/// <summary>
/// Appends the specified <see cref="MdxRange"/> and returns the updated current instance of <see cref="MdxSet"/>.
/// If there are any <see cref="MdxTuple"/>s in <see cref="Children"/> then specified <see cref="MdxRange"/>
/// is appended to the last <see cref="MdxTuple"/>.
/// </summary>
/// <param name="range">Specified <see cref="MdxRange"/>.</param>
/// <returns>Returns the updated current instance of <see cref="MdxSet"/>.</returns>
public MdxSet With(MdxRange range)
{
var lastTuple = _children.OfType<MdxTuple>().LastOrDefault();
if (lastTuple == null)
{
_children.Add(range);
return this;
}
lastTuple.With(range);
return this;
}
/// <summary>
/// Appends the specified <see cref="MdxRange"/> and returns the updated current instance of <see cref="MdxTuple"/>.
/// If there are any <see cref="MdxSet"/>s in <see cref="Children"/> then specified <see cref="MdxRange"/>
/// is appended to the last <see cref="MdxSet"/>.
/// </summary>
/// <param name="range">Specified <see cref="MdxRange"/>.</param>
/// <returns>Returns the updated current instance of <see cref="MdxTuple"/>.</returns>
public MdxTuple With(MdxRange range)
{
var lastSet = _children.OfType <MdxSet>().LastOrDefault();
if (lastSet == null)
{
_children.Add(range);
return(this);
}
lastSet.With(range);
return(this);
}
/// <summary>
/// Performs range syntactical analysis over collection of <see cref="Token"/> objects using <see cref="IStatedTwoWayEnumerator{T}"/>.
/// </summary>
/// <param name="enumerator">Extended enumerator of collection of <see cref="Token"/> objects.</param>
/// <param name="expression">Output parsed range if syntactic analysis was succeeded.</param>
/// <returns><value>True</value> if succeeded. <value>False</value> if failed.</returns>
internal static bool TryParseRange(IStatedTwoWayEnumerator <Token> enumerator, out MdxExpressionBase expression)
{
enumerator.SavePosition();
expression = null;
var range = new MdxRange();
MdxExpressionBase fromMember;
if (!TryParseMember(enumerator, out fromMember))
{
enumerator.RestoreLastSavedPosition();
return(false);
}
if (!IsNextTokenValid(enumerator, TokenType.RangeSeparator))
{
enumerator.RestoreLastSavedPosition();
return(false);
}
range.From((MdxMember)fromMember);
MdxExpressionBase toMember;
if (!TryParseMember(enumerator, out toMember))
{
enumerator.RestoreLastSavedPosition();
return(false);
}
range.To((MdxMember)toMember);
expression = range;
enumerator.RemoveLastSavedState();
return(true);
}
/// <summary>
/// Performs range syntactical analysis over collection of <see cref="Token"/> objects using <see cref="IStatedTwoWayEnumerator{T}"/>.
/// </summary>
/// <param name="enumerator">Extended enumerator of collection of <see cref="Token"/> objects.</param>
/// <param name="expression">Output parsed range if syntactic analysis was succeeded.</param>
/// <returns><value>True</value> if succeeded. <value>False</value> if failed.</returns>
internal static bool TryParseRange(IStatedTwoWayEnumerator<Token> enumerator, out MdxExpressionBase expression)
{
enumerator.SavePosition();
expression = null;
var range = new MdxRange();
MdxExpressionBase fromMember;
if (!TryParseMember(enumerator, out fromMember))
{
enumerator.RestoreLastSavedPosition();
return false;
}
if (!IsNextTokenValid(enumerator, TokenType.RangeSeparator))
{
enumerator.RestoreLastSavedPosition();
return false;
}
range.From((MdxMember)fromMember);
MdxExpressionBase toMember;
if (!TryParseMember(enumerator, out toMember))
{
enumerator.RestoreLastSavedPosition();
return false;
}
range.To((MdxMember) toMember);
expression = range;
enumerator.RemoveLastSavedState();
return true;
}
