CodeAttributeArgument[] GetDefaultValueArguments(PrimitiveMapping mapping, object value, out CodeExpression initExpression) {
initExpression = null;
if (value == null) return null;
CodeExpression valueExpression = null;
CodeExpression typeofValue = null;
Type type = value.GetType();
CodeAttributeArgument[] arguments = null;
if (mapping is EnumMapping) {
#if DEBUG
// use exception in the place of Debug.Assert to avoid throwing asserts from a server process such as aspnet_ewp.exe
if (value.GetType() != typeof(string)) throw new InvalidOperationException(Res.GetString(Res.XmlInternalErrorDetails, "Invalid enumeration type " + value.GetType().Name));
#endif
if (((EnumMapping)mapping).IsFlags) {
string[] values = ((string)value).Split(null);
for (int i = 0; i < values.Length; i++) {
if (values[i].Length == 0) continue;
CodeExpression enumRef = new CodeFieldReferenceExpression(new CodeTypeReferenceExpression(mapping.TypeDesc.FullName), values[i]);
if (valueExpression != null)
valueExpression = new CodeBinaryOperatorExpression(valueExpression, CodeBinaryOperatorType.BitwiseOr, enumRef);
else
valueExpression = enumRef;
}
}
else {
valueExpression = new CodeFieldReferenceExpression(new CodeTypeReferenceExpression(mapping.TypeDesc.FullName), (string)value);
}
initExpression = valueExpression;
arguments = new CodeAttributeArgument[] {new CodeAttributeArgument(valueExpression)};
}
else if (type == typeof(bool) ||
type == typeof(Int32) ||
type == typeof(string) ||
type == typeof(double)) {
initExpression = valueExpression = new CodePrimitiveExpression(value);
arguments = new CodeAttributeArgument[] {new CodeAttributeArgument(valueExpression)};
}
else if (type == typeof(Int16) ||
type == typeof(Int64) ||
type == typeof(float) ||
type == typeof(byte) ||
type == typeof(decimal)) {
valueExpression = new CodePrimitiveExpression(Convert.ToString(value, NumberFormatInfo.InvariantInfo));
typeofValue = new CodeTypeOfExpression(type.FullName);
arguments = new CodeAttributeArgument[] {new CodeAttributeArgument(typeofValue), new CodeAttributeArgument(valueExpression)};
initExpression = new CodeCastExpression(type.FullName, new CodePrimitiveExpression(value));
}
else if (type == typeof(sbyte) ||
type == typeof(UInt16) ||
type == typeof(UInt32) ||
type == typeof(UInt64)) {
// need to promote the non-CLS complient types
value = PromoteType(type, value);
valueExpression = new CodePrimitiveExpression(Convert.ToString(value, NumberFormatInfo.InvariantInfo));
typeofValue = new CodeTypeOfExpression(type.FullName);
arguments = new CodeAttributeArgument[] {new CodeAttributeArgument(typeofValue), new CodeAttributeArgument(valueExpression)};
initExpression = new CodeCastExpression(type.FullName, new CodePrimitiveExpression(value));
}
else if (type == typeof(DateTime)) {
DateTime dt = (DateTime)value;
string dtString;
long ticks;
if (mapping.TypeDesc.FormatterName == "Date") {
dtString = XmlCustomFormatter.FromDate(dt);
ticks = (new DateTime(dt.Year, dt.Month, dt.Day)).Ticks;
}
else if (mapping.TypeDesc.FormatterName == "Time") {
dtString = XmlCustomFormatter.FromDateTime(dt);
ticks = dt.Ticks;
}
else {
dtString = XmlCustomFormatter.FromDateTime(dt);
ticks = dt.Ticks;
}
valueExpression = new CodePrimitiveExpression(dtString);
typeofValue = new CodeTypeOfExpression(type.FullName);
arguments = new CodeAttributeArgument[] {new CodeAttributeArgument(typeofValue), new CodeAttributeArgument(valueExpression)};
initExpression = new CodeObjectCreateExpression(new CodeTypeReference(typeof(DateTime)), new CodeExpression[] {new CodePrimitiveExpression(ticks)});
}
else if (type == typeof(Guid)) {
valueExpression = new CodePrimitiveExpression(Convert.ToString(value, NumberFormatInfo.InvariantInfo));
typeofValue = new CodeTypeOfExpression(type.FullName);
arguments = new CodeAttributeArgument[] {new CodeAttributeArgument(typeofValue), new CodeAttributeArgument(valueExpression)};
initExpression = new CodeObjectCreateExpression(new CodeTypeReference(typeof(Guid)), new CodeExpression[] {valueExpression});
}
if (mapping.TypeDesc.FullName != type.ToString() && !(mapping is EnumMapping)) {
// generate cast
initExpression = new CodeCastExpression(mapping.TypeDesc.FullName, initExpression);
}
return arguments;
}
