} // IsValidValue
/// <summary>
/// Runs all ArgumentTransformationAttributes that are specified in the Attributes
/// collection on the given value in the order that they are in the collection.
/// </summary>
/// <param name="attributes">
/// The attributes to use to transform the value.
/// </param>
/// <param name="value">
/// The value to be transformed.
/// </param>
/// <returns>
/// The transformed value.
/// </returns>
/// <exception cref="ArgumentTransformationMetadataException">
/// If the argument transformation fails.
/// </exception>
internal static object TransformValue(IEnumerable <Attribute> attributes, object value)
{
Diagnostics.Assert(attributes != null, "caller to verify attributes is not null");
object result = value;
// Get an EngineIntrinsics instance using the context of the thread.
ExecutionContext context = Runspaces.LocalPipeline.GetExecutionContextFromTLS();
EngineIntrinsics engine = null;
if (context != null)
{
engine = context.EngineIntrinsics;
}
foreach (Attribute attribute in attributes)
{
ArgumentTransformationAttribute transformationAttribute =
attribute as ArgumentTransformationAttribute;
if (transformationAttribute != null)
{
result = transformationAttribute.Transform(engine, result);
}
}
return(result);
}
private void ProcessAttribute(string memberName, Attribute attribute)
{
if (attribute != null)
{
this.attributes.Add(attribute);
ParameterAttribute parameter = attribute as ParameterAttribute;
if (parameter != null)
{
this.ProcessParameterAttribute(memberName, parameter);
}
else
{
AliasAttribute attribute3 = attribute as AliasAttribute;
if (attribute3 != null)
{
this.ProcessAliasAttribute(attribute3);
}
else
{
ArgumentTransformationAttribute item = attribute as ArgumentTransformationAttribute;
if (item != null)
{
this.argumentTransformationAttributes.Add(item);
}
else
{
ValidateArgumentsAttribute attribute5 = attribute as ValidateArgumentsAttribute;
if (attribute5 != null)
{
this.validationAttributes.Add(attribute5);
}
else if (attribute is AllowNullAttribute)
{
this.allowsNullArgument = true;
}
else if (attribute is AllowEmptyStringAttribute)
{
this.allowsEmptyStringArgument = true;
}
else if (attribute is AllowEmptyCollectionAttribute)
{
this.allowsEmptyCollectionArgument = true;
}
else
{
PSTypeNameAttribute attribute9 = attribute as PSTypeNameAttribute;
if (attribute9 != null)
{
this.PSTypeName = attribute9.PSTypeName;
}
}
}
}
}
}
}
internal static object TransformValue(IEnumerable <Attribute> attributes, object value)
{
object inputData = value;
ExecutionContext executionContextFromTLS = LocalPipeline.GetExecutionContextFromTLS();
EngineIntrinsics engineIntrinsics = null;
if (executionContextFromTLS != null)
{
engineIntrinsics = executionContextFromTLS.EngineIntrinsics;
}
foreach (Attribute attribute in attributes)
{
ArgumentTransformationAttribute attribute2 = attribute as ArgumentTransformationAttribute;
if (attribute2 != null)
{
inputData = attribute2.Transform(engineIntrinsics, inputData);
}
}
return(inputData);
}
private object VerifyNewAttribute(Attribute item)
{
object inputData = this.variable.Value;
ArgumentTransformationAttribute attribute = item as ArgumentTransformationAttribute;
if (attribute != null)
{
ExecutionContext executionContextFromTLS = LocalPipeline.GetExecutionContextFromTLS();
EngineIntrinsics engineIntrinsics = null;
if (executionContextFromTLS != null)
{
engineIntrinsics = executionContextFromTLS.EngineIntrinsics;
}
inputData = attribute.Transform(engineIntrinsics, inputData);
}
if (!PSVariable.IsValidValue(inputData, item))
{
ValidationMetadataException exception = new ValidationMetadataException("ValidateSetFailure", null, Metadata.InvalidMetadataForCurrentValue, new object[] { this.variable.Name, (this.variable.Value != null) ? this.variable.Value.ToString() : "" });
throw exception;
}
return(inputData);
}
/// <summary>
/// Validates and performs any transformations that the new attribute
/// implements.
/// </summary>
/// <param name="item">
/// The new attribute to be added to the collection.
