private PacketValue[] GetOutgoingStructure(ASCode code, Local getLocal)
{
List <PacketValue> structure = new List <PacketValue>();
for (int i = 0; i < code.Count; i++)
{
ASInstruction instruction = code[i];
if (instruction == getLocal)
{
break;
}
if (!Local.IsGetLocal(instruction.OP))
{
continue;
}
Local local = (Local)instruction;
if (local.Register != getLocal.Register)
{
continue;
}
for (i += 1; i < code.Count; i++)
{
ASInstruction next = code[i];
if (next.OP != OPCode.CallPropVoid)
{
continue;
}
CallPropVoidIns callPropVoid = (CallPropVoidIns)next;
if (callPropVoid.PropertyName.Name != "push")
{
continue;
}
ASInstruction previous = code[i - 1];
if (previous.OP == OPCode.GetProperty)
{
ASClass classToCheck = Class;
GetPropertyIns getProperty = (GetPropertyIns)previous;
ASMultiname propertyName = getProperty.PropertyName;
ASInstruction beforeGetProp = code[i - 2];
if (beforeGetProp.OP == OPCode.GetLex)
{
GetLexIns getLex = (GetLexIns)beforeGetProp;
classToCheck = classToCheck.GetABC().GetClass(getLex.TypeName);
}
if (!TryGetPacketValue(propertyName, classToCheck, out PacketValue piece))
{
return(null);
}
structure.Add(piece);
}
}
}
return(structure.Count == 0 ? null : structure.ToArray());
}
private PacketValue[] GetIncomingStructure(ASInstance instance, ASMethod method)
{
if (method.Body.Exceptions.Count > 0)
{
return(null);
}
ASCode code = method.Body.ParseCode();
if (code.JumpExits.Count > 0 || code.SwitchExits.Count > 0)
{
return(null);
}
List <PacketValue> structure = new List <PacketValue>();
ABCFile abc = method.GetABC();
for (int i = 0; i < code.Count; i++)
{
ASInstruction instruction = code[i];
if (instruction.OP != OPCode.GetLocal_1)
{
continue;
}
ASInstruction next = code[++i];
switch (next.OP)
{
case OPCode.CallProperty:
{
CallPropertyIns callProperty = (CallPropertyIns)next;
if (callProperty.ArgCount > 0)
{
ASMultiname propertyName = null;
ASInstruction previous = code[i - 2];
switch (previous.OP)
{
case OPCode.GetLex:
{
GetLexIns getLex = (GetLexIns)previous;
propertyName = getLex.TypeName;
break;
}
case OPCode.ConstructProp:
{
ConstructPropIns constructProp = (ConstructPropIns)previous;
propertyName = constructProp.PropertyName;
break;
}
case OPCode.GetLocal_0:
{
propertyName = instance.QName;
break;
}
}
ASInstance innerInstance = abc.GetInstance(propertyName);
ASMethod innerMethod = innerInstance.GetMethod(callProperty.PropertyName.Name, null, callProperty.ArgCount);
if (innerMethod == null)
{
ASClass innerClass = abc.GetClass(propertyName);
innerMethod = innerClass.GetMethod(callProperty.PropertyName.Name, null, callProperty.ArgCount);
}
PacketValue[] innerStructure = GetIncomingStructure(innerInstance, innerMethod);
if (innerStructure == null)
{
return(null);
}
structure.AddRange(innerStructure);
}
else
{
if (!TryGetPacketValue(callProperty.PropertyName, null, out PacketValue piece))
{
return(null);
}
structure.Add(piece);
}
break;
}
case OPCode.ConstructProp:
{
ConstructPropIns constructProp = (ConstructPropIns)next;
ASInstance innerInstance = abc.GetInstance(constructProp.PropertyName);
PacketValue[] innerStructure = GetIncomingStructure(innerInstance, innerInstance.Constructor);
if (innerStructure == null)
{
return(null);
}
structure.AddRange(innerStructure);
break;
}
case OPCode.ConstructSuper:
{
ASInstance superInstance = abc.GetInstance(instance.Super);
PacketValue[] innerStructure = GetIncomingStructure(superInstance, superInstance.Constructor);
if (innerStructure == null)
{
return(null);
}
structure.AddRange(innerStructure);
break;
}
case OPCode.CallSuper:
{
CallSuperIns callSuper = (CallSuperIns)next;
ASInstance superInstance = abc.GetInstance(instance.Super);
ASMethod superMethod = superInstance.GetMethod(callSuper.MethodName.Name, null, callSuper.ArgCount);
PacketValue[] innerStructure = GetIncomingStructure(superInstance, superMethod);
if (innerStructure == null)
{
return(null);
}
structure.AddRange(innerStructure);
break;
}
case OPCode.CallPropVoid:
{
CallPropVoidIns callPropVoid = (CallPropVoidIns)next;
if (callPropVoid.ArgCount != 0)
{
return(null);
}
if (!TryGetPacketValue(callPropVoid.PropertyName, null, out PacketValue piece))
{
return(null);
}
structure.Add(piece);
break;
}
default: return(null);
}
}
return(structure.Count == 0 ? null : structure.ToArray());
}