/// <summary>
/// Performs function 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 function if syntactic analysis was succeeded.</param>
/// <returns><value>True</value> if succeeded. <value>False</value> if failed.</returns>
internal static bool TryParseFunction(IStatedTwoWayEnumerator<Token> enumerator, out MdxExpressionBase expression)
{
enumerator.SavePosition();
expression = null;
var function = Mdx.Function();
do
{
if (!IsNextTokenValid(enumerator, TokenType.TitleExpression))
{
enumerator.RestoreLastSavedPosition();
return false;
}
function.Titled(enumerator.Current.Value);
} while (IsNextTokenValid(enumerator, TokenType.IdentifierSeparator));
if (!IsNextTokenValid(enumerator, TokenType.LeftRoundBracket))
{
enumerator.RestoreLastSavedPosition();
return false;
}
if (IsNextTokenValid(enumerator, TokenType.RightRoundBracket))
{
expression = function;
enumerator.RemoveLastSavedState();
return true;
}
do
{
MdxExpressionBase childExpression;
if (!TryParseExpression(enumerator, out childExpression))
{
enumerator.RestoreLastSavedPosition();
return false;
}
function.WithParameters((MdxExpression)childExpression);
} while (IsNextTokenValid(enumerator, TokenType.MemberSeparator));
if (!IsNextTokenValid(enumerator, TokenType.RightRoundBracket))
{
enumerator.RestoreLastSavedPosition();
return false;
}
expression = function;
enumerator.RemoveLastSavedState();
return true;
}
/// <summary>
/// Performs cube 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 cube if syntactic analysis was succeeded.</param>
/// <returns><value>True</value> if succeeded. <value>False</value> if failed.</returns>
internal static bool TryParseCube(IStatedTwoWayEnumerator<Token> enumerator, out MdxExpressionBase expression)
{
enumerator.SavePosition();
expression = null;
var cube = Mdx.Cube();
do
{
if (!IsNextTokenValid(enumerator, TokenType.IdentifierExpression))
{
enumerator.RestoreLastSavedPosition();
return false;
}
string cubeTitleWithBrackets = enumerator.Current.Value;
string cubeTitle = cubeTitleWithBrackets.Substring(1, cubeTitleWithBrackets.Length - 2);
cube.Titled(cubeTitle);
} while (IsNextTokenValid(enumerator, TokenType.IdentifierSeparator));
expression = cube;
enumerator.RemoveLastSavedState();
return true;
}
/// <summary>
/// Performs expression 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 expression if syntactic analysis was succeeded.</param>
/// <returns><value>True</value> if succeeded. <value>False</value> if failed.</returns>
internal static bool TryParseExpression(IStatedTwoWayEnumerator<Token> enumerator, out MdxExpressionBase expression)
{
enumerator.SavePosition();
expression = null;
var mdxExpression = Mdx.Expression();
//TODO: Think how to apply NOT and -
do
{
MdxExpressionBase childExpression;
if (TryParseFunction(enumerator, out childExpression))
{
mdxExpression.WithOperand((MdxFunction) childExpression);
}
else if (TryParseTuple(enumerator, out childExpression))
{
mdxExpression.WithOperand((MdxTuple)childExpression);
}
else if (TryParseSet(enumerator, out childExpression))
{
mdxExpression.WithOperand((MdxSet)childExpression);
}
else if (TryParseRange(enumerator, out childExpression))
{
mdxExpression.WithOperand((MdxRange)childExpression);
}
else if (TryParseMember(enumerator, out childExpression))
{
mdxExpression.WithOperand((MdxMember)childExpression);
}
else if (TryParseConstantValue(enumerator, out childExpression))
{
mdxExpression.WithOperand((MdxConstantExpression)childExpression);
}
else if (IsNextTokenValid(enumerator, TokenType.NotOperator))
{
if (!TryParseExpression(enumerator, out childExpression))
{
enumerator.RestoreLastSavedPosition();
return false;
}
mdxExpression.WithOperand(((MdxExpression)childExpression).AsNegated());
}
else if (IsNextTokenValid(enumerator, TokenType.LeftRoundBracket))
{
if (!TryParseExpression(enumerator, out childExpression))
{
enumerator.RestoreLastSavedPosition();
return false;
}
mdxExpression.WithOperand((MdxExpression)childExpression);
if (!IsNextTokenValid(enumerator, TokenType.RightRoundBracket))
{
enumerator.RestoreLastSavedPosition();
return false;
}
}
else
{
enumerator.RestoreLastSavedPosition();
return false;
}
if (!IsNextTokenValid(enumerator, TokenType.MathsOperator) &&
!IsNextTokenValid(enumerator, TokenType.LogicsOperator))
