duckling/Duckling/Email/EN/Rules.hs
Julien Odent 0e950620b8 Email: restrict domain extensions to letters when spelling out
Summary: We would parse things like "tonight at 6.40".

Reviewed By: blandinw

Differential Revision: D6066926

fbshipit-source-id: d18a8c6
2017-10-16 12:19:22 -07:00

41 lines
1.0 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.Email.EN.Rules
( rules ) where
import Data.String
import Prelude
import qualified Data.Text as Text
import Duckling.Dimensions.Types
import Duckling.Email.Types (EmailData (..))
import Duckling.Regex.Types
import Duckling.Types
import qualified Duckling.Email.Types as TEmail
ruleEmailSpelledOut :: Rule
ruleEmailSpelledOut = Rule
{ name = "email spelled out"
, pattern =
[ regex "([\\w\\._+-]+) at ([\\w_-]+(\\.[a-zA-Z]+)+)"
]
, prod = \xs -> case xs of
(Token RegexMatch (GroupMatch (m1:m2:_)):_) ->
Just $ Token Email EmailData {TEmail.value = Text.concat [m1, "@", m2]}
_ -> Nothing
}
rules :: [Rule]
rules =
[ ruleEmailSpelledOut
]