public override CilValueReference Store(CilObject obj)
{
var address = _nextAddress;
_dictionary[address] = obj;
_nextAddress++;
return(new CilValueReference(address));
}
public override IValue Unbox(CilObject obj, CilManagedMemory managedMemory, CilProgram program)
{
if (obj is CilObjectExternal objExternal)
{
if (objExternal.ExternalObject.GetType().IsEnum)
{
var result = Convert.ToInt32(objExternal.ExternalObject);
return(new CilValueInt32(result));
}
}
throw new NotImplementedException();
}
public override void VisitBoxInstruction(BoxInstruction instruction)
{
var cilType = instruction.TypeSpec.GetCilType(_program);
ControlState.EvaluationStack.PopValue(_program, cilType, out var val);
CilObject obj = null;
if (cilType.IsValueType(_program) && !cilType.IsNullable)
{
obj = val.Box();
}
var objRef = ManagedMemory.Store(obj);
ControlState.EvaluationStack.PushValue(objRef);
ControlState.MoveToNextInstruction();
}
public override void VisitCallVirtualInstruction(CallVirtualInstruction instruction)
{
if (!instruction.CallConv.IsInstance)
{
throw new System.NotImplementedException();
}
var methodArgs = PopMethodArgs(instruction);
ControlState.EvaluationStack.PopValue(_program, instruction.TypeSpec.GetCilType(_program), out var thisVal);
var callExternal = true;
CilClassInstance thisClassInstance = null;
CilObject thisObject = null;
if (thisVal is CilValueReference thisValRef)
{
var thisObj = ManagedMemory.Load(thisValRef);
if (thisObj is CilClassInstance)
{
thisClassInstance = thisObj as CilClassInstance;
}
else
{
thisObject = thisObj;
callExternal = true;
}
}
else
{
throw new System.NotImplementedException();
}
CilMethod method = null;
if (thisClassInstance != null)
{
var currentClass = thisClassInstance.Class;
while (true)
{
var possibleMethod = currentClass.Methods.SingleOrDefault(m => m.Name == instruction.MethodName && AreArgumentsAssignable(instruction.SigArgs, m.Arguments));
if (possibleMethod != null)
{
method = possibleMethod;
callExternal = false;
break;
}
currentClass = currentClass.Extends;
if (currentClass == null)
{
callExternal = true;
break;
}
}
}
if (callExternal)
{
var result = CallExternalMethod(instruction, thisVal, methodArgs.ToArray(), null);
if (!(instruction.ReturnType is CilTypeVoid))
{
var resultVal = instruction.ReturnType.CreateValueFromRuntime(result, ManagedMemory, _program);
ControlState.EvaluationStack.PushValue(resultVal);
}
ControlState.MoveToNextInstruction();
}
else
{
var sigArgsWithThis = CompleteSigArgs(instruction, method);
var argsWithThis = CompleteArgs(instruction, methodArgs, thisVal);
var newMethodState = new CilMethodState(method, sigArgsWithThis, argsWithThis, _program);
ControlState.MoveToNextInstruction();
ControlState.CallStack.Push(newMethodState);
}
}
public override IValue Unbox(CilObject obj, CilManagedMemory managedMemory, CilProgram program)
{
throw new NotImplementedException();
}
public abstract CilValueReference Store(CilObject obj);
public abstract IValue Unbox(CilObject obj, CilManagedMemory managedMemory, CilProgram program);