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//JsonMe++ C++ JSON parsing (wrapper) library.
//Copyright (C) Rob J Meijer 2011 <jsonme@polacanthus.net>
//
//This library is free software; you can redistribute it and/or
//modify it under the terms of the GNU Lesser General Public
//License as published by the Free Software Foundation; either
//version 2.1 of the License, or (at your option) any later version.
//
//This library 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
//Lesser General Public License for more details.
//
//You should have received a copy of the GNU Lesser General Public
//License along with this library; if not, write to the Free Software
//Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA 02111-1307 USA
#include "json-me.hpp"
namespace jsonme {
//This implements the NullObject design pattern for the AbstractScalar interface.
class NullScalar: public AbstractScalar {
public:
jsonme::scalartype scalartype() const { return NULLVAL;}
operator long double() const { return 0;}
operator long long() const { return 0;}
operator std::string() const { return "";}
operator bool() const { return false;}
bool isNull() const { return true;}
};
//The default constructor wraps a NullScalar.
Scalar::Scalar():mScalar(new NullScalar()){}
//Alternative constructor wraps a dynamically allocated implementation of the AbstractScalar interface.
Scalar::Scalar(AbstractScalar *scalar):mScalar(scalar){}
//Simple method forwarding.
jsonme::scalartype Scalar::scalartype() const {
return mScalar->scalartype();
}
//Simple forwarding of the real cast.
Scalar::operator long double() const {
return (*mScalar);
}
//Simple forwarding of the real cast.
Scalar::operator long long() const {
return (*mScalar);
}
//Simple forwarding of the real cast.
Scalar::operator std::string() const {
return (*mScalar);
}
//Simple forwarding of the real cast.
Scalar::operator bool() const {
return (*mScalar);
}
//Simple forwarding of the real cast.
bool Scalar::isNull() const {
return mScalar->isNull();
}
}