Ichthyostega
8630e888a5
effectively this joins the two existing lines of "Query" classes into one systematic representation Next step would be to move all mutation operations over to the Query::Builder
74 lines
2.2 KiB
C++
74 lines
2.2 KiB
C++
/*
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QueryText - syntactical standard representation for queries
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Copyright (C) Lumiera.org
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2012, Hermann Vosseler <Ichthyostega@web.de>
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This program is free software; you can redistribute it and/or
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modify it under the terms of the GNU General Public License as
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published by the Free Software Foundation; either version 2 of
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the License, or (at your option) any later version.
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This program is distributed in the hope that it will be useful,
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but WITHOUT ANY WARRANTY; without even the implied warranty of
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MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
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GNU General Public License for more details.
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You should have received a copy of the GNU General Public License
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along with this program; if not, write to the Free Software
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Foundation, Inc., 675 Mass Ave, Cambridge, MA 02139, USA.
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* *****************************************************/
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//#include "lib/util.hpp"
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//#include "lib/symbol.hpp"
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//#include "include/logging.h"
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#include "lib/query-text.hpp"
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//#include <boost/noncopyable.hpp>
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#include <boost/functional/hash.hpp>
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#include <string>
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//#include <map>
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//using std::map;
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using std::string;
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//using util::contains;
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//using util::isnil;
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namespace lib {
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namespace { // internal details
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} // internal details
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/** Parse, verify and normalise the raw query definition
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* @warning right now (2012) we don't normalise at all
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* @todo when integrating a real resolution engine, we
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* need to parse and verify the given string.
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*/
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string
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QueryText::normalise (string const& rawDefinition)
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{
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return rawDefinition;
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}
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/** support using queries in hashtables.
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* @warning right now (2012) the dummy implementation of QueryText
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* doesn't normalise the query in any way, which makes the
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* generated hash value dependent on the actual textual
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* form used to build the QueryText. This is not how
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* it's intended to work, it should rely on a normalised
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* form after parsing the query definition.
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*/
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HashVal
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hash_value (QueryText const& entry)
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{
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return boost::hash_value (entry.definition_);
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}
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} // namespace lib
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