/// <summary>
/// Function that receives a <see cref="TypeTypeOperator"/> object and returns the
/// resulting data type of combining the given types with the given operator.
/// Called by <see cref="QuadrupleManager"/> to get the resulting data type of two operands
/// and an operator.
/// </summary>
/// <param name="tto"></param>
/// <returns>A <see cref="SemanticCubeUtilities.DataTypes"/> type.</returns>
public static SemanticCubeUtilities.DataTypes AnalyzeSemantics(TypeTypeOperator tto)
{
// handle the negative operator as a special case since it only uses one operand
if (tto.GetOperator() == SemanticCubeUtilities.Operators.negative)
{
if (Cube.TryGetValue(tto, out SemanticCubeUtilities.DataTypes resultType))
{
return(resultType);
}
else
{
return(SemanticCubeUtilities.DataTypes.invalidDataType);
}
}
if (tto.GetDataTypeOne().Equals(SemanticCubeUtilities.DataTypes.invalidDataType) ||
tto.GetDataTypeTwo().Equals(SemanticCubeUtilities.DataTypes.invalidDataType) ||
tto.GetOperator().Equals(SemanticCubeUtilities.Operators.invalidOperator))
{
return(SemanticCubeUtilities.DataTypes.invalidDataType);
}
SemanticCubeUtilities.DataTypes type;
if (Cube.TryGetValue(tto, out type))
{
return(type);
}
else
{
throw new Exception(String.Format("The specified key <{0},{1},{2}> was not found in the Semantic Cube",
tto.GetDataTypeOne(), tto.GetDataTypeTwo(), tto.GetOperator()));
}
}
/// <summary>
/// Overrides <see cref="object.Equals(object)"/>'s definition. Two <see cref="TypeTypeOperator"/> objects are equal
/// if the two hold the same <see cref="SemanticCubeUtilities.DataTypes"/> and the same <see cref="SemanticCubeUtilities.Operators"/>.
/// Called every time two <see cref="TypeTypeOperator"/> objects are compared in the Semantic Cube.
/// </summary>
/// <param name="obj"></param>
/// <returns>
/// A boolean stating whether two <see cref="TypeTypeOperator"/> objects are equal or not.
/// </returns>
public override bool Equals(object obj)
{
TypeTypeOperator tto = obj as TypeTypeOperator;
return((tto.GetDataTypeOne() == DataTypeOne) &&
(tto.GetDataTypeTwo() == DataTypeTwo) &&
(tto.GetOperator() == Operator));
}
