YAML Test Matrix

Test #PW8X - Anchors on Empty Scalars

YAML

- &a
- a
-
  &a : a
  b: &b
  &c : &a
-
  ? &d
  ? &e
  : &a

Expected Events

+STR
+DOC
+SEQ
=VAL &a :
=VAL :a
+MAP
=VAL &a :
=VAL :a
=VAL :b
=VAL &b :
=VAL &c :
=VAL &a :
-MAP
+MAP
=VAL &d :
=VAL :
=VAL &e :
=VAL &a :
-MAP
-SEQ
-DOC
-STR

Expected JSON

[
null,
"a",
{
"" : null,
"b" : null
},
{
"" : null
}
]

cpp-event

 ok

java-event

 ok

java-json

 json_diff
[
   null,
   "a",
   {},
   {}
]

js-yaml-json

 error
YAMLException: bad indentation of a sequence entry at line 4, column 6:
      &a : a
         ^
    at generateError (/node_modules/js-yaml/lib/js-yaml/loader.js:165:10)
    at throwError (/node_modules/js-yaml/lib/js-yaml/loader.js:171:9)
    at readBlockSequence (/node_modules/js-yaml/lib/js-yaml/loader.js:935:7)
    at composeNode (/node_modules/js-yaml/lib/js-yaml/loader.js:1331:12)
    at readDocument (/node_modules/js-yaml/lib/js-yaml/loader.js:1492:3)
    at loadDocuments (/node_modules/js-yaml/lib/js-yaml/loader.js:1548:5)
    at Object.loadAll (/node_modules/js-yaml/lib/js-yaml/loader.js:1556:19)
    at Object.<anonymous> (/bin/js-yaml-json:6:6)
    at Object.<anonymous> (/bin/js-yaml-json:3:1)
    at Module._compile (module.js:410:26)
    at Object.exports.run (/usr/local/lib/node_modules/coffee-script/lib/coffee-script/coffee-script.js:173:23)
    at compileScript (/usr/local/lib/node_modules/coffee-script/lib/coffee-script/command.js:224:29)
    at compilePath (/usr/local/lib/node_modules/coffee-script/lib/coffee-script/command.js:174:14)
    at Object.exports.run (/usr/local/lib/node_modules/coffee-script/lib/coffee-script/command.js:98:20)
    at Object.<anonymous> (/usr/local/lib/node_modules/coffee-script/bin/coffee:7:41)
    at Module._compile (module.js:410:26)
    at Object.Module._extensions..js (module.js:417:10)
    at Module.load (module.js:344:32)
    at Function.Module._load (module.js:301:12)
    at Function.Module.runMain (module.js:442:10)
    at startup (node.js:136:18)
    at node.js:966:3

libyaml-event

 ok

luajit-json

 json_diff
[
   "",
   "a",
   {
      "" : "",
      "b" : ""
   },
   {
      "" : ""
   }
]

nimyaml-event

 ok

perl5-pegex-event

 error
Maximum parsing rules reached (1000)

perl5-pm-json

 error
Use of uninitialized value $key in string at /lib/perl5/YAML/Loader.pm line 331, <> line 1.
YAML Error: Invalid element in map
   Code: YAML_LOAD_ERR_BAD_MAP_ELEMENT
   Line: 9
   Document: 1
 at /lib/perl5/YAML/Loader.pm line 350.

perl5-pm-pl

 error
Use of uninitialized value $key in string at /lib/perl5/YAML/Loader.pm line 331, <> line 1.
YAML Error: Invalid element in map
   Code: YAML_LOAD_ERR_BAD_MAP_ELEMENT
   Line: 9
   Document: 1
 at /lib/perl5/YAML/Loader.pm line 350.

perl5-pp-event

 ok

perl5-pp-json

 json_ok

perl5-pp-pl

 n/a
[
  undef,
  'a',
  {
    '' => undef,
    'b' => undef
  },
  {
    '' => undef
  }
]

perl5-syck-json

 error
Syck parser (line 4, column 6): syntax error at /lib/perl5/x86_64-linux-gnu-thread-multi/YAML/Syck.pm line 75, <> line 1.

perl5-syck-pl

 error
Syck parser (line 4, column 6): syntax error at /lib/perl5/x86_64-linux-gnu-thread-multi/YAML/Syck.pm line 75, <> line 1.

perl5-tiny-json

 error
YAML::Tiny does not support a feature in line '&a' at /bin/perl5-tiny-json line 14.

perl5-tiny-pl

 error
YAML::Tiny does not support a feature in line '&a' at /bin/perl5-tiny-pl line 13.

perl5-xs-json

 json_ok

perl5-xs-pl

 n/a
[
  undef,
  'a',
  {
    '' => undef,
    'b' => undef
  },
  {
    '' => undef
  }
]
Use of uninitialized value in subroutine entry at /bin/perl5-xs-pl line 13, <> line 1.
Use of uninitialized value in subroutine entry at /bin/perl5-xs-pl line 13, <> line 1.
Use of uninitialized value in subroutine entry at /bin/perl5-xs-pl line 13, <> line 1.
Use of uninitialized value in subroutine entry at /bin/perl5-xs-pl line 13, <> line 1.

