public void EvaluateWithThisObject()
{
Context context = new Context();
ICommand body = new ReturnCommand(new ArithmeticBinaryExpression(ArithmeticOperator.Add, new VariableExpression("x"), new DotExpression(new VariableExpression("this"), "Age")));
Function function = new Function(new string[] { "x" }, body);
DynamicObject person = new DynamicObject();
person.SetValue("Age", 30);
Assert.AreEqual(40, function.Invoke(context, person, new object[] { 10 }));
}
public void FunctionLength()
{
ICommand body = new ReturnCommand(new VariableExpression("x"));
Function function = new Function(new string[] { "x" }, body);
object result = function.GetValue("length");
Assert.IsNotNull(result);
Assert.AreEqual(1, result);
}
public void InvokeSimpleFunction()
{
ICommand body = new ReturnCommand(new VariableExpression("x"));
Function function = new Function(new string[] { "x" }, body);
Context context = new Context();
context.SetValue("x", 2);
object result = function.Invoke(context, null, new object[] { 1 });
Assert.IsNotNull(result);
Assert.AreEqual(1, result);
}
private static ICallable BuildFactorialFunction(IContext context)
{
IExpression condition = new CompareExpression(ComparisonOperator.LessEqual, new VariableExpression("n"), new ConstantExpression(1));
ICommand return1 = new ReturnCommand(new ConstantExpression(1));
ICommand return2 = new ReturnCommand(new ArithmeticBinaryExpression(ArithmeticOperator.Multiply,
new VariableExpression("n"),
new InvokeExpression(new VariableExpression("Factorial"), new IExpression[] { new ArithmeticBinaryExpression(ArithmeticOperator.Subtract, new VariableExpression("n"), new ConstantExpression(1)) })));
ICommand ifcmd = new IfCommand(condition, return1, return2);
ICallable factorial = new Function(new string[] { "n" }, ifcmd, context);
return factorial;
}
public void DefineMethod()
{
DynamicObject dynobj = new DynamicObject();
ICommand body = new ReturnCommand(new VariableExpression("Name"));
Function function = new Function(null, body);
dynobj.SetValue("GetName", function);
object result = dynobj.GetValue("GetName");
Assert.IsNotNull(result);
Assert.IsInstanceOfType(result, typeof(ICallable));
Assert.IsTrue(result == function);
}
public void InvokeNativeMethod()
{
DynamicObject dynobj = new DynamicObject();
ICommand body = new ReturnCommand(new VariableExpression("Name"));
Function function = new Function(null, body);
dynobj.SetValue("Name", "Adam");
object result = dynobj.Invoke("GetValue", new object[] { "Name" });
Assert.IsNotNull(result);
Assert.IsInstanceOfType(result, typeof(string));
Assert.AreEqual("Adam", result);
}
public void InvokeMethod()
{
ICommand body = new ReturnCommand(new DotExpression(new VariableExpression("this"), "Name"));
Function function = new Function(null, body);
Assert.AreEqual(0, function.Arity);
dynobj.SetValue("Name", "Adam");
dynobj.SetValue("GetName", function);
object result = dynobj.Invoke("GetName", new object[] { });
Assert.IsNotNull(result);
Assert.IsInstanceOfType(result, typeof(string));
Assert.AreEqual("Adam", result);
}
public void FunctionHasCallMethod()
{
ICommand body = new ReturnCommand(new VariableExpression("x"));
Function function = new Function(new string[] { "x" }, body);
object result = function.GetValue("call");
Assert.IsNotNull(result);
Assert.IsInstanceOfType(result, typeof(ICallable));
}