break;
mdxExpression.WithOperator(enumerator.Current.Value);
} while (true);
expression = mdxExpression;
enumerator.RemoveLastSavedState();
return true;
}
internal static bool TryParseWithDeclaration(IStatedTwoWayEnumerator <Token> enumerator, out MdxExpressionBase expression)
{
enumerator.SavePosition();
expression = null;
var declaration = Mdx.Declaration();
if (!IsNextTokenValid(enumerator, TokenType.Member) &&
!IsNextTokenValid(enumerator, TokenType.Set))
{
enumerator.RestoreLastSavedPosition();
return(false);
}
do
{
if (!IsNextTokenValid(enumerator, TokenType.IdentifierExpression))
{
enumerator.RestoreLastSavedPosition();
return(false);
}
string identifierWithBrackets = enumerator.Current.Value;
string identifierTitle = identifierWithBrackets.Substring(1, identifierWithBrackets.Length - 2);
declaration.Titled(identifierTitle);
} while (IsNextTokenValid(enumerator, TokenType.IdentifierSeparator));
if (!IsNextTokenValid(enumerator, TokenType.As))
{
enumerator.RestoreLastSavedPosition();
return(false);
}
MdxExpressionBase declarationExpression;
if (TryParseTuple(enumerator, out declarationExpression))
{
declaration.As((MdxTuple)declarationExpression);
}
else if (TryParseExpression(enumerator, out declarationExpression))
{
declaration.As((MdxExpression)declarationExpression);
}
else
{
enumerator.RestoreLastSavedPosition();
return(false);
}
expression = declaration;
enumerator.RemoveLastSavedState();
return(true);
}
/// <summary>
/// Performs constant value 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 constant value if syntactic analysis was succeeded.</param>
/// <returns><value>True</value> if succeeded. <value>False</value> if failed.</returns>
internal static bool TryParseConstantValue(IStatedTwoWayEnumerator<Token> enumerator, out MdxExpressionBase expression)
{
enumerator.SavePosition();
expression = null;
var constantValue = Mdx.ConstantValue();
if (!IsNextTokenValid(enumerator, TokenType.LogicalExpression) &&
!IsNextTokenValid(enumerator, TokenType.DateExpression) &&
!IsNextTokenValid(enumerator, TokenType.TitleExpression) &&
!IsNextTokenValid(enumerator, TokenType.NumberExpression) &&
!IsNextTokenValid(enumerator, TokenType.AnyExpression) &&
!IsNextTokenValid(enumerator, TokenType.Ordering))
{
enumerator.RestoreLastSavedPosition();
return false;
}
string constantVal = enumerator.Current.Value;
if (IsNextTokenValid(enumerator, TokenType.AnyExpression))
constantVal += enumerator.Current.Value;
constantValue.WithValue(constantVal);
expression = constantValue;
enumerator.RemoveLastSavedState();
return true;
}
/// <summary>
/// Performs query 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 query if syntactic analysis was succeeded.</param>
/// <returns><value>True</value> if succeeded. <value>False</value> if failed.</returns>
internal static bool TryParseQuery(IStatedTwoWayEnumerator<Token> enumerator, out MdxExpressionBase expression)
{
enumerator.SavePosition();
expression = null;
var query = Mdx.Query();
if (IsNextTokenValid(enumerator, TokenType.With))
{
MdxExpressionBase declaration;
if (!TryParseWithDeclaration(enumerator, out declaration))
{
enumerator.RestoreLastSavedPosition();
return false;
}
query.With((MdxDeclaration)declaration);
while (TryParseWithDeclaration(enumerator, out declaration))
{
query.With((MdxDeclaration)declaration);
}
}
if (!IsNextTokenValid(enumerator, TokenType.Select))
{
enumerator.RestoreLastSavedPosition();
return false;
}
do
{
MdxExpressionBase childExpression;
if (!TryParseAxis(enumerator, out childExpression))
{
enumerator.RestoreLastSavedPosition();
return false;
}
query.On((MdxAxis)childExpression);
} while (IsNextTokenValid(enumerator, TokenType.MemberSeparator));
if (!IsNextTokenValid(enumerator, TokenType.From))
{
enumerator.RestoreLastSavedPosition();
return false;
}
if (IsNextTokenValid(enumerator, TokenType.LeftRoundBracket))
{
MdxExpressionBase innerQuery;
if (!TryParseQuery(enumerator, out innerQuery))
{
enumerator.RestoreLastSavedPosition();
return false;
}
query.From((MdxQuery) innerQuery);
if (!IsNextTokenValid(enumerator, TokenType.RightRoundBracket))
{
enumerator.RestoreLastSavedPosition();
return false;
}
}
else
{
do
{
MdxExpressionBase childExpression;
if (!TryParseCube(enumerator, out childExpression))
