax_;
500	xercesc::ContentHandler* ch_;
501	};
502	};
503
504	template <typename C>
505	void document<C>::
506	parse (const std::basic_string<C>& uri,
507	xercesc::ErrorHandler& eh,
508	xercesc::SAX2XMLReader& sax,
509	flags,
510	const properties<C>&)
511	{
512	event_router<C> router (*this, polymorphic_);
513
514	Bits::ErrorHandlingController ehc (sax, eh);
515	Bits::ContentHandlingController chc (sax, router);
516
517	try
518	{
519	sax.parse (xml::string (uri).c_str ());
520	}
521	catch (const schema_exception<C>& e)
522	{
523	xml::string id (e.id ());
524
525	xercesc::SAXParseException se (
526	xml::string (e.message ()).c_str (),
527	id.c_str (),
528	id.c_str (),
529	static_cast<XMLSSize_t> (e.line ()),
530	static_cast<XMLSSize_t> (e.column ()));
531
532	eh.fatalError (se);
533	}
534	}
535
536	template <typename C>
537	void document<C>::
538	parse (const xercesc::InputSource& is,
539	xercesc::ErrorHandler& eh,
540	xercesc::SAX2XMLReader& sax,
541	flags,
542	const properties<C>&)
543	{
544	event_router<C> router (*this, polymorphic_);
545
546	Bits::ErrorHandlingController controller (sax, eh);
547	Bits::ContentHandlingController chc (sax, router);
548
549	try
550	{
551	sax.parse (is);
552	}
553	catch (const schema_exception<C>& e)
554	{
555	xml::string id (e.id ());
556
557	xercesc::SAXParseException se (
558	xml::string (e.message ()).c_str (),
559	id.c_str (),
560	id.c_str (),
561	static_cast<XMLSSize_t> (e.line ()),
562	static_cast<XMLSSize_t> (e.column ()));
563
564	eh.fatalError (se);
565	}
566	}
567
568
569	template <typename C>
570	std::auto_ptr<xercesc::SAX2XMLReader> document<C>::
571	create_sax_ (flags f, const properties<C>& p)
572	{
573	// HP aCC cannot handle using namespace xercesc;
574	//
575	using xercesc::SAX2XMLReader;
576	using xercesc::XMLReaderFactory;
577	using xercesc::XMLUni;
578
579	std::auto_ptr<SAX2XMLReader> sax (
580	XMLReaderFactory::createXMLReader ());
581
582	sax->setFeature (XMLUni::fgSAX2CoreNameSpaces, true);
583	sax->setFeature (XMLUni::fgSAX2CoreNameSpacePrefixes, true);
584	sax->setFeature (XMLUni::fgXercesValidationErrorAsFatal, true);
585
586	if (f & flags::dont_validate)
587	{
588	sax->setFeature (XMLUni::fgSAX2CoreValidation, false);
589	sax->setFeature (XMLUni::fgXercesSchema, false);
590	sax->setFeature (XMLUni::fgXercesSchemaFullChecking, false);
591	}
592	else
593	{
594	sax->setFeature (XMLUni::fgSAX2CoreValidation, true);
595	sax->setFeature (XMLUni::fgXercesSchema, true);
596
597	// This feature checks the schema grammar for additional
598	// errors. We most likely do not need it when validating
599	// instances (assuming the schema is valid).
600	//
601	sax->setFeature (XMLUni::fgXercesSchemaFullChecking, false);
602	}
603
604	// Transfer properies if any.
