public object PrecedenceTesting(string expression)
{
IParser parser = Factory.Instance.Create();
IToken token = parser.Compile(expression);
return(token.EvalValue(null));
}
public void ParsingFailure(string expression, Type errType)
{
TestDelegate handler = new TestDelegate(() => {
IParser parser = Factory.Instance.Create();
IToken token = parser.Compile(expression);
token.EvalValue(null);
});
Assert.Throws(errType, handler);
}
public object StringLiteralEvalTest(string text, int start, string className)
{
IToken token = (IToken)Activator.CreateInstance(Type.GetType(className));
int next;
if (token.Match(text, start, out next))
{
return(token.EvalValue(null));
}
else
{
return(null);
}
}
public object Eval(IToken token, Func <string, object> context)
{
return(token.EvalValue(context));
}
public object Eval(IToken token, Func<string, object> context)
{
return token.EvalValue(context);
}