Results do not match other implementations

[cburgmer]

The following queries provide results that do not match those of other implementations of JSONPath
(compare https://cburgmer.github.io/json-path-comparison/):

• $.2
  Input:

  {"a": "first", "2": "second", "b": "third"}
  

  Expected output:

  ["second"]
  

  Error:

  init terminating in do_boot ({badmatch,{error,{1,ejsonpath_parse,syntax error before: 2}}})
  
  Crash dump is being written to: erl_crash.dump...done
  {"init terminating in do_boot",{badmatch,{error,{1,ejsonpath_parse,["syntax error before: ",["2"]]}}}}
  

• $[-1:]
  Input:

  ["first", "second", "third"]
  

  Expected output:

  ["third"]
  

  Error:

  init terminating in do_boot ({badmatch,{error,{1,ejsonpath_parse,syntax error before: ':'}}})
  
  Crash dump is being written to: erl_crash.dump...done
  {"init terminating in do_boot",{badmatch,{error,{1,ejsonpath_parse,["syntax error before: ","':'"]}}}}
  

• $[:]
  Input:

  ["first", "second"]
  

  Expected output:

  ["first", "second"]
  

  Error:

  init terminating in do_boot ({badmatch,{error,{1,ejsonpath_parse,syntax error before: ']'}}})
  
  Crash dump is being written to: erl_crash.dump...done
  {"init terminating in do_boot",{badmatch,{error,{1,ejsonpath_parse,["syntax error before: ","']'"]}}}}
  

• $[1:3]
  Input:

  ["first", "second", "third", "forth", "fifth"]
  

  Expected output:

  ["second", "third"]
  

  Actual output:

  ["second", "third", "forth", "fifth"]
  

• $[0:3:2]
  Input:

  ["first", "second", "third", "forth", "fifth"]
  

  Expected output:

  ["first", "third"]
  

  Error:

  init terminating in do_boot ({not_implemented,slice})
  
  Crash dump is being written to: erl_crash.dump...done
  {"init terminating in do_boot",{not_implemented,slice}}
  

• $[::2]
  Input:

  ["first", "second", "third", "forth", "fifth"]
  

  Expected output:

  ["first", "third", "fifth"]
  

  Error:

  init terminating in do_boot ({badmatch,{error,{1,ejsonpath_parse,syntax error before: ':'}}})
  
  Crash dump is being written to: erl_crash.dump...done
  {"init terminating in do_boot",{badmatch,{error,{1,ejsonpath_parse,["syntax error before: ","':'"]}}}}
  

• $..key
  Input:

  {"object": {"key": "value", "array": [{"key": "something"}, {"key": {"key": "russian dolls"}}]}, "key": "top"}
  

  Expected output:

  ["russian dolls", "something", "top", "value", {"key": "russian dolls"}]
  

  Error:

  init terminating in do_boot (function_clause)
  
  Crash dump is being written to: erl_crash.dump...done
  {"init terminating in do_boot",function_clause}
  

• $
  Input:

  {"key": "value", "another key": {"complex": ["a", 1]}}
  

  Expected output:

  [{"another key": {"complex": ["a", 1]}, "key": "value"}]
  

  Error:

  init terminating in do_boot ({badmatch,{error,{1,ejsonpath_parse,syntax error before: }}})
  
  Crash dump is being written to: erl_crash.dump...done
  {"init terminating in do_boot",{badmatch,{error,{1,ejsonpath_parse,["syntax error before: ",[]]}}}}
  

For reference, the output was generated by the program in https://github.com/cburgmer/json-path-comparison/tree/master/implementations/Erlang_ejsonpath.

[seriyps]

Yep, most of them are known issues. But now project is not actively maintained.
If someone will create a PR I will be able to review, but unlikely will fix myself