private void EvalInstruction()
{
if (instruction.Location != null)
{
currentLocation = instruction.Location;
}
switch (instruction.OperationCode)
{
case Opcode.Pop:
{
Pop();
break;
}
case Opcode.Dup:
{
IodineObject val = Pop();
Push(val);
Push(val);
break;
}
case Opcode.LoadConst:
{
Push(Top.Module.ConstantPool [instruction.Argument]);
break;
}
case Opcode.LoadNull:
{
Push(IodineNull.Instance);
break;
}
case Opcode.LoadSelf:
{
Push(Top.Self);
break;
}
case Opcode.LoadTrue:
{
Push(IodineBool.True);
break;
}
case Opcode.LoadException:
{
Push(lastException);
break;
}
case Opcode.LoadFalse:
{
Push(IodineBool.False);
break;
}
case Opcode.StoreLocal:
{
string name = ((IodineName)Top.Module.ConstantPool [instruction.Argument]).Value;
Top.StoreLocal(name, Pop());
break;
}
case Opcode.LoadLocal:
{
string name = ((IodineName)Top.Module.ConstantPool [instruction.Argument]).Value;
Push(Top.LoadLocal(name));
break;
}
case Opcode.StoreGlobal:
{
string name = ((IodineName)Top.Module.ConstantPool [instruction.Argument]).Value;
Top.Module.SetAttribute(this, name, Pop());
break;
}
case Opcode.LoadGlobal:
{
string name = ((IodineName)Top.Module.ConstantPool [instruction.Argument]).Value;
if (name == "_")
{
Push(Top.Module);
}
else if (Top.Module.Attributes.ContainsKey(name))
{
Push(Top.Module.GetAttribute(this, name));
}
else
{
RaiseException(new IodineAttributeNotFoundException(name));
}
break;
}
case Opcode.StoreAttribute:
{
IodineObject target = Pop();
IodineObject value = Pop();
string attribute = ((IodineName)Top.Module.ConstantPool [instruction.Argument]).Value;
if (target.Attributes.ContainsKey(attribute) &&
target.Attributes [attribute] is IIodineProperty)
{
IIodineProperty property = (IIodineProperty)target.Attributes [attribute];
property.Set(this, value);
break;
}
target.SetAttribute(this, attribute, value);
break;
}
case Opcode.LoadAttribute:
{
IodineObject target = Pop();
string attribute = ((IodineName)Top.Module.ConstantPool [instruction.Argument]).Value;
if (target.Attributes.ContainsKey(attribute) &&
target.Attributes [attribute] is IIodineProperty)
{
IIodineProperty property = (IIodineProperty)target.Attributes [attribute];
Push(property.Get(this));
break;
}
Push(target.GetAttribute(this, attribute));
break;
}
case Opcode.LoadAttributeOrNull:
{
IodineObject target = Pop();
string attribute = ((IodineName)Top.Module.ConstantPool [instruction.Argument]).Value;
if (target.Attributes.ContainsKey(attribute))
{
Push(target.GetAttribute(this, attribute));
}
else
{
Push(IodineNull.Instance);
}
break;
}
case Opcode.StoreIndex:
{
IodineObject index = Pop();
IodineObject target = Pop();
IodineObject value = Pop();
target.SetIndex(this, index, value);
break;
}
case Opcode.LoadIndex:
{
IodineObject index = Pop();
IodineObject target = Pop();
Push(target.GetIndex(this, index));
break;
}
case Opcode.CastLocal:
{
IodineTypeDefinition type = Pop() as IodineTypeDefinition;
string name = ((IodineName)Top.Module.ConstantPool [instruction.Argument]).Value;
IodineObject o = Top.LoadLocal(name);
if (type == null)
{
RaiseException(new IodineTypeException("TypeDef"));
break;
}
if (o.InstanceOf(type))
{
Push(o);
}
else
{
RaiseException(new IodineTypeException(type.Name));
}
break;
}
case Opcode.BinOp:
{
IodineObject op2 = Pop();
IodineObject op1 = Pop();
