/// <include file='doc\InstanceDescriptorCodeDomSerializer.uex' path='docs/doc[@for="InstanceDescriptorCodeDomSerializer.SerializeInstanceDescriptor"]/*' />
/// <devdoc>
/// Serializes the given instance descriptor into a code model expression.
/// </devdoc>
private object SerializeInstanceDescriptor(IDesignerSerializationManager manager, object value, InstanceDescriptor descriptor)
{
Debug.WriteLineIf(traceSerialization.TraceVerbose, "InstanceDescriptorCodeDomSerializer::SerializeInstanceDescriptor");
Debug.Indent();
Debug.WriteLineIf(traceSerialization.TraceVerbose, "Member: " + descriptor.MemberInfo.Name);
Debug.WriteLineIf(traceSerialization.TraceVerbose, "Argument count: " + descriptor.Arguments.Count);
// Serialize all of the arguments.
//
CodeExpression[] arguments = new CodeExpression[descriptor.Arguments.Count];
int i = 0;
bool paramsOk = true;
foreach (object argument in descriptor.Arguments)
{
CodeValueExpression codeValue = new CodeValueExpression(null, argument, (argument != null ? argument.GetType() : null));
manager.Context.Push(codeValue);
try {
arguments[i] = SerializeToExpression(manager, argument);
if (arguments[i] == null)
{
Debug.WriteLineIf(traceSerialization.TraceWarning, "WARNING: Parameter " + i.ToString() + " in instance descriptor call " + descriptor.GetType().Name + " could not be serialized.");
paramsOk = false;
break;
}
}
finally {
manager.Context.Pop();
}
i++;
}
CodeExpression expression = null;
if (paramsOk)
{
Type expressionType = descriptor.MemberInfo.DeclaringType;
CodeTypeReference typeRef = new CodeTypeReference(expressionType);
if (descriptor.MemberInfo is ConstructorInfo)
{
expression = new CodeObjectCreateExpression(typeRef, arguments);
}
else if (descriptor.MemberInfo is MethodInfo)
{
CodeTypeReferenceExpression typeRefExp = new CodeTypeReferenceExpression(typeRef);
CodeMethodReferenceExpression methodRef = new CodeMethodReferenceExpression(typeRefExp, descriptor.MemberInfo.Name);
expression = new CodeMethodInvokeExpression(methodRef, arguments);
expressionType = ((MethodInfo)descriptor.MemberInfo).ReturnType;
}
else if (descriptor.MemberInfo is PropertyInfo)
{
CodeTypeReferenceExpression typeRefExp = new CodeTypeReferenceExpression(typeRef);
CodePropertyReferenceExpression propertyRef = new CodePropertyReferenceExpression(typeRefExp, descriptor.MemberInfo.Name);
Debug.Assert(arguments.Length == 0, "Property serialization does not support arguments");
expression = propertyRef;
expressionType = ((PropertyInfo)descriptor.MemberInfo).PropertyType;
}
else if (descriptor.MemberInfo is FieldInfo)
{
Debug.Assert(arguments.Length == 0, "Field serialization does not support arguments");
CodeTypeReferenceExpression typeRefExp = new CodeTypeReferenceExpression(typeRef);
expression = new CodeFieldReferenceExpression(typeRefExp, descriptor.MemberInfo.Name);
expressionType = ((FieldInfo)descriptor.MemberInfo).FieldType;
}
else
{
Debug.Fail("Unrecognized reflection type in instance descriptor: " + descriptor.MemberInfo.GetType().Name);
}
// Finally, check to see if our value is assignable from the expression type. If not,
// then supply a cast. The value may be an internal or protected type; if it is,
// then walk up its hierarchy until we find one that is public.
//
Type targetType = value.GetType();
while (!targetType.IsPublic)
{
targetType = targetType.BaseType;
}
if (!targetType.IsAssignableFrom(expressionType))
{
Debug.WriteLineIf(traceSerialization.TraceVerbose, "Target type of " + targetType.Name + " is not assignable from " + expressionType.Name + ". Supplying cast.");
expression = new CodeCastExpression(targetType, expression);
}
}
Debug.Unindent();
return(expression);
}
/// <include file='doc\InstanceDescriptorCodeDomSerializer.uex' path='docs/doc[@for="InstanceDescriptorCodeDomSerializer.Serialize"]/*' />
/// <devdoc>
/// Serializes the given object into a CodeDom object.
