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{-# language OverloadedStrings #-} | |
module Main where | |
-- Author: lvwenlong_lambda@qq.com | |
-- Last Modified:CST 2015-08-20 14:01:07 星期四 | |
import Text.ParserCombinators.Parsec | |
import Control.Applicative hiding((<|>)) | |
import Data.String | |
data Expr = Add Expr Expr2 | Sub Expr Expr2 | E2 Expr2 | |
data Expr2 = Mul Expr2 Expr3 | Div Expr2 Expr3 | E3 Expr3 | |
data Expr3 = Quote Expr | NumLit Int |