Push(op1.PerformBinaryOperation(this,
(BinaryOperation)instruction.Argument,
op2
));
break;
}
case Opcode.UnaryOp:
{
Push(Pop().PerformUnaryOperation(this,
(UnaryOperation)instruction.Argument));
break;
}
case Opcode.Invoke:
{
IodineObject target = Pop();
IodineObject[] arguments = new IodineObject[instruction.Argument];
for (int i = 1; i <= instruction.Argument; i++)
{
arguments [instruction.Argument - i] = Pop();
}
Push(target.Invoke(this, arguments));
break;
}
case Opcode.InvokeVar:
{
IodineObject target = Pop();
List <IodineObject> arguments = new List <IodineObject> ();
IodineTuple tuple = Pop() as IodineTuple;
if (tuple == null)
{
RaiseException(new IodineTypeException("Tuple"));
break;
}
for (int i = 0; i < instruction.Argument; i++)
{
arguments.Add(Pop());
}
arguments.AddRange(tuple.Objects);
Push(target.Invoke(this, arguments.ToArray()));
break;
}
case Opcode.InvokeSuper:
{
IodineTypeDefinition target = Pop() as IodineTypeDefinition;
IodineObject[] arguments = new IodineObject[instruction.Argument];
for (int i = 1; i <= instruction.Argument; i++)
{
arguments [instruction.Argument - i] = Pop();
}
target.Inherit(this, Top.Self, arguments);
break;
}
case Opcode.Return:
{
Top.InstructionPointer = int.MaxValue;
break;
}
case Opcode.Yield:
{
Top.Yielded = true;
break;
}
case Opcode.JumpIfTrue:
{
if (Pop().IsTrue())
{
Top.InstructionPointer = instruction.Argument;
}
break;
}
case Opcode.JumpIfFalse:
{
if (!Pop().IsTrue())
{
Top.InstructionPointer = instruction.Argument;
}
break;
}
case Opcode.Jump:
{
Top.InstructionPointer = instruction.Argument;
break;
}
case Opcode.BuildClass:
{
IodineName name = Pop() as IodineName;
IodineString doc = Pop() as IodineString;
IodineMethod constructor = Pop() as IodineMethod;
//CodeObject initializer = Pop as CodeObject;
IodineTypeDefinition baseClass = Pop() as IodineTypeDefinition;
IodineTuple interfaces = Pop() as IodineTuple;
IodineClass clazz = new IodineClass(name.ToString(), new CodeObject(), constructor);
if (baseClass != null)
{
clazz.BaseClass = baseClass;
baseClass.BindAttributes(clazz);
}
for (int i = 0; i < instruction.Argument; i++)
{
IodineObject val = Pop();
IodineObject key = Pop();
clazz.Attributes [val.ToString()] = key;
}
foreach (IodineObject obj in interfaces.Objects)
{
IodineContract contract = obj as IodineContract;
if (!contract.InstanceOf(clazz))
{
//RaiseException (new IodineTypeException (contract.Name));
break;
}
}
clazz.SetAttribute("__doc__", doc);
Push(clazz);
break;
}
case Opcode.BuildMixin:
{
IodineName name = Pop() as IodineName;
IodineMixin mixin = new IodineMixin(name.ToString());
for (int i = 0; i < instruction.Argument; i++)
{
IodineObject val = Pop();
IodineObject key = Pop();
mixin.Attributes [val.ToString()] = key;
}
Push(mixin);
break;
}
case Opcode.BuildEnum:
{
IodineName name = Pop() as IodineName;
IodineEnum ienum = new IodineEnum(name.ToString());
for (int i = 0; i < instruction.Argument; i++)
{
IodineInteger val = Pop() as IodineInteger;
IodineName key = Pop() as IodineName;
ienum.AddItem(key.ToString(), (int)val.Value);
}
Push(ienum);
break;
}
case Opcode.BuildContract:
{
IodineName name = Pop() as IodineName;
IodineContract contract = new IodineContract(name.ToString());
for (int i = 0; i < instruction.Argument; i++)
{
IodineMethod val = Pop() as IodineMethod;
