pugixml.cpp

	PUGI__FN bool xpath_variable_set::set(const char_t* name, const char_t* value)
	{
		xpath_variable* var = add(name, xpath_type_string);
		return var ? var->set(value) : false;
	}

	PUGI__FN bool xpath_variable_set::set(const char_t* name, const xpath_node_set& value)
	{
		xpath_variable* var = add(name, xpath_type_node_set);
		return var ? var->set(value) : false;
	}

	PUGI__FN xpath_variable* xpath_variable_set::get(const char_t* name)
	{
		return find(name);
	}

	PUGI__FN const xpath_variable* xpath_variable_set::get(const char_t* name) const
	{
		return find(name);
	}

	PUGI__FN xpath_query::xpath_query(const char_t* query, xpath_variable_set* variables): _impl(0)
	{
		impl::xpath_query_impl* qimpl = impl::xpath_query_impl::create();

		if (!qimpl)
		{
		#ifdef PUGIXML_NO_EXCEPTIONS
			_result.error = "Out of memory";
		#else
			throw std::bad_alloc();
		#endif
		}
		else
		{
			impl::buffer_holder impl_holder(qimpl, impl::xpath_query_impl::destroy);

			qimpl->root = impl::xpath_parser::parse(query, variables, &qimpl->alloc, &_result);

			if (qimpl->root)
			{
				_impl = static_cast<impl::xpath_query_impl*>(impl_holder.release());
				_result.error = 0;
			}
		}
	}

	PUGI__FN xpath_query::~xpath_query()
	{
		impl::xpath_query_impl::destroy(_impl);
	}

	PUGI__FN xpath_value_type xpath_query::return_type() const
	{
		if (!_impl) return xpath_type_none;

		return static_cast<impl::xpath_query_impl*>(_impl)->root->rettype();
	}

	PUGI__FN bool xpath_query::evaluate_boolean(const xpath_node& n) const
	{
		if (!_impl) return false;
		
		impl::xpath_context c(n, 1, 1);
		impl::xpath_stack_data sd;

	#ifdef PUGIXML_NO_EXCEPTIONS
		if (setjmp(sd.error_handler)) return false;
	#endif
		
		return static_cast<impl::xpath_query_impl*>(_impl)->root->eval_boolean(c, sd.stack);
	}
	
	PUGI__FN double xpath_query::evaluate_number(const xpath_node& n) const
	{
		if (!_impl) return impl::gen_nan();
		
		impl::xpath_context c(n, 1, 1);
		impl::xpath_stack_data sd;

	#ifdef PUGIXML_NO_EXCEPTIONS
		if (setjmp(sd.error_handler)) return impl::gen_nan();
	#endif

		return static_cast<impl::xpath_query_impl*>(_impl)->root->eval_number(c, sd.stack);
	}

#ifndef PUGIXML_NO_STL
	PUGI__FN string_t xpath_query::evaluate_string(const xpath_node& n) const
	{
		impl::xpath_stack_data sd;

		return impl::evaluate_string_impl(static_cast<impl::xpath_query_impl*>(_impl), n, sd).c_str();
	}
#endif

	PUGI__FN size_t xpath_query::evaluate_string(char_t* buffer, size_t capacity, const xpath_node& n) const
	{
		impl::xpath_stack_data sd;

		impl::xpath_string r = impl::evaluate_string_impl(static_cast<impl::xpath_query_impl*>(_impl), n, sd);

		size_t full_size = r.length() + 1;
		
		if (capacity > 0)
		{
			size_t size = (full_size < capacity) ? full_size : capacity;
			assert(size > 0);

			memcpy(buffer, r.c_str(), (size - 1) * sizeof(char_t));
			buffer[size - 1] = 0;
		}
		
		return full_size;
	}

	PUGI__FN xpath_node_set xpath_query::evaluate_node_set(const xpath_node& n) const
	{
		if (!_impl) return xpath_node_set();

		impl::xpath_ast_node* root = static_cast<impl::xpath_query_impl*>(_impl)->root;

		if (root->rettype() != xpath_type_node_set)
		{
		#ifdef PUGIXML_NO_EXCEPTIONS
			return xpath_node_set();
		#else
			xpath_parse_result res;
			res.error = "Expression does not evaluate to node set";

			throw xpath_exception(res);
		#endif
		}
		
		impl::xpath_context c(n, 1, 1);
		impl::xpath_stack_data sd;

