{-# LANGUAGE DeriveDataTypeable #-}
{-# LANGUAGE DeriveGeneric #-}
{-# LANGUAGE GeneralizedNewtypeDeriving #-}

module Distribution.Types.ComponentId
  ( ComponentId
  , unComponentId
  , mkComponentId
  ) where

import Distribution.Compat.Prelude
import Distribution.Utils.ShortText
import Prelude ()

import Distribution.Parsec
import Distribution.Pretty

import qualified Distribution.Compat.CharParsing as P
import Text.PrettyPrint (text)

-- | A 'ComponentId' uniquely identifies the transitive source
-- code closure of a component (i.e. libraries, executables).
--
-- For non-Backpack components, this corresponds one to one with
-- the 'UnitId', which serves as the basis for install paths,
-- linker symbols, etc.
--
-- Use 'mkComponentId' and 'unComponentId' to convert from/to a
-- 'String'.
--
-- This type is opaque since @Cabal-2.0@
--
-- @since 2.0.0.2
newtype ComponentId = ComponentId ShortText
  deriving ((forall x. ComponentId -> Rep ComponentId x)
-> (forall x. Rep ComponentId x -> ComponentId)
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-- | Construct a 'ComponentId' from a 'String'
--
-- 'mkComponentId' is the inverse to 'unComponentId'
--
-- Note: No validations are performed to ensure that the resulting
-- 'ComponentId' is valid
--
-- @since 2.0.0.2
mkComponentId :: String -> ComponentId
mkComponentId :: String -> ComponentId
mkComponentId = ShortText -> ComponentId
ComponentId (ShortText -> ComponentId)
-> (String -> ShortText) -> String -> ComponentId
forall b c a. (b -> c) -> (a -> b) -> a -> c
. String -> ShortText
toShortText

-- | Convert 'ComponentId' to 'String'
--
-- @since 2.0.0.2
unComponentId :: ComponentId -> String
unComponentId :: ComponentId -> String
unComponentId (ComponentId ShortText
s) = ShortText -> String
fromShortText ShortText
s

-- | 'mkComponentId'
--
-- @since 2.0.0.2
instance IsString ComponentId where
  fromString :: String -> ComponentId
fromString = String -> ComponentId
mkComponentId

instance Binary ComponentId
instance Structured ComponentId

instance Pretty ComponentId where
  pretty :: ComponentId -> Doc
pretty = String -> Doc
text (String -> Doc) -> (ComponentId -> String) -> ComponentId -> Doc
forall b c a. (b -> c) -> (a -> b) -> a -> c
. ComponentId -> String
unComponentId

instance Parsec ComponentId where
  parsec :: forall (m :: * -> *). CabalParsing m => m ComponentId
parsec = String -> ComponentId
mkComponentId (String -> ComponentId) -> m String -> m ComponentId
forall a b. (a -> b) -> m a -> m b
forall (f :: * -> *) a b. Functor f => (a -> b) -> f a -> f b
`fmap` (Char -> Bool) -> m String
forall (m :: * -> *). CharParsing m => (Char -> Bool) -> m String
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abi_char
    where
      abi_char :: Char -> Bool
abi_char Char
c = Char -> Bool
isAlphaNum Char
c Bool -> Bool -> Bool
|| Char
c Char -> String -> Bool
forall a. Eq a => a -> [a] -> Bool
forall (t :: * -> *) a. (Foldable t, Eq a) => a -> t a -> Bool
`elem` String
"-_."

instance NFData ComponentId where
  rnf :: ComponentId -> ()
rnf = String -> ()
forall a. NFData a => a -> ()
rnf (String -> ()) -> (ComponentId -> String) -> ComponentId -> ()
forall b c a. (b -> c) -> (a -> b) -> a -> c
. ComponentId -> String
unComponentId