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/* -*- mode: c++; c-basic-offset: 4 -*- */
/* Utilities to create scalars and empty arrays that behave like the
Numpy array wrappers in numpy_cpp.h */
#ifndef _SCALAR_H_
#define _SCALAR_H_
namespace array
{
template <typename T, int ND>
class scalar
{
public:
T m_value;
scalar(const T value) : m_value(value)
{
}
T &operator()(int i, int j = 0, int k = 0)
{
return m_value;
}
const T &operator()(int i, int j = 0, int k = 0) const
{
return m_value;
}
int dim(size_t i)
{
return 1;
}
size_t size()
{
return 1;
}
};
template <typename T>
class empty
{
public:
typedef empty<T> sub_t;
empty()
{
}
T &operator()(int i, int j = 0, int k = 0)
{
throw std::runtime_error("Accessed empty array");
}
const T &operator()(int i, int j = 0, int k = 0) const
{
throw std::runtime_error("Accessed empty array");
}
sub_t operator[](int i) const
{
return empty<T>();
}
int dim(size_t i) const
{
return 0;
}
size_t size() const
{
return 0;
}
};
}
#endif
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