internal object Transform(EngineIntrinsics engineIntrinsics, object inputData, bool bindingParameters, bool bindingScriptCmdlet)
{
if (_convertTypes == null)
{
return(inputData);
}
object result = inputData;
try
{
for (int i = 0; i < _convertTypes.Length; i++)
{
if (bindingParameters)
{
// We should not be doing a conversion here if [ref] is the last type.
// When [ref] appears in an argument list, it is used for checking only.
// No Conversion should be done.
if (_convertTypes[i].Equals(typeof(System.Management.Automation.PSReference)))
{
object temp;
PSObject mshObject = result as PSObject;
if (mshObject != null)
{
temp = mshObject.BaseObject;
}
else
{
temp = result;
}
PSReference reference = temp as PSReference;
if (reference == null)
{
throw new PSInvalidCastException("InvalidCastExceptionReferenceTypeExpected", null,
ExtendedTypeSystem.ReferenceTypeExpected);
}
}
else
{
object temp;
PSObject mshObject = result as PSObject;
if (mshObject != null)
{
temp = mshObject.BaseObject;
}
else
{
temp = result;
}
// If a non-ref type is expected but currently passed in is a ref, do an implicit dereference.
PSReference reference = temp as PSReference;
if (reference != null)
{
result = reference.Value;
}
if (bindingScriptCmdlet && _convertTypes[i] == typeof(string))
{
// Don't allow conversion from array to string in script w/ cmdlet binding. Allow
// the conversion for ordinary script parameter binding for V1 compatibility.
temp = PSObject.Base(result);
if (temp != null && temp.GetType().IsArray)
{
throw new PSInvalidCastException("InvalidCastFromAnyTypeToString", null,
ExtendedTypeSystem.InvalidCastCannotRetrieveString);
}
}
}
}
// BUGBUG
// NTRAID#Windows Out of Band Releases - 930116 - 03/14/06
// handling special case for boolean, switchparameter and Nullable<bool>
// These parameter types will not be converted if the incoming value types are not
// one of the accepted categories - $true/$false or numbers (0 or otherwise)
if (LanguagePrimitives.IsBoolOrSwitchParameterType(_convertTypes[i]))
{
CheckBoolValue(result, _convertTypes[i]);
}
if (bindingScriptCmdlet)
{
// Check for conversion to something like bool[] or ICollection<bool>, but only for cmdlet binding
// to stay compatible with V1.
ParameterCollectionTypeInformation collectionTypeInfo = new ParameterCollectionTypeInformation(_convertTypes[i]);
if (collectionTypeInfo.ParameterCollectionType != ParameterCollectionType.NotCollection &&
LanguagePrimitives.IsBoolOrSwitchParameterType(collectionTypeInfo.ElementType))
{
IList currentValueAsIList = ParameterBinderBase.GetIList(result);
if (currentValueAsIList != null)
{
foreach (object val in currentValueAsIList)
{
CheckBoolValue(val, collectionTypeInfo.ElementType);
}
}
else
{
CheckBoolValue(result, collectionTypeInfo.ElementType);
}
}
}
result = LanguagePrimitives.ConvertTo(result, _convertTypes[i], CultureInfo.InvariantCulture);
// Do validation of invalid direct variable assignments which are allowed to
// be used for parameters.
//
// Note - this is duplicated in ExecutionContext.cs as parameter binding for script cmdlets can avoid this code path.
if ((!bindingScriptCmdlet) && (!bindingParameters))
{
// ActionPreference of Suspend is not supported as a preference variable. We can only block "Suspend"
// during variable assignment (here) - "Ignore" is blocked during variable retrieval.
if (_convertTypes[i] == typeof(ActionPreference))
{
ActionPreference resultPreference = (ActionPreference)result;
if (resultPreference == ActionPreference.Suspend)
{
throw new PSInvalidCastException("InvalidActionPreference", null, ErrorPackage.UnsupportedPreferenceVariable, resultPreference);
}
}
}
}
}
catch (PSInvalidCastException e)
{
throw new ArgumentTransformationMetadataException(e.Message, e);
}
// Track the flow of untrusted object during the conversion when it's called directly from ParameterBinderBase.
// When it's called from the override Transform method, the tracking is taken care of in the base type.
if (bindingParameters || bindingScriptCmdlet)
{
ExecutionContext.PropagateInputSource(inputData, result, engineIntrinsics.SessionState.Internal.LanguageMode);
}
return(result);
}