PowerArgs.ArgRequiredConditionalHook.Evaluate C# (CSharp) Method

        private void Evaluate(ArgHook.HookContext context, string expressionText, bool not)
        {
            try
            {
                var newExpressionText = expressionText;
                if(not)
                {
                    newExpressionText = "!(" + expressionText + ")";
                }

                var expression = BooleanExpressionParser.Parse(newExpressionText);
                var eval = expression.Evaluate(context.Definition.CreateVariableResolver());

                if(not)
                {
                    if (eval == true && context.CurrentArgument.RevivedValue == null)
                    {
                        if (TryPreventExceptionWithPrompt(context) == false)
                        {
                            throw new MissingArgException("The argument '" + context.CurrentArgument.DefaultAlias + "' is required if the following argument(s) are not specified: " + expressionText);
                        }
                    }
                }
                else
                {
                    if (eval == true && context.CurrentArgument.RevivedValue == null)
                    {
                        if (TryPreventExceptionWithPrompt(context) == false)
                        {
                            throw new MissingArgException("The argument '" + context.CurrentArgument.DefaultAlias + "' is required if the following argument(s) are specified: " + expressionText);
                        }
                    }
                }
            }
            catch(MissingArgException)
            {
                throw;
            }
            catch(REPLContinueException)
            {
                throw;
            }
            catch (Exception ex)
            {
                var targetText = context.CurrentArgument.DefaultAlias + " (" + expressionText + ")";
                throw new InvalidArgDefinitionException("Failed to evaluate conditional ArgRequired clause on target '" + targetText + "'" + ex.Message);
            }
        }