mirror of
https://github.com/paboyle/Grid.git
synced 2024-11-09 23:45:36 +00:00
88 lines
2.6 KiB
C++
88 lines
2.6 KiB
C++
/*************************************************************************************
|
|
|
|
Grid physics library, www.github.com/paboyle/Grid
|
|
|
|
Source file: ./gcc-bug-report/broken.cc
|
|
|
|
Copyright (C) 2015
|
|
|
|
Author: Peter Boyle <paboyle@ph.ed.ac.uk>
|
|
|
|
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.,
|
|
51 Franklin Street, Fifth Floor, Boston, MA 02110-1301 USA.
|
|
|
|
See the full license in the file "LICENSE" in the top level distribution directory
|
|
*************************************************************************************/
|
|
/* END LEGAL */
|
|
#include <vector>
|
|
#include <complex>
|
|
#include <type_traits>
|
|
#include <iostream>
|
|
|
|
typedef std::complex<double> ComplexD;
|
|
|
|
template <class T> class TypeMapper {
|
|
public:
|
|
enum { NestLevel = T::NestLevel };
|
|
};
|
|
|
|
template<> class TypeMapper<ComplexD> {
|
|
public:
|
|
enum { NestLevel = 0 };
|
|
};
|
|
|
|
template<class obj> class Container {
|
|
public:
|
|
std::vector<obj> data;
|
|
Container(int size) : data (size){};
|
|
};
|
|
|
|
template<class obj> class Recursive {
|
|
public:
|
|
enum { NestLevel = TypeMapper<obj>::NestLevel + 1};
|
|
obj internal;
|
|
};
|
|
|
|
template<int N,class obj,typename std::enable_if<N==obj::NestLevel >::type * = nullptr > auto function(const obj &arg)-> obj
|
|
{
|
|
std::cout<<GridLogMessage<<"Leaf "<<obj::NestLevel<<std::endl;
|
|
return arg;
|
|
}
|
|
template<int N,class obj,typename std::enable_if<N!=obj::NestLevel >::type * = nullptr > auto function(const obj &arg)-> obj
|
|
{
|
|
std::cout<<GridLogMessage<<"Node "<<obj::NestLevel<<std::endl;
|
|
obj ret;
|
|
ret.internal=function<N>(arg.internal);
|
|
return ret;
|
|
}
|
|
|
|
template<int N,class obj> auto function(const Container<obj> & arg)-> Container<decltype(function<N>(arg.data[0]))>
|
|
{
|
|
Container<decltype(function<N>(arg.data[0]))> ret(arg.data.size());
|
|
for(int ss=0;ss<arg.data.size();ss++){
|
|
ret.data[ss] = function<N>(arg.data[ss]);
|
|
}
|
|
return ret;
|
|
}
|
|
|
|
|
|
int main(int argc,char **argv)
|
|
{
|
|
Container<Recursive<Recursive<ComplexD> > > array(10);
|
|
Container<Recursive<Recursive<ComplexD> > > ret(10);
|
|
|
|
ret = function<1>(array);
|
|
ret = function<2>(array);
|
|
}
|