/// <summary>
/// Invokes our function by using the Variables we have passed in
/// </summary>
public override void PerformOperation()
{
base.PerformOperation();
// Maybe we can improve this - store the array rather than create it every time we invoke the function
object[] parameters = new object[OrderedParameterList.Count];
ParameterInfo[] methodParameters = Method.GetParameters();
int index = 0;
foreach (Variable var in OrderedParameterList)
{
object parameter = (var.Value as Reference).Value;
if (parameter.GetType() != methodParameters[index].ParameterType)
{
parameter = CelesteBinder.Bind(parameter, methodParameters[index].ParameterType);
}
parameters[index] = parameter;//new CelesteObject(var.Value as Reference);
index++;
}
object returnedArgument = Method.Invoke(null, parameters);
if (Method.ReturnType.Name != "Void")
{
// If the method does not return void, push it onto the stack
CelesteStack.Push(returnedArgument);
}
}
// Because our Compiler is static, we have no constructor.
// Therefore, to use reflection to pick up the compilable objects we need to call this function whenever we try to compile a script.
// Foreach empty dictionary above, we will loop through our Assembly and attempt to populate the dictionary with
// the appropriate objects for it. This is done using Attributes and the class hierarchy
public static void Init()
{
// We have already set everything up so just return
if (InitComplete)
{
return;
}
Cel.LogOutputFilePath = Cel.ScriptDirectoryPath + "\\Log.txt";
foreach (Type type in Assembly.GetExecutingAssembly().GetTypes())
{
if (type.IsSubclassOf(typeof(Value)) && type.GetCustomAttribute <CompilableValue>() != null)
{
MethodInfo isTypeMethod = type.GetMethod("Is" + type.Name);
Debug.Assert(isTypeMethod != null);
RegisteredValues.Add(isTypeMethod, type);
}
// Don't add abstract classes - we shouldn't be able to create those anyway!
else if (type.IsSubclassOf(typeof(Operator)) && !type.IsAbstract)
{
MethodInfo isTypeMethod = type.GetMethod("Is" + type.Name);
Debug.Assert(isTypeMethod != null, "Is" + type.Name + " static method not implemented");
RegisteredOperators.Add(isTypeMethod, type);
}
else if (type.IsSubclassOf(typeof(FlowControl)) && !type.IsAbstract)
{
MethodInfo isTypeMethod = type.GetMethod("Is" + type.Name);
Debug.Assert(isTypeMethod != null);
RegisteredFlowControls.Add(isTypeMethod, type);
}
else if (type.IsSubclassOf(typeof(Keyword)))
{
FieldInfo scriptTokenField = type.GetField("scriptToken", BindingFlags.Static | BindingFlags.NonPublic);
Debug.Assert(scriptTokenField != null);
// Need to make the script token public rather than internal... will this work?
string scriptToken = (string)scriptTokenField.GetValue(type);
Debug.Assert(!string.IsNullOrEmpty(scriptToken));
RegisteredKeywords.Add(scriptToken, type);
}
else if (type.GetCustomAttribute <HasScriptCommands>() != null)
{
foreach (MethodInfo method in type.GetMethods())
{
// Create the Delegate object from the attribute information and store it as a LocalVariable
// For now we will do this in the GlobalScope, but this will change
// Then it will be picked up and run like any other function
if (method.GetCustomAttribute <ScriptCommand>() != null)
{
ScriptCommand scriptCommandAttr = method.GetCustomAttribute <ScriptCommand>();
Debug.Assert(scriptCommandAttr != null);
Delegate celDelegate = new Delegate(scriptCommandAttr.Token, method);
CelesteStack.GlobalScope.AddLocalVariable(celDelegate);
}
}
}
}
CelesteBinder.Init();
InitComplete = true;
}