/// </devdoc>
public override object Serialize(IDesignerSerializationManager manager, object value)
{
object expression = null;
Debug.WriteLineIf(traceSerialization.TraceVerbose, "InstanceDescriptorCodeDomSerializer::Serialize");
Debug.Indent();
// To serialize a primitive type, we must assign its value to the current statement. We get the current
// statement by asking the context.
object statement = manager.Context.Current;
Debug.Assert(statement != null, "Statement is null -- we need a context to be pushed for instance descriptors to serialize");
Debug.WriteLineIf(traceSerialization.TraceVerbose, "Value: " + value.ToString());
Debug.WriteLineIf(traceSerialization.TraceVerbose && statement != null, "Statement: " + statement.GetType().Name);
TypeConverter converter = TypeDescriptor.GetConverter(value);
InstanceDescriptor descriptor = (InstanceDescriptor)converter.ConvertTo(value, typeof(InstanceDescriptor));
if (descriptor != null)
{
expression = SerializeInstanceDescriptor(manager, value, descriptor);
}
else
{
Debug.WriteLineIf(traceSerialization.TraceError, "*** Converter + " + converter.GetType().Name + " failed to give us an instance descriptor");
}
// Ok, we have the "new Foo(arg, arg, arg)" done. Next, check to see if the instance
// descriptor has given us a complete representation of the object. If not, we must
// go through the additional work of creating a local variable and saving properties.
//
if (descriptor != null && !descriptor.IsComplete)
{
Debug.WriteLineIf(traceSerialization.TraceVerbose, "Incomplete instance descriptor; creating local variable declaration and serializing properties.");
CodeStatementCollection statements = (CodeStatementCollection)manager.Context[typeof(CodeStatementCollection)];
Debug.WriteLineIf(traceSerialization.TraceError && statements == null, "*** No CodeStatementCollection on context stack so we can generate a local variable statement.");
if (statements != null)
{
MemberInfo mi = descriptor.MemberInfo;
Type targetType;
if (mi is PropertyInfo)
{
targetType = ((PropertyInfo)mi).PropertyType;
}
else if (mi is MethodInfo)
{
targetType = ((MethodInfo)mi).ReturnType;
}
else
{
targetType = mi.DeclaringType;
}
string localName = manager.GetName(value);
if (localName == null)
{
string baseName;
INameCreationService ns = (INameCreationService)manager.GetService(typeof(INameCreationService));
Debug.WriteLineIf(traceSerialization.TraceWarning && (ns == null), "WARNING: Need to generate name for local variable but we have no service.");
if (ns != null)
{
baseName = ns.CreateName(null, targetType);
}
else
{
baseName = targetType.Name.ToLower(CultureInfo.InvariantCulture);
}
int suffixIndex = 1;
// Declare this name to the serializer. If there is already a name defined,
// keep trying.
//
while (true)
{
localName = baseName + suffixIndex.ToString();
if (manager.GetInstance(localName) == null)
{
manager.SetName(value, localName);
break;
}
suffixIndex++;
}
}
Debug.WriteLineIf(traceSerialization.TraceVerbose, "Named local variable " + localName);
CodeVariableDeclarationStatement localStatement = new CodeVariableDeclarationStatement(targetType, localName);
localStatement.InitExpression = (CodeExpression)expression;
statements.Add(localStatement);
expression = new CodeVariableReferenceExpression(localName);
// Create a CodeValueExpression to place on the context stack.
CodeValueExpression cve = new CodeValueExpression((CodeExpression)expression, value);
manager.Context.Push(cve);
try {
// Now that we have hooked the return expression up and declared the local,
// it's time to save off the properties for the object.
//
SerializeProperties(manager, statements, value, runTimeProperties);
}
finally {
Debug.Assert(manager.Context.Current == cve, "Context stack corrupted");
manager.Context.Pop();
}
}
}
Debug.Unindent();
return(expression);
}
/// <include file='doc\CollectionCodeDomSerializer.uex' path='docs/doc[@for="CollectionCodeDomSerializer.SerializeViaAddRange"]/*' />
/// <devdoc>
/// Serializes the given collection by creating an array and passing it to the AddRange method.
