/// <summary>
/// Parses a contentsOfVariableName specification in composition XML in its short-hand form.
/// </summary>
public static object ParseWindowsRegistry(IEnumerable <XmlAttribute> attributes, XmlProcessingContext context)
{
string keyPath = null;
string valueName = null;
foreach (var attribute in attributes)
{
switch (attribute.Name)
{
case "windowsRegistryKeyPath":
keyPath = attribute.Value;
break;
case "windowsRegistryValueName":
valueName = attribute.Value;
break;
default:
context.ReportError(
string.Format("Attribute name {0} is not supported for windowsRegistry value elements.", attribute.Name));
return(null);
}
}
if (keyPath == null)
{
context.ReportError("Attribute 'windowsRegistryKeyPath' is required.");
return(null);
}
return(ParseWindowsRegistry(keyPath, valueName, context));
}
/// <summary>
/// Used for parsing short-hand form of specifying an object in the parent element
/// </summary>
public static object ParseObject(XmlAttribute[] attributes, XmlElement[] childElements, XmlProcessingContext context)
{
string typeName = null;
var initializePlugs = false;
foreach (var attribute in attributes)
{
switch (attribute.Name)
{
case "objectType":
typeName = attribute.Value;
break;
case "objectInitializePlugs":
initializePlugs = Boolean.Parse(attribute.Value);
break;
default:
context.ReportError(
string.Format("Attribute name {0} is not supported for object value elements.", attribute.Name));
return(null);
}
}
if (typeName == null)
{
context.ReportError("Attribute 'objectType' is required.");
return(null);
}
return(ParseObject(typeName, initializePlugs, childElements, context));
}
private static void ParseDictionaryItem(IDictionary result, XmlElement childElement,
XmlProcessingContext xmlProcessingContext)
{
if (childElement.GetElementsByTagName("Key").Count != 1)
{
xmlProcessingContext.ReportError(
"Each 'Item' in a 'Dictionary' should contain exactly one 'Key' element as a nested tag.");
return;
}
if (childElement.GetElementsByTagName("Value").Count != 1)
{
xmlProcessingContext.ReportError(
"Each 'Item' in a 'Dictionary' should contain exactly one 'Value' element as a nested tag.");
return;
}
xmlProcessingContext.EnterRunningLocation("Key");
var keyValue =
XmlValueParser.ParseValue((XmlElement)childElement.GetElementsByTagName("Key")[0], xmlProcessingContext, null);
xmlProcessingContext.LeaveRunningLocation();
xmlProcessingContext.EnterRunningLocation("Value");
var valueValue =
XmlValueParser.ParseValue((XmlElement)childElement.GetElementsByTagName("Value")[0], xmlProcessingContext, null);
xmlProcessingContext.LeaveRunningLocation();
result.Add(keyValue, valueValue);
}
/// <summary>
/// Parses a contentsOfVariableName specification in composition XML in its short-hand form.
/// </summary>
public static object ParseContentsOfVariable(IEnumerable <XmlAttribute> attributes, XmlProcessingContext context)
{
string variableName = null;
foreach (var attribute in attributes)
{
if (attribute.Name == "contentsOfVariableName")
{
variableName = attribute.Value;
}
else
{
context.ReportError(
string.Format("Attribute name {0} is not supported for contentsOfVariable value elements.", attribute.Name));
return(null);
}
}
if (variableName == null)
{
context.ReportError("Attribute 'contentsOfVariableName' is required.");
return(null);
}
return(ParseContentsOfVariable(variableName, context));
}
/// <summary>
/// Parses a ContentsOfVariable element in the composition XML.