	#ifdef PUGIXML_NO_EXCEPTIONS
		if (setjmp(sd.error_handler)) return xpath_node_set();
	#endif

		impl::xpath_node_set_raw r = root->eval_node_set(c, sd.stack);

		return xpath_node_set(r.begin(), r.end(), r.type());
	}

	PUGI__FN const xpath_parse_result& xpath_query::result() const
	{
		return _result;
	}

	PUGI__FN static void unspecified_bool_xpath_query(xpath_query***)
	{
	}

	PUGI__FN xpath_query::operator xpath_query::unspecified_bool_type() const
	{
		return _impl ? unspecified_bool_xpath_query : 0;
	}

	PUGI__FN bool xpath_query::operator!() const
	{
		return !_impl;
	}

	PUGI__FN xpath_node xml_node::select_single_node(const char_t* query, xpath_variable_set* variables) const
	{
		xpath_query q(query, variables);
		return select_single_node(q);
	}

	PUGI__FN xpath_node xml_node::select_single_node(const xpath_query& query) const
	{
		xpath_node_set s = query.evaluate_node_set(*this);
		return s.empty() ? xpath_node() : s.first();
	}

	PUGI__FN xpath_node_set xml_node::select_nodes(const char_t* query, xpath_variable_set* variables) const
	{
		xpath_query q(query, variables);
		return select_nodes(q);
	}

	PUGI__FN xpath_node_set xml_node::select_nodes(const xpath_query& query) const
	{
		return query.evaluate_node_set(*this);
	}
}

#endif

#ifdef __BORLANDC__
#	pragma option pop
#endif

// Intel C++ does not properly keep warning state for function templates,
// so popping warning state at the end of translation unit leads to warnings in the middle.
#if defined(_MSC_VER) && !defined(__INTEL_COMPILER)
#	pragma warning(pop)
#endif

// Undefine all local macros (makes sure we're not leaking macros in header-only mode)
#undef PUGI__NO_INLINE
#undef PUGI__STATIC_ASSERT
#undef PUGI__DMC_VOLATILE
#undef PUGI__MSVC_CRT_VERSION
#undef PUGI__NS_BEGIN
#undef PUGI__NS_END
#undef PUGI__FN
#undef PUGI__FN_NO_INLINE
#undef PUGI__IS_CHARTYPE_IMPL
#undef PUGI__IS_CHARTYPE
#undef PUGI__IS_CHARTYPEX
#undef PUGI__SKIPWS
#undef PUGI__OPTSET
#undef PUGI__PUSHNODE
#undef PUGI__POPNODE
#undef PUGI__SCANFOR
#undef PUGI__SCANWHILE
#undef PUGI__ENDSEG
#undef PUGI__THROW_ERROR
#undef PUGI__CHECK_ERROR

#endif

/**
 * Copyright (c) 2006-2012 Arseny Kapoulkine
 *
 * Permission is hereby granted, free of charge, to any person
 * obtaining a copy of this software and associated documentation
 * files (the "Software"), to deal in the Software without
 * restriction, including without limitation the rights to use,
 * copy, modify, merge, publish, distribute, sublicense, and/or sell
 * copies of the Software, and to permit persons to whom the
 * Software is furnished to do so, subject to the following
 * conditions:
 *
 * The above copyright notice and this permission notice shall be
 * included in all copies or substantial portions of the Software.
 * 
 * THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND,
 * EXPRESS OR IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES
 * OF MERCHANTABILITY, FITNESS FOR A PARTICULAR PURPOSE AND
 * NONINFRINGEMENT. IN NO EVENT SHALL THE AUTHORS OR COPYRIGHT
 * HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER LIABILITY,
 * WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING
 * FROM, OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR
 * OTHER DEALINGS IN THE SOFTWARE.
 */