protected override void InitializeConstructorArgumentCaches(ref ReadStack state, JsonSerializerOptions options)
{
JsonTypeInfo typeInfo = state.Current.JsonTypeInfo;
if (typeInfo.CreateObjectWithArgs == null)
{
typeInfo.CreateObjectWithArgs =
options.MemberAccessorStrategy.CreateParameterizedConstructor <T, TArg0, TArg1, TArg2, TArg3>(ConstructorInfo !);
}
var arguments = new Arguments <TArg0, TArg1, TArg2, TArg3>();
List <KeyValuePair <string, JsonParameterInfo> > cache = typeInfo.ParameterCache !.List;
for (int i = 0; i < typeInfo.ParameterCount; i++)
{
JsonParameterInfo parameterInfo = cache[i].Value;
// We can afford not to set default values for ctor arguments when we should't deserialize because the
// type parameters of the `Arguments` type provide default semantics that work well with value types.
if (parameterInfo.ShouldDeserialize)
{
int position = parameterInfo.ClrInfo.Position;
switch (position)
{
case 0:
arguments.Arg0 = ((JsonParameterInfo <TArg0>)parameterInfo).TypedDefaultValue !;
break;
case 1:
arguments.Arg1 = ((JsonParameterInfo <TArg1>)parameterInfo).TypedDefaultValue !;
break;
case 2:
arguments.Arg2 = ((JsonParameterInfo <TArg2>)parameterInfo).TypedDefaultValue !;
break;
case 3:
arguments.Arg3 = ((JsonParameterInfo <TArg3>)parameterInfo).TypedDefaultValue !;
break;
default:
Debug.Fail("More than 4 params: we should be in override for LargeObjectWithParameterizedConstructorConverter.");
throw new InvalidOperationException();
}
}
}
state.Current.CtorArgumentState !.Arguments = arguments;
}
private static bool TryRead <TArg>(
ref ReadStack state,
ref Utf8JsonReader reader,
JsonParameterInfo jsonParameterInfo,
out TArg arg)
{
Debug.Assert(jsonParameterInfo.ShouldDeserialize);
Debug.Assert(jsonParameterInfo.Options != null);
var info = (JsonParameterInfo <TArg>)jsonParameterInfo;
var converter = (JsonConverter <TArg>)jsonParameterInfo.ConverterBase;
bool success = converter.TryRead(ref reader, info.PropertyType, info.Options !, ref state, out TArg? value);
arg = value == null && jsonParameterInfo.IgnoreDefaultValuesOnRead
? (TArg?)info.DefaultValue ! // Use default value specified on parameter, if any.
: value !;
return(success);
}
protected sealed override bool ReadAndCacheConstructorArgument(ref ReadStack state, ref Utf8JsonReader reader, JsonParameterInfo jsonParameterInfo)
{
Debug.Assert(jsonParameterInfo.ShouldDeserialize);
Debug.Assert(jsonParameterInfo.Options != null);
bool success = jsonParameterInfo.ConverterBase.TryReadAsObject(ref reader, jsonParameterInfo.Options !, ref state, out object?arg);
if (success && !(arg == null && jsonParameterInfo.IgnoreDefaultValuesOnRead))
{
((object[])state.Current.CtorArgumentState !.Arguments)[jsonParameterInfo.ClrInfo.Position] = arg !;
protected override bool ReadAndCacheConstructorArgument(ref ReadStack state, ref Utf8JsonReader reader, JsonParameterInfo jsonParameterInfo)
{
Debug.Assert(state.Current.CtorArgumentState !.Arguments != null);
var arguments = (Arguments <TArg0, TArg1, TArg2, TArg3>)state.Current.CtorArgumentState.Arguments;
bool success;
switch (jsonParameterInfo.Position)
{
case 0:
success = ((JsonParameterInfo <TArg0>)jsonParameterInfo).ReadJsonTyped(ref state, ref reader, out TArg0 arg0);
if (success)
{
arguments.Arg0 = arg0;
}
break;
case 1:
success = ((JsonParameterInfo <TArg1>)jsonParameterInfo).ReadJsonTyped(ref state, ref reader, out TArg1 arg1);
if (success)
{
arguments.Arg1 = arg1;
}
break;
case 2:
success = ((JsonParameterInfo <TArg2>)jsonParameterInfo).ReadJsonTyped(ref state, ref reader, out TArg2 arg2);
if (success)
{
arguments.Arg2 = arg2;
}
break;
case 3:
success = ((JsonParameterInfo <TArg3>)jsonParameterInfo).ReadJsonTyped(ref state, ref reader, out TArg3 arg3);
if (success)
{
arguments.Arg3 = arg3;
}
break;
default:
Debug.Fail("This should never happen.");
throw new InvalidOperationException();
}
return(success);
}
protected override bool ReadAndCacheConstructorArgument(ref ReadStack state, ref Utf8JsonReader reader, JsonParameterInfo jsonParameterInfo)
{
bool success = jsonParameterInfo.ReadJson(ref state, ref reader, out object?arg0);
if (success)
{
((object[])state.Current.CtorArgumentState !.Arguments !)[jsonParameterInfo.Position] = arg0 !;
public ParameterRef(ulong key, JsonParameterInfo info)
{
Key = key;
Info = info;
}
public ParameterRef(ulong key, JsonParameterInfo info, byte[] nameFromJson)
{
Key = key;
Info = info;
NameFromJson = nameFromJson;
}
