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:

  parsing error: $.2    :1:2 - 1:4 unexpected Float while scanning operator

• [ ] $[-1] Input:

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

  Expected output:

  ["third"]

  Error:

  index -1 out of bounds

• [ ] $[?(@.key=='value')] Input:

  [{"key": "some"}, {"key": "value"}]

  Expected output:

  [{"key": "value"}]

  Error:

  parsing error: $[?(@.key=='value')]   :1:12 - 1:19 could not parse string: invalid syntax

• [ ] $[?(@.key)] Input:

  [{"some": "some value"}, {"key": "value"}]

  Expected output:

  [{"key": "value"}]

  Actual output:

  []

• [ ] $['key'] Input:

  {"key": "value"}

  Expected output:

  ["value"]

  Error:

  parsing error: $['key']   :1:3 - 1:8 could not parse string: invalid syntax

• [ ] $['one','three'].key Input:

  {"one": {"key": "value"}, "two": {"k": "v"}, "three": {"some": "more", "key": "other value"}}

  Expected output:

  ["value", "other value"]

  Error:

  parsing error: $['one','three'].key   :1:3 - 1:8 could not parse string: invalid syntax

• [ ] $['two.some'] Input:

  {"one": {"key": "value"}, "two": {"some": "more", "key": "other value"}, "two.some": "42"}

  Expected output:

  ["42"]

  Error:

  parsing error: $['two.some']  :1:3 - 1:13 could not parse string: invalid syntax

• [ ] $['special:"chars'] Input:

  {"special:\"chars": "value"}

  Expected output:

  ["value"]

  Error:

  parsing error: $['special:"chars']    :1:3 - 1:19 could not parse string: invalid syntax

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