/// </param>
/// <returns>
/// The new variable value. This may change from the original value if the
/// new attribute is an ArgumentTransformationAttribute.
/// </returns>
private object VerifyNewAttribute(Attribute item)
{
object variableValue = _variable.Value;
// Perform transformation before validating
ArgumentTransformationAttribute argumentTransformation = item as ArgumentTransformationAttribute;
if (argumentTransformation != null)
{
// Get an EngineIntrinsics instance using the context of the thread.
ExecutionContext context = Runspaces.LocalPipeline.GetExecutionContextFromTLS();
EngineIntrinsics engine = null;
if (context != null)
{
engine = context.EngineIntrinsics;
}
variableValue = argumentTransformation.TransformInternal(engine, variableValue);
}
if (!PSVariable.IsValidValue(variableValue, item))
{
ValidationMetadataException e = new ValidationMetadataException(
"ValidateSetFailure",
null,
Metadata.InvalidMetadataForCurrentValue,
_variable.Name,
((_variable.Value != null) ? _variable.Value.ToString() : string.Empty));
throw e;
}
return(variableValue);
}
/// <summary>
/// Processes the Attribute metadata to generate a CompiledCommandAttribute.
/// </summary>
/// <exception cref="MetadataException">
/// If the attribute is a parameter attribute and another parameter attribute
/// has been processed with the same parameter-set name.
/// </exception>
private void ProcessAttribute(
string memberName,
Attribute attribute,
ref Collection <ValidateArgumentsAttribute> validationAttributes,
ref Collection <ArgumentTransformationAttribute> argTransformationAttributes,
ref string[] aliases)
{
if (attribute == null)
{
return;
}
CompiledAttributes.Add(attribute);
// Now process the attribute based on it's type
if (attribute is ParameterAttribute paramAttr)
{
ProcessParameterAttribute(memberName, paramAttr);
return;
}
ValidateArgumentsAttribute validateAttr = attribute as ValidateArgumentsAttribute;
if (validateAttr != null)
{
if (validationAttributes == null)
{
validationAttributes = new Collection <ValidateArgumentsAttribute>();
}
validationAttributes.Add(validateAttr);
if ((attribute is ValidateNotNullAttribute) || (attribute is ValidateNotNullOrEmptyAttribute))
{
this.CannotBeNull = true;
}
return;
}
AliasAttribute aliasAttr = attribute as AliasAttribute;
if (aliasAttr != null)
{
if (aliases == null)
{
aliases = aliasAttr.aliasNames;
}
else
{
var prevAliasNames = aliases;
var newAliasNames = aliasAttr.aliasNames;
aliases = new string[prevAliasNames.Length + newAliasNames.Length];
Array.Copy(prevAliasNames, aliases, prevAliasNames.Length);
Array.Copy(newAliasNames, 0, aliases, prevAliasNames.Length, newAliasNames.Length);
}
return;
}
ArgumentTransformationAttribute argumentAttr = attribute as ArgumentTransformationAttribute;
if (argumentAttr != null)
{
if (argTransformationAttributes == null)
{
argTransformationAttributes = new Collection <ArgumentTransformationAttribute>();
}
argTransformationAttributes.Add(argumentAttr);
return;
}
AllowNullAttribute allowNullAttribute = attribute as AllowNullAttribute;
if (allowNullAttribute != null)
{
this.AllowsNullArgument = true;
return;
}
AllowEmptyStringAttribute allowEmptyStringAttribute = attribute as AllowEmptyStringAttribute;
if (allowEmptyStringAttribute != null)
{
this.AllowsEmptyStringArgument = true;
return;
}
AllowEmptyCollectionAttribute allowEmptyCollectionAttribute = attribute as AllowEmptyCollectionAttribute;
if (allowEmptyCollectionAttribute != null)
{
this.AllowsEmptyCollectionArgument = true;
return;
}
ObsoleteAttribute obsoleteAttr = attribute as ObsoleteAttribute;
if (obsoleteAttr != null)
{
ObsoleteAttribute = obsoleteAttr;
return;
}
PSTypeNameAttribute psTypeNameAttribute = attribute as PSTypeNameAttribute;
if (psTypeNameAttribute != null)
{
this.PSTypeName = psTypeNameAttribute.PSTypeName;
}
}
