module-inspector/Runtime/ValueModifiers/AssignIfNullAttribute.cs

using System;

namespace Module.Inspector
{
    [AttributeUsage(AttributeTargets.Field, AllowMultiple = false, Inherited = true)]
    public sealed class AssignIfNullAttribute : ValueModifierPropertyAttribute
    {
        public readonly bool useType;
        public readonly Type type;
        public readonly bool includeChildren;

        public AssignIfNullAttribute()
        {
            useType = false;
        }

        public AssignIfNullAttribute(bool includeChildren)
        {
            useType = false;
            this.includeChildren = includeChildren;
        }

        public AssignIfNullAttribute(Type type)
        {
            this.type = type;
            useType = true;
        }

        public AssignIfNullAttribute(Type type, bool includeChildren)
        {
            this.type = type;
            this.includeChildren = includeChildren;
            useType = true;
        }
    }
}