{
enumerator.RestoreLastSavedPosition();
return false;
}
query.From((MdxCube)childExpression);
} while (IsNextTokenValid(enumerator, TokenType.MemberSeparator));
}
if (!IsNextTokenValid(enumerator, TokenType.Where))
{
expression = query;
enumerator.RemoveLastSavedState();
return true;
}
MdxExpressionBase slicer;
if (TryParseRange(enumerator, out slicer))
{
query.Where(Mdx.Tuple().With((MdxRange)slicer));
}
else if (TryParseMember(enumerator, out slicer))
{
query.Where(Mdx.Tuple().With((MdxMember)slicer));
}
else if (TryParseSet(enumerator, out slicer))
{
query.Where(Mdx.Tuple().With((MdxSet)slicer));
}
else if (TryParseTuple(enumerator, out slicer))
{
query.Where((MdxTuple)slicer);
}
else if (TryParseFunction(enumerator, out slicer))
{
query.Where((MdxTuple) slicer);
}
else
{
enumerator.RestoreLastSavedPosition();
return false;
}
expression = query;
enumerator.RemoveLastSavedState();
return true;
}
/// <summary>
/// Performs tuple 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 tuple if syntactic analysis was succeeded.</param>
/// <returns><value>True</value> if succeeded. <value>False</value> if failed.</returns>
internal static bool TryParseTuple(IStatedTwoWayEnumerator<Token> enumerator, out MdxExpressionBase expression)
{
enumerator.SavePosition();
expression = null;
if (!IsNextTokenValid(enumerator, TokenType.LeftCurlyBracket))
{
enumerator.RestoreLastSavedPosition();
return false;
}
var tuple = Mdx.Tuple();
if (IsNextTokenValid(enumerator, TokenType.RightCurlyBracket))
{
expression = tuple;
enumerator.RemoveLastSavedState();
return true;
}
do
{
MdxExpressionBase childExpression;
if (TryParseRange(enumerator, out childExpression))
{
tuple.With((MdxRange)childExpression);
}
else if (TryParseMember(enumerator, out childExpression))
{
tuple.With((MdxMember)childExpression);
}
else if (TryParseTuple(enumerator, out childExpression))
{
tuple.With((MdxTuple)childExpression);
}
else if (TryParseSet(enumerator, out childExpression))
{
tuple.With((MdxSet)childExpression);
}
else if (TryParseFunction(enumerator, out childExpression))
{
tuple.With((MdxFunction) childExpression);
}
else
{
enumerator.RestoreLastSavedPosition();
return false;
}
} while (IsNextTokenValid(enumerator, TokenType.MemberSeparator));
if (!IsNextTokenValid(enumerator, TokenType.RightCurlyBracket))
{
enumerator.RestoreLastSavedPosition();
return false;
}
expression = tuple;
enumerator.RemoveLastSavedState();
return true;
}
/// <summary>
/// Performs navigation function 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 navigation function if syntactic analysis was succeeded.</param>
/// <returns><value>True</value> if succeeded. <value>False</value> if failed.</returns>
internal static bool TryParseNavigationFunction(IStatedTwoWayEnumerator <Token> enumerator, out MdxExpressionBase expression)
{
enumerator.SavePosition();
expression = null;
var navigationFunction = Mdx.NavigationFunction();
if (!IsNextTokenValid(enumerator, TokenType.TitleExpression) &&
!IsNextTokenValid(enumerator, TokenType.DimensionProperty))
{
enumerator.RestoreLastSavedPosition();
return(false);
}
navigationFunction.Titled(enumerator.Current.Value);
if (!IsNextTokenValid(enumerator, TokenType.LeftRoundBracket))
{
expression = navigationFunction;
enumerator.RemoveLastSavedState();
return(true);
}
do
{
if (!IsNextTokenValid(enumerator, TokenType.LogicalExpression) &&
!IsNextTokenValid(enumerator, TokenType.DateExpression) &&
!IsNextTokenValid(enumerator, TokenType.NumberExpression) &&
!IsNextTokenValid(enumerator, TokenType.AnyExpression) &&
!IsNextTokenValid(enumerator, TokenType.MathsOperator))
{
enumerator.RestoreLastSavedPosition();
return(false);
}
var functionParametersValue = enumerator.Current.Value;
if (IsNextTokenValid(enumerator, TokenType.AnyExpression))
{
functionParametersValue += enumerator.Current.Value;
}
navigationFunction.WithParameters(functionParametersValue);
} while (IsNextTokenValid(enumerator, TokenType.MemberSeparator));
if (!IsNextTokenValid(enumerator, TokenType.RightRoundBracket))
{
enumerator.RestoreLastSavedPosition();
return(false);
}
expression = navigationFunction;
enumerator.RemoveLastSavedState();
return(true);
}
/// <summary>
/// Performs function 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 function if syntactic analysis was succeeded.</param>
