/// <summary>
/// Evaluation of expression: reads the value of the variable from the given context.
/// </summary>
/// <param name="context">The context.</param>
/// <returns></returns>
/// <exception cref="LocateableException">Unknown field!</exception>
public object Evaluate(IEvaluationScope context)
{
if (!context.TryGetVariable(Identifier, out IVariableDefinition nameable))
{
throw new LocateableException(Location, "Unknown field!");
}
return(nameable.Value);
}
/// <summary>
/// Lookup THIS
/// </summary>
/// <param name="this"></param>
/// <param name="variable"></param>
/// <returns></returns>
public static bool TryGetThis(this IEvaluationScope @this, out IVariableDefinition variable)
{
return(@this.TryGetVariable(ThisName, out variable));
}