mirror of
https://github.com/facebook/duckling.git
synced 2024-11-24 15:43:20 +03:00
bf89e34365
Reviewed By: JoelMarcey Differential Revision: D15439223 fbshipit-source-id: c5af3cb06318748142fe503945b38beffadfc28a
91 lines
2.8 KiB
Haskell
91 lines
2.8 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.
|
|
|
|
|
|
{-# LANGUAGE GADTs #-}
|
|
|
|
module Duckling.Distance.Helpers
|
|
( distance
|
|
, distanceSum
|
|
, isDistanceOfUnit
|
|
, isSimpleDistance
|
|
, unitOnly
|
|
, withInterval
|
|
, withMax
|
|
, withMin
|
|
, withUnit
|
|
, withValue
|
|
) where
|
|
|
|
import Prelude
|
|
import Data.Semigroup ((<>))
|
|
|
|
import Duckling.Dimensions.Types
|
|
import Duckling.Distance.Types (DistanceData(..))
|
|
import Duckling.Types
|
|
import qualified Duckling.Distance.Types as TDistance
|
|
import qualified Duckling.DistanceUnits.Types as DGTypes
|
|
|
|
-- -----------------------------------------------------------------
|
|
-- Patterns
|
|
|
|
isSimpleDistance :: Predicate
|
|
isSimpleDistance (Token Distance DistanceData {TDistance.value = Just _
|
|
, TDistance.unit = Just _}) = True
|
|
isSimpleDistance _ = False
|
|
|
|
isDistanceOfUnit :: TDistance.Unit -> Predicate
|
|
isDistanceOfUnit unit (Token Distance DistanceData {TDistance.unit = Just u}) =
|
|
unit == u
|
|
isDistanceOfUnit _ _ = False
|
|
|
|
-- -----------------------------------------------------------------
|
|
-- Production
|
|
|
|
distance :: Double -> DistanceData
|
|
distance x = DistanceData {TDistance.value = Just x
|
|
, TDistance.unit = Nothing
|
|
, TDistance.minValue = Nothing
|
|
, TDistance.maxValue = Nothing}
|
|
|
|
distanceSum ::
|
|
Double
|
|
-> TDistance.Unit
|
|
-> Double
|
|
-> TDistance.Unit
|
|
-> Maybe DistanceData
|
|
distanceSum v1 u1 v2 u2 = unwrapContext $ cd1 <> cd2
|
|
where
|
|
wrapContext v u = DGTypes.ContextualDistance v $ DGTypes.toSystemUnit u
|
|
cd1 = wrapContext v1 u1
|
|
cd2 = wrapContext v2 u2
|
|
|
|
unwrapContext DGTypes.Nonrelatable = Nothing
|
|
unwrapContext (DGTypes.ContextualDistance v u) =
|
|
Just $ withUnit (DGTypes.toRawUnit u) $ distance v
|
|
|
|
unitOnly :: TDistance.Unit -> DistanceData
|
|
unitOnly u = DistanceData {TDistance.unit = Just u
|
|
, TDistance.value = Nothing
|
|
, TDistance.minValue = Nothing
|
|
, TDistance.maxValue = Nothing}
|
|
|
|
withUnit :: TDistance.Unit -> DistanceData -> DistanceData
|
|
withUnit u dd = dd {TDistance.unit = Just u}
|
|
|
|
withValue :: Double -> DistanceData -> DistanceData
|
|
withValue value dd = dd {TDistance.value = Just value}
|
|
|
|
withInterval :: (Double, Double) -> DistanceData -> DistanceData
|
|
withInterval (from, to) dd = dd {TDistance.minValue = Just from
|
|
, TDistance.maxValue = Just to}
|
|
|
|
withMin :: Double -> DistanceData -> DistanceData
|
|
withMin from dd = dd {TDistance.minValue = Just from}
|
|
|
|
withMax :: Double -> DistanceData -> DistanceData
|
|
withMax to dd = dd {TDistance.maxValue = Just to}
|