pub suberror CompileError {
  CompileError(String)
}

pub(all) struct Axis {
  mark : 
@sayoi7799/moon_vegalite/scene.Mark
Mark
  orient : String
  has_grid : Bool
  has_ticks : Bool
  has_labels : Bool
  has_domain : Bool
  has_title : Bool
  overlap : String?
  overlap_separation : Double
}

pub(all) struct AxisPlan {
  scale : RScale
  domain : Array[
@sayoi7799/moon_vegalite/value.Value
Value]
  orient : String
  title : String?
  props : Map[String, 
@sayoi7799/moon_vegalite/value.Value
Value]
  grid_scale : RScale?
  tick_count : Double
}

pub(all) struct Compiled {
  scene : 
@sayoi7799/moon_vegalite/scene.Mark
Mark
  width : Double
  height : Double
  origin : (Double, Double)
  padding : Double
  view_width : Double
  view_height : Double
  background : String?
}

pub(all) struct Legend {
  mark : 
@sayoi7799/moon_vegalite/scene.Mark
Mark
  orient : String
  entry_items : Array[
@sayoi7799/moon_vegalite/scene.Item
Item]
  scope_mark : 
@sayoi7799/moon_vegalite/scene.Mark
Mark
  entry_mark : 
@sayoi7799/moon_vegalite/scene.Mark
Mark
  title_mark : 
@sayoi7799/moon_vegalite/scene.Mark
Mark?
}

pub(all) struct LegendEntry {
  label : String
  props : Map[String, 
@sayoi7799/moon_vegalite/value.Value
Value]
}

pub(all) struct LegendPlan {
  title : String?
  orient : String
  symbol : Map[String, 
@sayoi7799/moon_vegalite/value.Value
Value]
  entries : Array[LegendEntry]
}

pub(all) enum RScale {
  Cont(
@sayoi7799/moon_vegalite/scale.Continuous
Continuous)
  Binned(
@sayoi7799/moon_vegalite/scale.Continuous
Continuous, Array[Double])
  Time(
@sayoi7799/moon_vegalite/scale.Continuous
Continuous)
  Band(
@sayoi7799/moon_vegalite/scale.Band
Band)
}

pub struct Title {
  mark : 
@sayoi7799/moon_vegalite/scene.Mark
Mark
}

fn build_gradient_legend(title : String?, seq : 
@sayoi7799/moon_vegalite/scale.Sequential
Sequential, length : Double, ramp_opacity : Double, label_format : String?) -> Legend raise CompileError

fn build_legend(plan : LegendPlan) -> Legend raise CompileError

fn build_title(text : String) -> Title raise CompileError

fn compile(text : String) -> Compiled raise CompileError

fn validate(spec : 
@sayoi7799/moon_vegalite/spec.Spec
Spec) -> Unit raise CompileError