/// Get the first parameter even if it is wrapped in a parameterList
private static EncapsulatedData GetFirstParameter(EncapsulatedData inputData)
{
if (inputData.type == DataType.ParameterList)
{
return(inputData.parameterList.First.Value);
}
else
{
return(inputData);
}
}
/// Throw an exception if the function's parameter count doesn't match the expected.
private static void CheckParameterCount(EncapsulatedData inputData, int expectedCount)
{
int realCount = inputData.type == DataType.ParameterList ? inputData.parameterList.Count : 1;
if (realCount != expectedCount)
{
throw new Exception(
String.Format(
"ParameterCountError: {0} parameters expected, {1} found.",
expectedCount,
realCount));
}
}
public static EncapsulatedData Evaluate(string functionName, EncapsulatedData parameters)
{
// NOTE parameters.type is not always parameterList.
// SubExpressions following single-parameter functions evaluate to EncapsulatedData with a different type.
return(FunctionLibrary[functionName](parameters));
}
public SubExpression(EncapsulatedData Evaluated)
{
this.EvaluatedValue = Evaluated;
}
public SubExpression(string functionName, EncapsulatedData parameterList)
{
// if it is initialized with a string and EncapsulatedData, it is a functioncall which was parsed.
this.functionName = functionName;
this.parameterList = parameterList;
}