{-# LANGUAGE DataKinds                  #-}
{-# LANGUAGE StandaloneDeriving         #-}
{-# LANGUAGE GADTs                      #-}
{-# LANGUAGE TypeFamilies               #-}
{-# LANGUAGE TypeInType                 #-}
{-# OPTIONS_GHC -Wno-unticked-promoted-constructors #-}
module Language.LSP.Types.LspId where

import qualified Data.Aeson                                 as A
import           Data.Hashable
import           Data.Int (Int32)
import           Data.IxMap
import           Data.Text                                  (Text)

import           Language.LSP.Types.Method

-- | Id used for a request, Can be either a String or an Int
data LspId (m :: Method f Request) = IdInt !Int32 | IdString !Text
  deriving (Int -> LspId m -> ShowS
[LspId m] -> ShowS
LspId m -> String
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instance A.ToJSON (LspId m) where
  toJSON :: LspId m -> Value
toJSON (IdInt Int32
i)    = Int32 -> Value
forall a. ToJSON a => a -> Value
A.toJSON Int32
i
  toJSON (IdString Text
s) = Text -> Value
forall a. ToJSON a => a -> Value
A.toJSON Text
s

instance A.FromJSON (LspId m) where
  parseJSON :: Value -> Parser (LspId m)
parseJSON v :: Value
v@(A.Number Scientific
_) = Int32 -> LspId m
forall (f :: From) (m :: Method f 'Request). Int32 -> LspId m
IdInt (Int32 -> LspId m) -> Parser Int32 -> Parser (LspId m)
forall (f :: * -> *) a b. Functor f => (a -> b) -> f a -> f b
<$> Value -> Parser Int32
forall a. FromJSON a => Value -> Parser a
A.parseJSON Value
v
  parseJSON  (A.String  Text
s) = LspId m -> Parser (LspId m)
forall (m :: * -> *) a. Monad m => a -> m a
return (Text -> LspId m
forall (f :: From) (m :: Method f 'Request). Text -> LspId m
IdString Text
s)
  parseJSON Value
_              = String -> Parser (LspId m)
forall (m :: * -> *) a. MonadFail m => String -> m a
fail String
"LspId"

instance IxOrd LspId where
  type Base LspId = SomeLspId
  toBase :: LspId a -> Base LspId
toBase = LspId a -> Base LspId
forall (f :: From) (m :: Method f 'Request). LspId m -> SomeLspId
SomeLspId

instance Hashable (LspId m) where
  hashWithSalt :: Int -> LspId m -> Int
hashWithSalt Int
n (IdInt Int32
i) = Int -> Int32 -> Int
forall a. Hashable a => Int -> a -> Int
hashWithSalt Int
n Int32
i
  hashWithSalt Int
n (IdString Text
t) = Int -> Text -> Int
forall a. Hashable a => Int -> a -> Int
hashWithSalt Int
n Text
t

data SomeLspId where
  SomeLspId :: !(LspId m) -> SomeLspId

deriving instance Show SomeLspId
instance Eq SomeLspId where
  SomeLspId (IdInt Int32
a) == :: SomeLspId -> SomeLspId -> Bool
== SomeLspId (IdInt Int32
b) = Int32
a Int32 -> Int32 -> Bool
forall a. Eq a => a -> a -> Bool
== Int32
b
  SomeLspId (IdString Text
a) == SomeLspId (IdString Text
b) = Text
a Text -> Text -> Bool
forall a. Eq a => a -> a -> Bool
== Text
b
  SomeLspId
_ == SomeLspId
_ = Bool
False
instance Ord SomeLspId where
  compare :: SomeLspId -> SomeLspId -> Ordering
compare (SomeLspId LspId m
x) (SomeLspId LspId m
y) = LspId m -> LspId m -> Ordering
forall (f :: From) (f :: From) (m :: Method f 'Request)
       (m :: Method f 'Request).
LspId m -> LspId m -> Ordering
go LspId m
x LspId m
y
    where
      go :: LspId m -> LspId m -> Ordering
go (IdInt    Int32
a) (IdInt    Int32
b) = Int32
a Int32 -> Int32 -> Ordering
forall a. Ord a => a -> a -> Ordering
`compare` Int32
b
      go (IdString Text
a) (IdString Text
b) = Text
a Text -> Text -> Ordering
forall a. Ord a => a -> a -> Ordering
`compare` Text
b
      go (IdInt    Int32
_) (IdString Text
_) = Ordering
LT
      go (IdString Text
_) (IdInt    Int32
_) = Ordering
GT

instance Hashable SomeLspId where
  hashWithSalt :: Int -> SomeLspId -> Int
hashWithSalt Int
n (SomeLspId LspId m
lspId) = Int -> LspId m -> Int
forall a. Hashable a => Int -> a -> Int
hashWithSalt Int
n LspId m
lspId