/// </summary>
public static object ParseWindowsRegistry(XmlElement element, XmlProcessingContext context)
{
if (element.ChildNodes.Count > 0)
{
context.ReportError("'WindowsRegistry' elements should not contain any child elements.");
return(null);
}
string keyPath = null;
string valueName = null;
if (element.Attributes["keyPath"] != null)
{
keyPath = element.Attributes["keyPath"].Value;
}
if (element.Attributes["valueName"] != null)
{
valueName = element.Attributes["valueName"].Value;
}
if (keyPath == null)
{
context.ReportError("'WindowsRegistry' elements require a 'keyPath' attribute.");
return(null);
}
return(ParseWindowsRegistry(keyPath, valueName, context));
}
private static void ParseObjectProperty(object result, XmlElement childElement,
XmlProcessingContext xmlProcessingContext)
{
if (childElement.Attributes["name"] == null)
{
xmlProcessingContext.ReportError("'Property' element in the composition XML should have a 'name' attribute.");
return;
}
var propertyName = childElement.Attributes["name"].Value;
xmlProcessingContext.EnterRunningLocation(string.Format("Property({0})", propertyName));
var propertyInfo = result.GetType().GetProperty(propertyName);
if (propertyInfo == null)
{
xmlProcessingContext.ReportError(
string.Format("Object type '{0}' does not contain a property definition named '{1}", result.GetType().FullName,
propertyName));
xmlProcessingContext.LeaveRunningLocation();
return;
}
var propertyValue =
XmlValueParser.ParseValue(childElement, xmlProcessingContext, ObjectPropertyExcludedAttributes);
propertyInfo.SetValue(result, propertyValue, null);
xmlProcessingContext.LeaveRunningLocation();
}
/// <summary>
/// Used for parsing short-hand array specification in composition XML.
/// </summary>
public static Array ParseArray(IEnumerable <XmlAttribute> attributes, XmlElement[] childElements, XmlProcessingContext context)
{
string elementType = null;
foreach (var attribute in attributes)
{
if (attribute.Name == "arrayElementType")
{
elementType = attribute.Value;
}
else
{
context.ReportError(string.Format("Attribute name {0} is not supported for array value elements.", attribute.Name));
return(null);
}
}
if (elementType == null)
{
context.ReportError("Attribute 'arrayElementType' is required.");
return(null);
}
return(ParseArray(elementType, childElements, context));
}
/// <summary>
/// Parses an Assembly element in the composition XML.
/// </summary>
public static Assembly ParseAssembly(XmlElement element, XmlProcessingContext context)
{
if (element.ChildNodes.Count > 0)
{
context.ReportError("Type elements should not contain any child elements.");
return(null);
}
string assemblyName = null;
if (element.Attributes["name"] != null)
{
assemblyName = element.Attributes["name"].Value;
}
var result = ParseAssembly(assemblyName, context);
if (result == null)
{
context.EnterRunningLocation(string.Format("Assembly({0})", assemblyName));
context.ReportError("Could not load assembly '" + assemblyName + "'.");
context.LeaveRunningLocation();
return(null);
}
return(result);
}
/// <summary>
/// Parses a Ref specification in the short-hand form from a
/// composition XML.
/// </summary>
public static object ParseRef(IEnumerable <XmlAttribute> attributes, XmlProcessingContext context)
{
string refType = null;
string refName = null;
foreach (var attribute in attributes)
{
switch (attribute.Name)
{
case "refType":
refType = attribute.Value;
break;
case "refName":
refName = attribute.Value;
break;
default:
context.ReportError(
string.Format("Attribute name {0} is not supported for ref value elements.", attribute.Name));
return(null);
}
}
if (refType == null)
{
context.ReportError("Attribute 'refType' is required.");
return(null);
}
return(ParseRef(refType, refName, context));
}
private static void ParseObjectField(object result, XmlElement childElement, XmlProcessingContext xmlProcessingContext)
{
if (childElement.Attributes["name"] == null)
{
xmlProcessingContext.ReportError("'Field' element in the composition XML should have a 'name' attribute.");
return;
}
var fieldName = childElement.Attributes["name"].Value;
xmlProcessingContext.EnterRunningLocation(string.Format("Field({0})", fieldName));
var fieldInfo = result.GetType().GetField(fieldName);
if (fieldInfo == null)
{
xmlProcessingContext.ReportError(
string.Format("Object type '{0}' does not contain a field definition named '{1}", result.GetType().FullName,
fieldName));
xmlProcessingContext.LeaveRunningLocation();
return;
}
var fieldValue = XmlValueParser.ParseValue(childElement, xmlProcessingContext, objectFieldExcludedAttributes);
fieldInfo.SetValue(result, fieldValue);
xmlProcessingContext.LeaveRunningLocation();
}
/// <summary>
/// Actually parses an Enum specification in the composition XML, and
/// is used in both element form, and short-hand forms.