/// </devdoc>
private object SerializeViaAddRange(
IDesignerSerializationManager manager,
CodePropertyReferenceExpression propRef,
ICollection collection,
MethodInfo addRangeMethod,
ParameterInfo parameter,
object targetObject)
{
Debug.WriteLineIf(traceSerialization.TraceVerbose, "CollectionCodeDomSerializer::SerializeViaAddRange");
Debug.Indent();
Debug.WriteLineIf(traceSerialization.TraceVerbose, "Collection: " + collection.GetType().Name);
Debug.WriteLineIf(traceSerialization.TraceVerbose, "Elements: " + collection.Count.ToString());
CodeStatementCollection statements = new CodeStatementCollection();
MethodInfo clearMethod = collection.GetType().GetMethod("Clear", new Type[0]);
if (clearMethod != null)
{
PropertyDescriptor clearProp = manager.Properties["ClearCollections"];
if (clearProp != null && clearProp.PropertyType == typeof(bool) && ((bool)clearProp.GetValue(manager) == true))
{
// insert code here to clear the collecion...
//
statements.Add(new CodeMethodInvokeExpression(propRef, "Clear"));
}
}
if (collection.Count == 0)
{
Debug.Unindent();
return(statements);
}
// We must walk the collection looking for privately inherited objects. If we find them,
// we need to exclude them from the array.
//
ArrayList arrayList = new ArrayList(collection.Count);
bool isTargetInherited = false;
InheritedPropertyDescriptor inheritedDesc = manager.Context[typeof(PropertyDescriptor)] as InheritedPropertyDescriptor;
if (inheritedDesc != null)
{
isTargetInherited = true;
collection = GetCollectionDelta(inheritedDesc.OriginalValue as ICollection, collection);
if (collection.Count == 0)
{
Debug.Unindent();
return(statements);
}
}
CodeValueExpression codeValue = new CodeValueExpression(null, collection, parameter.ParameterType.GetElementType());
manager.Context.Push(codeValue);
try {
foreach (object o in collection)
{
// If this object is being privately inherited, it cannot be inside
// this collection.
//
bool genCode = !(o is IComponent);
if (!genCode)
{
InheritanceAttribute ia = (InheritanceAttribute)TypeDescriptor.GetAttributes(o)[typeof(InheritanceAttribute)];
if (ia != null)
{
if (ia.InheritanceLevel == InheritanceLevel.InheritedReadOnly)
{
genCode = false;
}
else if (ia.InheritanceLevel == InheritanceLevel.Inherited && isTargetInherited)
{
genCode = false;
}
else
{
genCode = true;
}
}
else
{
genCode = true;
}
}
if (genCode)
{
CodeExpression exp = SerializeToExpression(manager, o);
if (exp != null)
{
arrayList.Add(exp);
}
}
}
}
finally {
manager.Context.Pop();
}
if (arrayList.Count > 0)
{
// Now convert the array list into an array create expression.
//
CodeTypeReference elementTypeRef = new CodeTypeReference(parameter.ParameterType.GetElementType());
// Now create an ArrayCreateExpression, and fill its initializers.
//
CodeArrayCreateExpression arrayCreate = new CodeArrayCreateExpression();
arrayCreate.CreateType = elementTypeRef;
foreach (CodeExpression exp in arrayList)
{
arrayCreate.Initializers.Add(exp);
}
CodeMethodReferenceExpression methodRef = new CodeMethodReferenceExpression(propRef, addRangeMethod.Name);
CodeMethodInvokeExpression methodInvoke = new CodeMethodInvokeExpression();
methodInvoke.Method = methodRef;
methodInvoke.Parameters.Add(arrayCreate);
statements.Add(new CodeExpressionStatement(methodInvoke));
}
Debug.Unindent();
return(statements);
}
/// <include file='doc\CollectionCodeDomSerializer.uex' path='docs/doc[@for="CollectionCodeDomSerializer.SerializeViaAdd"]/*' />
/// <devdoc>
/// Serializes the given collection by creating multiple calls to an Add method.
/// </devdoc>
private object SerializeViaAdd(
IDesignerSerializationManager manager,
CodePropertyReferenceExpression propRef,
ICollection collection,
MethodInfo addMethod,
ParameterInfo parameter,
object targetObject)
{
Debug.WriteLineIf(traceSerialization.TraceVerbose, "CollectionCodeDomSerializer::SerializeViaAdd");
Debug.Indent();
Debug.WriteLineIf(traceSerialization.TraceVerbose, "Collection: " + collection.GetType().Name);
Debug.WriteLineIf(traceSerialization.TraceVerbose, "Elements: " + collection.Count.ToString());
// Here we need to invoke Add once for each and every item in the collection. We can re-use the property
// reference and method reference, but we will need to recreate the invoke statement each time.
//
CodeStatementCollection statements = new CodeStatementCollection();
CodeMethodReferenceExpression methodRef = new CodeMethodReferenceExpression(propRef, addMethod.Name);
MethodInfo clearMethod = collection.GetType().GetMethod("Clear", new Type[0]);
if (clearMethod != null)
{
PropertyDescriptor clearProp = manager.Properties["ClearCollections"];
if (clearProp != null)
{
// insert code here to clear the collecion...