605	//
606
607	if (!p.schema_location ().empty ())
608	{
609	xml::string sl (p.schema_location ());
610	const void* v (sl.c_str ());
611
612	sax->setProperty (
613	XMLUni::fgXercesSchemaExternalSchemaLocation,
614	const_cast<void*> (v));
615	}
616
617	if (!p.no_namespace_schema_location ().empty ())
618	{
619	xml::string sl (p.no_namespace_schema_location ());
620	const void* v (sl.c_str ());
621
622	sax->setProperty (
623	XMLUni::fgXercesSchemaExternalNoNameSpaceSchemaLocation,
624	const_cast<void*> (v));
625	}
626
627	return sax;
628	}
629
630	// event_router
631	//
632	template <typename C>
633	event_router<C>::
634	event_router (cxx::parser::document<C>& consumer, bool polymorphic)
635	: loc_ (0), consumer_ (consumer), polymorphic_ (polymorphic)
636	{
637	}
638
639	template <typename C>
640	void event_router<C>::
641	setDocumentLocator (const xercesc::Locator* const loc)
642	{
643	loc_ = loc;
644	}
645
646	template <typename C>
647	void event_router<C>::
648	startElement(const XMLCh* const uri,
649	const XMLCh* const lname,
650	const XMLCh* const /qname/,
651	const xercesc::Attributes& attributes)
652	{
653	typedef std::basic_string<C> string;
654
655	{
656	string ns (xml::transcode<C> (uri));
657	string name (xml::transcode<C> (lname));
658
659	// Without this explicit construction IBM XL C++ complains
660	// about ro_string's copy ctor being private even though the
661	// temporary has been eliminated. Note that we cannot
662	// eliminate ns and name since ro_string does not make a copy.
663	//
664	ro_string<C> ro_ns (ns);
665	ro_string<C> ro_name (name);
666
667	try
668	{
669	if (!polymorphic_)
670	consumer_.start_element (ro_ns, ro_name, 0);
671	else
672	{
673	// Search for the xsi:type attribute.
674	//
675	int i (attributes.getIndex (
676	xercesc::SchemaSymbols::fgURI_XSI,
677	xercesc::SchemaSymbols::fgXSI_TYPE));
678
679	if (i == -1)
680	consumer_.start_element (ro_ns, ro_name, 0);
681	else
682	{
683	// @@ Probably need proper QName validation.
684	//
685	// Get the qualified type name and try to resolve it.
686	//
687	string qn (xml::transcode<C> (attributes.getValue (i)));
688
689	string tp, tn, tns;
690	typename string::size_type pos (qn.find (C (':')));
691
692	if (pos != string::npos)
693	{
694	tp.assign (qn, 0, pos);
695	tn.assign (qn, pos + 1, string::npos);
696
697	if (tp.empty ())
698	throw dynamic_type<C> (qn);
699	}
700	else
701	tn = qn;
702
703	// Search our namespace declaration stack. Sun CC 5.7
704	// blows if we use const_reverse_iterator.
705	//
706	for (typename ns_decls::reverse_iterator
707	it (ns_decls_.rbegin ()), e (ns_decls_.rend ());
708	it != e; ++it)
709	{
710	if (it->prefix == tp)
711	{
712	tns = it->ns;
713	break;
714	}
715	}
716
717	if (!tp.empty () && tns.empty ())
718	{
719	// The 'xml' prefix requires special handling.
720	//
721	if (tp == xml::bits::xml_prefix<C> ())
722	tns = xml::bits::xml_namespace<C> ();
723	else
724	throw dynamic_type<C> (qn);
725	}
726
727	// Construct the compound name.
728	//
729	if (!tns.empty ())
730	{
731	tn += C (' ');
732	tn += tns;
733	}
734
735	ro_string<C> ro_tn (tn);
736
737	consumer_.start_element (ro_ns, ro_name, &ro_tn);
738	}
739	}
740	}
741	catch (schema_exception<C>& e)
742	{
743	set_location (e);
744	throw;
745	}
746	}
747
748	// Xerces SAX uses unsigned int for indexing.
749	//
750	for (unsigned int i (0); i < attributes.getLength(); ++i)
751	{
752	string ns (xml::transcode<C> (attributes.getURI (i)));
753	string name (xml::transcode<C> (attributes.getLocalName (i)));
754	string value (xml::transcode<C> (attributes.getValue (i)));
755
756	// Without this explicit construction IBM XL C++ complains
757	// about ro_string's copy ctor being private even though the
758	// temporary has been eliminated. Note that we cannot
759	// eliminate ns, name and value since ro_string does not make
760	// a copy.
