/// <summary>
/// Creates substring of other <see cref="SqlString"/>.
/// </summary>
/// <param name="other"></param>
/// <param name="sqlStartIndex"></param>
/// <param name="length"></param>
private SqlString(SqlString other, int sqlStartIndex, int length)
{
_parts = other._parts;
_sqlStartIndex = sqlStartIndex;
_length = length;
_firstPartIndex = other.GetPartIndexForSqlIndex(sqlStartIndex);
_lastPartIndex = other.GetPartIndexForSqlIndex(_sqlStartIndex + _length - 1);
if (_firstPartIndex != _lastPartIndex || _parts[_firstPartIndex].IsParameter)
{
_parameters = new SortedList <int, Parameter>(other._parameters.Count);
using (var otherParameterEnum = other._parameters.GetEnumerator())
{
while (otherParameterEnum.MoveNext())
{
if (otherParameterEnum.Current.Key >= _sqlStartIndex)
{
break;
}
}
var sqlEndIndex = _sqlStartIndex + _length;
do
{
if (otherParameterEnum.Current.Key > sqlEndIndex)
{
break;
}
_parameters.Add(otherParameterEnum.Current.Key, otherParameterEnum.Current.Value);
} while (otherParameterEnum.MoveNext());
}
}
else
{
_parameters = Empty._parameters;
}
}