private static double EvaluateSuccess(string input)
{
var evaluator = new StringEvaluator();
var result = evaluator.Evaluate(input);
result.IsSuccessful.Should().BeTrue();
return(result.Result);
}
public static T Evaluate <T>(RPNExpression expression)
{
try
{
var context = new RPNContext(expression);
while (context.CanMove)
{
context.MoveNext();
if (DefaultEvaluator.Evaluate(context))
{
continue;
}
if (BasicEvaluator.Evaluate(context))
{
continue;
}
if (MathEvaluator.Evaluate(context))
{
continue;
}
if (LogicEvaluator.Evaluate(context))
{
continue;
}
if (StringEvaluator.Evaluate(context))
{
continue;
}
if (RegexEvaluator.Evaluate(context))
{
continue;
}
if (DateTimeEvaluator.Evaluate(context))
{
continue;
}
if (ControlEvaluator.Evaluate <T>(context))
{
continue;
}
context.Stack.Push(context.Current);
}
return(context.GetResult <T>());
}
catch (RPNException)
{
throw;
}
catch
{
throw new ParsingException(expression.Expression);
}
}
public void Variable_not_found()
{
var sut = new StringEvaluator();
var dict = new Dictionary <string, object>();
var actual = sut.Evaluate("This will {fail}", dict);
var expected = Either.Error <RuntimeErrors, string>(new RuntimeErrors(new ReferenceToUnsetVariable("fail")));
actual.Should().BeEquivalentTo(expected, options => options
.ComparingByMembers(typeof(Either <,>))
.ComparingByMembers(typeof(Option <RuntimeErrors>)));
}
public void All_variables_should_be_found()
{
var sut = new StringEvaluator();
var dict = new Dictionary <string, object>
{
{ "replaced", "mate" },
{ "replaced_between_braces", "boy!" },
{ "non_replaced", "will not appear on resulting string" },
};
var actual = sut.Evaluate("Hello {replaced}, {{non_replaced}}, {{{replaced_between_braces}}}", dict);
var expected = Either.Success <RuntimeErrors, string>("Hello mate, {non_replaced}, {boy!}");
actual.Should().BeEquivalentTo(expected);
}