{-# LANGUAGE DeriveDataTypeable #-}
{-# LANGUAGE DeriveGeneric #-}
module Distribution.CabalSpecVersion where

import Prelude ()
import Distribution.Compat.Prelude

-- | Different Cabal-the-spec versions.
--
-- We branch based on this at least in the parser.
--
data CabalSpecVersion
    = CabalSpecV1_0 -- ^ this is older than 'CabalSpecV1_2'
    | CabalSpecV1_2 -- ^ new syntax (sections)
    | CabalSpecV1_4
    | CabalSpecV1_6
    | CabalSpecV1_8
    | CabalSpecV1_10
    | CabalSpecV1_12
    -- 1.16 -- 1.14: no changes
    | CabalSpecV1_18
    | CabalSpecV1_20
    | CabalSpecV1_22
    | CabalSpecV1_24
    | CabalSpecV2_0
    | CabalSpecV2_2
    | CabalSpecV2_4
    | CabalSpecV3_0
  deriving (CabalSpecVersion -> CabalSpecVersion -> Bool
(CabalSpecVersion -> CabalSpecVersion -> Bool)
-> (CabalSpecVersion -> CabalSpecVersion -> Bool)
-> Eq CabalSpecVersion
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Generic)

-- | Show cabal spec version, but not the way in the .cabal files
--
-- @since 3.0.0.0
showCabalSpecVersion :: CabalSpecVersion -> String
showCabalSpecVersion :: CabalSpecVersion -> String
showCabalSpecVersion CabalSpecVersion
CabalSpecV3_0  = String
"3.0"
showCabalSpecVersion CabalSpecVersion
CabalSpecV2_4  = String
"2.4"
showCabalSpecVersion CabalSpecVersion
CabalSpecV2_2  = String
"2.2"
showCabalSpecVersion CabalSpecVersion
CabalSpecV2_0  = String
"2.0"
showCabalSpecVersion CabalSpecVersion
CabalSpecV1_24 = String
"1.24"
showCabalSpecVersion CabalSpecVersion
CabalSpecV1_22 = String
"1.22"
showCabalSpecVersion CabalSpecVersion
CabalSpecV1_20 = String
"1.20"
showCabalSpecVersion CabalSpecVersion
CabalSpecV1_18 = String
"1.18"
showCabalSpecVersion CabalSpecVersion
CabalSpecV1_12 = String
"1.12"
showCabalSpecVersion CabalSpecVersion
CabalSpecV1_10 = String
"1.10"
showCabalSpecVersion CabalSpecVersion
CabalSpecV1_8  = String
"1.8"
showCabalSpecVersion CabalSpecVersion
CabalSpecV1_6  = String
"1.6"
showCabalSpecVersion CabalSpecVersion
CabalSpecV1_4  = String
"1.4"
showCabalSpecVersion CabalSpecVersion
CabalSpecV1_2  = String
"1.2"
showCabalSpecVersion CabalSpecVersion
CabalSpecV1_0  = String
"1.0"

cabalSpecLatest :: CabalSpecVersion
cabalSpecLatest :: CabalSpecVersion
cabalSpecLatest = CabalSpecVersion
CabalSpecV3_0

