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ab0ad0256e
Summary: * Locales support for the library, following `<Lang>_<Region>` with ISO 639-1 code for `<Lang>` and ISO 3166-1 alpha-2 code for `<Region>` (#33) * `Locale` opaque type (composite of `Lang` and `Region`) with `makeLocale` smart constructor to only allow valid `(Lang, Region)` combinations * API: `Context`'s `lang` parameter has been replaced by `locale`, with optional `Region` and backward compatibility. * `Rules/<Lang>.hs` exposes - `langRules`: cross-locale rules for `<Lang>`, from `<Dimension>/<Lang>/Rules.hs` - `localeRules`: locale-specific rules, from `<Dimension>/<Lang>/<Region>/Rules.hs` - `defaultRules`: `langRules` + specific rules from select locales to ensure backward-compatibility * Corpus, tests & classifiers - 1 classifier per locale, with default classifier (`<Lang>_XX`) when no locale provided (backward-compatible) - Default classifiers are built on existing corpus - Locale classifiers are built on - `<Dimension>/<Lang>/Corpus.hs` exposes a common `corpus` to all locales of `<Lang>` - `<Dimension>/<Lang>/<Region>/Corpus.hs` exposes `allExamples`: a list of examples specific to the locale (following `<Dimension>/<Lang>/<Region>/Rules.hs`). - Locale classifiers use the language corpus extended with the locale examples as training set. - Locale examples need to use the same `Context` (i.e. reference time) as the language corpus. - For backward compatibility, `<Dimension>/<Lang>/Corpus.hs` can expose also `defaultCorpus`, which is `corpus` augmented with specific examples. This is controlled by `getDefaultCorpusForLang` in `Duckling.Ranking.Generate`. - Tests run against each classifier to make sure runtime works as expected. * MM/DD (en_US) vs DD/MM (en_GB) example to illustrate Reviewed By: JonCoens, blandinw Differential Revision: D6038096 fbshipit-source-id: f29c28d
55 lines
1.6 KiB
Haskell
55 lines
1.6 KiB
Haskell
-- Copyright (c) 2016-present, Facebook, Inc.
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-- All rights reserved.
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--
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-- This source code is licensed under the BSD-style license found in the
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-- LICENSE file in the root directory of this source tree. An additional grant
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-- of patent rights can be found in the PATENTS file in the same directory.
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{-# LANGUAGE FlexibleContexts #-}
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{-# LANGUAGE TypeFamilies #-}
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module Duckling.Resolve
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( Context(..)
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, DucklingTime(..)
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, Resolve(..)
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, fromUTC
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, toUTC
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) where
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import Data.Aeson
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import Prelude
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import qualified Data.Time as Time
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import qualified Data.Time.LocalTime.TimeZone.Series as Series
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import Duckling.Locale
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-- | Internal time reference.
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-- We work as if we were in UTC time and use `ZoneSeriesTime` to house the info.
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-- We convert to local time at resolution, using `fromUTC`.
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newtype DucklingTime = DucklingTime Series.ZoneSeriesTime
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deriving (Eq, Show)
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data Context = Context
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{ referenceTime :: DucklingTime
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, locale :: Locale
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}
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deriving (Eq, Show)
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class ToJSON (ResolvedValue a) => Resolve a where
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type ResolvedValue a
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resolve :: Context -> a -> Maybe (ResolvedValue a)
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-- | Given a UTCTime and an TimeZone, build a ZonedTime (no conversion)
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fromUTC :: Time.UTCTime -> Time.TimeZone -> Time.ZonedTime
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fromUTC (Time.UTCTime day diffTime) timeZone = Time.ZonedTime localTime timeZone
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where
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localTime = Time.LocalTime day timeOfDay
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timeOfDay = Time.timeToTimeOfDay diffTime
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-- | Given a LocalTime, build a UTCTime (no conversion)
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toUTC :: Time.LocalTime -> Time.UTCTime
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toUTC (Time.LocalTime day timeOfDay) = Time.UTCTime day diffTime
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where
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diffTime = Time.timeOfDayToTime timeOfDay
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