Results do not match other implementations

[Christoph Burgmer]

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

• $[1:3]
  Input:

  {":": 42, "more": "string", "a": 1, "b": 2, "c": 3}
  

  Expected output:

  []
  

  Error:

  Filter: [1:3] can only be applied to arrays. Current context is: {
      ":" = 42;
      a = 1;
      b = 2;
      c = 3;
      more = string;
  }
  

• $[:]
  Input:

  ["first", "second"]
  

  Expected output:

  ["first", "second"]
  

  Error:

  Failed to parse SliceOperation: :
  

• $[::]
  Input:

  ["first", "second"]
  

  Expected output:

  ["first", "second"]
  

  Error:

  Failed to parse SliceOperation: ::
  

• $[0:3:2]
  Input:

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

  Expected output:

  ["first", "third"]
  

  Actual output:

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

• $[',']
  Input:

  {",": "value", "another": "entry"}
  

  Expected output:

  "value"
  

  Error:

  Found empty property at index 5
  

• $[0]['c','d']
  Input:

  [{"c": "cc1", "d": "dd1", "e": "ee1"}, {"c": "cc2", "d": "dd2", "e": "ee2"}]
  

  Expected output:

  ["cc1", "dd1"]
  

  Actual output:

  {"c": "cc1", "d": "dd1"}
  

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

[Christoph Burgmer]

I can see perfect alignment with the Java implementation :)
Do feel free to decide whether to follow up on those results or not. This issue for now is just meant to create visibility!

[Julien-Pierre Avérous]

@cburgmer Thank you very much for this incredible work, very helpful !

So well, yes, my choice was to follow this specific Java implementation because I didn't have enough time to take my own road, and it's still the case, so I don't want to divert, and so I will stay on this choice. If they fix those problems, I will integrate the fixes in my Objective-C version ;)