/// </summary>
public static object ParseEnum(string enumTypeName, string enumValue, XmlProcessingContext context)
{
if (enumTypeName == null)
{
throw new ArgumentNullException("enumTypeName");
}
if (enumValue == null)
{
throw new ArgumentNullException("enumValue");
}
context.EnterRunningLocation(string.Format("enum({0}, {1})", enumTypeName, enumValue));
var enumType = ParseType(enumTypeName, context);
if (enumType == null)
{
context.ReportError(string.Format("Type '{0}' could not be loaded.", enumTypeName));
return(null);
}
if (!enumType.IsValueType)
{
context.ReportError(
string.Format("Type '{0}' is not an enumeration type, and can not be used in <EnumValue> tag.", enumType));
return(null);
}
var result = Enum.Parse(enumType, enumValue);
context.LeaveRunningLocation();
return(result);
}
/// <summary>
/// Parses an enum value in its short-hand form in composition XML.
/// </summary>
public static object ParseEnum(IEnumerable <XmlAttribute> attributes, XmlProcessingContext context)
{
string enumType = null;
string enumValue = null;
foreach (var attribute in attributes)
{
switch (attribute.Name)
{
case "enumType":
enumType = attribute.Value;
break;
case "enumValue":
enumValue = attribute.Value;
break;
default:
context.ReportError(
string.Format("Attribute name {0} is not supported for enum value elements.", attribute.Name));
return(null);
}
}
if ((enumValue == null) || (enumType == null))
{
context.ReportError("Both 'enumType' and 'enumValue' attributes are required.");
return(null);
}
return(ParseEnum(enumType, enumValue, context));
}
public static byte[] ParseByteArray(string value, XmlProcessingContext context)
{
var filteredString = "";
// remove all none A-F, 0-9, characters
for (var i = 0; i < value.Length; i++)
{
var c = value[i];
if ((char.IsWhiteSpace(c)) ||
(c == '-') ||
(c == '_'))
{
continue;
}
if (!char.IsLetterOrDigit(c))
{
context.ReportError("Character is not allowed in a hex string: '" + c + "', ignoring.");
continue;
}
c = char.ToUpper(c);
if ((char.IsLetter(c)) && ((c > 'F') || (c < 'A')))
{
context.ReportError("Character is not allowed in a hex string: '" + c + "', ignoring.");
continue;
}
filteredString += c;
}
// if odd number of characters, add a zero to the beginning
if (filteredString.Length % 2 != 0)
{
filteredString = "0" + filteredString;
}
var byteLength = filteredString.Length / 2;
var result = new byte[byteLength];
for (var i = 0; i < result.Length; i++)
{
result[i] = byte.Parse(filteredString.Substring(i << 1, 2), NumberStyles.HexNumber);
}
return(result);
}
/// <summary>
/// Used for parsing short-hand specification of dictionaries in
/// the composition XML.
/// </summary>
public static IDictionary ParseDictionary(IEnumerable <XmlAttribute> attributes, XmlElement[] childElements,
XmlProcessingContext context)
{
string keyType = null;
string valueType = null;
foreach (var attribute in attributes)
{
switch (attribute.Name)
{
case "dictionaryKeyType":
keyType = attribute.Value;
break;
case "dictionaryValueType":
valueType = attribute.Value;
break;
default:
context.ReportError(string.Format("Attribute name {0} is not supported for array value elements.", attribute.Name));
return(null);
}
}
return(ParseDictionary(keyType, valueType, childElements, context));
}
/// <summary>
/// Actually parses an array, and is used in both short-hand and separate
/// element formats of array specification.
