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// -*- c-basic-offset: 4 -*-
/*
Rosegarden
A sequencer and musical notation editor.
This program is Copyright 2000-2008
Guillaume Laurent <[email protected]>,
Chris Cannam <[email protected]>,
Richard Bown <[email protected]>
The moral right of the authors to claim authorship of this work
has been asserted.
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. See the file
COPYING included with this distribution for more information.
*/
#ifndef _PROPERTY_H_
#define _PROPERTY_H_
#include <string>
#include "RealTime.h"
namespace Rosegarden
{
enum PropertyType { Int, String, Bool, RealTimeT, UInt };
template <PropertyType P>
class PropertyDefn
{
public:
struct PropertyDefnNotDefined {
PropertyDefnNotDefined() { throw(0); }
};
typedef PropertyDefnNotDefined basic_type;
static std::string typeName() { return "Undefined"; }
static basic_type parse(std::string);
static std::string unparse(basic_type);
};
template <PropertyType P>
typename PropertyDefn<P>::basic_type
PropertyDefn<P>::parse(std::string)
{
throw(0);
return "";
}
template <PropertyType P>
std::string
PropertyDefn<P>::unparse(PropertyDefn<P>::basic_type)
{
throw(0);
return "";
}
template <>
class PropertyDefn<Int>
{
public:
typedef long basic_type;
static std::string typeName();
static basic_type parse(std::string s);
static std::string unparse(basic_type i);
};
template <>
class PropertyDefn<String>
{
public:
typedef std::string basic_type;
static std::string typeName();
static basic_type parse(std::string s);
static std::string unparse(basic_type i);
};
template <>
class PropertyDefn<Bool>
{
public:
typedef bool basic_type;
static std::string typeName();
static basic_type parse(std::string s);
static std::string unparse(basic_type i);
};
template <>
class PropertyDefn<RealTimeT>
{
public:
typedef RealTime basic_type;
static std::string typeName();
static basic_type parse(std::string s);
static std::string unparse(basic_type i);
};
template <>
class PropertyDefn<UInt>
{
public:
typedef unsigned int basic_type;
static std::string typeName();
static basic_type parse(std::string s);
static std::string unparse(basic_type i);
};
class PropertyStoreBase {
public:
virtual ~PropertyStoreBase();
virtual PropertyType getType() const = 0;
virtual std::string getTypeName() const = 0;
virtual PropertyStoreBase *clone() = 0;
virtual std::string unparse() const = 0;
virtual size_t getStorageSize() const = 0; // for debugging
#ifndef NDEBUG
virtual void dump(std::ostream&) const = 0;
#else
virtual void dump(std::ostream&) const { }
#endif
};
#ifndef NDEBUG
inline std::ostream& operator<<(std::ostream &out, PropertyStoreBase &e)
{ e.dump(out); return out; }
#endif
template <PropertyType P>
class PropertyStore : public PropertyStoreBase
{
public:
PropertyStore(typename PropertyDefn<P>::basic_type d) :
m_data(d) { }
PropertyStore(const PropertyStore<P> &p) :
PropertyStoreBase(p), m_data(p.m_data) { }
PropertyStore &operator=(const PropertyStore<P> &p);
virtual PropertyType getType() const;
virtual std::string getTypeName() const;
virtual PropertyStoreBase* clone();
virtual std::string unparse() const;
typename PropertyDefn<P>::basic_type getData() { return m_data; }
void setData(typename PropertyDefn<P>::basic_type data) { m_data = data; }
virtual size_t getStorageSize() const;
#ifndef NDEBUG
void dump(std::ostream&) const;
#endif
private:
typename PropertyDefn<P>::basic_type m_data;
};
template <PropertyType P>
PropertyStore<P>&
PropertyStore<P>::operator=(const PropertyStore<P> &p) {
if (this != &p) {
m_data = p.m_data;
}
return *this;
}
template <PropertyType P>
PropertyType
PropertyStore<P>::getType() const
{
return P;
}
template <PropertyType P>
std::string
PropertyStore<P>::getTypeName() const
{
return PropertyDefn<P>::typeName();
}
template <PropertyType P>
PropertyStoreBase*
PropertyStore<P>::clone()
{
return new PropertyStore<P>(*this);
}
template <PropertyType P>
std::string
PropertyStore<P>::unparse() const
{
return PropertyDefn<P>::unparse(m_data);
}
#ifndef NDEBUG
template <PropertyType P>
void
PropertyStore<P>::dump(std::ostream &out) const
{
out << getTypeName() << " - " << unparse();
}
#endif
}
#endif
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