internal static PSReference GetVariableAsRef(VariablePath variablePath, ExecutionContext executionContext, Type staticType)
{
Diagnostics.Assert(variablePath.IsVariable, "calller to verify varpath is a variable.");
SessionStateInternal sessionState = executionContext.EngineSessionState;
CommandOrigin origin = sessionState.CurrentScope.ScopeOrigin;
SessionStateScope scope;
PSVariable var = sessionState.GetVariableItem(variablePath, out scope, origin);
if (var == null)
{
throw InterpreterError.NewInterpreterException(variablePath, typeof(RuntimeException), null,
"NonExistingVariableReference",
ParserStrings.NonExistingVariableReference);
}
object value = var.Value;
if (staticType == null && value != null)
{
value = PSObject.Base(value);
if (value != null)
{
staticType = value.GetType();
}
}
if (staticType == null)
{
var declaredType = var.Attributes.OfType <ArgumentTypeConverterAttribute>().FirstOrDefault();
staticType = declaredType != null ? declaredType.TargetType : typeof(LanguagePrimitives.Null);
}
return(PSReference.CreateInstance(var, staticType));
}
private static PSReference GetVariableAsRef(VariablePath variablePath, ExecutionContext executionContext, Type staticType)
{
SessionStateScope scope;
SessionStateInternal engineSessionState = executionContext.EngineSessionState;
CommandOrigin scopeOrigin = engineSessionState.CurrentScope.ScopeOrigin;
PSVariable variable = engineSessionState.GetVariableItem(variablePath, out scope, scopeOrigin);
if (variable == null)
{
throw InterpreterError.NewInterpreterException(variablePath, typeof(RuntimeException), null, "NonExistingVariableReference", ParserStrings.NonExistingVariableReference, new object[0]);
}
object obj2 = variable.Value;
if ((staticType == null) && (obj2 != null))
{
obj2 = PSObject.Base(obj2);
if (obj2 != null)
{
staticType = obj2.GetType();
}
}
if (staticType == null)
{
ArgumentTypeConverterAttribute attribute = variable.Attributes.OfType <ArgumentTypeConverterAttribute>().FirstOrDefault <ArgumentTypeConverterAttribute>();
staticType = (attribute != null) ? attribute.TargetType : typeof(LanguagePrimitives.Null);
}
return(PSReference.CreateInstance(variable, staticType));
}
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);
}
return(result);
}
internal object Transform(EngineIntrinsics engineIntrinsics, object inputData, bool bindingParameters, bool bindingScriptCmdlet)
{
if (this._convertTypes == null)
{
return(inputData);
}
object obj2 = inputData;
try
{
for (int i = 0; i < this._convertTypes.Length; i++)
{
if (bindingParameters)
{
if (this._convertTypes[i].Equals(typeof(PSReference)))
{
object baseObject;
PSObject obj4 = obj2 as PSObject;
if (obj4 != null)
{
baseObject = obj4.BaseObject;
}
else
{
baseObject = obj2;
}
if (!(baseObject is PSReference))
{
throw new PSInvalidCastException("InvalidCastExceptionReferenceTypeExpected", null, ExtendedTypeSystem.ReferenceTypeExpected, new object[0]);
}
}
else
{
object obj5;
PSObject obj6 = obj2 as PSObject;
if (obj6 != null)
{
obj5 = obj6.BaseObject;
}
else
{
obj5 = obj2;
}
PSReference reference2 = obj5 as PSReference;
if (reference2 != null)
{
obj2 = reference2.Value;
}
if (bindingScriptCmdlet && (this._convertTypes[i] == typeof(string)))
{
obj5 = PSObject.Base(obj2);
if ((obj5 != null) && obj5.GetType().IsArray)
{
throw new PSInvalidCastException("InvalidCastFromAnyTypeToString", null, ExtendedTypeSystem.InvalidCastCannotRetrieveString, new object[0]);
}
}
}
}
if (LanguagePrimitives.IsBoolOrSwitchParameterType(this._convertTypes[i]))
{
CheckBoolValue(obj2, this._convertTypes[i]);
}
if (bindingScriptCmdlet)
{
ParameterCollectionTypeInformation information = new ParameterCollectionTypeInformation(this._convertTypes[i]);
if ((information.ParameterCollectionType != ParameterCollectionType.NotCollection) && LanguagePrimitives.IsBoolOrSwitchParameterType(information.ElementType))
{
IList iList = ParameterBinderBase.GetIList(obj2);
if (iList != null)
{
foreach (object obj7 in iList)
{
CheckBoolValue(obj7, information.ElementType);
}
}
else
{
CheckBoolValue(obj2, information.ElementType);
}
}
}
obj2 = LanguagePrimitives.ConvertTo(obj2, this._convertTypes[i], CultureInfo.InvariantCulture);
}
}
catch (PSInvalidCastException exception)
{
throw new ArgumentTransformationMetadataException(exception.Message, exception);
}
return(obj2);
}
