# YAML Test Matrix

[?x]

+STR
+DOC
+SEQ []
=VAL :?x
-SEQ
-DOC
-STR

[
  "?x"
]

c-libyaml-event

 diff
Got Events:

+STR
+DOC
+SEQ []
+MAP {}
=VAL :x
=VAL :
-MAP
-SEQ
-DOC
-STR

dotnet-yamldotnet-event

 diff
Minimal Events:

+STR
+DOC
+SEQ
=VAL :?x
-SEQ
-DOC
-STR

Got Events:

+STR
+DOC
+SEQ
+MAP
=VAL :x
=VAL :
-MAP
-SEQ
-DOC
-STR

java-snakeyaml-event

 diff
Got Events:

+STR
+DOC
+SEQ []
+MAP {}
=VAL :x
=VAL :
-MAP
-SEQ
-DOC
-STR

py-pyyaml-event

 diff
Got Events:

+STR
+DOC
+SEQ []
+MAP {}
=VAL :x
=VAL :
-MAP
-SEQ
-DOC
-STR

py-ruamel-event

 diff
Got Events:

+STR
+DOC
+SEQ []
+MAP {}
=VAL :x
=VAL :
-MAP
-SEQ
-DOC
-STR

[
  {
    "x": null
  }
]

[
  {
    "x": null
  }
]

[
  {}
]

[
  {}
]

[
  {
    "x": {}
  }
]

[
  {
    "x": null
  }
]

[
  {
    "x": null
  }
]

[
  {
    "x": null
  }
]

[
  {
    "x": null
  }
]

[
  {
    "x": null
  }
]

+STR
Exception:
yaml-cpp: error at line 1, column 2: unknown token

+STR
+DOC
+SEQ []
-SEQ
Parsing error near byte offset Pos {posByteOffset = 1, posCharOffset = 1, posLine = 1, posColumn = 1} (Unexpected '?')

hsyaml-parser: user error (Unexpected '?')

YAML Error: Expected separator '---'
   Code: YAML_PARSE_ERR_NO_SEPARATOR
   Line: 1
   Document: 2
 at /perl5/lib/perl5/YAML/Loader.pm line 88.

YAML Error: Expected separator '---'
   Code: YAML_PARSE_ERR_NO_SEPARATOR
   Line: 1
   Document: 2
 at /perl5/lib/perl5/YAML/Loader.pm line 88.

Line  Col Char Byte Token|Content
   1    0    0    0 +DOC |
   1    0    0    0 +NODE|
   1    0    0    0 +SEQ |
   1    0    0    0 =SYNX|[
   1    1    1    1 -SEQ |
   1    1    1    1 -NODE|
   1    1    1    1 =ERR |Unexpected.'?'
   1    1    1    1 =REST|?x]
   1    4    4    4 =REST|\x0a
   2    0    5    5 -DOC |

[
  '?x'
]

[
  {
    'x' => undef
  }
]

[
  '?x'
]

[
  {
    'x' => undef
  }
]

[{'x': None}]

[{'x': None}]

[
  "?x".Str,
]

YAML::Tiny failed to classify line '[?x]' at /yaml/bin/perl-tiny-json line 12.

YAML::Tiny failed to classify line '[?x]' at /yaml/bin/perl-tiny-perl line 15.