contract.AddMethod(val);
}
Push(contract);
break;
}
case Opcode.BuildTrait:
{
IodineName name = Pop() as IodineName;
IodineTrait trait = new IodineTrait(name.ToString());
for (int i = 0; i < instruction.Argument; i++)
{
IodineMethod val = Pop() as IodineMethod;
trait.AddMethod(val);
}
Push(trait);
break;
}
case Opcode.BuildHash:
{
IodineDictionary hash = new IodineDictionary();
for (int i = 0; i < instruction.Argument; i++)
{
IodineObject val = Pop();
IodineObject key = Pop();
hash.Set(key, val);
}
Push(hash);
break;
}
case Opcode.BuildList:
{
IodineObject[] items = new IodineObject[instruction.Argument];
for (int i = 1; i <= instruction.Argument; i++)
{
items [instruction.Argument - i] = Pop();
}
Push(new IodineList(items));
break;
}
case Opcode.BuildTuple:
{
IodineObject[] items = new IodineObject[instruction.Argument];
for (int i = 1; i <= instruction.Argument; i++)
{
items [instruction.Argument - i] = Pop();
}
Push(new IodineTuple(items));
break;
}
case Opcode.BuildClosure:
{
IodineObject obj = Pop();
IodineMethod method = obj as IodineMethod;
Push(new IodineClosure(Top, method));
break;
}
case Opcode.BuildGenExpr:
{
CodeObject method = Pop() as CodeObject;
Push(new IodineGeneratorExpr(Top, method));
break;
}
case Opcode.Slice:
{
IodineObject target = Pop();
IodineInteger[] arguments = new IodineInteger[3];
for (int i = 0; i < 3; i++)
{
IodineObject obj = Pop();
arguments [i] = obj as IodineInteger;
if (obj != IodineNull.Instance && arguments [i] == null)
{
RaiseException(new IodineTypeException("Int"));
break;
}
}
IodineSlice slice = new IodineSlice(arguments [0], arguments [1], arguments [2]);
Push(target.Slice(this, slice));
break;
}
case Opcode.MatchPattern:
{
IodineObject collection = Pop().GetIterator(this);
IodineObject[] items = new IodineObject[instruction.Argument];
for (int i = 1; i <= instruction.Argument; i++)
{
items [instruction.Argument - i] = Pop();
}
int index = 0;
collection.IterReset(this);
while (collection.IterMoveNext(this) && index < items.Length)
{
IodineObject o = collection.IterGetCurrent(this);
if (items [index] is IodineTypeDefinition)
{
if (!o.InstanceOf(items [index] as IodineTypeDefinition))
{
Push(IodineBool.False);
break;
}
}
else
{
if (!o.Equals(items [index]))
{
Push(IodineBool.False);
break;
}
}
index++;
}
Push(IodineBool.Create(index == items.Length));
break;
}
case Opcode.Unwrap:
{
IodineObject container = Pop();
IodineObject value = container.Unwrap(this);
if (instruction.Argument > 0)
{
IodineInteger len = value.Len(this) as IodineInteger;
if (len == null || len.Value != instruction.Argument)
{
Push(IodineBool.False);
break;
}
}
Push(value);
Push(IodineBool.True);
break;
}
case Opcode.Unpack:
{
IodineTuple tuple = Pop() as IodineTuple;
if (tuple == null)
{
RaiseException(new IodineTypeException("Tuple"));
break;
}
if (tuple.Objects.Length != instruction.Argument)
{
RaiseException(new IodineUnpackException(instruction.Argument));
break;
}
for (int i = tuple.Objects.Length - 1; i >= 0; i--)
{
Push(tuple.Objects [i]);
}
break;
}
case Opcode.GetIter:
{
Push(Pop().GetIterator(this));
break;
}
case Opcode.IterGetNext:
{
Push(Pop().IterGetCurrent(this));
break;
}
case Opcode.IterMoveNext:
{
Push(IodineBool.Create(Pop().IterMoveNext(this)));
break;
}
case Opcode.IterReset:
{
Pop().IterReset(this);