cabalSpecFromVersionDigits :: [Int] -> CabalSpecVersion
cabalSpecFromVersionDigits :: [Int] -> CabalSpecVersion
cabalSpecFromVersionDigits [Int]
v
    | [Int]
v [Int] -> [Int] -> Bool
forall a. Ord a => a -> a -> Bool
>= [Int
2,Int
5]  = CabalSpecVersion
CabalSpecV3_0
    | [Int]
v [Int] -> [Int] -> Bool
forall a. Ord a => a -> a -> Bool
>= [Int
2,Int
3]  = CabalSpecVersion
CabalSpecV2_4
    | [Int]
v [Int] -> [Int] -> Bool
forall a. Ord a => a -> a -> Bool
>= [Int
2,Int
1]  = CabalSpecVersion
CabalSpecV2_2
    | [Int]
v [Int] -> [Int] -> Bool
forall a. Ord a => a -> a -> Bool
>= [Int
1,Int
25] = CabalSpecVersion
CabalSpecV2_0
    | [Int]
v [Int] -> [Int] -> Bool
forall a. Ord a => a -> a -> Bool
>= [Int
1,Int
23] = CabalSpecVersion
CabalSpecV1_24
    | [Int]
v [Int] -> [Int] -> Bool
forall a. Ord a => a -> a -> Bool
>= [Int
1,Int
21] = CabalSpecVersion
CabalSpecV1_22
    | [Int]
v [Int] -> [Int] -> Bool
forall a. Ord a => a -> a -> Bool
>= [Int
1,Int
19] = CabalSpecVersion
CabalSpecV1_20
    | [Int]
v [Int] -> [Int] -> Bool
forall a. Ord a => a -> a -> Bool
>= [Int
1,Int
17] = CabalSpecVersion
CabalSpecV1_18
    | [Int]
v [Int] -> [Int] -> Bool
forall a. Ord a => a -> a -> Bool
>= [Int
1,Int
11] = CabalSpecVersion
CabalSpecV1_12
    | [Int]
v [Int] -> [Int] -> Bool
forall a. Ord a => a -> a -> Bool
>= [Int
1,Int
9]  = CabalSpecVersion
CabalSpecV1_10
    | [Int]
v [Int] -> [Int] -> Bool
forall a. Ord a => a -> a -> Bool
>= [Int
1,Int
7]  = CabalSpecVersion
CabalSpecV1_8
    | [Int]
v [Int] -> [Int] -> Bool
forall a. Ord a => a -> a -> Bool
>= [Int
1,Int
5]  = CabalSpecVersion
CabalSpecV1_6
    | [Int]
v [Int] -> [Int] -> Bool
forall a. Ord a => a -> a -> Bool
>= [Int
1,Int
3]  = CabalSpecVersion
CabalSpecV1_4
    | [Int]
v [Int] -> [Int] -> Bool
forall a. Ord a => a -> a -> Bool
>= [Int
1,Int
1]  = CabalSpecVersion
CabalSpecV1_2
    | Bool
otherwise   = CabalSpecVersion
CabalSpecV1_0

specHasCommonStanzas :: CabalSpecVersion -> HasCommonStanzas
specHasCommonStanzas :: CabalSpecVersion -> HasCommonStanzas
specHasCommonStanzas CabalSpecVersion
v =
    if CabalSpecVersion
v CabalSpecVersion -> CabalSpecVersion -> Bool
forall a. Ord a => a -> a -> Bool
>= CabalSpecVersion
CabalSpecV2_2
    then HasCommonStanzas
HasCommonStanzas
    else HasCommonStanzas
NoCommonStanzas

specHasElif :: CabalSpecVersion -> HasElif
specHasElif :: CabalSpecVersion -> HasElif
specHasElif CabalSpecVersion
v = 
    if CabalSpecVersion
v CabalSpecVersion -> CabalSpecVersion -> Bool
forall a. Ord a => a -> a -> Bool
>= CabalSpecVersion
CabalSpecV2_2
    then HasElif
HasElif
    else HasElif
NoElif

-------------------------------------------------------------------------------
-- Booleans
-------------------------------------------------------------------------------

-- IDEA: make some kind of tagged booleans?
data HasElif = HasElif | NoElif
  deriving (HasElif -> HasElif -> Bool
(HasElif -> HasElif -> Bool)
-> (HasElif -> HasElif -> Bool) -> Eq HasElif
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== :: HasElif -> HasElif -> Bool
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[HasElif] -> ShowS
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show :: HasElif -> String
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showsPrec :: Int -> HasElif -> ShowS
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Show)

data HasCommonStanzas = HasCommonStanzas | NoCommonStanzas
  deriving (HasCommonStanzas -> HasCommonStanzas -> Bool
(HasCommonStanzas -> HasCommonStanzas -> Bool)
-> (HasCommonStanzas -> HasCommonStanzas -> Bool)
-> Eq HasCommonStanzas
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showsPrec :: Int -> HasCommonStanzas -> ShowS
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Show)

data HasGlobstar = HasGlobstar | NoGlobstar