/// <returns><value>True</value> if succeeded. <value>False</value> if failed.</returns>
internal static bool TryParseFunction(IStatedTwoWayEnumerator <Token> enumerator, out MdxExpressionBase expression)
{
enumerator.SavePosition();
expression = null;
var function = Mdx.Function();
do
{
if (!IsNextTokenValid(enumerator, TokenType.TitleExpression))
{
enumerator.RestoreLastSavedPosition();
return(false);
}
function.Titled(enumerator.Current.Value);
} while (IsNextTokenValid(enumerator, TokenType.IdentifierSeparator));
if (!IsNextTokenValid(enumerator, TokenType.LeftRoundBracket))
{
enumerator.RestoreLastSavedPosition();
return(false);
}
if (IsNextTokenValid(enumerator, TokenType.RightRoundBracket))
{
expression = function;
enumerator.RemoveLastSavedState();
return(true);
}
do
{
MdxExpressionBase childExpression;
if (!TryParseExpression(enumerator, out childExpression))
{
enumerator.RestoreLastSavedPosition();
return(false);
}
function.WithParameters((MdxExpression)childExpression);
} while (IsNextTokenValid(enumerator, TokenType.MemberSeparator));
if (!IsNextTokenValid(enumerator, TokenType.RightRoundBracket))
{
enumerator.RestoreLastSavedPosition();
return(false);
}
expression = function;
enumerator.RemoveLastSavedState();
return(true);
}
/// <summary>
/// Performs axis 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 axis if syntactic analysis was succeeded.</param>
/// <returns><value>True</value> if succeeded. <value>False</value> if failed.</returns>
internal static bool TryParseAxis(IStatedTwoWayEnumerator <Token> enumerator, out MdxExpressionBase expression)
{
enumerator.SavePosition();
expression = null;
var axis = Mdx.Axis();
if (IsNextTokenValid(enumerator, TokenType.Non))
{
if (!IsNextTokenValid(enumerator, TokenType.Empty))
{
enumerator.RestoreLastSavedPosition();
return(false);
}
axis.AsNonEmpty();
}
MdxExpressionBase slicer;
if (TryParseTuple(enumerator, out slicer))
{
axis.WithSlicer((MdxTuple)slicer);
}
else if (TryParseSet(enumerator, out slicer))
{
axis.WithSlicer(Mdx.Tuple().With((MdxSet)slicer));
}
else if (TryParseRange(enumerator, out slicer))
{
axis.WithSlicer(Mdx.Tuple().With((MdxRange)slicer));
}
else if (TryParseMember(enumerator, out slicer))
{
axis.WithSlicer(Mdx.Tuple().With((MdxMember)slicer));
}
else if (TryParseFunction(enumerator, out slicer))
{
axis.WithSlicer(Mdx.Tuple().With((MdxFunction)slicer));
}
else
{
enumerator.RestoreLastSavedPosition();
return(false);
}
if (IsNextTokenValid(enumerator, TokenType.Dimension))
{
if (!IsNextTokenValid(enumerator, TokenType.Properties))
{
enumerator.RestoreLastSavedPosition();
return(false);
}
do
{
if (!IsNextTokenValid(enumerator, TokenType.DimensionProperty))
{
enumerator.RestoreLastSavedPosition();
return(false);
}
axis.WithProperties(enumerator.Current.Value);
} while (IsNextTokenValid(enumerator, TokenType.MemberSeparator));
}
else if (IsNextTokenValid(enumerator, TokenType.Properties))
{
do
{
if (!IsNextTokenValid(enumerator, TokenType.DimensionProperty))
{
enumerator.RestoreLastSavedPosition();
return(false);
}
axis.WithProperties(enumerator.Current.Value);
} while (IsNextTokenValid(enumerator, TokenType.MemberSeparator));
}
if (!IsNextTokenValid(enumerator, TokenType.On))
{
enumerator.RestoreLastSavedPosition();
return(false);
}
if (!IsNextTokenValid(enumerator, TokenType.AxisNameIdentifier) &&
!IsNextTokenValid(enumerator, TokenType.NumberExpression))
{
enumerator.RestoreLastSavedPosition();
return(false);
}
string axisName = enumerator.Current.Value;
axis.Titled(axisName);
expression = axis;
enumerator.RemoveLastSavedState();
return(true);
}
/// <summary>
/// Performs cube 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 cube if syntactic analysis was succeeded.</param>
/// <returns><value>True</value> if succeeded. <value>False</value> if failed.</returns>
internal static bool TryParseCube(IStatedTwoWayEnumerator <Token> enumerator, out MdxExpressionBase expression)
{
enumerator.SavePosition();
expression = null;
var cube = Mdx.Cube();
do
{
if (!IsNextTokenValid(enumerator, TokenType.IdentifierExpression))
{
enumerator.RestoreLastSavedPosition();
return(false);
}
string cubeTitleWithBrackets = enumerator.Current.Value;
