-- -*- Mode: Haskell; -*-
--
-- This module defines abstract syntax tree of MIDA language.
--
-- Copyright © 2014, 2015 Mark Karpov
--
-- MIDA is free software: you can redistribute it and/or modify it under the
-- terms of the GNU General Public License as published by the Free Software
-- Foundation, either version 3 of the License, or (at your option) any
-- later version.
--
-- MIDA is distributed in the hope that it will be useful, but WITHOUT ANY
-- WARRANTY; without even the implied warranty of MERCHANTABILITY or FITNESS
-- FOR A PARTICULAR PURPOSE. See the GNU General Public License for more
-- details.
--
-- You should have received a copy of the GNU General Public License along
-- with this program. If not, see <http://www.gnu.org/licenses/>.

module Mida.Language.SyntaxTree
  ( SyntaxTree
  , Sel (..) )
where

type SyntaxTree = [Sel]

data Sel -- syntactic element
  = Value     Int
  | Section   [Sel]
  | Multi     [Sel]
  | CMulti    [([Sel], [Sel])]
  | Reference String
  | Range     Int Int
  | Product   Sel Sel
  | Division  Sel Sel
  | Sum       Sel Sel
  | Diff      Sel Sel
  | Loop      Sel Sel
  | Rotation  Sel Sel
  | Reverse   Sel
    deriving (Eq, Show)