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{-# LANGUAGE TemplateHaskell #-}
{-# LANGUAGE OverloadedLists #-}
--------------------------------------------------------------------------------
module Xanthous.Generators.Speech
( -- * Language definition
Language(..)
-- ** Lenses
, phonotactics
, syllablesPerWord
-- ** Phonotactics
, Phonotactics(..)
-- *** Lenses
, onsets
, nuclei
, codas
, numOnsets
, numNuclei
, numCodas
-- * Language generation
, syllable
, word
-- * Languages
, english
, gormlak
) where
--------------------------------------------------------------------------------
import Xanthous.Prelude hiding (replicateM)
import Data.Interval (Interval, (<=..<=))
import qualified Data.Interval as Interval
import Control.Monad.Random.Class (MonadRandom)
import Xanthous.Random (chooseRange, choose, ChooseElement (..), Weighted (Weighted))
import Control.Monad (replicateM)
import Test.QuickCheck (Arbitrary, CoArbitrary, Function)
import Test.QuickCheck.Instances.Text ()
import Data.List.NonEmpty (NonEmpty)
--------------------------------------------------------------------------------
newtype Phoneme = Phoneme Text
deriving stock (Show, Eq, Generic)
deriving anyclass (NFData, CoArbitrary, Function)
deriving newtype (IsString, Semigroup, Monoid, Arbitrary)
-- | The phonotactics of a language
--
-- The phonotactics of a language represent the restriction on the phonemes in
-- the syllables of a language.
--
-- Syllables in a language consist of an onset, a nucleus, and a coda (the
-- nucleus and the coda together representing the "rhyme" of the syllable).
data Phonotactics = Phonotactics
{ _onsets :: [Phoneme] -- ^ The permissible onsets, or consonant clusters
-- at the beginning of a syllable
, _nuclei :: [Phoneme] -- ^ The permissible nuclei, or vowel clusters in
-- the middle of a syllable
, _codas :: [Phoneme] -- ^ The permissible codas, or consonant clusters at
-- the end of a syllable
, _numOnsets :: Interval Word -- ^ The range of number of allowable onsets
, _numNuclei :: Interval Word -- ^ The range of number of allowable nuclei
, _numCodas :: Interval Word -- ^ The range of number of allowable codas
}
deriving stock (Show, Eq, Generic)
deriving anyclass (NFData)
makeLenses ''Phonotactics
-- | Randomly generate a syllable with the given 'Phonotactics'
syllable :: MonadRandom m => Phonotactics -> m Text
syllable phonotactics = do
let genPart num choices = do
n <- fromIntegral . fromMaybe 0 <$> chooseRange (phonotactics ^. num)
fmap (fromMaybe mempty . mconcat)
. replicateM n
. choose . ChooseElement
$ phonotactics ^. choices
(Phoneme onset) <- genPart numOnsets onsets
(Phoneme nucleus) <- genPart numNuclei nuclei
(Phoneme coda) <- genPart numCodas codas
pure $ onset <> nucleus <> coda
-- | A definition for a language
--
-- Currently this provides enough information to generate multi-syllabic words,
-- but in the future will likely also include grammar-related things.
data Language = Language
{ _phonotactics :: Phonotactics
, _syllablesPerWord :: Weighted Int NonEmpty Int
}
deriving stock (Show, Eq, Generic)
deriving anyclass (NFData)
makeLenses ''Language
word :: MonadRandom m => Language -> m Text
word lang = do
numSyllables <- choose $ lang ^. syllablesPerWord
mconcat <$> replicateM numSyllables (syllable $ lang ^. phonotactics)
--------------------------------------------------------------------------------
-- <https://en.wikipedia.org/wiki/English_phonology#Phonotactics>
englishPhonotactics :: Phonotactics
englishPhonotactics = Phonotactics
{ _onsets = [ "pl" , "bl" , "kl" , "gl" , "pr" , "br" , "tr" , "dr" , "kr"
, "gr" , "tw" , "dw" , "gw" , "kw" , "pw"
, "fl" , "sl" , {- "thl", -} "shl" {- , "vl" -}
, "p", "b", "t", "d", "k", "ɡ", "m", "n", "f", "v", "th", "s"
, "z", "h", "l", "w"
, "sp", "st", "sk"
, "sm", "sn"
, "sf", "sth"
, "spl", "skl", "spr", "str", "skr", "skw", "sm", "sp", "st", "sk"
]
, _nuclei = [ "a", "e", "i", "o", "u", "ur", "ar", "or", "ear", "are", "ure"
, "oa", "ee", "oo", "ei", "ie", "oi", "ou"
]
, _codas = [ "m", "n", "ng", "p", "t", "tsh", "k", "f", "sh", "s", "th", "x"
, "v", "z", "zh", "l", "r", "w"
, "lk", "lb", "lt", "ld", "ltsh", "ldsh", "lk"
, "rp", "rb", "rt", "rd", "rtsh", "rdsh", "rk", "rɡ"
, "lf", "lv", "lth", "ls", "lz", "lsh", "lth"
, "rf", "rv", "rth", "rs", "rz", "rth"
, "lm", "ln"
, "rm", "rn", "rl"
, "mp", "nt", "nd", "nth", "nsh", "nk"
, "mf", "ms", "mth", "nf", "nth", "ns", "nz", "nth"
, "ft", "sp", "st", "sk"
, "fth"
, "pt", "kt"
, "pth", "ps", "th", "ts", "dth", "dz", "ks"
, "lpt", "lps", "lfth", "lts", "lst", "lkt", "lks"
, "rmth", "rpt", "rps", "rts", "rst", "rkt"
, "mpt", "mps", "ndth", "nkt", "nks", "nkth"
, "ksth", "kst"
]
, _numOnsets = 0 <=..<= 1
, _numNuclei = Interval.singleton 1
, _numCodas = 0 <=..<= 1
}
english :: Language
english = Language
{ _phonotactics = englishPhonotactics
, _syllablesPerWord = Weighted [(20, 1),
(7, 2),
(2, 3),
(1, 4)]
}
gormlakPhonotactics :: Phonotactics
gormlakPhonotactics = Phonotactics
{ _onsets = [ "h", "l", "g", "b", "m", "n", "ng"
, "gl", "bl", "fl"
]
, _numOnsets = Interval.singleton 1
, _nuclei = [ "a", "o", "aa", "u" ]
, _numNuclei = Interval.singleton 1
, _codas = [ "r", "l", "g", "m", "n"
, "rl", "gl", "ml", "rm"
, "n", "k"
]
, _numCodas = Interval.singleton 1
}
gormlak :: Language
gormlak = Language
{ _phonotactics = gormlakPhonotactics
, _syllablesPerWord = Weighted [ (5, 2)
, (5, 1)
, (1, 3)
]
}
|