/// </summary>
public static Array ParseArray(string elementTypeName, XmlElement[] childElements, XmlProcessingContext context)
{
context.EnterRunningLocation(string.Format("Array({0})", elementTypeName ?? "object"));
var elementType = typeof(object);
if (elementTypeName != null)
{
elementType = SimpleTypeParserUtil.ParseType(elementTypeName, context);
if (elementType == null)
{
context.ReportError(string.Format("Type '{0}' could not be loaded.", elementTypeName));
return(null);
}
}
var arrayElements = GetCollectionElements(childElements, elementType, context);
var result = Array.CreateInstance(elementType, arrayElements.Count);
for (var i = 0; i < result.Length; i++)
{
result.SetValue(arrayElements[i], i);
}
context.LeaveRunningLocation();
return(result);
}
/// <summary>
/// Used for parsing an Object element in the composition XML.
/// </summary>
public static object ParseObject(XmlElement element, XmlProcessingContext context)
{
string typeName = null;
var initializePlugs = false;
if (element.Attributes["type"] != null)
{
typeName = element.Attributes["type"].Value;
}
if (element.Attributes["initializePlugs"] != null)
{
initializePlugs = Boolean.Parse(element.Attributes["initializePlugs"].Value);
}
if (typeName == null)
{
context.ReportError("'Object' element in the composition XML should have a 'type' attribute.");
return(null);
}
var childElements = new List <XmlElement>();
foreach (XmlNode childNode in element.ChildNodes)
{
if (childNode is XmlElement)
{
childElements.Add((XmlElement)childNode);
}
}
return(ParseObject(typeName, initializePlugs, childElements.ToArray(), context));
}
/// <summary>
/// Actually parses the contents of lists from composition XMLs, and is
/// used in both short-hand form and complete form of list specification.
/// </summary>
public static IList ParseList(string elementTypeName, XmlElement[] childElements, XmlProcessingContext context)
{
context.EnterRunningLocation(string.Format("List({0})", elementTypeName ?? "object"));
var elementType = typeof(object);
if (elementTypeName != null)
{
elementType = SimpleTypeParserUtil.ParseType(elementTypeName, context);
if (elementType == null)
{
context.ReportError(string.Format("Type '{0}' could not be loaded.", elementTypeName));
context.LeaveRunningLocation();
return(null);
}
}
var listElements = GetCollectionElements(childElements, elementType, context);
var listType = Type.GetType(string.Format("System.Collections.Generic.List`1[[{0}]]",
elementType.AssemblyQualifiedName));
var result = (IList)Activator.CreateInstance(listType);
foreach (var o in listElements)
{
result.Add(o);
}
context.LeaveRunningLocation();
return(result);
}
internal static void ProcessCompositionXml(Stream configurationStream, XmlProcessingContext xmlProcessingContext)
{
if (configurationStream == null)
{
throw new ArgumentNullException(nameof(configurationStream));
}
var xsdStream =
typeof(AssemblyPointer).Assembly.GetManifestResourceStream(
"ComposerCore.CompositionXml.Schema.compositionXml.1.0.xsd");
if (xsdStream == null)
{
throw new NullReferenceException("Could not load XSD resource from DLL.");
}
var schema =
XmlSchema.Read(
xsdStream,
(sender, e) => throw new CompositionXmlValidationException(
"Could not load XSD for Composition XML. Message: " + e.Message + "; Sender: " +
sender, e.Exception));
var schemaSet = new XmlSchemaSet();
schemaSet.Add(schema);
var settings = new XmlReaderSettings {
ValidationType = ValidationType.Schema, Schemas = schemaSet
};
settings.ValidationEventHandler += delegate(object sender, ValidationEventArgs e)
{
var errorMessage = "Composition XML Schema Validation error: ";
if (e.Exception is XmlSchemaValidationException validationException)
{
errorMessage += "Line: " + validationException.LineNumber + ", Position: " +
validationException.LinePosition +
"; " + validationException.Message;
}
else
{
errorMessage += "Message: " + e.Message + "; Sender: " + sender +
"; Inner exception: " + e.Exception.Message;
}
xmlProcessingContext.ReportError(errorMessage);
};
var serializer = new XmlSerializer(typeof(CompositionInfo));
var reader = XmlReader.Create(configurationStream, settings);
var info = (CompositionInfo)serializer.Deserialize(reader);
info.Validate();
CompositionInfoApplicator.ApplyCompositionInfo(info, xmlProcessingContext);
}
/// <summary>
/// Parses a contentsOfVariableName specification in composition XML in its short-hand form.
