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//# MArrayBase.cc: Base class for array used in a TableExprNode with an optional mask
//# Copyright (C) 2012
//# Associated Universities, Inc. Washington DC, USA.
//#
//# This library is free software; you can redistribute it and/or modify it
//# under the terms of the GNU Library General Public License as published by
//# the Free Software Foundation; either version 2 of the License, or (at your
//# option) any later version.
//#
//# This library 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 Library General Public
//# License for more details.
//#
//# You should have received a copy of the GNU Library General Public License
//# along with this library; if not, write to the Free Software Foundation,
//# Inc., 675 Massachusetts Ave, Cambridge, MA 02139, USA.
//#
//# Correspondence concerning AIPS++ should be addressed as follows:
//# Internet email: casa-feedback@nrao.edu.
//# Postal address: AIPS++ Project Office
//# National Radio Astronomy Observatory
//# 520 Edgemont Road
//# Charlottesville, VA 22903-2475 USA
//# Includes
#include <casacore/casa/Arrays/ArrayMath.h> //# needed for correct build
#include <casacore/tables/TaQL/MArray.h>
#include <casacore/casa/Utilities/Assert.h>
#include <casacore/casa/Exceptions/Error.h>
#include <iostream>
#include <sstream>
namespace casacore { //# NAMESPACE CASACORE - BEGIN
// Construct from a mask.
MArrayBase::MArrayBase (const ArrayBase& arr, const Array<Bool>& mask,
Bool isNull)
: itsMask (mask),
itsShape (arr.shape()),
itsSize (arr.size()),
itsNValid (arr.size()),
itsNull (isNull)
{
init();
}
MArrayBase::MArrayBase (const ArrayBase& arr, const MArrayBase& marray)
: itsMask (marray.mask()),
itsShape (arr.shape()),
itsSize (arr.size()),
itsNValid (arr.size()),
itsNull (marray.isNull())
{
init();
}
void MArrayBase::init()
{
if (itsNull) {
AlwaysAssert (itsShape.empty() && itsMask.empty(), AipsError);
} else if (! itsMask.empty()) {
itsNValid = -1;
if (! itsShape.isEqual (itsMask.shape())) {
std::ostringstream os;
os << "MArrayBase - array shape " << itsShape
<< " and mask shape " << itsMask.shape() << " mismatch";
throw ArrayError (os.str());
}
}
}
void MArrayBase::resizeBase (const ArrayBase& arr, Bool useMask)
{
itsShape.resize (arr.ndim());
itsShape = arr.shape();
itsSize = arr.size();
itsNull = False;
if (useMask) {
itsMask.resize (arr.shape());
itsNValid = -1;
} else {
removeMask();
}
}
void MArrayBase::referenceBase (const MArrayBase& other)
{
itsMask.reference (other.itsMask);
itsShape.resize (other.itsShape.size());
itsShape = other.itsShape;
itsSize = other.itsSize;
itsNValid = other.itsNValid;
itsNull = other.itsNull;
}
void MArrayBase::setBase (const ArrayBase& arr, const Array<Bool>& mask)
{
itsShape.resize (arr.ndim());
itsShape = arr.shape();
itsSize = arr.size();
itsNull = False;
setMask (mask);
}
void MArrayBase::setMask (const Array<Bool>& mask)
{
if (mask.empty()) {
removeMask();
} else {
AlwaysAssert (itsShape.isEqual (mask.shape()), AipsError);
itsMask.reference (mask);
itsNValid = -1;
}
}
Array<Bool> MArrayBase::combineMask (const MArrayBase& other) const
{
if (itsMask.empty()) {
return other.itsMask;
} else if (other.itsMask.empty()) {
return itsMask;
}
// Combine the flags of masked-off values.
return itsMask || other.itsMask;
}
void MArrayBase::fillNValid() const
{
if (hasMask()) {
itsNValid = nfalse(itsMask);
} else {
itsNValid = itsSize;
}
}
} //# NAMESPACE CASACORE - END
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