string cubeTitle = cubeTitleWithBrackets.Substring(1, cubeTitleWithBrackets.Length - 2);
cube.Titled(cubeTitle);
} while (IsNextTokenValid(enumerator, TokenType.IdentifierSeparator));
expression = cube;
enumerator.RemoveLastSavedState();
return(true);
}
/// <summary>
/// Performs member 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 member if syntactic analysis was succeeded.</param>
/// <returns><value>True</value> if succeeded. <value>False</value> if failed.</returns>
internal static bool TryParseMember(IStatedTwoWayEnumerator <Token> enumerator, out MdxExpressionBase expression)
{
enumerator.SavePosition();
expression = null;
var member = Mdx.Member();
if (!IsNextTokenValid(enumerator, TokenType.IdentifierExpression))
{
enumerator.RestoreLastSavedPosition();
return(false);
}
string identifierWithBrackets = enumerator.Current.Value;
string identifierTitle = identifierWithBrackets.Substring(1, identifierWithBrackets.Length - 2);
member.Titled(identifierTitle);
while (IsNextTokenValid(enumerator, TokenType.IdentifierSeparator))
{
MdxExpressionBase function;
if (TryParseNavigationFunction(enumerator, out function))
{
member.WithFunction((MdxNavigationFunction)function);
continue;
}
if (!IsNextTokenValid(enumerator, TokenType.IdentifierExpression))
{
enumerator.RestoreLastSavedPosition();
return(false);
}
identifierWithBrackets = enumerator.Current.Value;
identifierTitle = identifierWithBrackets.Substring(1, identifierWithBrackets.Length - 2);
member.Titled(identifierTitle);
}
if (!IsNextTokenValid(enumerator, TokenType.ValueSeparator))
{
expression = member;
enumerator.RemoveLastSavedState();
return(true);
}
if (!IsNextTokenValid(enumerator, TokenType.IdentifierExpression))
{
enumerator.RestoreLastSavedPosition();
return(false);
}
string valueWithBrackets = enumerator.Current.Value;
string value = valueWithBrackets.Substring(1, valueWithBrackets.Length - 2);
member.WithValue(value);
while (IsNextTokenValid(enumerator, TokenType.IdentifierSeparator))
{
MdxExpressionBase function;
if (!TryParseNavigationFunction(enumerator, out function))
{
enumerator.RestoreLastSavedPosition();
return(false);
}
member.WithFunction((MdxNavigationFunction)function);
}
expression = member;
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);
}
/// <summary>
/// Performs set 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 set if syntactic analysis was succeeded.</param>
/// <returns><value>True</value> if succeeded. <value>False</value> if failed.</returns>
internal static bool TryParseSet(IStatedTwoWayEnumerator <Token> enumerator, out MdxExpressionBase expression)
{
enumerator.SavePosition();
expression = null;
if (!IsNextTokenValid(enumerator, TokenType.LeftRoundBracket))
{
enumerator.RestoreLastSavedPosition();
return(false);
}
var set = Mdx.Set();
if (IsNextTokenValid(enumerator, TokenType.RightRoundBracket))
{
expression = set;
enumerator.RemoveLastSavedState();
return(true);
}
do
{
MdxExpressionBase childExpression;
if (TryParseRange(enumerator, out childExpression))
{
set.With((MdxRange)childExpression);
}
else if (TryParseMember(enumerator, out childExpression))
{
set.With((MdxMember)childExpression);
}
else if (TryParseTuple(enumerator, out childExpression))
{
set.With((MdxTuple)childExpression);
}
else if (TryParseSet(enumerator, out childExpression))
{
set.With((MdxSet)childExpression);
}
else if (TryParseFunction(enumerator, out childExpression))
{
set.With((MdxFunction)childExpression);
}
else
{
enumerator.RestoreLastSavedPosition();
return(false);
}
} while (IsNextTokenValid(enumerator, TokenType.MemberSeparator));
if (!IsNextTokenValid(enumerator, TokenType.RightRoundBracket))
{
enumerator.RestoreLastSavedPosition();
return(false);
}
expression = set;
enumerator.RemoveLastSavedState();
return(true);
}
/// <summary>
/// Performs member 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 member if syntactic analysis was succeeded.</param>
/// <returns><value>True</value> if succeeded. <value>False</value> if failed.</returns>
internal static bool TryParseMember(IStatedTwoWayEnumerator<Token> enumerator, out MdxExpressionBase expression)
{
enumerator.SavePosition();
expression = null;
var member = Mdx.Member();
if (!IsNextTokenValid(enumerator, TokenType.IdentifierExpression))
{