/// </summary>
public static object ParseTimeSpan(IEnumerable <XmlAttribute> attributes, XmlProcessingContext context)
{
// Declare variables for possible input values
string timeSpanString = null;
int? days = null;
int? hours = null;
int? minutes = null;
int? seconds = null;
int? milliseconds = null;
long? ticks = null;
// Extract input values from the attributes (can be in any order)
foreach (var attribute in attributes)
{
switch (attribute.Name)
{
case "timeSpan":
timeSpanString = attribute.Value;
break;
case "timeSpanDays":
days = Int32.Parse(attribute.Value);
break;
case "timeSpanHours":
hours = Int32.Parse(attribute.Value);
break;
case "timeSpanMinutes":
minutes = Int32.Parse(attribute.Value);
break;
case "timeSpanSeconds":
seconds = Int32.Parse(attribute.Value);
break;
case "timeSpanMilliseconds":
milliseconds = Int32.Parse(attribute.Value);
break;
case "timeSpanTicks":
ticks = Int64.Parse(attribute.Value);
break;
default:
context.ReportError(
string.Format("Attribute name {0} is not supported for timeSpan value elements.", attribute.Name));
return(null);
}
}
// Validate and parse the extracted values
return(ParseTimeSpan(timeSpanString, days, hours, minutes, seconds, milliseconds, ticks, context));
}
private static List <object> GetCollectionElements(XmlElement[] xmlElements, Type elementType,
XmlProcessingContext xmlProcessingContext)
{
var arrayElements = new List <object>();
for (var i = 0; i < xmlElements.Length; i++)
{
xmlProcessingContext.EnterRunningLocation(string.Format("Item({0})", i));
var childElement = xmlElements[i];
if (childElement.Name == "Item")
{
var arrayElement = XmlValueParser.ParseValue(childElement, xmlProcessingContext, null);
if ((arrayElement != null) && (!elementType.IsInstanceOfType(arrayElement)))
{
xmlProcessingContext.ReportError(
string.Format("Array of the element type {0} can not contain items with type {1}.", elementType.FullName,
arrayElement.GetType().FullName));
xmlProcessingContext.LeaveRunningLocation();
return(null);
}
arrayElements.Add(arrayElement);
}
else
{
xmlProcessingContext.ReportError(
string.Format("Xml element '{0}' is not allowed in 'Array' element - type: {1}[]", childElement.Name,
elementType.FullName));
xmlProcessingContext.LeaveRunningLocation();
return(null);
}
xmlProcessingContext.LeaveRunningLocation();
}
return(arrayElements);
}
private static object[] ParseConstructorArgs(XmlElement element,
XmlProcessingContext xmlProcessingContext)
{
if (element.Name != "ConstructorArgs")
{
throw new ArgumentException("Calling this method is only valid for 'ConstructorArgs' element.");
}
if (element.HasAttributes)
{
xmlProcessingContext.ReportError("'ConstructorArgs' element should not have any attributes.");
}
xmlProcessingContext.EnterRunningLocation("ConstructorArgs");
var result = new List <object>();
foreach (XmlNode childNode in element.ChildNodes)
{
var childElement = childNode as XmlElement;
if (childElement == null)
{
continue;
}
if (childElement.Name == "Arg")
{
result.Add(XmlValueParser.ParseValue(childElement, xmlProcessingContext, null));
}
else
{
xmlProcessingContext.ReportError(
string.Format("Element '{0}' is not allowed in the 'ConstructorArgs' element.", childElement.Name));
}
}
xmlProcessingContext.LeaveRunningLocation();
return(result.ToArray());
}
internal static void ProcessCompositionXmlFromResource(Assembly assembly, string configurationResourceName,
XmlProcessingContext xmlProcessingContext)
{
var stream = assembly.GetManifestResourceStream(configurationResourceName);
if (stream == null)
{
xmlProcessingContext.ReportError($"Resource name '{configurationResourceName}' could not be loaded from assembly '{assembly.FullName}'.");
return;
}
ProcessCompositionXml(stream, xmlProcessingContext);
}
/// <summary>
/// Parses a ContentsOfVariable element in the composition XML.
