public override string RunSample(RunSampleArgs args)
{
if (_evaluator == null)
{
_evaluator = new ExpressionEvaluator(this);
}
_evaluator.ClearOutput();
//for (int i = 0; i < 1000; i++) //for perf measurements, to execute 1000 times
_evaluator.Evaluate(args.ParsedSample);
return(_evaluator.GetOutput());
}
public override string RunSample(RunSampleArgs args)
{
if (_evaluator == null)
{
_evaluator = new ExpressionEvaluator(this);
_evaluator.Globals.Add("null", _evaluator.Runtime.NoneValue);
_evaluator.Globals.Add("true", true);
_evaluator.Globals.Add("false", false);
}
_evaluator.ClearOutput();
//for (int i = 0; i < 1000; i++) //for perf measurements, to execute 1000 times
_evaluator.Evaluate(args.ParsedSample);
return(_evaluator.GetOutput());
}
public void TestEvaluator_BuiltIns() {
var eval = new ExpressionEvaluator();
string script;
object result;
//Using methods imported from System.Math class
script = @"abs(-1.0) + Log10(100.0) + sqrt(9) + floor(4.5) + sin(PI/2)";
result = eval.Evaluate(script);
Assert.IsTrue(result is double, "Result is not double.");
Assert.AreEqual(11.0, (double) result, 0.001, "Unexpected computation result");
//Using methods imported from System.Environment
script = @"report = '#{MachineName}-#{OSVersion}-#{UserName}'";
result = eval.Evaluate(script);
var expected = string.Format("{0}-{1}-{2}", Environment.MachineName, Environment.OSVersion, Environment.UserName);
Assert.AreEqual(expected, result, "Unexpected computation result");
//Using special built-in methods print and format
eval.ClearOutput();
script = @"print(format('{0} * {1} = {2}', 3, 4, 3 * 4))";
eval.Evaluate(script);
result = eval.GetOutput();
Assert.AreEqual("3 * 4 = 12\r\n", result, "Unexpected computation result");
//Add custom built-in method SayHello and test it
eval.Runtime.BuiltIns.AddMethod(SayHello, "SayHello", 1, 1, "name");
script = @"SayHello('John')";
result = eval.Evaluate(script);
Assert.AreEqual("Hello, John!", result, "Unexpected computation result");
}