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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 MPL_SCALAR_H

#define MPL_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