pyyaml-event

 ok

pyyaml-json

 error
Traceback (most recent call last):
  File "/bin/pyyaml-json", line 8, in <module>
    for doc in yaml.load_all(sys.stdin.read()):
  File "/lib/python2.7/site-packages/yaml/__init__.py", line 90, in load_all
    yield loader.get_data()
  File "/lib/python2.7/site-packages/yaml/constructor.py", line 33, in get_data
    return self.construct_document(self.get_node())
  File "/lib/python2.7/site-packages/yaml/composer.py", line 27, in get_node
    return self.compose_document()
  File "/lib/python2.7/site-packages/yaml/composer.py", line 55, in compose_document
    node = self.compose_node(None, None)
  File "/lib/python2.7/site-packages/yaml/composer.py", line 82, in compose_node
    node = self.compose_sequence_node(anchor)
  File "/lib/python2.7/site-packages/yaml/composer.py", line 111, in compose_sequence_node
    node.value.append(self.compose_node(node, index))
  File "/lib/python2.7/site-packages/yaml/composer.py", line 84, in compose_node
    node = self.compose_mapping_node(anchor)
  File "/lib/python2.7/site-packages/yaml/composer.py", line 129, in compose_mapping_node
    item_key = self.compose_node(node, None)
  File "/lib/python2.7/site-packages/yaml/composer.py", line 77, in compose_node
    "second occurrence", event.start_mark)
yaml.composer.ComposerError: found duplicate anchor 'a'; first occurrence
  in "<string>", line 1, column 3:
    - &a
      ^
second occurrence
  in "<string>", line 4, column 3:
      &a : a
      ^

pyyaml-py

 error
Traceback (most recent call last):
  File "/bin/pyyaml-py", line 7, in <module>
    for doc in yaml.load_all(sys.stdin.read()):
  File "/lib/python2.7/site-packages/yaml/__init__.py", line 90, in load_all
    yield loader.get_data()
  File "/lib/python2.7/site-packages/yaml/constructor.py", line 33, in get_data
    return self.construct_document(self.get_node())
  File "/lib/python2.7/site-packages/yaml/composer.py", line 27, in get_node
    return self.compose_document()
  File "/lib/python2.7/site-packages/yaml/composer.py", line 55, in compose_document
    node = self.compose_node(None, None)
  File "/lib/python2.7/site-packages/yaml/composer.py", line 82, in compose_node
    node = self.compose_sequence_node(anchor)
  File "/lib/python2.7/site-packages/yaml/composer.py", line 111, in compose_sequence_node
    node.value.append(self.compose_node(node, index))
  File "/lib/python2.7/site-packages/yaml/composer.py", line 84, in compose_node
    node = self.compose_mapping_node(anchor)
  File "/lib/python2.7/site-packages/yaml/composer.py", line 129, in compose_mapping_node
    item_key = self.compose_node(node, None)
  File "/lib/python2.7/site-packages/yaml/composer.py", line 77, in compose_node
    "second occurrence", event.start_mark)
yaml.composer.ComposerError: found duplicate anchor 'a'; first occurrence
  in "<string>", line 1, column 3:
    - &a
      ^
second occurrence
  in "<string>", line 4, column 3:
      &a : a
      ^

ruamel-event

 ok

ruamel-json

 json_diff
[
   null,
   "a",
   {
      "b" : null,
      "null" : null
   },
   {
      "null" : null
   }
]

ruamel-py

 n/a
[None, 'a', {None: None, 'b': None}, {None: None}]
/usr/local/lib/python2.7/dist-packages/ruamel/yaml/composer.py:120: ReusedAnchorWarning: 
found duplicate anchor u'a'
first occurence   in "<byte string>", line 1, column 3:
    - &a
      ^ (line: 1)
second occurence   in "<byte string>", line 4, column 3:
      &a : a
      ^ (line: 4)
  warnings.warn(ws, ReusedAnchorWarning)
/usr/local/lib/python2.7/dist-packages/ruamel/yaml/composer.py:120: ReusedAnchorWarning: 
found duplicate anchor u'a'
first occurence   in "<byte string>", line 4, column 3:
      &a : a
      ^ (line: 4)
second occurence   in "<byte string>", line 6, column 8:
      &c : &a
           ^ (line: 6)
  warnings.warn(ws, ReusedAnchorWarning)
/usr/local/lib/python2.7/dist-packages/ruamel/yaml/composer.py:120: ReusedAnchorWarning: 
found duplicate anchor u'a'
first occurence   in "<byte string>", line 6, column 8:
      &c : &a
           ^ (line: 6)
second occurence   in "<byte string>", line 10, column 5:
      : &a
        ^ (line: 10)
  warnings.warn(ws, ReusedAnchorWarning)

ruby-json

 json_ok