private string GenerateReadBoolean(JensonPropertyInfo p)
{
var w = new SourceWriter();
w.Line($"if (reader.TokenType == JsonTokenType.True) {p.Name} = true;");
w.Line($"else if (reader.TokenType == JsonTokenType.False) {p.Name} = false;");
w.Line("else throw new JsonException(\"Boolean property must have true or false value.\");");
return(w.ToString());
}
private static JensonPropertyInfo MergePropertyInfo(JensonPropertyInfo baseProp, JensonPropertyInfo overwrite)
=> new JensonPropertyInfo(
baseProp.Name,
overwrite.JsonName ?? baseProp.Name,
overwrite.TypeName,
overwrite.IsReadOnly,
overwrite.ShouldSerialize && baseProp.ShouldSerialize, // TODO handle JsonInclude
overwrite.ShouldDeserialize && baseProp.ShouldDeserialize,
baseProp.CanBeNull,
overwrite.Order ?? baseProp.Order,
overwrite.ShouldSerializeFunction ?? baseProp.ShouldSerializeFunction);
private string GenerateReadArray(JensonPropertyInfo p)
{
var w = new SourceWriter();
w.Line("if (reader.TokenType != JsonTokenType.StartArray) throw new JsonException();");
w.Line();
w.Line($"{p.Name} = JsonSerializer.Deserialize<{p.TypeName}>(ref reader);");
return(w.ToString());
w.Line("var restore = reader;");
w.Line("var length = 0;");
w.Line();
w.Line("while (reader.Read() && reader.TokenType != JsonTokenType.EndArray)");
w.Line("{");
w.Indent();
w.Line("if (reader.TokenType != JsonTokenType.Comment) length++;");
w.Line("reader.Skip();");
w.Dedent();
w.Line("}");
w.Line();
w.Line("reader = restore;");
w.Line($"{p.Name} = new {p.TypeName.Substring(0, p.TypeName.Length - 2)}[length];");
var itemType = p.ArrayItemType;
if (itemType.EndsWith("[]"))
{
throw new NotImplementedException("Nested arrays are not implemented.");
}
//var attribList = new List<OpAttribute>();
//while (reader.Read())
//{
// if (reader.TokenType == JsonTokenType.EndArray)
// {
// attributes = attribList.ToArray();
// break;
// }
return(w.ToString());
}
private string GenerateWriteArray(JensonPropertyInfo p)
{
return($"JsonSerializer.Serialize(writer, value.{p.Name}, options);");
//var w = new SourceWriter();
//w.Line("writer.WriteStartArray();");
//w.Line();
//w.Line($"foreach (var item in value.{p.Name})");
//w.Line("{");
//w.Indent();
//var writeValueString = p switch
//{
// _ when p.IsArray => "throw new NotImplementedException(\"array\");",
// _ when p.IsString ||
// p.IsBoolean ||
// p.IsDateTime ||
// p.IsDateTimeOffset ||
// p.IsGuid => $"writer.WriteString(_{p.Name}Name, value.{p.Name});",
// _ when p.IsByte ||
// p.IsDecimal ||
// p.IsDouble ||
// p.IsInt16 ||
// p.IsInt32 ||
// p.IsInt64 ||
// p.IsSByte ||
// p.IsSingle ||
// p.IsUInt16 ||
// p.IsUInt32 ||
// p.IsUInt64 => $"writer.WriteNumber(_{p.Name}Name, value.{p.Name});",
// _ => $"JsonSerializer.Serialize(writer, value.{p.Name}, options);"
//};
//w.Dedent();
//w.Line("}");
//w.Line();
//w.Line("writer.WriteEndArray();");
//return w.ToString();
}
private void WriteTypeDiscriminatorConverterBody(SourceWriter w, string baseType, JensonPropertyInfo p, string discrFun)
{
w.Line($"public override {baseType} Read(ref Utf8JsonReader reader, Type typeToConvert, JsonSerializerOptions options)");
w.Line("{");
w.Indent();
w.Line("var discrReader = reader;");
w.Line($"var discriminatorName = Encoding.UTF8.GetBytes(\"{p.Name}\");");
w.Line();
w.Line("if (discrReader.TokenType != JsonTokenType.StartObject) throw new JsonException(\"Expected start of object.\");");
w.Line();
w.Line("while (discrReader.Read())");
w.Line("{");
w.Indent();
w.Line("if (discrReader.ValueTextEquals(discriminatorName))");
w.Line("{");
w.Indent();
w.Line("if (!discrReader.Read()) throw new JsonException();");
// TODO proper deserialization of value
w.Line($"var value = JsonSerializer.Deserialize<{p.TypeName}>(ref discrReader);");
w.Line($"var realType = {baseType}.{discrFun}(value);");
w.Line($"return ({baseType}) JsonSerializer.Deserialize(ref reader, realType, options);");
w.Dedent();
w.Line("}");
w.Line();
w.Line("discrReader.Skip();");
w.Dedent();
w.Line("}");
w.Line();
w.Line("throw new JsonException(\"Missing type discriminator.\");");
w.Dedent();
w.Line("}");
w.Line();
w.Line($"public override void Write(Utf8JsonWriter writer, {baseType} value, JsonSerializerOptions options)");
w.Line("{");
w.Indent();
w.Line("throw new NotImplementedException(\"A converter for subclasses must always be used for writing.\");");
w.Dedent();
w.Line("}");
}
