/// <summary>
///
/// </summary>
/// <param name="code"></param>
/// <param name="instructionIndex"></param>
/// <param name="mStack"></param>
/// <returns></returns>
public override bool Execute( AVM1Code code, int instructionIndex, CheckMachine.MachineStack mStack )
{
AVM1DataElement e = new AVM1DataElement();
// check if we can resolve the argument within the basic block of the instruction
if ( AVM1.Stack.Trace.TraceArgument( code, instructionIndex, null, _ArgumentNumber, out e ) )
{
if ( e.DataType != AVM1DataTypes.AVM_String )
{
return false;
}
else
{
CheckMachine.MachineStackEntry se = new CheckMachine.MachineStackEntry();
se.Type = CheckMachine.MachineStackType.String;
se.Value = e.Value;
mStack.Push( se );
return true;
}
}
return false;
}
/// <summary>
/// Parses the arguments from a source stream (The documentation is misleading.
/// The _length member does define the overall length of the action's arguments.
/// Now, we have to track how much we used.)
/// </summary>
/// <param name="sourceStream">The source stream</param>
/// <param name="sourceVersion">The version</param>
protected override void Parse( System.IO.BinaryReader sourceStream, byte sourceVersion )
{
_arguments = new List<AVM1DataElement>();
//
// The documentation is misleading. The _length member does define the overall
// length of the action's arguments. Now, we have to track how much we used.
//
long before = sourceStream.BaseStream.Position;
while ( sourceStream.BaseStream.Position < ( before + _length ) )
{
AVM1DataElement element = new AVM1DataElement();
element.DataType = ( AVM1DataTypes )sourceStream.ReadByte();
if ( ( element.DataType >= AVM1DataTypes.AVM_null ) && ( sourceVersion < 5 ) )
{
throw new AVM1ExceptionVersion( "ActionPush with data type " + element.DataType.ToString() + " in Swf Version " + sourceVersion.ToString() );
}
switch ( element.DataType )
{
case AVM1DataTypes.AVM_String:
element.Value = ( object )Helper.SwfStrings.SwfString( sourceVersion, sourceStream );
break;
case AVM1DataTypes.AVM_float:
element.Value = ( object )sourceStream.ReadSingle();
break;
case AVM1DataTypes.AVM_null:
element.Value = null;
break;
case AVM1DataTypes.AVM_undefined:
element.Value = null;
break;
case AVM1DataTypes.AVM_register:
element.Value = ( object )sourceStream.ReadByte();
break;
case AVM1DataTypes.AVM_boolean:
element.Value = ( object )sourceStream.ReadBoolean();
break;
case AVM1DataTypes.AVM_double:
element.Value = ( object )sourceStream.ReadDouble();
break;
case AVM1DataTypes.AVM_integer:
element.Value = ( object )sourceStream.ReadUInt32();
break;
case AVM1DataTypes.AVM_constUInt8:
element.Value = ( object )sourceStream.ReadByte();
break;
case AVM1DataTypes.AVM_constUInt16:
element.Value = ( object )sourceStream.ReadUInt16();
break;
default:
throw new AVM1ExceptionByteCodeFormat( "ActionPush with invalid data type 0x" + element.DataType.ToString( "X" ) );
}
_arguments.Add( element );
}
if ( sourceStream.BaseStream.Position != ( before + _length ) )
{
throw new AVM1ExceptionByteCodeFormat( "ActionPush arguments consumed more than the Action's length (" +
( ( long )( sourceStream.BaseStream.Position - before ) ).ToString() + " consumed, " +
_length.ToString() + " declared as length)" );
}
}
/// <summary>
/// Parses the action from a string array
/// </summary>
/// <param name="token">The action as string arry</param>
/// <returns>True - If parsing was successful. False - If it was not</returns>
protected override bool ParseFrom( params string[] token )
{
_arguments = new List<AVM1DataElement>();
for ( int i = 0; i < token.Length; i++ )
{
string arg = null;
if ( token[ i ].Contains( ":" ) )
{
arg = token[ i ].Substring( token[ i ].IndexOf( ":" ) + 1 );
}
AVM1DataElement e = new AVM1DataElement();
if ( token[ i ].StartsWith( "Bool:", StringComparison.InvariantCulture ) )
{
e.DataType = AVM1DataTypes.AVM_boolean;
e.Value = Boolean.Parse( arg );
}
else if ( token[ i ].StartsWith( "Const16:", StringComparison.InvariantCulture ) )
{
e.DataType = AVM1DataTypes.AVM_constUInt16;
e.Value = UInt16.Parse( arg, System.Globalization.NumberStyles.AllowHexSpecifier );
}
else if ( token[ i ].StartsWith( "Const8:", StringComparison.InvariantCulture ) )
{
e.DataType = AVM1DataTypes.AVM_constUInt8;
e.Value = Byte.Parse( arg, System.Globalization.NumberStyles.AllowHexSpecifier );
}
else if ( token[ i ].StartsWith( "Double:", StringComparison.InvariantCulture ) )
{
e.DataType = AVM1DataTypes.AVM_double;
e.Value = Double.Parse( arg );
}
else if ( token[ i ].StartsWith( "Single:", StringComparison.InvariantCulture ) )
{
e.DataType = AVM1DataTypes.AVM_float;
e.Value = float.Parse( arg );
}
else if ( token[ i ].StartsWith( "UInt32:", StringComparison.InvariantCulture ) )
{
e.DataType = AVM1DataTypes.AVM_integer;
e.Value = UInt32.Parse( arg, System.Globalization.NumberStyles.AllowHexSpecifier );
}
else if ( token[ i ].StartsWith( "NULL", StringComparison.InvariantCulture ) )
{
e.DataType = AVM1DataTypes.AVM_null;
e.Value = null;
}
else if ( token[ i ].StartsWith( "Reg:", StringComparison.InvariantCulture ) )
{
e.DataType = AVM1DataTypes.AVM_register;
e.Value = Byte.Parse( arg, System.Globalization.NumberStyles.AllowHexSpecifier );
}
else if ( token[ i ].StartsWith( "String:", StringComparison.InvariantCulture ) )
{
e.DataType = AVM1DataTypes.AVM_String;
e.Value = arg;
}
else if ( token[ i ].StartsWith( "UNDEFINED", StringComparison.InvariantCulture ) )
{
e.DataType = AVM1DataTypes.AVM_undefined;
e.Value = null;
}
else
{
return false;
}
_arguments.Add( e );
}
return true;
}
/// <summary>
///
/// </summary>
public virtual Stack.AVM1Stack PerformStackOperations( Stack.AVM1Stack sourceStack )
{
for ( int i = 0; i < _StackOps.Length; i++ )
{
if ( _StackOps[ i ].Change < 0 )
{
sourceStack.Pop();
}
else if ( _StackOps[ i ].Change > 0 )
{
AVM1DataElement e = new AVM1DataElement();
e.DataType = _StackOps[ i ].DataType;
e.Value = null;
sourceStack.Push( e );
}
}
return sourceStack;
}