/// </summary>
public static object ParseContentsOfVariable(XmlElement element, XmlProcessingContext context)
{
if (element.ChildNodes.Count > 0)
{
context.ReportError("'ContentsOfVariable' elements should not contain any child elements.");
return(null);
}
string variableName = null;
if (element.Attributes["name"] != null)
{
variableName = element.Attributes["name"].Value;
}
if (variableName == null)
{
context.ReportError("'ContentsOfVariable' elements require a 'name' attribute.");
return(null);
}
return(ParseContentsOfVariable(variableName, context));
}
/// <summary>
/// Parses an assembly specification in composition XML in its short-hand form.
/// </summary>
public static Assembly ParseAssembly(IEnumerable <XmlAttribute> attributes, XmlProcessingContext context)
{
string assemblyName = null;
foreach (var attribute in attributes)
{
if (attribute.Name == "assemblyName")
{
assemblyName = attribute.Value;
}
else
{
context.ReportError(
string.Format("Attribute name {0} is not supported for assembly value elements.", attribute.Name));
return(null);
}
}
if (assemblyName == null)
{
context.ReportError("Attribute 'assemblyName' is required.");
return(null);
}
var result = ParseAssembly(assemblyName, context);
if (result == null)
{
context.EnterRunningLocation(string.Format("Assembly({0})", assemblyName));
context.ReportError("Could not load assembly '" + assemblyName + "'.");
context.LeaveRunningLocation();
return(null);
}
return(result);
}
/// <summary>
/// Parses a type specification in composition XML in its short-hand form.
/// </summary>
public static Type ParseType(IEnumerable <XmlAttribute> attributes, XmlProcessingContext context)
{
string typeName = null;
foreach (var attribute in attributes)
{
if (attribute.Name == "typeName")
{
typeName = attribute.Value;
}
else
{
context.ReportError(string.Format("Attribute name {0} is not supported for type value elements.", attribute.Name));
return(null);
}
}
if (typeName == null)
{
context.ReportError("Attribute 'typeName' is required.");
return(null);
}
var result = ParseType(typeName, context);
if (result == null)
{
context.EnterRunningLocation(string.Format("Type({0})", typeName));
context.ReportError("Could not load type '" + typeName + "'.");
context.LeaveRunningLocation();
return(null);
}
return(result);
}
internal static void ProcessCompositionXml(string configurationPath, XmlProcessingContext xmlProcessingContext)
{
if (configurationPath == null)
{
throw new ArgumentNullException(nameof(configurationPath));
}
if (!File.Exists(configurationPath))
{
xmlProcessingContext.ReportError($"Specified configuration file '{configurationPath}' does not exist.");
return;
}
using (Stream configurationStream = File.Open(configurationPath, FileMode.Open, FileAccess.Read))
{
ProcessCompositionXml(configurationStream, xmlProcessingContext);
}
}
/// <summary>
/// Parses a Ref element in the composition XML.