break;
}
case Opcode.PushExceptionHandler:
{
Top.ExceptionHandlers.Push(new IodineExceptionHandler(frameCount, instruction.Argument));
break;
}
case Opcode.PopExceptionHandler:
{
Top.ExceptionHandlers.Pop();
break;
}
case Opcode.InstanceOf:
{
IodineObject o = Pop();
IodineTypeDefinition type = Pop() as IodineTypeDefinition;
if (type == null)
{
RaiseException(new IodineTypeException("TypeDef"));
break;
}
Push(IodineBool.Create(o.InstanceOf(type)));
break;
}
case Opcode.DynamicCast:
{
IodineObject o = Pop();
IodineTypeDefinition type = Pop() as IodineTypeDefinition;
if (type == null)
{
RaiseException(new IodineTypeException("TypeDef"));
break;
}
if (o.InstanceOf(type))
{
Push(o);
}
else
{
Push(IodineNull.Instance);
}
break;
}
case Opcode.NullCoalesce:
{
IodineObject o1 = Pop();
IodineObject o2 = Pop();
if (o1 is IodineNull)
{
Push(o2);
}
else
{
Push(o1);
}
break;
}
case Opcode.BeginExcept:
{
bool rethrow = true;
for (int i = 1; i <= instruction.Argument; i++)
{
IodineTypeDefinition type = Pop() as IodineTypeDefinition;
if (type == null)
{
RaiseException(new IodineTypeException("TypeDef"));
break;
}
if (lastException.InstanceOf(type))
{
rethrow = false;
break;
}
}
if (rethrow)
{
RaiseException(lastException);
}
break;
}
case Opcode.Raise:
{
IodineObject e = Pop();
if (e.InstanceOf(IodineException.TypeDefinition))
{
RaiseException(e);
}
else
{
RaiseException(new IodineTypeException("Exception"));
}
break;
}
case Opcode.SwitchLookup:
{
Dictionary <int, IodineObject> lookup = new Dictionary <int, IodineObject> ();
int needle = Pop().GetHashCode();
for (int i = 0; i < instruction.Argument; i++)
{
IodineObject value = Pop();
IodineObject key = Pop();
lookup [key.GetHashCode()] = value;
}
if (lookup.ContainsKey(needle))
{
lookup [needle].Invoke(this, new IodineObject[] { });
Push(IodineBool.True);
}
else
{
Push(IodineBool.False);
}
break;
}
case Opcode.BeginWith:
{
IodineObject obj = Pop();
obj.Enter(this);
Top.DisposableObjects.Push(obj);
break;
}
case Opcode.EndWith:
{
Top.DisposableObjects.Pop().Exit(this);
break;
}
case Opcode.IncludeMixin:
{
IodineObject obj = Pop();
IodineObject type = Pop();
foreach (KeyValuePair <string, IodineObject> attr in obj.Attributes)
{
type.SetAttribute(attr.Key, attr.Value);
}
break;
}
case Opcode.ApplyMixin:
{
IodineObject type = Pop();
IodineMixin mixin = Top.Module.ConstantPool [instruction.Argument] as IodineMixin;
foreach (KeyValuePair <string, IodineObject> attr in mixin.Attributes)
{
type.SetAttribute(attr.Key, attr.Value);
}
break;
}
case Opcode.BuildFunction:
{
MethodFlags flags = (MethodFlags)instruction.Argument;
IodineString name = Pop() as IodineString;
IodineString doc = Pop() as IodineString;
CodeObject bytecode = Pop() as CodeObject;
IodineTuple parameters = Pop() as IodineTuple;
IodineObject[] defaultValues = new IodineObject[] { };
int defaultValuesStart = 0;
if (flags.HasFlag(MethodFlags.HasDefaultParameters))
{
IodineTuple defaultValuesTuple = Pop() as IodineTuple;
IodineInteger startInt = Pop() as IodineInteger;
defaultValues = defaultValuesTuple.Objects;
defaultValuesStart = (int)startInt.Value;
}
IodineMethod method = new IodineMethod(
Top.Module,
name,
bytecode,
parameters,
flags,
defaultValues,
defaultValuesStart
);
method.SetAttribute("__doc__", doc);
Push(method);
break;
}
}
}