//
statements.Add(new CodeMethodInvokeExpression(propRef, "Clear"));
}
}
bool isTargetInherited = false;
InheritedPropertyDescriptor inheritedDesc = manager.Context[typeof(PropertyDescriptor)] as InheritedPropertyDescriptor;
if (inheritedDesc != null)
{
isTargetInherited = true;
collection = GetCollectionDelta(inheritedDesc.OriginalValue as ICollection, collection);
if (collection.Count == 0)
{
Debug.Unindent();
return(statements);
}
}
foreach (object o in collection)
{
// If this object is being privately inherited, it cannot be inside
// this collection.
//
bool genCode = !(o is IComponent);
if (!genCode)
{
InheritanceAttribute ia = (InheritanceAttribute)TypeDescriptor.GetAttributes(o)[typeof(InheritanceAttribute)];
if (ia != null)
{
if (ia.InheritanceLevel == InheritanceLevel.InheritedReadOnly)
{
genCode = false;
}
else if (ia.InheritanceLevel == InheritanceLevel.Inherited && isTargetInherited)
{
genCode = false;
}
else
{
genCode = true;
}
}
else
{
genCode = true;
}
}
if (genCode)
{
CodeMethodInvokeExpression statement = new CodeMethodInvokeExpression();
statement.Method = methodRef;
CodeValueExpression codeValue = new CodeValueExpression(null, o, parameter.ParameterType);
manager.Context.Push(codeValue);
CodeExpression serializedObj = null;
try {
serializedObj = SerializeToExpression(manager, o);
}
finally {
manager.Context.Pop();
}
if (serializedObj != null)
{
statement.Parameters.Add(serializedObj);
statements.Add(statement);
}
}
}
Debug.Unindent();
return(statements);
}
/// <include file='doc\CollectionCodeDomSerializer.uex' path='docs/doc[@for="CollectionCodeDomSerializer.SerializeArray"]/*' />
/// <devdoc>
/// Serializes the given array.
/// </devdoc>
private object SerializeArray(IDesignerSerializationManager manager, CodePropertyReferenceExpression propRef, Type asType, Array array, object targetObject)
{
object result = null;
Debug.WriteLineIf(traceSerialization.TraceVerbose, "CollectionCodeDomSerializer::SerializeArray");
Debug.Indent();
if (array.Rank != 1)
{
Debug.WriteLineIf(traceSerialization.TraceError, "*** Cannot serialize arrays with rank > 1. ***");
manager.ReportError(SR.GetString(SR.SerializerInvalidArrayRank, array.Rank.ToString()));
}
else
{
// For an array, we need an array create expression. First, get the array type
//
Type elementType = null;
if (asType != null)
{
elementType = asType;
}
else
{
elementType = array.GetType().GetElementType();
}
CodeTypeReference elementTypeRef = new CodeTypeReference(elementType);
Debug.WriteLineIf(traceSerialization.TraceVerbose, "Array type: " + elementType.Name);
Debug.WriteLineIf(traceSerialization.TraceVerbose, "Length:" + array.Length.ToString());
// Now create an ArrayCreateExpression, and fill its initializers.
//
CodeArrayCreateExpression arrayCreate = new CodeArrayCreateExpression();
arrayCreate.CreateType = elementTypeRef;
bool arrayOk = true;
ICollection collection = array;
bool isTargetInherited = false;
IComponent comp = targetObject as IComponent;
if (comp != null)
{
InheritanceAttribute ia = (InheritanceAttribute)TypeDescriptor.GetAttributes(comp)[typeof(InheritanceAttribute)];
isTargetInherited = (ia != null && ia.InheritanceLevel == InheritanceLevel.Inherited);
}
if (isTargetInherited)
{
InheritedPropertyDescriptor inheritedDesc = manager.Context[typeof(PropertyDescriptor)] as InheritedPropertyDescriptor;
if (inheritedDesc != null)
{
collection = GetCollectionDelta(inheritedDesc.OriginalValue as ICollection, array);
}
}
CodeValueExpression codeValue = new CodeValueExpression(null, collection, elementType);
manager.Context.Push(codeValue);
try {
foreach (object o in collection)
{
// If this object is being privately inherited, it cannot be inside
// this collection. Since we're writing an entire array here, we
// cannot write any of it.
