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Clarify error message when writing to a read-only sparse-sub-matrix.

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This commit is contained in:
Gael Guennebaud 2016-02-03 16:58:23 +01:00
parent 040cf33e8f
commit eb6d9aea0e
1 changed files with 19 additions and 4 deletions
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23
Eigen/src/SparseCore/SparseBlock.h
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@ -73,8 +73,15 @@ public:
Index m_outerStart;
const internal::variable_if_dynamic<Index, OuterSize> m_outerSize;
public:
EIGEN_INHERIT_ASSIGNMENT_OPERATORS(BlockImpl)
protected:
// Disable assignment with clear error message.
// Note that simply removing operator= yields compilation errors with ICC+MSVC
template<typename T>
BlockImpl& operator=(const T&)
{
EIGEN_STATIC_ASSERT(sizeof(T)==0, THIS_SPARSE_BLOCK_SUBEXPRESSION_IS_READ_ONLY);
return *this;
}
};
@ -425,14 +432,22 @@ public:
Index nonZeros() const { return Dynamic; }
EIGEN_INHERIT_ASSIGNMENT_OPERATORS(BlockImpl)
typename internal::ref_selector<XprType>::non_const_type m_matrix;
const internal::variable_if_dynamic<Index, XprType::RowsAtCompileTime == 1 ? 0 : Dynamic> m_startRow;
const internal::variable_if_dynamic<Index, XprType::ColsAtCompileTime == 1 ? 0 : Dynamic> m_startCol;
const internal::variable_if_dynamic<Index, RowsAtCompileTime> m_blockRows;
const internal::variable_if_dynamic<Index, ColsAtCompileTime> m_blockCols;
protected:
// Disable assignment with clear error message.
// Note that simply removing operator= yields compilation errors with ICC+MSVC
template<typename T>
BlockImpl& operator=(const T&)
{
EIGEN_STATIC_ASSERT(sizeof(T)==0, THIS_SPARSE_BLOCK_SUBEXPRESSION_IS_READ_ONLY);
return *this;
}
};
namespace internal {