private DzJsonNode BuildDzTree(ITypeSymbol symbol, string csObj)
{
if (symbol.Kind != SymbolKind.NamedType)
{
return(null);
}
// primitive types
switch (symbol.SpecialType)
{
case SpecialType.System_Int32:
_deserializeIntRequired = true;
return(new DzCallNode("DeserializeInt(ref content, ref json)"));
case SpecialType.System_String:
_deserializeStringRequired = true;
return(new DzCallNode("DeserializeString(ref content, ref json)"));
default:
break;
}
// if is serializable class
string invocationTypeStr = symbol.ToString();
SerializableClass foundClass = _knownClasses.FirstOrDefault(c => c.Type.ToString().Equals(invocationTypeStr));
if (foundClass != null)
{
if (!_requiredTypeDeserializers.ContainsKey(invocationTypeStr))
{
DzObjectNode objectNode = new DzObjectNode(invocationTypeStr);
foreach (SerializableProperty sp in foundClass.Properties)
{
DzJsonNode value = BuildDzTree(sp.Type, $"obj.{sp.Name}");
if (value is DzExpressionNode expr)
{
DzAssignmentNode assignment = new DzAssignmentNode($"obj.{sp.Name}", expr);
objectNode.Properties.Add((sp.Name, assignment));
}
else
{
throw new Exception("Expected expression for object property assignment!");
}
}
_requiredTypeDeserializers.Add(invocationTypeStr, objectNode);
}
string validName = invocationTypeStr.Replace(".", "_");
return(new DzCallNode($"Deserialize_{validName}(ref content, ref json)"));
}
// list, dictionnary, ...
// fallback on list
INamedTypeSymbol enumerable = null;
if (symbol.MetadataName.Equals("IList`1"))
{
enumerable = symbol as INamedTypeSymbol;
}
else
{
enumerable = symbol.AllInterfaces.FirstOrDefault(i => i.MetadataName.Equals("IList`1"));
}
if (enumerable != null)
{
ITypeSymbol listType = enumerable.TypeArguments.First();
DzListNode listNode = new DzListNode(listType.ToString());
DzJsonNode value = BuildDzTree(listType, $"obj");
if (value is DzExpressionNode expr)
{
listNode.Property = new DzAppendListNode($"obj", expr);
}
else
{
throw new Exception("Expected expression for object list append!");
}
_requiredTypeDeserializers.Add(invocationTypeStr, listNode);
string objectTypeStrValid = listNode.Type.Replace(".", "_").Replace("<", "_").Replace(">", "");
return(new DzCallNode($"DeserializeList_{objectTypeStrValid}(ref content, ref json)"));
}
// fallback on enumerables?
// If reached here, type isn't supported
_context.ReportDiagnostic(Diagnostic.Create(DiagnosticDescriptors.ClassNotSerializable, symbol.Locations.First(), invocationTypeStr));
return(null);
}
private JsonNode BuildTree(ITypeSymbol symbol, string csObj)
{
if (symbol.Kind != SymbolKind.NamedType)
{
return(null);
}
// primitive types
switch (symbol.SpecialType)
{
case SpecialType.System_Int32:
return(new NumericNode(csObj));
case SpecialType.System_String:
return(new StringNode(csObj));
default:
break;
}
// if is serializable class
string invocationTypeStr = symbol.ToString();
SerializableClass foundClass = _knownClasses.FirstOrDefault(c => c.Type.ToString().Equals(invocationTypeStr));
if (foundClass != null)
{
ObjectNode objectNode = new ObjectNode(csObj);
objectNode.CanBeNull = foundClass.CanBeNull;
foreach (SerializableProperty sp in foundClass.Properties)
{
JsonNode value = BuildTree(sp.Type, $"{csObj}.{sp.Name}");
if (value is NullableNode nn)
{
nn.CanBeNull = sp.CanBeNull;
}
if (value is ListNode ln && ln.ElementType is NullableNode lnn)
{
lnn.CanBeNull = lnn.CanBeNull && sp.ArrayItemCanBeNull;
}
objectNode.Properties.Add((sp.Name, value));
}
return(objectNode);
}
// list, dictionnary, ...
// fallback on list
INamedTypeSymbol enumerable = null;
if (symbol.MetadataName.Equals("IList`1"))
{
enumerable = symbol as INamedTypeSymbol;
}
else
{
enumerable = symbol.AllInterfaces.FirstOrDefault(i => i.MetadataName.Equals("IList`1"));
}
if (enumerable != null)
{
ITypeSymbol listType = enumerable.TypeArguments.First();
ListNode listNode = new ListNode(csObj);
listNode.ElementType = BuildTree(listType, $"{csObj}[i]");
return(listNode);
}
// fallback on enumerables?
// If reached here, type isn't supported
_context.ReportDiagnostic(Diagnostic.Create(DiagnosticDescriptors.ClassNotSerializable, symbol.Locations.First(), invocationTypeStr));
return(null);
}
private void VisitClassOrStructDeclaration(TypeDeclarationSyntax node)
{
bool isSerializable = false;
// Start by a quick check
foreach (AttributeListSyntax attrList in node.AttributeLists)
{
foreach (AttributeSyntax attr in attrList.Attributes)
{
string name = attr.Name.ToString();
if (name.Contains("Serialize"))
{
isSerializable = true;
break;
}
}
if (isSerializable)
{
break;
}
}
if (!isSerializable)
{
return;
}
INamedTypeSymbol type = _semanticModel.GetDeclaredSymbol(node);
// Can't do Proper check if we generate the attribute
//isSerializable = type.GetAttributes().Any(a => a.AttributeClass.ToString().Equals("MetaJson.SerializeAttribute"));
//if (!isSerializable)
//{
// base.VisitClassDeclaration(node);
// return;
//}
SerializableClass sc = new SerializableClass()
{
Name = node.Identifier.ValueText,
Declaration = node,
Type = type,
CanBeNull = !type.IsValueType && !type.GetAttributes().Any(a => a.AttributeClass.ToString().Contains("NotNull"))
};
ImmutableArray <ISymbol> members = type.GetMembers();
foreach (ISymbol serializableProperty in type.GetMembers())
{
// serializableProperty.DeclaringSyntaxReferences.FirstOrDefault()?.GetSyntax() as PropertyDeclarationSyntax,
ITypeSymbol typeSymbol = null;
if (serializableProperty is IPropertySymbol ps)
{
typeSymbol = ps.Type;
}
else if (serializableProperty is IFieldSymbol fs)
{
typeSymbol = fs.Type;
}
else
{
continue;
}
ImmutableArray <AttributeData> attributes = serializableProperty.GetAttributes();
if (!attributes.Any(a => a.AttributeClass.ToString().Contains("Serialize")))
{
continue;
}
SerializableProperty sp = new SerializableProperty()
{
Name = serializableProperty.Name,
Type = typeSymbol,
CanBeNull = !typeSymbol.IsValueType && !attributes.Any(a => a.AttributeClass.ToString().Contains("NotNull")),
ArrayItemCanBeNull = !attributes.Any(a => a.AttributeClass.ToString().Contains("ArrayItemNotNull"))
};
sc.Properties.Add(sp);
}
SerializableClasses.Add(sc);
}
