internal Enumerator(CsrMatrixVector <T> vector, bool isColumn = false)
{
m_Vector = vector;
m_Index = vector.m_Start - 1;
m_Version = vector.m_Matrix.m_Version;
m_IsColumn = isColumn;
m_Current = default(Element <T>);
}
/// <summary>Advances the enumerator to the next element of the <see cref="T:System.Collections.Generic.List`1" />.</summary>
/// <returns>true if the enumerator was successfully advanced to the next element; false if the enumerator has passed the end of the collection.</returns>
/// <exception cref="T:System.InvalidOperationException">The collection was modified after the enumerator was created. </exception>
public bool MoveNext()
{
if (m_Version != m_Vector.m_Matrix.m_Version)
{
throw new InvalidOperationException();
}
CsrMatrixVector <T> vector = m_Vector;
if (m_IsColumn)
{
m_Index++;
for (; m_Index < vector.m_Matrix.m_RowsCount; ++m_Index)
{
int end = vector.m_Matrix.m_RowsMapping[m_Index + 1];
for (int i = vector.m_Matrix.m_RowsMapping[m_Index]; i < end; ++i)
{
int column = vector.m_Matrix.m_Columns[i];
if (column > vector.m_Number)
{
break;
}
if (column == vector.m_Number)
{
T value = vector.m_Matrix.m_Values[i];
if (object.Equals(value, default(T)))
{
break;
}
m_Current = new Element <T>(column, value);
return(true);
}
}
}
return(false);
}
else
{
if (m_Index < m_Vector.m_End)
{
m_Index++;
for (; m_Index < vector.m_End; ++m_Index)
{
T value = vector.m_Matrix.m_Values[m_Index];
if (object.Equals(value, default(T)))
{
continue;
}
int column = vector.m_Matrix.m_Columns[m_Index];
m_Current = new Element <T>(column, value);
return(true);
}
}
m_Index = m_Vector.m_End;
m_Current = default(Element <T>);
return(false);
}
}
