public ASClass GetIncomingParser(ASInstance incomingInstance)
{
if (_incomingParsersCache.ContainsKey(incomingInstance))
return _incomingParsersCache[incomingInstance];
ASClass parserClass = null;
ABCFile abc = incomingInstance.ABC;
try
{
using (var codeOut = new FlashReader(
incomingInstance.Constructor.Body.Bytecode))
{
while (codeOut.IsDataAvailable)
{
OPCode op = codeOut.ReadOP();
object[] values = codeOut.ReadValues(op);
if (op != OPCode.GetLex) continue;
var getLexIndex = (int)values[0];
ASMultiname getLexName = abc.Constants.Multinames[getLexIndex];
parserClass = abc.FindClassByName(getLexName.ObjName);
if (parserClass != null) return parserClass;
break;
}
}
ASInstance incomingSuperInstance = abc.FindInstanceByName(
incomingInstance.SuperType.ObjName);
ASMultiname parserReturnType = incomingSuperInstance
.FindGetter("parser").Method.ReturnType;
SlotConstantTrait parserSlot = incomingSuperInstance
.FindSlot("*", parserReturnType.ObjName);
foreach (ASTrait trait in incomingInstance.Traits)
{
if (trait.TraitType != TraitType.Method) continue;
var mgsTrait = (MethodGetterSetterTrait)trait.Data;
if (mgsTrait.Method.Parameters.Count != 0) continue;
using (var codeOut = new FlashReader(
mgsTrait.Method.Body.Bytecode))
{
while (codeOut.IsDataAvailable)
{
OPCode op = codeOut.ReadOP();
object[] values = codeOut.ReadValues(op);
if (op != OPCode.GetLex) continue;
var getLexIndex = (int)values[0];
ASMultiname getLexType = abc.Constants.Multinames[getLexIndex];
if (getLexType.ObjName != parserSlot.ObjName) continue;
parserClass = abc.FindClassByName(mgsTrait.Method.ReturnType.ObjName);
if (parserClass != null) return parserClass;
break;
}
}
}
return parserClass;
}
finally
{
if (parserClass != null)
_incomingParsersCache[incomingInstance] = parserClass;
}
}
protected ASMethod FindVerifyMethod(ASInstance instance, ABCFile abc, out int rsaStart)
{
List<MethodGetterSetterTrait> methodTraits =
instance.FindTraits<MethodGetterSetterTrait>(TraitType.Method);
rsaStart = -1;
foreach (MethodGetterSetterTrait mgsTrait in methodTraits)
{
ASMethod method = mgsTrait.Method;
if (method.ReturnType.ObjName != "void") continue;
if (method.Parameters.Count != 1) continue;
using (var code = new FlashReader(method.Body.Bytecode))
{
while (code.Position != code.Length)
{
OPCode op = code.ReadOP();
if (op != OPCode.GetLex) continue;
int typeIndex = code.Read7BitEncodedInt();
ASMultiname type = abc.Constants.Multinames[typeIndex];
if (type?.ObjName == "RSAKey")
{
rsaStart = code.Position;
return method;
}
}
}
}
return null;
}
