IDictionaryOfTKeyTValueConverter<TDictionary, TKey, TValue>
using System.
Collections.
Generic;
using System.
Runtime.
CompilerServices;
using System.
Runtime.
InteropServices;
using System.
Text.
Json.
Serialization.
Metadata;
namespace System.
Text.
Json.
Serialization.
Converters
{
internal sealed class IDictionaryOfTKeyTValueConverter<
TDictionary,
TKey,
TValue> :
DictionaryDefaultConverter<
TDictionary,
TKey,
TValue>
where TDictionary :
IDictionary<
TKey,
TValue>
{
internal override bool CanPopulate =>
true;
protected override void Add(
TKey key, [
In] [
System.
Runtime.
CompilerServices.
IsReadOnly]
TValue value,
JsonSerializerOptions options,
ref ReadStack state)
{
TDictionary val = (
TDictionary)
state.
Current.
ReturnValue;
val[
key] =
value;
if (
base.
IsValueType)
state.
Current.
ReturnValue =
val;
}
protected override void CreateCollection(
ref Utf8JsonReader reader, [
System.
Runtime.
CompilerServices.
ScopedRef]
ref ReadStack state)
{
base.
CreateCollection(
ref reader,
ref state);
if (((
TDictionary)
state.
Current.
ReturnValue).
IsReadOnly) {
state.
Current.
ReturnValue =
null;
ThrowHelper.
ThrowNotSupportedException_CannotPopulateCollection(
Type,
ref reader,
ref state);
}
}
internal override void ConfigureJsonTypeInfo(
JsonTypeInfo jsonTypeInfo,
JsonSerializerOptions options)
{
if (
jsonTypeInfo.
CreateObject ==
null &&
Type.
IsAssignableFrom(
typeof(
Dictionary<
TKey,
TValue>)))
jsonTypeInfo.
CreateObject = (() =>
new Dictionary<
TKey,
TValue>());
}
}
}