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/* -*- mode: c++; tab-width: 4; indent-tabs-mode: nil; c-basic-offset: 4 -*- */
/*
Copyright (C) 2018 Peter Caspers
This file is part of QuantLib, a free-software/open-source library
for financial quantitative analysts and developers - http://quantlib.org/
QuantLib is free software: you can redistribute it and/or modify it
under the terms of the QuantLib license. You should have received a
copy of the license along with this program; if not, please email
<quantlib-dev@lists.sf.net>. The license is also available online at
<http://quantlib.org/license.shtml>.
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 license for more details.
*/
/*! \file initializers.hpp
\brief array and matrix initializers
*/
#ifndef quantlib_initializers_hpp
#define quantlib_initializers_hpp
#include <ql/math/array.hpp>
#include <ql/math/matrix.hpp>
namespace QuantLib {
namespace initializers {
class ArrayProxy {
public:
ArrayProxy& operator,(const Real x) {
QL_REQUIRE(a_.size() > idx_,
"ArrayProxy: too many initializers, array has size "
<< a_.size());
a_[idx_++] = x;
return *this;
}
private:
ArrayProxy(Array& a, const Real x) : a_(a) {
QL_REQUIRE(!a_.empty(), "ArrayProxy: array has size 0");
a_[0] = x;
idx_ = 1;
}
friend ArrayProxy operator<<(Array&, Real);
Size idx_;
Array& a_;
};
class MatrixProxy {
public:
MatrixProxy& operator,(const Real x) {
QL_REQUIRE(m_.rows() * m_.columns() > idx_,
"MatrixProxy: too many initializers, matrix has size "
<< m_.rows() << "x" << m_.columns());
*(m_.begin() + idx_++) = x;
return *this;
}
private:
MatrixProxy(Matrix& m, const Real x) : m_(m) {
QL_REQUIRE(m_.rows() * m_.columns() > 0,
"MatrixProxy: matrix has size 0");
*m_.begin() = x;
idx_ = 1;
}
friend MatrixProxy operator<<(Matrix&, Real);
Size idx_;
Matrix& m_;
};
inline ArrayProxy operator<<(Array& a, const Real x) {
return ArrayProxy(a, x);
}
inline MatrixProxy operator<<(Matrix& m, const Real x) {
return MatrixProxy(m, x);
}
} // namespace initializers
using initializers::operator<<; // NOLINT(misc-unused-using-decls)
} // namespace QuantLib
#endif
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