enumerator.RestoreLastSavedPosition();
return false;
}
string identifierWithBrackets = enumerator.Current.Value;
string identifierTitle = identifierWithBrackets.Substring(1, identifierWithBrackets.Length - 2);
member.Titled(identifierTitle);
while (IsNextTokenValid(enumerator, TokenType.IdentifierSeparator))
{
MdxExpressionBase function;
if (TryParseNavigationFunction(enumerator, out function))
{
member.WithFunction((MdxNavigationFunction)function);
continue;
}
if (!IsNextTokenValid(enumerator, TokenType.IdentifierExpression))
{
enumerator.RestoreLastSavedPosition();
return false;
}
identifierWithBrackets = enumerator.Current.Value;
identifierTitle = identifierWithBrackets.Substring(1, identifierWithBrackets.Length - 2);
member.Titled(identifierTitle);
}
if (!IsNextTokenValid(enumerator, TokenType.ValueSeparator))
{
expression = member;
enumerator.RemoveLastSavedState();
return true;
}
if (!IsNextTokenValid(enumerator, TokenType.IdentifierExpression))
{
enumerator.RestoreLastSavedPosition();
return false;
}
string valueWithBrackets = enumerator.Current.Value;
string value = valueWithBrackets.Substring(1, valueWithBrackets.Length - 2);
member.WithValue(value);
while (IsNextTokenValid(enumerator, TokenType.IdentifierSeparator))
{
MdxExpressionBase function;
if (!TryParseNavigationFunction(enumerator, out function))
{
enumerator.RestoreLastSavedPosition();
return false;
}
member.WithFunction((MdxNavigationFunction) function);
}
expression = member;
enumerator.RemoveLastSavedState();
return true;
}
/// <summary>
/// Performs expression 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 expression if syntactic analysis was succeeded.</param>
/// <returns><value>True</value> if succeeded. <value>False</value> if failed.</returns>
internal static bool TryParseExpression(IStatedTwoWayEnumerator <Token> enumerator, out MdxExpressionBase expression)
{
enumerator.SavePosition();
expression = null;
var mdxExpression = Mdx.Expression();
//TODO: Think how to apply NOT and -
do
{
MdxExpressionBase childExpression;
if (TryParseFunction(enumerator, out childExpression))
{
mdxExpression.WithOperand((MdxFunction)childExpression);
}
else if (TryParseTuple(enumerator, out childExpression))
{
mdxExpression.WithOperand((MdxTuple)childExpression);
}
else if (TryParseSet(enumerator, out childExpression))
{
mdxExpression.WithOperand((MdxSet)childExpression);
}
else if (TryParseRange(enumerator, out childExpression))
{
mdxExpression.WithOperand((MdxRange)childExpression);
}
else if (TryParseMember(enumerator, out childExpression))
{
mdxExpression.WithOperand((MdxMember)childExpression);
}
else if (TryParseConstantValue(enumerator, out childExpression))
{
mdxExpression.WithOperand((MdxConstantExpression)childExpression);
}
else if (IsNextTokenValid(enumerator, TokenType.NotOperator))
{
if (!TryParseExpression(enumerator, out childExpression))
{
enumerator.RestoreLastSavedPosition();
return(false);
}
mdxExpression.WithOperand(((MdxExpression)childExpression).AsNegated());
}
else if (IsNextTokenValid(enumerator, TokenType.LeftRoundBracket))
{
if (!TryParseExpression(enumerator, out childExpression))
{
enumerator.RestoreLastSavedPosition();
return(false);
}
mdxExpression.WithOperand((MdxExpression)childExpression);
if (!IsNextTokenValid(enumerator, TokenType.RightRoundBracket))
{
enumerator.RestoreLastSavedPosition();
return(false);
}
}
else
{
enumerator.RestoreLastSavedPosition();
return(false);
}
if (!IsNextTokenValid(enumerator, TokenType.MathsOperator) &&
!IsNextTokenValid(enumerator, TokenType.LogicsOperator))
{
break;
}
mdxExpression.WithOperator(enumerator.Current.Value);
} while (true);
expression = mdxExpression;
enumerator.RemoveLastSavedState();
return(true);
}
/// <summary>
/// Performs navigation function 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 navigation function if syntactic analysis was succeeded.</param>
/// <returns><value>True</value> if succeeded. <value>False</value> if failed.</returns>
internal static bool TryParseNavigationFunction(IStatedTwoWayEnumerator<Token> enumerator, out MdxExpressionBase expression)
{
enumerator.SavePosition();
expression = null;
var navigationFunction = Mdx.NavigationFunction();
if (!IsNextTokenValid(enumerator, TokenType.TitleExpression) &&
