duckling/Duckling/AmountOfMoney/Rules.hs
RIAN DOUGLAS 884904b5ca Implement handling of "grand" for EN_?? locales
Summary: Add implementation of "a grand" and "<num> grand" for AU, BZ, CA, GB, IE, IN, JM, NZ, PH, TT, ZA locales. Some resolve to the local currency (AU, IN), others resolve to Dollar (NZ, PH).

Reviewed By: patapizza

Differential Revision: D7943186

fbshipit-source-id: c71ab462fa9df0ee65223ee82dc2c98457a4e13b
2018-05-17 15:45:27 -07:00

141 lines
3.3 KiB
Haskell

-- Copyright (c) 2016-present, Facebook, Inc.
-- All rights reserved.
--
-- This source code is licensed under the BSD-style license found in the
-- LICENSE file in the root directory of this source tree. An additional grant
-- of patent rights can be found in the PATENTS file in the same directory.
{-# LANGUAGE GADTs #-}
{-# LANGUAGE OverloadedStrings #-}
module Duckling.AmountOfMoney.Rules
( rules
) where
import Data.HashMap.Strict (HashMap)
import Data.Maybe
import Data.String
import Data.Text (Text)
import Prelude
import qualified Data.HashMap.Strict as HashMap
import qualified Data.Text as Text
import Duckling.AmountOfMoney.Helpers
import Duckling.AmountOfMoney.Types (Currency(..), AmountOfMoneyData (..))
import Duckling.Dimensions.Types
import Duckling.Numeral.Helpers (isPositive)
import Duckling.Numeral.Types (NumeralData (..))
import Duckling.Regex.Types
import Duckling.Types
import qualified Duckling.AmountOfMoney.Types as TAmountOfMoney
import qualified Duckling.Numeral.Types as TNumeral
currencies :: HashMap Text Currency
currencies = HashMap.fromList
[ ("aed", AED)
, ("aud", AUD)
, ("bgn", BGN)
, ("brl", BRL)
, ("byn", BYN)
, ("cad", CAD)
, ("¢", Cent)
, ("c", Cent)
, ("cny", CNY)
, ("rmb", CNY)
, ("yuan", CNY)
, ("$", Dollar)
, ("dinar", Dinar)
, ("dinars", Dinar)
, ("dollar", Dollar)
, ("dollars", Dollar)
, ("egp", EGP)
, ("", EUR)
, ("eur", EUR)
, ("euro", EUR)
, ("euros", EUR)
, ("eurs", EUR)
, ("€ur", EUR)
, ("€uro", EUR)
, ("€uros", EUR)
, ("€urs", EUR)
, ("gbp", GBP)
, ("hrk", HRK)
, ("idr", IDR)
, ("ils", ILS)
, ("inr", INR)
, ("iqd", IQD)
, ("rs", INR)
, ("rs.", INR)
, ("rupee", INR)
, ("rupees", INR)
, ("jmd", JMD)
, ("jod", JOD)
, ("¥", JPY)
, ("jpy", JPY)
, ("yen", JPY)
, ("krw", KRW)
, ("kwd", KWD)
, ("lbp", LBP)
, ("mad", MAD)
, ("myr", MYR)
, ("rm", MYR)
, ("nok", NOK)
, ("nzd", NZD)
, ("£", Pound)
, ("pt", PTS)
, ("pta", PTS)
, ("ptas", PTS)
, ("pts", PTS)
, ("qar", QAR)
, ("", RUB)
, ("rial", Rial)
, ("rials", Rial)
, ("riyal", Riyal)
, ("riyals", Riyal)
, ("ron", RON)
, ("rub", RUB)
, ("sar", SAR)
, ("sek", SEK)
, ("sgd", SGD)
, ("shekel", ILS)
, ("shekels", ILS)
, ("ttd", TTD)
, ("usd", USD)
, ("us$", USD)
, ("vnd", VND)
]
ruleCurrencies :: Rule
ruleCurrencies = Rule
{ name = "currencies"
, pattern =
[ regex "(aed|aud|bgn|brl|byn|¢|c|cad|cny|\\$|dinars?|dollars?|egp|(e|€)uro?s?|€|gbp|hrk|idr|ils|inr|iqd|jmd|jod|¥|jpy|krw|kwd|lbp|mad|myr|rm|nok|nzd|£|pta?s?|qar|₽|rs\\.?|riy?als?|ron|rub|rupees?|sar|sek|sgb|shekels?|ttd|us(d|\\$)|vnd|yen|yuan)"
]
, prod = \tokens -> case tokens of
(Token RegexMatch (GroupMatch (match:_)):_) -> do
c <- HashMap.lookup (Text.toLower match) currencies
Just . Token AmountOfMoney $ currencyOnly c
_ -> Nothing
}
ruleAmountUnit :: Rule
ruleAmountUnit = Rule
{ name = "<amount> <unit>"
, pattern =
[ Predicate isPositive
, Predicate isCurrencyOnly
]
, prod = \tokens -> case tokens of
(Token Numeral NumeralData{TNumeral.value = v}:
Token AmountOfMoney AmountOfMoneyData{TAmountOfMoney.currency = c}:
_) -> Just . Token AmountOfMoney . withValue v $ currencyOnly c
_ -> Nothing
}
rules :: [Rule]
rules =
[ ruleAmountUnit
, ruleCurrencies
]