761	//
762	ro_string<C> ro_ns (ns);
763	ro_string<C> ro_name (name);
764	ro_string<C> ro_value (value);
765
766	try
767	{
768	consumer_.attribute (ro_ns, ro_name, ro_value);
769	}
770	catch (schema_exception<C>& e)
771	{
772	set_location (e);
773	throw;
774	}
775	}
776	}
777
778	template <typename C>
779	void event_router<C>::
780	endElement(const XMLCh* const uri,
781	const XMLCh* const lname,
782	const XMLCh* const /qname/)
783	{
784	typedef std::basic_string<C> string;
785
786	string ns (xml::transcode<C> (uri));
787	string name (xml::transcode<C> (lname));
788
789	// Without this explicit construction IBM XL C++ complains
790	// about ro_string's copy ctor being private even though the
791	// temporary has been eliminated. Note that we cannot
792	// eliminate ns and name since ro_string does not make a copy.
793	//
794	ro_string<C> ro_ns (ns);
795	ro_string<C> ro_name (name);
796
797	try
798	{
799	consumer_.end_element (ro_ns, ro_name);
800	}
801	catch (schema_exception<C>& e)
802	{
803	set_location (e);
804	throw;
805	}
806	}
807
808	template <typename C>
809	void event_router<C>::
810	#if _XERCES_VERSION >= 30000
811	characters (const XMLCh* const s, const XMLSize_t n)
812	#else
813	characters (const XMLCh* const s, const unsigned int n)
814	#endif
815	{
816	typedef std::basic_string<C> string;
817
818	if (n != 0)
819	{
820	string str (xml::transcode<C> (s, n));
821
822	// Without this explicit construction IBM XL C++ complains
823	// about ro_string's copy ctor being private even though the
824	// temporary has been eliminated. Note that we cannot
825	// eliminate str since ro_string does not make a copy.
826	//
827	ro_string<C> ro_str (str);
828
829	try
830	{
831	consumer_.characters (ro_str);
832	}
833	catch (schema_exception<C>& e)
834	{
835	set_location (e);
836	throw;
837	}
838	}
839	}
840
841	template <typename C>
842	void event_router<C>::
843	startPrefixMapping (const XMLCh* const prefix,
844	const XMLCh* const uri)
845	{
846	if (polymorphic_)
847	{
848	typedef std::basic_string<C> string;
849
850	string p (xml::transcode<C> (prefix));
851	string ns (xml::transcode<C> (uri));
852
853	ns_decls_.push_back (ns_decl (p, ns));
854	}
855	}
856
857	template <typename C>
858	void event_router<C>::
859	endPrefixMapping (const XMLCh* const prefix)
860	{
861	if (polymorphic_)
862	{
863	typedef std::basic_string<C> string;
864
865	string p (xml::transcode<C> (prefix));
866
867	// Here we assume the prefixes are removed in the reverse
868	// order of them being added. This appears to how every
869	// sensible implementation works.
870	//
871	assert (ns_decls_.back ().prefix == p);
872
873	ns_decls_.pop_back ();
874	}
875	}
876
877	template <typename C>
878	void event_router<C>::
879	set_location (schema_exception<C>& e)
880	{
881	if (loc_ != 0)
882	{
883	const XMLCh* id (loc_->getPublicId ());
884
885	if (id == 0)
886	id = loc_->getSystemId ();
887
888	if (id != 0)
889	e.id (xml::transcode<C> (id));
890
891	XMLSSize_t l (loc_->getLineNumber ());
892	XMLSSize_t c (loc_->getColumnNumber ());
893
894	e.line (l == -1 ? 0 : static_cast<unsigned long> (l));
895	e.column (c == -1 ? 0: static_cast<unsigned long> (c));
896	}
897	}
898	}
899	}
900	}
901	}

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