/// <summary>
/// Deserializes a <see cref="LambdaExpression"/>.
/// </summary>
/// <param name="json">The serialized fragment.</param>
/// <param name="state">State, such as <see cref="JsonSerializerOptions"/>, for the deserialization.</param>
/// <returns>The <see cref="LambdaExpression"/>.</returns>
public override LambdaExpression Deserialize(
JsonElement json,
SerializationState state)
{
var materializedType = GetMemberFromKey <Type>(
json.GetProperty(nameof(Lambda.LambdaTypeKey))
.GetString());
var materializedReturnType = GetMemberFromKey <Type>(json.GetProperty(nameof(Lambda.ReturnTypeKey))
.GetString());
var body = Serializer.Deserialize(json.GetProperty(nameof(Lambda.Body)), state);
var name = json.GetNullableProperty(nameof(Lambda.Name)).GetString();
var list = json.GetNullableProperty(nameof(Lambda.Parameters));
var parameterList = list.ValueKind == JsonValueKind.Array ?
list.EnumerateArray().Select(element =>
Serializer.Deserialize(element, state) as ParameterExpression).ToList() :
new List <ParameterExpression>();
return
(AnonymousTypeAdapter.TransformLambda(
Expression.Lambda(materializedType, body, name, parameterList)));
}
/// <summary>
/// Serialize a <see cref="LambdaExpression"/> to a <see cref="Lambda"/>.
/// </summary>
/// <param name="expression">The <see cref="LambdaExpression"/>.</param>
/// <param name="state">State, such as <see cref="JsonSerializerOptions"/>, for the serialization.</param>
/// <returns>The <see cref="Lambda"/>.</returns>
public override Lambda Serialize(
LambdaExpression expression,
SerializationState state)
{
if (expression == null)
{
return(null);
}
expression = AnonymousTypeAdapter.TransformLambda(expression);
var result = new Lambda(expression)
{
Body = Serializer.Serialize(expression.Body, state),
};
foreach (var parameter in expression.Parameters)
{
result.Parameters.Add(Serializer.Serialize(parameter, state) as Parameter);
}
return(result);
}