/usr/include/gtkmathview/MathView/Variant.hh is in libgtkmathview-dev 0.8.0-13.
This file is owned by root:root, with mode 0o644.
The actual contents of the file can be viewed below.
1 2 3 4 5 6 7 8 9 10 11 12 13 14 15 16 17 18 19 20 21 22 23 24 25 26 27 28 29 30 31 32 33 34 35 36 37 38 39 40 41 42 43 44 45 46 47 48 49 50 51 52 53 54 55 56 57 58 59 60 61 62 63 64 65 66 67 68 69 70 71 72 73 74 75 76 77 78 79 80 81 82 83 84 85 86 87 | // Copyright (C) 2000-2007, Luca Padovani <padovani@sti.uniurb.it>.
//
// This file is part of GtkMathView, a flexible, high-quality rendering
// engine for MathML documents.
//
// GtkMathView 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 3 of the License, or
// (at your option) any later version.
//
// GtkMathView 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 program. If not, see <http://www.gnu.org/licenses/>.
#ifndef __Variant_hh__
#define __Variant_hh__
#include <vector>
#include "SmartPtr.hh"
#include "Value.hh"
template <typename T>
class GMV_MathView_EXPORT Variant : public Value
{
protected:
Variant(const T& v) : value(v) { }
virtual ~Variant() { }
public:
static SmartPtr<Variant> create(const T& v) { return new Variant(v); }
T getValue(void) const { return value; }
private:
T value;
};
template <>
class GMV_MathView_EXPORT Variant<void> : public Value
{
protected:
Variant(void) { }
virtual ~Variant() { }
public:
static SmartPtr< Variant<void> > create(void)
{ return new Variant(); }
};
// The following full specialization is for sequences of Values
// There are more accessor methods and getValue returns a
// const reference instead of a copy fo the object
template <>
class GMV_MathView_EXPORT Variant< std::vector< SmartPtr<Value> > > : public Value
{
protected:
Variant(const std::vector< SmartPtr<Value> >& v) : content(v) { }
virtual ~Variant() { }
public:
static SmartPtr< Variant< std::vector< SmartPtr<Value> > > > create(const std::vector< SmartPtr<Value> >& v)
{ return new Variant(v); }
const std::vector< SmartPtr<Value> >& getValue(void) const { return content; }
unsigned getSize(void) const { return content.size(); }
SmartPtr<Value> getValue(unsigned i) const { return content[i]; }
private:
std::vector< SmartPtr<Value> > content;
};
typedef Variant< std::vector< SmartPtr<Value> > > ValueSequence;
template <typename T>
/* GMV_MathView_EXPORT */ T
as(const Value* v)
{
if (const Variant<T>* obj = dynamic_cast<const Variant<T>*>(v))
return obj->getValue();
else
throw Value::TypeError();
}
#endif // __Variant_hh__
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