WriteStackFrame.cs

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using System.Collections;
using System.Diagnostics;
using System.Text.Json.Serialization;
using System.Text.Json.Serialization.Metadata;
 
namespace System.Text.Json;
 
[DebuggerDisplay("ConverterStrategy.{JsonTypeInfo.PropertyInfoForTypeInfo.ConverterStrategy}, {JsonTypeInfo.Type.Name}")]
internal struct WriteStackFrame
{
    public IEnumerator CollectionEnumerator;
 
    public IAsyncDisposable AsyncDisposable;
 
    public bool AsyncEnumeratorIsPendingCompletion;
 
    public JsonPropertyInfo DeclaredJsonPropertyInfo;
 
    public bool IsWritingExtensionDataProperty;
 
    public JsonTypeInfo JsonTypeInfo;
 
    public int OriginalDepth;
 
    public bool ProcessedStartToken;
 
    public bool ProcessedEndToken;
 
    public StackFramePropertyState PropertyState;
 
    public int EnumeratorIndex;
 
    public string JsonPropertyNameAsString;
 
    public MetadataPropertyName MetadataPropertyName;
 
    private JsonPropertyInfo PolymorphicJsonPropertyInfo;
 
    public JsonNumberHandling? NumberHandling;
 
    public void EndDictionaryElement()
    {
        PropertyState = StackFramePropertyState.None;
    }
 
    public void EndProperty()
    {
        DeclaredJsonPropertyInfo = null;
        JsonPropertyNameAsString = null;
        PolymorphicJsonPropertyInfo = null;
        PropertyState = StackFramePropertyState.None;
    }
 
    public JsonPropertyInfo GetPolymorphicJsonPropertyInfo()
    {
        return PolymorphicJsonPropertyInfo ?? DeclaredJsonPropertyInfo;
    }
 
    public JsonConverter InitializeReEntry(Type type, JsonSerializerOptions options)
    {
        if (PolymorphicJsonPropertyInfo?.RuntimePropertyType != type)
        {
            JsonTypeInfo orAddClass = options.GetOrAddClass(type);
            PolymorphicJsonPropertyInfo = orAddClass.PropertyInfoForTypeInfo;
        }
        return PolymorphicJsonPropertyInfo.ConverterBase;
    }
}