XElement IActionVisitor <XElement, XElement> .Visit(ActionTry action, XElement param)
{
var res = new XElement(XActionNames.FromAction(action));
if (action.Reserved != 0)
{
res.Add(new XAttribute("reserved", action.Reserved));
}
if (action.CatchInRegister)
{
res.Add(new XAttribute("catchReg", action.CatchRegister));
}
else
{
res.Add(new XAttribute("catchName", action.CatchName));
}
res.Add(XAction.ToXml(action.Try, new XElement("try")));
if (action.CatchBlock)
{
res.Add(XAction.ToXml(action.Catch, new XElement("catch")));
}
if (action.FinallyBlock)
{
res.Add(XAction.ToXml(action.Finally, new XElement("finally")));
}
return(res);
}
ActionBase IActionVisitor <XElement, ActionBase> .Visit(ActionTry action, XElement xAction)
{
var xReserved = xAction.Attribute("reserved");
var xCatchReg = xAction.Attribute("catchReg");
var xCatchName = xAction.Attribute("catchName");
var xTry = xAction.Element("try");
var xCatch = xAction.Element("catch");
var xFinally = xAction.Element("finally");
if (xReserved != null)
{
action.Reserved = byte.Parse(xReserved.Value);
}
if (xCatchReg != null && xCatchName == null)
{
action.CatchInRegister = true;
action.CatchRegister = byte.Parse(xCatchReg.Value);
}
else if (xCatchReg == null && xCatchName != null)
{
action.CatchInRegister = false;
action.CatchName = xCatchName.Value;
}
else if (xCatchReg != null && xCatchName != null)
{
throw new InvalidOperationException("catchReg and catchName are mutally exclusive");
}
else
{
throw new InvalidOperationException("Either catchReg or catchName must be specified");
}
XAction.FromXml(xTry, action.Try);
if (xCatch != null)
{
action.CatchBlock = true;
XAction.FromXml(xCatch, action.Catch);
}
if (xFinally != null)
{
action.FinallyBlock = true;
XAction.FromXml(xFinally, action.Finally);
}
return(action);
}
/// <summary>
/// Read try/catch block from swf and create corresponding
/// <see cref="SwfOp.ByteCode.Actions.ActionTry">ActionTry</see>,
/// <see cref="SwfOp.ByteCode.Actions.ActionCatch">ActionCatch</see>,
/// <see cref="SwfOp.ByteCode.Actions.ActionFinally">ActionFinally</see>,
/// <see cref="SwfOp.ByteCode.Actions.ActionEndTryBlock">ActionEndTryBlock</see>
/// actions.
/// </summary>
private ActionTry ReadActionTry(BinaryReader br)
{
br.ReadUInt16();
long startStream = br.BaseStream.Position;
byte flags = br.ReadByte();
bool catchInRegister = ((flags & 0x04) == 0x04);
bool finallyFlag = ((flags & 0x02) == 0x02);
bool catchFlag = ((flags & 0x01) == 0x01);
ushort trySize = br.ReadUInt16();
ushort catchSize = br.ReadUInt16();
ushort finallySize = br.ReadUInt16();
string catchName = "";
byte catchRegister = 0;
if (catchInRegister)
{
catchRegister = br.ReadByte();
}
else
{
catchName = BinaryStringRW.ReadString(br);
}
int len = Convert.ToInt32(br.BaseStream.Position - startStream);
ActionTry a = new ActionTry(catchInRegister, finallyFlag, catchFlag,
trySize, catchSize, finallySize,
catchName, catchRegister);
//a.ByteSize = len+3;
return(a);
}
/// <summary>
/// create other pseudo actions
/// </summary>
private void CreatePseudoActions(ArrayList actionRecord)
{
for (int i = 0; i < actionRecord.Count; i++)
{
BaseAction a = (BaseAction)actionRecord[i];
// -----------------------
// try/catch/finally block
// -----------------------
ActionTry aTry = a as ActionTry;
if (aTry != null)
{
int j = i + 1;
int offset = aTry.SizeTry;
// skip try block
while (offset > 0)
{
BaseAction currentAction = (BaseAction)actionRecord[j];
offset -= currentAction.ByteCount;
j++;
}
// skip catch
if (aTry.SizeCatch > 0)
{
actionRecord.Insert(j, new ActionCatch());
j++;
offset = aTry.SizeCatch;
while (offset > 0)
{
BaseAction currentAction = (BaseAction)actionRecord[j];
offset -= currentAction.ByteCount;
j++;
}
}
// skip finally
if (aTry.SizeFinally > 0)
{
actionRecord.Insert(j, new ActionFinally());
j++;
offset = aTry.SizeFinally;
while (offset > 0)
{
BaseAction currentAction = (BaseAction)actionRecord[j];
offset -= currentAction.ByteCount;
j++;
}
}
// end
actionRecord.Insert(j, new ActionEndTryBlock());
}
// -----------------------
// with
// -----------------------
ActionWith aWith = a as ActionWith;
if (aWith != null)
{
int j = i + 1;
int offset = aWith.BlockLength;
while (offset > 0)
{
BaseAction currentAction = (BaseAction)actionRecord[j];
offset -= currentAction.ByteCount;
j++;
}
actionRecord.Insert(j, new ActionEndWith());
}
// -----------------------
// wait for frame
// -----------------------
ActionWaitForFrame aWait = a as ActionWaitForFrame;
if (aWait != null)
{
int j = i + 1;
int count = aWait.SkipCount;
while (count > 0)
{
if (((int)((BaseAction)actionRecord[j]).Code >= 0x00) ||
(((BaseAction)actionRecord[j]).Code == (int)ActionCode.PushList))
{
count--;
}
j++;
}
actionRecord.Insert(j, new ActionEndWait());
}
ActionWaitForFrame2 aWait2 = a as ActionWaitForFrame2;
if (aWait2 != null)
{
int j = i + 1;
int count = aWait2.SkipCount;
while (count > 0)
{
if (((int)((BaseAction)actionRecord[j]).Code >= 0x00) ||
(((BaseAction)actionRecord[j]).Code == (int)ActionCode.PushList))
{
count--;
}
j++;
}
actionRecord.Insert(j, new ActionEndWait());
}
}
}
