* allow underscore prefix and special characters in json path
* server: Rewrite/refactor JSONPath parser
The JSONPath parser is also rewritten, the previous implementation
was written in a very explicitly “recursive descent” style, but the whole
point of using attoparsec is to be able to backtrack! Taking advantage
of the combinators makes for a much simpler parser.
Co-authored-by: Vamshi Surabhi <0x777@users.noreply.github.com>
Co-authored-by: Alexis King <lexi.lambda@gmail.com>
Co-authored-by: Aleksandra Sikora <ola.zxcvbnm@gmail.com>
Co-authored-by: Shahidh K Muhammed <shahidh@hasura.io>
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