class FieldNames:
    skip_record = "_uzon_skip_record"
    uzon_instrumented = "__uzon_instrumented__"
    uzon_record_step = "__uzon_record_step__"
    ctx = "ctx"
    get_current_instance = "get_current_instance"
    uzon_ir = "__uzon_ir__"
    uzon_steps = "__uzon_steps__"
    value = "value"
    unit = "unit"
    
    # 指令魔法值
    directive_hide = "hide"
    directive_show = "show"
