public CPU(SharedObjects shared)
{
this.shared = shared;
this.shared.Cpu = this;
stack = new Stack();
globalVariables = new VariableScope(0, -1);
contexts = new List<ProgramContext>();
if (this.shared.UpdateHandler != null) this.shared.UpdateHandler.AddFixedObserver(this);
}
public CPU(SafeSharedObjects shared)
{
this.shared = shared;
this.shared.Cpu = this;
stack = new Stack();
globalVariables = new VariableScope(0, -1);
contexts = new List<ProgramContext>();
mainYields = new List<YieldFinishedDetector>();
triggerYields = new List<YieldFinishedDetector>();
if (this.shared.UpdateHandler != null) this.shared.UpdateHandler.AddFixedObserver(this);
}
private void SaveAndClearPointers()
{
// Any global variable that ends in an asterisk (*) is a system pointer
// that shouldn't be inherited by other program contexts. These sorts of
// variables should only exist for the current program context.
// This method stashes all such variables in a storage area for the program
// context, then clears them. The stash can be used later by RestorePointers()
// to bring them back into existence when coming back to this program context again.
// Pointer variables include:
// IP jump location for subprograms.
// IP jump location for functions.
savedPointers = new VariableScope(0, -1);
var pointers = new List<string>(globalVariables.Variables.Keys.Where(v => v.Contains('*')));
foreach (string pointerName in pointers)
{
savedPointers.Variables.Add(pointerName, globalVariables.Variables[pointerName]);
globalVariables.Variables.Remove(pointerName);
}
SafeHouse.Logger.Log(string.Format("Saving and removing {0} pointers", pointers.Count));
}
private void SaveAndClearPointers()
{
// To be honest, I'm a little afraid of this. It appears to be doing
// something with locks (and now user functions) whenever you
// switch contexts from interpreter to program and it seems to be
// presuming the only such pointers that need to exist are going to be
// global. This was written by marianoapp before I added locals,
// and I don't understand what it's for -- Dunbaratu
savedPointers = new VariableScope(0, -1);
var pointers = new List<string>(globalVariables.Variables.Keys.Where(v => v.Contains('*')));
foreach (var pointerName in pointers)
{
savedPointers.Variables.Add(pointerName, globalVariables.Variables[pointerName]);
globalVariables.Variables.Remove(pointerName);
}
SafeHouse.Logger.Log(string.Format("Saving and removing {0} pointers", pointers.Count));
}
