// Read the actual parameter info, i.e. the type of the paramter and its value.
// The first element could be a V or an SO.
private static void ReadParamInfo(XamlReader reader, XamlType type, NamespaceTable namespaceTable, string rootNamespace, AttributeParameterData paramInfo)
{
reader.Read();
bool readNext = false;
do
{
readNext = false;
if (reader.NodeType == XamlNodeType.StartObject && reader.Type == XamlLanguage.Array)
{
paramInfo.IsArray = true;
XamlReader xamlArrayReader = reader.ReadSubtree();
xamlArrayReader.Read();
while (readNext || xamlArrayReader.Read())
{
readNext = false;
if (xamlArrayReader.NodeType == XamlNodeType.StartMember && xamlArrayReader.Member.Name == "Type")
{
xamlArrayReader.Read();
if (xamlArrayReader.NodeType == XamlNodeType.Value)
{
XamlType arrayType = XamlBuildTaskServices.GetXamlTypeFromString(xamlArrayReader.Value as string, namespaceTable, xamlArrayReader.SchemaContext);
if (arrayType.UnderlyingType != null)
{
paramInfo.Type = xamlArrayReader.SchemaContext.GetXamlType(arrayType.UnderlyingType.MakeArrayType());
}
else
{
throw FxTrace.Exception.AsError(new InvalidOperationException(SR.AttributeParameterTypeUnknown(arrayType)));
}
}
}
else if (xamlArrayReader.NodeType == XamlNodeType.StartObject)
{
AttributeParameterData arrayEntry = new AttributeParameterData();
ReadParamInfo(xamlArrayReader.ReadSubtree(), null, namespaceTable, rootNamespace, arrayEntry);
paramInfo.AddArrayContentsEntry(arrayEntry);
readNext = true;
}
}
}
else if (reader.NodeType == XamlNodeType.StartObject || reader.NodeType == XamlNodeType.Value)
{
paramInfo.IsArray = false;
string paramVal;
object paramObj = null;
XamlType paramType;
GetParamValueType(reader.ReadSubtree(), type, namespaceTable, rootNamespace, out paramVal, out paramType, out paramObj);
paramInfo.TextValue = paramVal;
paramInfo.Type = paramType;
paramInfo.Value = paramObj;
}
} while (readNext || reader.Read());
}
internal void AddArrayContentsEntry(AttributeParameterData arrayContentsEntry)
{
if (arrayContentsEntry != null)
{
if (this.arrayContents == null)
{
this.arrayContents = new List <AttributeParameterData>();
}
this.arrayContents.Add(arrayContentsEntry);
}
}
// Read the Property on the attribute.
private static KeyValuePair <string, AttributeParameterData> ReadAttributeProperty(XamlReader reader, NamespaceTable namespaceTable, string rootNamespace)
{
reader.Read();
Fx.Assert(reader.Member != null, "Member element should not be null");
XamlMember member = reader.Member;
AttributeParameterData propertyInfo = new AttributeParameterData();
if (member.Type != null && !member.Type.IsUnknown)
{
propertyInfo.Type = member.Type;
}
ReadParamInfo(reader, member.Type, namespaceTable, rootNamespace, propertyInfo);
return(new KeyValuePair <string, AttributeParameterData>(member.Name, propertyInfo));
}
// Read the parameters on the Attribute. We expect the parameters to be in the order in which they are supposed to appear in the output code.
// Here we are inside x:Arguments and we expect a list of parameters.
private static IList <AttributeParameterData> ReadParameters(XamlReader reader, NamespaceTable namespaceTable, string rootNamespace)
{
IList <AttributeParameterData> parameters = new List <AttributeParameterData>();
bool readNext = false;
while (readNext || reader.Read())
{
readNext = false;
if (reader.NodeType == XamlNodeType.StartObject)
{
AttributeParameterData paramInfo = new AttributeParameterData();
ReadParamInfo(reader.ReadSubtree(), null, namespaceTable, rootNamespace, paramInfo);
parameters.Add(paramInfo);
readNext = true;
}
}
return(parameters);
}
CodeExpression GetCodeExpressionForAttributeArgument(AttributeData attrib, AttributeParameterData paramInfo, ClassData classData)
{
CodeExpression codeExp;
if (paramInfo.IsArray)
{
CodeExpression[] codeInitializationArray;
if (paramInfo.ArrayContents != null && paramInfo.ArrayContents.Count > 0)
{
codeInitializationArray = new CodeExpression[paramInfo.ArrayContents.Count];
for (int i = 0; i < paramInfo.ArrayContents.Count; i++)
{
codeInitializationArray[i] = GetCodeExpressionForAttributeArgument(/* attrib = */ null, paramInfo.ArrayContents[i], classData);
}
codeExp = new CodeArrayCreateExpression(paramInfo.Type.UnderlyingType.GetElementType(), codeInitializationArray);
}
else
{
codeExp = new CodeArrayCreateExpression(paramInfo.Type.UnderlyingType.GetElementType());
}
}
else
{
if (attrib != null && language.Equals("VB") && string.Equals(attrib.Type.UnderlyingType.FullName, typeof(DefaultValueAttribute).FullName) && paramInfo.Type == null)
{
//
// This is a special case for VB DefaultValueAttribute because by default the VB compiler does not compile the following code:
//
// < System.ComponentModel.DefaultValueAttribute(Nothing) >
//
// VB compiler complained that code has multiple interpretation because DefaultValueAttribute has multiple constructors that accept null.
