private static JsonParameterInfo AddConstructorParameter(
ParameterInfo parameterInfo,
JsonPropertyInfo jsonPropertyInfo,
JsonSerializerOptions options)
{
string matchingPropertyName = jsonPropertyInfo.NameAsString !;
if (jsonPropertyInfo.IsIgnored)
{
return(JsonParameterInfo.CreateIgnoredParameterPlaceholder(matchingPropertyName, parameterInfo, options));
}
JsonConverter converter = jsonPropertyInfo.ConverterBase;
JsonParameterInfo jsonParameterInfo = converter.CreateJsonParameterInfo();
jsonParameterInfo.Initialize(
matchingPropertyName,
jsonPropertyInfo.DeclaredPropertyType,
jsonPropertyInfo.RuntimePropertyType !,
parameterInfo,
converter,
options);
return(jsonParameterInfo);
}
// Create a parameter that is ignored at run-time. It uses the same type (typeof(sbyte)) to help
// prevent issues with unsupported types and helps ensure we don't accidently (de)serialize it.
public static JsonParameterInfo CreateIgnoredParameterPlaceholder(
ParameterInfo parameterInfo,
JsonPropertyInfo matchingProperty,
JsonSerializerOptions options)
{
JsonParameterInfo jsonParameterInfo = new JsonParameterInfo <sbyte>();
jsonParameterInfo.Options = options;
jsonParameterInfo.ParameterInfo = parameterInfo;
jsonParameterInfo.ShouldDeserialize = false;
jsonParameterInfo.DetermineParameterName(matchingProperty);
return(jsonParameterInfo);
}
private static JsonParameterInfo AddConstructorParameter(
ParameterInfo parameterInfo,
JsonPropertyInfo jsonPropertyInfo,
JsonSerializerOptions options)
{
if (jsonPropertyInfo.IsIgnored)
{
return(JsonParameterInfo.CreateIgnoredParameterPlaceholder(jsonPropertyInfo, options));
}
JsonConverter converter = jsonPropertyInfo.ConverterBase;
JsonParameterInfo jsonParameterInfo = converter.CreateJsonParameterInfo();
jsonParameterInfo.Initialize(
jsonPropertyInfo.RuntimePropertyType !,
parameterInfo,
jsonPropertyInfo,
options);
return(jsonParameterInfo);
}
private void InitializeConstructorParameters(Dictionary <string, JsonPropertyInfo> propertyCache, ConstructorInfo constructorInfo)
{
ParameterInfo[] parameters = constructorInfo !.GetParameters();
Dictionary <string, JsonParameterInfo> parameterCache = CreateParameterCache(parameters.Length, Options);
foreach (ParameterInfo parameterInfo in parameters)
{
PropertyInfo?firstMatch = null;
bool isBound = false;
foreach (JsonPropertyInfo jsonPropertyInfo in PropertyCacheArray !)
{
// This is not null because it is an actual
// property on a type, not a "policy property".
PropertyInfo propertyInfo = jsonPropertyInfo.PropertyInfo !;
string camelCasePropName = JsonNamingPolicy.CamelCase.ConvertName(propertyInfo.Name);
if (parameterInfo.Name == camelCasePropName &&
parameterInfo.ParameterType == propertyInfo.PropertyType)
{
if (isBound)
{
Debug.Assert(firstMatch != null);
// Multiple object properties cannot bind to the same
// constructor parameter.
ThrowHelper.ThrowInvalidOperationException_MultiplePropertiesBindToConstructorParameters(
Type,
parameterInfo,
firstMatch,
propertyInfo,
constructorInfo);
}
JsonParameterInfo jsonParameterInfo = AddConstructorParameter(parameterInfo, jsonPropertyInfo, Options);
// One object property cannot map to multiple constructor
// parameters (ConvertName above can't return multiple strings).
parameterCache.Add(jsonPropertyInfo.NameAsString !, jsonParameterInfo);
// Remove property from deserialization cache to reduce the number of JsonPropertyInfos considered during JSON matching.
propertyCache.Remove(jsonPropertyInfo.NameAsString !);
isBound = true;
firstMatch = propertyInfo;
}
}
}
// It is invalid for the extension data property to bind with a constructor argument.
if (DataExtensionProperty != null &&
parameterCache.ContainsKey(DataExtensionProperty.NameAsString !))
{
ThrowHelper.ThrowInvalidOperationException_ExtensionDataCannotBindToCtorParam(DataExtensionProperty.PropertyInfo !, Type, constructorInfo);
}
ParameterCache = parameterCache;
ParameterCount = parameters.Length;
PropertyCache = propertyCache;
}