/// </summary>
public static object ParseRef(XmlElement element, XmlProcessingContext context)
{
if (element.ChildNodes.Count > 0)
{
context.ReportError("Ref elements should not contain any child elements.");
return(null);
}
string refType = null;
string refName = null;
if (element.Attributes["type"] != null)
{
refType = element.Attributes["type"].Value;
}
if (element.Attributes["name"] != null)
{
refName = element.Attributes["name"].Value;
}
return(ParseRef(refType, refName, context));
}
/// <summary>
/// Actually parses the contents on Ref specification in composition XML.
/// Looks up the referenced component in the component context, and returns the result.
/// Is used both in short-hand form and element form on Ref specification.
/// </summary>
public static object ParseRef(string refTypeName, string refName, XmlProcessingContext context)
{
if (refTypeName == null)
{
throw new ArgumentNullException("refTypeName");
}
context.EnterRunningLocation(string.Format("Ref({0})", refTypeName));
var refType = ParseType(refTypeName, context);
if (refType == null)
{
context.ReportError(string.Format("Type '{0}' could not be loaded.", refTypeName));
return(null);
}
var result = context.ComponentContext.GetComponent(refType, refName);
context.LeaveRunningLocation();
return(result);
}
/// <summary>
/// Parses an Enum element in a composition XML.
/// </summary>
public static object ParseEnum(XmlElement element, XmlProcessingContext context)
{
if (element.ChildNodes.Count > 0)
{
context.ReportError("Enum elements should not contain any child elements.");
return(null);
}
string enumTypeName = null;
string enumValue = null;
if (element.Attributes["type"] != null)
{
enumTypeName = element.Attributes["type"].Value;
}
if (element.Attributes["value"] != null)
{
enumValue = element.Attributes["value"].Value;
}
return(ParseEnum(enumTypeName, enumValue, context));
}
/// <summary>
/// Actually parses the object and returns the result. Used both in short-hand
/// form and in direct Object element parsing.
/// </summary>
public static object ParseObject(string typeName, bool initializePlugs, XmlElement[] childElements,
XmlProcessingContext context)
{
context.EnterRunningLocation(string.Format("Object({0})", typeName));
// Look for constructor arguments.
// Set default to null, so that Activator calls default constructor
// in case the the "ConstructorArgs" element is not specified.
object[] constructorArguments = null;
foreach (var childElement in childElements)
{
if (childElement.Name != "ConstructorArgs")
{
continue;
}
// Check if this is the second "ConstructorArgs" element.
// If so, report an error and return.
if (constructorArguments != null)
{
context.ReportError("The 'ConstructorArgs' element can be specified maximum once in an 'Object' element.");
context.LeaveRunningLocation();
return(null);
}
constructorArguments = ParseConstructorArgs(childElement, context);
context.ThrowIfErrors();
}
// Resolve the "Type" for the object to be instantiated
var objectType = SimpleTypeParserUtil.ParseType(typeName, context);
if (objectType == null)
{
context.ReportError(string.Format("Type '{0}' could not be loaded.", typeName));
context.LeaveRunningLocation();
return(null);
}
// Use Activator class to instantiate the object
var result = Activator.CreateInstance(objectType, constructorArguments);
if (initializePlugs)
{
context.ComponentContext.InitializePlugs(result, objectType);
}
foreach (var childElement in childElements)
{
switch (childElement.Name)
{
case "ConstructorArgs":
break;
case "Property":
ParseObjectProperty(result, childElement, context);
break;
case "Field":
ParseObjectField(result, childElement, context);
break;
default: // Also: case "ConstructorArgs"
context.ReportError(
string.Format("Xml element '{0}' is not allowed in 'Object' element - type: {1}", childElement.Name,
typeName));
context.LeaveRunningLocation();
return(null);
}
}
context.LeaveRunningLocation();
return(result);
}