!IsNextTokenValid(enumerator, TokenType.DimensionProperty))
{
enumerator.RestoreLastSavedPosition();
return false;
}
navigationFunction.Titled(enumerator.Current.Value);
if (!IsNextTokenValid(enumerator, TokenType.LeftRoundBracket))
{
expression = navigationFunction;
enumerator.RemoveLastSavedState();
return true;
}
do
{
if (!IsNextTokenValid(enumerator, TokenType.LogicalExpression) &&
!IsNextTokenValid(enumerator, TokenType.DateExpression) &&
!IsNextTokenValid(enumerator, TokenType.NumberExpression) &&
!IsNextTokenValid(enumerator, TokenType.AnyExpression) &&
!IsNextTokenValid(enumerator, TokenType.MathsOperator))
{
enumerator.RestoreLastSavedPosition();
return false;
}
var functionParametersValue = enumerator.Current.Value;
if (IsNextTokenValid(enumerator, TokenType.AnyExpression))
functionParametersValue += enumerator.Current.Value;
navigationFunction.WithParameters(functionParametersValue);
} while (IsNextTokenValid(enumerator, TokenType.MemberSeparator));
if (!IsNextTokenValid(enumerator, TokenType.RightRoundBracket))
{
enumerator.RestoreLastSavedPosition();
return false;
}
expression = navigationFunction;
enumerator.RemoveLastSavedState();
return true;
}
/// <summary>
/// Performs constant value 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 constant value if syntactic analysis was succeeded.</param>
/// <returns><value>True</value> if succeeded. <value>False</value> if failed.</returns>
internal static bool TryParseConstantValue(IStatedTwoWayEnumerator <Token> enumerator, out MdxExpressionBase expression)
{
enumerator.SavePosition();
expression = null;
var constantValue = Mdx.ConstantValue();
if (!IsNextTokenValid(enumerator, TokenType.LogicalExpression) &&
!IsNextTokenValid(enumerator, TokenType.DateExpression) &&
!IsNextTokenValid(enumerator, TokenType.TitleExpression) &&
!IsNextTokenValid(enumerator, TokenType.NumberExpression) &&
!IsNextTokenValid(enumerator, TokenType.AnyExpression) &&
!IsNextTokenValid(enumerator, TokenType.Ordering))
{
enumerator.RestoreLastSavedPosition();
return(false);
}
string constantVal = enumerator.Current.Value;
if (IsNextTokenValid(enumerator, TokenType.AnyExpression))
{
constantVal += enumerator.Current.Value;
}
constantValue.WithValue(constantVal);
expression = constantValue;
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;
}
/// <summary>
/// Performs axis 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 axis if syntactic analysis was succeeded.</param>
/// <returns><value>True</value> if succeeded. <value>False</value> if failed.</returns>
internal static bool TryParseAxis(IStatedTwoWayEnumerator<Token> enumerator, out MdxExpressionBase expression)
{
enumerator.SavePosition();
expression = null;
var axis = Mdx.Axis();
if (IsNextTokenValid(enumerator, TokenType.Non))
{
if (!IsNextTokenValid(enumerator, TokenType.Empty))
{
enumerator.RestoreLastSavedPosition();
return false;
}
axis.AsNonEmpty();
}
MdxExpressionBase slicer;
if (TryParseTuple(enumerator, out slicer))
{
axis.WithSlicer((MdxTuple)slicer);
}
else if (TryParseSet(enumerator, out slicer))
{
axis.WithSlicer(Mdx.Tuple().With((MdxSet)slicer));
}
else if (TryParseRange(enumerator, out slicer))
{
axis.WithSlicer(Mdx.Tuple().With((MdxRange)slicer));
}
else if (TryParseMember(enumerator, out slicer))
{
axis.WithSlicer(Mdx.Tuple().With((MdxMember)slicer));
}
else if (TryParseFunction(enumerator, out slicer))
{
axis.WithSlicer(Mdx.Tuple().With((MdxFunction)slicer));
}
else
{
enumerator.RestoreLastSavedPosition();
return false;
}
if (IsNextTokenValid(enumerator, TokenType.Dimension))
{
if (!IsNextTokenValid(enumerator, TokenType.Properties))
{
enumerator.RestoreLastSavedPosition();
return false;
}
do
{
if (!IsNextTokenValid(enumerator, TokenType.DimensionProperty))
{
enumerator.RestoreLastSavedPosition();
return false;
}
axis.WithProperties(enumerator.Current.Value);
} while (IsNextTokenValid(enumerator, TokenType.MemberSeparator));
}
else if (IsNextTokenValid(enumerator, TokenType.Properties))
{
do
{
if (!IsNextTokenValid(enumerator, TokenType.DimensionProperty))
{
enumerator.RestoreLastSavedPosition();
return false;
}
axis.WithProperties(enumerator.Current.Value);
} while (IsNextTokenValid(enumerator, TokenType.MemberSeparator));
}
if (!IsNextTokenValid(enumerator, TokenType.On))
{
