public IEnumerable <StatementSyntax> GetMoveNext(StatementSyntax finalizer)
{
yield return(SF.IfStatement(SF.BinaryExpression(SyntaxKind.GreaterThanExpression,
SF.PrefixUnaryExpression(SyntaxKind.PreIncrementExpression, SF.IdentifierName(bitIndex)), SH.Literal(7)),
SF.Block(_wrapped.GetMoveNext(finalizer).Concat(new StatementSyntax[] {
SH.Assignment(SF.IdentifierName(cachedInput), _wrapped.GetInput()),
SH.Assignment(SF.IdentifierName(bitIndex), SH.Literal(0))
})),
SF.ElseClause(SH.Assignment(SF.IdentifierName(cachedInput), SH.Literal(1), SyntaxKind.RightShiftAssignmentExpression))));
}