//
if (o is IComponent && TypeDescriptor.GetAttributes(o).Contains(InheritanceAttribute.InheritedReadOnly))
{
arrayOk = false;
break;
}
object expression = SerializeToExpression(manager, o);
if (expression is CodeExpression)
{
arrayCreate.Initializers.Add((CodeExpression)expression);
}
else
{
arrayOk = false;
break;
}
}
}
finally {
manager.Context.Pop();
}
// if we weren't given a property, we're done. Otherwise, we must create an assign statement for
// the property.
//
if (arrayOk)
{
if (propRef != null)
{
result = new CodeAssignStatement(propRef, arrayCreate);
}
else
{
result = arrayCreate;
}
}
}
Debug.Unindent();
return(result);
}
/// <include file='doc\CollectionCodeDomSerializer.uex' path='docs/doc[@for="CollectionCodeDomSerializer.Serialize"]/*' />
/// <devdoc>
/// Serializes the given object into a CodeDom object.
/// </devdoc>
public override object Serialize(IDesignerSerializationManager manager, object value)
{
object result = null;
Debug.WriteLineIf(traceSerialization.TraceVerbose, "CollectionCodeDomSerializer::Serialize");
Debug.Indent();
// We serialize collections as follows:
//
// If the collection is an array, we write out the array.
//
// If the collection has a method called AddRange, we will
// call that, providing an array.
//
// If the colleciton has an Add method, we will call it
// repeatedly.
//
// If the collection is an IList, we will cast to IList
// and add to it.
//
// If the collection has no add method, but is marked
// with PersistContents, we will enumerate the collection
// and serialize each element.
// Check to see if there is a CodePropertyReferenceExpression on the stack. If there is,
// we can use it as a guide for serialization.
//
object context = manager.Context.Current;
if (context is CodeValueExpression)
{
CodeValueExpression valueEx = (CodeValueExpression)context;
if (valueEx.Value == value)
{
context = valueEx.Expression;
}
}
if (context is CodePropertyReferenceExpression)
{
Debug.WriteLineIf(traceSerialization.TraceVerbose, "Property reference encountered on context stack.");
// Only serialize if the value is a collection.
//
Debug.Assert(value is ICollection, "Collection serializer invoked for non-collection: " + (value == null ? "(null)" : value.GetType().Name));
if (value is ICollection)
{
CodePropertyReferenceExpression propRef = (CodePropertyReferenceExpression)context;
object targetObject = DeserializeExpression(manager, null, propRef.TargetObject);
Debug.WriteLineIf(traceSerialization.TraceWarning && targetObject == null, "WARNING: Failed to deserialize property reference target");
if (targetObject != null)
{
PropertyDescriptor prop = TypeDescriptor.GetProperties(targetObject)[propRef.PropertyName];
if (prop != null)
{
Type propertyType = prop.PropertyType;
if (typeof(Array).IsAssignableFrom(propertyType))
{
Debug.WriteLineIf(traceSerialization.TraceVerbose, "Collection is array");
result = SerializeArray(manager, propRef, propertyType.GetElementType(), (Array)value, targetObject);
}
else
{
Debug.WriteLineIf(traceSerialization.TraceVerbose, "Searching for AddRange or Add");
MethodInfo[] methods = propertyType.GetMethods(BindingFlags.Public | BindingFlags.Instance);
MethodInfo addRange = null;
MethodInfo add = null;
ParameterInfo[] parameters = null;
foreach (MethodInfo method in methods)
{
if (method.Name.Equals("AddRange"))
{
parameters = method.GetParameters();
if (parameters.Length == 1 && parameters[0].ParameterType.IsArray)
{
addRange = method;
if (PreferAddRange)
{
break;
}
}
}
if (method.Name.Equals("Add"))
{
parameters = method.GetParameters();
if (parameters.Length == 1)
{
add = method;
if (!PreferAddRange)
{
break;
}
}
}
}
if (!PreferAddRange && addRange != null && add != null)
{
addRange = null;
}
if (addRange != null)
{
result = SerializeViaAddRange(manager, propRef, (ICollection)value, addRange, parameters[0], targetObject);
}
else if (add != null)
{
result = SerializeViaAdd(manager, propRef, (ICollection)value, add, parameters[0], targetObject);
}
}
}
}
}
}
else
{
Debug.WriteLineIf(traceSerialization.TraceVerbose, "No property reference encountered on context stack, serializing as array expression.");
if (value is Array)
{
result = SerializeArray(manager, null, null, (Array)value, null);
}
}
Debug.Unindent();
return(result);
}
