mirror of
https://github.com/hasura/graphql-engine.git
synced 2024-12-24 07:52:14 +03:00
11a454c2d6
This commit applies ormolu to the whole Haskell code base by running `make format`. For in-flight branches, simply merging changes from `main` will result in merge conflicts. To avoid this, update your branch using the following instructions. Replace `<format-commit>` by the hash of *this* commit. $ git checkout my-feature-branch $ git merge <format-commit>^ # and resolve conflicts normally $ make format $ git commit -a -m "reformat with ormolu" $ git merge -s ours post-ormolu https://github.com/hasura/graphql-engine-mono/pull/2404 GitOrigin-RevId: 75049f5c12f430c615eafb4c6b8e83e371e01c8e
64 lines
1.8 KiB
Haskell
64 lines
1.8 KiB
Haskell
module Data.Parser.JSONPath
|
|
( parseJSONPath,
|
|
JSONPathElement (..),
|
|
JSONPath,
|
|
)
|
|
where
|
|
|
|
import Control.Applicative
|
|
import Control.Monad (void)
|
|
import Data.Aeson.Internal (JSONPath, JSONPathElement (..))
|
|
import Data.Attoparsec.Text
|
|
import Data.Bifunctor
|
|
import Data.Text qualified as T
|
|
import Prelude
|
|
|
|
parseJSONPath :: T.Text -> Either String JSONPath
|
|
parseJSONPath "$" = Right []
|
|
parseJSONPath txt =
|
|
first (const invalidMessage) $
|
|
parseOnly (optional (char '$') *> many1' element <* endOfInput) txt
|
|
where
|
|
invalidMessage =
|
|
T.unpack txt
|
|
++ ". Accept letters, digits, underscore (_) or hyphen (-) only"
|
|
++ ". Use single quotes enclosed in bracket (['...']) if there is any special character"
|
|
|
|
element :: Parser JSONPathElement
|
|
element =
|
|
Key <$> (optional (char '.') *> name) -- field or .field
|
|
<|> bracketElement -- [42] or ['field']
|
|
|
|
name :: Parser T.Text
|
|
name = go <?> "property name"
|
|
where
|
|
go = do
|
|
firstChar <-
|
|
letter
|
|
<|> char '_'
|
|
<?> "first character of property name must be a letter or underscore"
|
|
otherChars <- many' (letter <|> digit <|> satisfy (inClass "-_"))
|
|
pure $ T.pack (firstChar : otherChars)
|
|
|
|
-- | Parses a JSON property key or index in square bracket format, e.g.
|
|
-- > [42]
|
|
-- > ["hello"]
|
|
-- > ['你好']
|
|
bracketElement :: Parser JSONPathElement
|
|
bracketElement = do
|
|
void $ optional (char '.') *> char '['
|
|
result <-
|
|
Index <$> decimal
|
|
<|> Key <$> quotedString '"'
|
|
<|> Key <$> quotedString '\''
|
|
void $ char ']'
|
|
pure result
|
|
where
|
|
quotedString delimiter = do
|
|
void $ char delimiter
|
|
result <- T.pack <$> many' (charOrEscape delimiter)
|
|
void $ char delimiter
|
|
pure result
|
|
|
|
charOrEscape delimiter = (char '\\' *> anyChar) <|> notChar delimiter
|