CHANGELOG.md

@@ -6,13 +6,6 @@ The format is based on
 and this project adheres to
 [Haskell Package Versioning Policy](https://pvp.haskell.org/).
 
-## [Unreleased]
-### Removed
-- Deprecated `Language.GraphQL.Class.gql` (moved to `Language.GraphQL.TH`).
-
-### Added
-- `String` instances from `ToGraphQL` and `FromGraphQL`.
-
 ## [1.0.6.0] - 2024-12-06
 ### Added
 - `Language.GraphQL.Class.gql` is moved to `Language.GraphQL.TH` where it was
@@ -53,7 +46,6 @@ and this project adheres to
 - JSON serialization.
 - Test helpers.
 
-[Unreleased]: https://git.caraus.tech/OSS/graphql-spice/compare/v1.0.6.0...master
 [1.0.6.0]: https://git.caraus.tech/OSS/graphql-spice/compare/v1.0.5.0...v1.0.6.0
 [1.0.5.0]: https://git.caraus.tech/OSS/graphql-spice/compare/v1.0.4.0...v1.0.5.0
 [1.0.4.0]: https://git.caraus.tech/OSS/graphql-spice/compare/v1.0.3.0...v1.0.4.0

graphql-spice.cabal

@@ -10,13 +10,13 @@ homepage:           https://git.caraus.tech/OSS/graphql-spice
 bug-reports:        https://git.caraus.tech/OSS/graphql-spice/issues
 author:             Eugen Wissner <belka@caraus.de>
 maintainer:         belka@caraus.de
-copyright:          (c) 2021-2025 Eugen Wissner
+copyright:          (c) 2021-2024 Eugen Wissner
 license:            MPL-2.0
 license-files:      LICENSE
 build-type:         Simple
 extra-source-files: CHANGELOG.md
 tested-with:
-  GHC == 9.10.1
+  GHC == 9.8.2
 
 source-repository head
   type: git

src/Language/GraphQL/Class.hs

@@ -14,6 +14,7 @@ module Language.GraphQL.Class
     , ToGraphQL(..)
     , deriveFromGraphQL
     , deriveToGraphQL
+    , gql
     ) where
 
 import Data.Int (Int8, Int16, Int32, Int64)
@@ -46,6 +47,7 @@ import Language.Haskell.TH
     , Dec(..)
     , Exp(..)
     , Info(..)
+    , Lit(..)
     , Quote(..)
     , Name
     , Q
@@ -73,6 +75,7 @@ import Language.Haskell.TH
     , litP
     , wildP
     )
+import Language.Haskell.TH.Quote (QuasiQuoter(..))
 import Data.Foldable (Foldable(..))
 import qualified Data.HashMap.Strict as HashMap
 import qualified Language.GraphQL.Type as Type
@@ -107,10 +110,6 @@ instance ToGraphQL Text
   where
     toGraphQL = Type.String
 
-instance ToGraphQL String
-  where
-    toGraphQL = Type.String . Text.pack
-
 instance ToGraphQL Int
   where
     toGraphQL = Type.Int . fromIntegral
@@ -223,11 +222,6 @@ instance FromGraphQL Text
     fromGraphQL (Type.String value) = Just value
     fromGraphQL _ = Nothing
 
-instance FromGraphQL String
-  where
-    fromGraphQL (Type.String value) = Just $ Text.unpack value
-    fromGraphQL _ = Nothing
-
 instance FromGraphQL Int
   where
     fromGraphQL = fromGraphQLToIntegral
@@ -465,3 +459,40 @@ deriveToGraphQL typeName = do
         [ litE (stringL $ nameBase name')
         , [|toGraphQL $(varE alias)|]
         ]
+
+stripIndentation :: String -> String
+stripIndentation code = reverse
+    $ dropWhile isLineBreak
+    $ reverse
+    $ unlines
+    $ indent spaces <$> lines' withoutLeadingNewlines
+  where
+    indent 0 xs = xs
+    indent count (' ' : xs) = indent (count - 1) xs
+    indent _ xs = xs
+    withoutLeadingNewlines = dropWhile isLineBreak code
+    spaces = length $ takeWhile (== ' ') withoutLeadingNewlines
+    lines' "" = []
+    lines' string =
+        let (line, rest) = break isLineBreak string
+            reminder =
+                case rest of
+                    [] -> []
+                    '\r' : '\n' : strippedString -> lines' strippedString
+                    _ : strippedString -> lines' strippedString
+         in line : reminder
+    isLineBreak = flip any ['\n', '\r'] . (==)
+
+-- | Removes leading and trailing newlines. Indentation of the first line is
+-- removed from each line of the string.
+{-# DEPRECATED gql "Use Language.GraphQL.TH.gql instead" #-}
+gql :: QuasiQuoter
+gql = QuasiQuoter
+    { quoteExp = pure . LitE . StringL . stripIndentation
+    , quotePat = const
+        $ fail "Illegal gql QuasiQuote (allowed as expression only, used as a pattern)"
+    , quoteType = const
+        $ fail "Illegal gql QuasiQuote (allowed as expression only, used as a type)"
+    , quoteDec = const
+        $ fail "Illegal gql QuasiQuote (allowed as expression only, used as a declaration)"
+    }