//
// The solution here is to just pick the one that take in an object as a parameter. Internally, all these constructor will simply set
// an internal field named value to null and therefore picking which one does not matter anyway.
//
codeExp = new CodeCastExpression { TargetType = new CodeTypeReference(typeof(object)), Expression = new CodePrimitiveExpression(null) };
}
else if (paramInfo.TextValue == null)
{
codeExp = new CodePrimitiveExpression(null);
}
else if (typeof(System.Type).IsAssignableFrom(paramInfo.Type.UnderlyingType))
{
codeExp = new CodeTypeOfExpression(paramInfo.TextValue);
}
else if (paramInfo.Type.UnderlyingType == typeof(String))
{
codeExp = new CodePrimitiveExpression(paramInfo.TextValue);
}
else if (paramInfo.Type.UnderlyingType == typeof(bool))
{
if (paramInfo.TextValue == "true")
{
codeExp = new CodePrimitiveExpression(true);
}
else
{
codeExp = new CodePrimitiveExpression(false);
}
}
else
{
codeExp = new CodeSnippetExpression(paramInfo.TextValue);
}
}
return codeExp;
}
// Read the Property on the attribute.
private static KeyValuePair<string, AttributeParameterData> ReadAttributeProperty(XamlReader reader, NamespaceTable namespaceTable, string rootNamespace)
{
reader.Read();
Fx.Assert(reader.Member != null, "Member element should not be null");
XamlMember member = reader.Member;
AttributeParameterData propertyInfo = new AttributeParameterData();
if (member.Type != null && !member.Type.IsUnknown)
{
propertyInfo.Type = member.Type;
}
ReadParamInfo(reader, member.Type, namespaceTable, rootNamespace, propertyInfo);
return new KeyValuePair<string, AttributeParameterData>(member.Name, propertyInfo);
}
// Read the actual parameter info, i.e. the type of the paramter and its value.
// The first element could be a V or an SO.
private static void ReadParamInfo(XamlReader reader, XamlType type, NamespaceTable namespaceTable, string rootNamespace, AttributeParameterData paramInfo)
{
reader.Read();
bool readNext = false;
do
{
readNext = false;
if (reader.NodeType == XamlNodeType.StartObject && reader.Type == XamlLanguage.Array)
{
paramInfo.IsArray = true;
XamlReader xamlArrayReader = reader.ReadSubtree();
xamlArrayReader.Read();
while (readNext || xamlArrayReader.Read())
{
readNext = false;
if (xamlArrayReader.NodeType == XamlNodeType.StartMember && xamlArrayReader.Member.Name == "Type")
{
xamlArrayReader.Read();
if (xamlArrayReader.NodeType == XamlNodeType.Value)
{
XamlType arrayType = XamlBuildTaskServices.GetXamlTypeFromString(xamlArrayReader.Value as string, namespaceTable, xamlArrayReader.SchemaContext);
if (arrayType.UnderlyingType != null)
{
paramInfo.Type = xamlArrayReader.SchemaContext.GetXamlType(arrayType.UnderlyingType.MakeArrayType());
}
else
{
throw FxTrace.Exception.AsError(new InvalidOperationException(SR.AttributeParameterTypeUnknown(arrayType)));
}
}
}
else if (xamlArrayReader.NodeType == XamlNodeType.StartObject)
{
AttributeParameterData arrayEntry = new AttributeParameterData();
ReadParamInfo(xamlArrayReader.ReadSubtree(), null, namespaceTable, rootNamespace, arrayEntry);
paramInfo.AddArrayContentsEntry(arrayEntry);
readNext = true;
}
}
}
else if (reader.NodeType == XamlNodeType.StartObject || reader.NodeType == XamlNodeType.Value)
{
paramInfo.IsArray = false;
string paramVal;
object paramObj = null;
XamlType paramType;
GetParamValueType(reader.ReadSubtree(), type, namespaceTable, rootNamespace, out paramVal, out paramType, out paramObj);
paramInfo.TextValue = paramVal;
paramInfo.Type = paramType;
paramInfo.Value = paramObj;
}
} while (readNext || reader.Read());
}
// Read the parameters on the Attribute. We expect the parameters to be in the order in which they are supposed to appear in the output code.
// Here we are inside x:Arguments and we expect a list of parameters.
private static IList<AttributeParameterData> ReadParameters(XamlReader reader, NamespaceTable namespaceTable, string rootNamespace)
{
IList<AttributeParameterData> parameters = new List<AttributeParameterData>();
bool readNext = false;
while (readNext || reader.Read())
{
readNext = false;
if (reader.NodeType == XamlNodeType.StartObject)
{
AttributeParameterData paramInfo = new AttributeParameterData();
ReadParamInfo(reader.ReadSubtree(), null, namespaceTable, rootNamespace, paramInfo);
parameters.Add(paramInfo);
readNext = true;
}
}
return parameters;
}
internal void AddArrayContentsEntry(AttributeParameterData arrayContentsEntry)
{
if (arrayContentsEntry != null)
{
if (this.arrayContents == null)
{
this.arrayContents = new List<AttributeParameterData>();
}
this.arrayContents.Add(arrayContentsEntry);
}
}