DescriptionScheme.hxx

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/*
 * Copyright (c) 2004 MUSIC TECHNOLOGY GROUP (MTG)
 *                         UNIVERSITAT POMPEU FABRA
 *
 *
 * This program is free software; you can redistribute it and/or modify
 * it under the terms of the GNU General Public License as published by
 * the Free Software Foundation; either version 2 of the License, or
 * (at your option) any later version.
 *
 * This program is distributed in the hope that it will be useful,
 * but WITHOUT ANY WARRANTY; without even the implied warranty of
 * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
 * GNU General Public License for more details.
 *
 * You should have received a copy of the GNU General Public License
 * along with this program; if not, write to the Free Software
 * Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA  02111-1307  USA
 *
 */

#ifndef _DescriptionScheme_hxx_
#define _DescriptionScheme_hxx_


#include "DescriptionScope.hxx"

/*
 You can find the doxygen of the SemanticalAnalysis group
 at the end of this file.
 */

namespace CLAM
{


        class DescriptionScheme : public Component
        {
        private:
                typedef std::map<std::string, unsigned> ScopeMap;
                typedef std::vector<DescriptionScope *> Scopes;
        private:
                Scopes _scopes;
                ScopeMap _scopeNameMap;
        public:
                DescriptionScheme()
                {
                }

                ~DescriptionScheme();

                template < typename DataType >
                void AddAttribute(const std::string &scope, const std::string & name)
                {
                        DescriptionScope & theScope = SearchScopeOrAdd(scope);
                        theScope.template Add<DataType>(name);
                }

                DescriptionScope & SearchScopeOrAdd(const std::string scopeName)
                {
                        const unsigned nScopes = _scopes.size();
                        std::pair<ScopeMap::iterator,bool> result = 
                                _scopeNameMap.insert(std::make_pair(scopeName,nScopes));

                        if (!result.second) return *_scopes[result.first->second];

                        DescriptionScope * theScope = new DescriptionScope(scopeName);
                        _scopes.push_back(theScope);
                        return *theScope;
                }

                unsigned GetScopeIndex(const std::string & name) const
                {
                        ScopeMap::const_iterator it = _scopeNameMap.find(name);
                        CLAM_ASSERT(it!=_scopeNameMap.end(), ("Attribute scope '" + name + "' not found").c_str());
                        return it->second;
                }

                const DescriptionScope & GetScope(unsigned scopeIndex) const
                {
                        CLAM_ASSERT(scopeIndex < _scopes.size(), "Accessing an illegal scope index for the description scheme");
                        return *_scopes[scopeIndex];
                }

                const DescriptionScope & GetScope(const std::string & name) const
                {
                        unsigned scopeIndex = GetScopeIndex(name);
                        return GetScope(scopeIndex);
                }
                unsigned GetNScopes() const 
                {
                        return _scopes.size();
                }

                const std::string & GetScopeName(unsigned scopeIndex) const
                {
                        const DescriptionScope & scope = GetScope(scopeIndex);
                        return scope.GetName();
                }
                void StoreOn(Storage & storage) const;
                void LoadFrom(Storage & storage);
                const char * GetClassName() const { return "DescriptionScheme"; }
        };
}

#endif// _DescriptionScheme_hxx_