enumerator.RestoreLastSavedPosition();
return false;
}
if (!IsNextTokenValid(enumerator, TokenType.AxisNameIdentifier) &&
!IsNextTokenValid(enumerator, TokenType.NumberExpression))
{
enumerator.RestoreLastSavedPosition();
return false;
}
string axisName = enumerator.Current.Value;
axis.Titled(axisName);
expression = axis;
enumerator.RemoveLastSavedState();
return true;
}
internal static bool TryParseWithDeclaration(IStatedTwoWayEnumerator<Token> enumerator, out MdxExpressionBase expression)
{
enumerator.SavePosition();
expression = null;
var declaration = Mdx.Declaration();
if (!IsNextTokenValid(enumerator, TokenType.Member) &&
!IsNextTokenValid(enumerator, TokenType.Set))
{
enumerator.RestoreLastSavedPosition();
return false;
}
do
{
if (!IsNextTokenValid(enumerator, TokenType.IdentifierExpression))
{
enumerator.RestoreLastSavedPosition();
return false;
}
string identifierWithBrackets = enumerator.Current.Value;
string identifierTitle = identifierWithBrackets.Substring(1, identifierWithBrackets.Length - 2);
declaration.Titled(identifierTitle);
} while (IsNextTokenValid(enumerator, TokenType.IdentifierSeparator));
if (!IsNextTokenValid(enumerator, TokenType.As))
{
enumerator.RestoreLastSavedPosition();
return false;
}
MdxExpressionBase declarationExpression;
if (TryParseTuple(enumerator, out declarationExpression))
{
declaration.As((MdxTuple) declarationExpression);
}
else if (TryParseExpression(enumerator, out declarationExpression))
{
declaration.As((MdxExpression) declarationExpression);
}
else
{
enumerator.RestoreLastSavedPosition();
return false;
}
expression = declaration;
enumerator.RemoveLastSavedState();
return true;
}
/// <summary>
/// Performs query 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 query if syntactic analysis was succeeded.</param>
/// <returns><value>True</value> if succeeded. <value>False</value> if failed.</returns>
internal static bool TryParseQuery(IStatedTwoWayEnumerator <Token> enumerator, out MdxExpressionBase expression)
{
enumerator.SavePosition();
expression = null;
var query = Mdx.Query();
if (IsNextTokenValid(enumerator, TokenType.With))
{
MdxExpressionBase declaration;
if (!TryParseWithDeclaration(enumerator, out declaration))
{
enumerator.RestoreLastSavedPosition();
return(false);
}
query.With((MdxDeclaration)declaration);
while (TryParseWithDeclaration(enumerator, out declaration))
{
query.With((MdxDeclaration)declaration);
}
}
if (!IsNextTokenValid(enumerator, TokenType.Select))
{
enumerator.RestoreLastSavedPosition();
return(false);
}
do
{
MdxExpressionBase childExpression;
if (!TryParseAxis(enumerator, out childExpression))
{
enumerator.RestoreLastSavedPosition();
return(false);
}
query.On((MdxAxis)childExpression);
} while (IsNextTokenValid(enumerator, TokenType.MemberSeparator));
if (!IsNextTokenValid(enumerator, TokenType.From))
{
enumerator.RestoreLastSavedPosition();
return(false);
}
if (IsNextTokenValid(enumerator, TokenType.LeftRoundBracket))
{
MdxExpressionBase innerQuery;
if (!TryParseQuery(enumerator, out innerQuery))
{
enumerator.RestoreLastSavedPosition();
return(false);
}
query.From((MdxQuery)innerQuery);
if (!IsNextTokenValid(enumerator, TokenType.RightRoundBracket))
{
enumerator.RestoreLastSavedPosition();
return(false);
}
}
else
{
do
{
MdxExpressionBase childExpression;
if (!TryParseCube(enumerator, out childExpression))
{
enumerator.RestoreLastSavedPosition();
return(false);
}
query.From((MdxCube)childExpression);
} while (IsNextTokenValid(enumerator, TokenType.MemberSeparator));
}
if (!IsNextTokenValid(enumerator, TokenType.Where))
{
expression = query;
enumerator.RemoveLastSavedState();
return(true);
}
MdxExpressionBase slicer;
if (TryParseRange(enumerator, out slicer))
{
query.Where(Mdx.Tuple().With((MdxRange)slicer));
}
else if (TryParseMember(enumerator, out slicer))
{
query.Where(Mdx.Tuple().With((MdxMember)slicer));
}
else if (TryParseSet(enumerator, out slicer))
{
query.Where(Mdx.Tuple().With((MdxSet)slicer));
}
else if (TryParseTuple(enumerator, out slicer))
{
query.Where((MdxTuple)slicer);
}
else if (TryParseFunction(enumerator, out slicer))
{
query.Where((MdxTuple)slicer);
}
else
{
enumerator.RestoreLastSavedPosition();
return(false);
}
expression = query;
enumerator.RemoveLastSavedState();
return(true);
}
