/// <summary>
/// Creates an action that sets the value of the specified field. The first parameter
/// of the resulting function takes the object whose field value is to be set. If the
/// specified field is static, the first parameter of the resulting function is ignored.
/// The second parameter of the resulting function takes the new value of the field.
/// </summary>
/// <param name="field">The field to create the setter action for.</param>
/// <returns>An action that sets the field value.</returns>
public static Action <object, object> CreateSetter(this FieldInfo field)
{
if (field is null)
{
throw new ArgumentNullException(nameof(field));
}
if (field.IsInitOnly)
{
throw new ArgumentException("field cannot be readonly", nameof(field));
}
var setter = new FieldSetter(field);
QueueUserWorkItem(setter, s => s.SetOptimizedAction());
return(setter.SetValue);
}
/// <summary>
/// Creates an action that sets the value of the specified field. The first parameter
/// of the resulting function takes the object whose field value is to be set. If the
/// specified field is static, the first parameter of the resulting function is ignored.
/// The second parameter of the resulting function takes the new value of the field.
/// </summary>
/// <typeparam name="TFieldType">
/// The type of the second parameter of the resulting action. This type must be compatible with
/// the <see cref="FieldInfo.FieldType"/> of the <paramref name="field"/> parameter.
/// </typeparam>
/// <param name="field">The field to create the setter action for.</param>
/// <returns>An action that sets the field value.</returns>
public static Action <object, TFieldType> CreateSetter <TFieldType>(this FieldInfo field)
{
if (field is null)
{
throw new ArgumentNullException(nameof(field));
}
if (!field.FieldType.IsAssignableFrom(typeof(TFieldType)))
{
throw new ArgumentException("field.FieldType must be assignable from TFieldType", nameof(field));
}
if (field.IsInitOnly)
{
throw new ArgumentException("field cannot be readonly", nameof(field));
}
var setter = new FieldSetter <TFieldType>(field);
QueueUserWorkItem(setter, s => s.SetOptimizedAction());
return(setter.SetValue);
}