private static void DeserializeIntoVariableMayBeObject(this CodeWriter writer,
JsonSerialization serialization,
Action <CodeWriter, CodeWriterDelegate> valueCallback,
CodeWriterDelegate element,
Dictionary <ObjectTypeProperty, CodeWriterDeclaration>?propertyVariables = null)
{
if (serialization is JsonObjectSerialization obj)
{
var itemVariable = new CodeWriterDeclaration("property");
if (propertyVariables == null)
{
// this is the first level of object hierarchy
// collect all properties and initialize the dictionary
propertyVariables = new Dictionary <ObjectTypeProperty, CodeWriterDeclaration>();
CollectProperties(propertyVariables, obj);
foreach (var variable in propertyVariables)
{
var objectTypeProperty = variable.Key;
writer.Line($"{objectTypeProperty.Declaration.Type} {variable.Value:D} = default;");
}
}
var dictionaryVariable = new CodeWriterDeclaration("additionalPropertiesDictionary");
var objAdditionalProperties = obj.AdditionalProperties;
if (objAdditionalProperties != null)
{
writer.Line($"{objAdditionalProperties.Type} {dictionaryVariable:D} = default;");
}
using (writer.Scope($"foreach (var {itemVariable:D} in {element}.EnumerateObject())"))
{
foreach (JsonPropertySerialization property in obj.Properties)
{
CSharpType?type = property.Property?.Declaration.Type;
bool hasNullableType = type != null && type.IsNullable;
void WriteNullCheck()
{
using (writer.Scope($"if ({itemVariable.ActualName}.Value.ValueKind == {typeof(JsonValueKind)}.Null)"))
{
writer.Append($"continue;");
}
}
writer.Append($"if({itemVariable.ActualName}.NameEquals({property.Name:L}))");
using (writer.Scope())
{
if (hasNullableType)
{
WriteNullCheck();
}
if (property.Property != null)
{
// Reading a property value
writer.DeserializeIntoVariable(
property.ValueSerialization,
(w, v) => w.Line($"{propertyVariables[property.Property]} = {v};"),
w => w.Append($"{itemVariable.ActualName}.Value"));
}
else
{
// Reading a nested object
writer.DeserializeIntoVariableMayBeObject(
property.ValueSerialization,
(w, v) => { },
w => w.Append($"{itemVariable.ActualName}.Value"),
propertyVariables);
}
writer.Line($"continue;");
}
}
if (objAdditionalProperties != null)
{
writer.Line($"{dictionaryVariable} ??= new {objAdditionalProperties.Type}();");
writer.DeserializeValue(
objAdditionalProperties.ValueSerialization,
w => w.Append($"{itemVariable}.Value"),
(w, v) => w.Line($"{dictionaryVariable}.Add({itemVariable}.Name, {v});"));
}
}
if (objAdditionalProperties != null)
{
writer.Line($"{propertyVariables[objAdditionalProperties.Property]} = {dictionaryVariable};");
}
if (obj.Type != null)
{
var initializers = new List <ObjectPropertyInitializer>();
foreach (var variable in propertyVariables)
{
var property = variable.Key;
initializers.Add(new ObjectPropertyInitializer(
property,
new Reference(variable.Value.ActualName, property.Declaration.Type)));
}
valueCallback(writer,
w => w.WriteInitialization((ObjectType)obj.Type.Implementation, initializers));
}
}
else
{
writer.DeserializeIntoVariableWithNullHandling(serialization, valueCallback, element);
}
}