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operators.cpp
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67 lines (56 loc) · 1.32 KB
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#include <iostream>
#include <boost/python.hpp>
using namespace boost::python;
class FilePos
{
friend FilePos& operator+=(FilePos&, int);
friend FilePos& operator-=(FilePos&, int);
public:
FilePos(int val = 1):value(val) { std::cout << "FilePos default constructor" << std::endl; }
FilePos(const FilePos& f): value(f.get_val()) { std::cout << "FilePos copy constructor" << std::endl;}
int get_val() const { return value; }
private:
int value;
};
FilePos operator+(FilePos f, int v)
{
return FilePos(v + f.get_val());
}
FilePos operator+(int v, FilePos f)
{
return f + v;
}
int operator-(FilePos f1, FilePos f2)
{
return f1.get_val() - f2.get_val();
}
FilePos operator-(FilePos f, int i)
{
return f.get_val() - i;
}
FilePos& operator+=(FilePos &f, int i)
{
f.value += i;
return f;
}
FilePos& operator-=(FilePos &f, int i)
{
f.value -= i;
return f;
}
bool operator<(FilePos f1, FilePos f2)
{
return f1.get_val() < f2.get_val();
}
BOOST_PYTHON_MODULE(operators)
{
class_<FilePos>("FilePos")
.def(init<int>())
.def(self + int()) // __add__
.def(int() + self) // __radd__
.def(self - self) // __sub__
.def(self - int()) // __sub__
.def(self += int()) // __iadd__
.def(self -= other<int>()) // when type does not support default-constructor
.def(self < self); // __lt__
}