--- &test-NKF9
Title: Empty keys in block and flow mapping
Tags: [ empty-key, mapping ]
---
key: value
: empty key
---
{
key: value, : empty key
}
---
# empty key and value
:
---
# empty key and value
{ : }
+STR
+DOC ---
+MAP
=VAL :key
=VAL :value
=VAL :
=VAL :empty key
-MAP
-DOC
+DOC ---
+MAP {}
=VAL :key
=VAL :value
=VAL :
=VAL :empty key
-MAP
-DOC
+DOC ---
+MAP
=VAL :
=VAL :
-MAP
-DOC
+DOC ---
+MAP {}
=VAL :
=VAL :
-MAP
-DOC
-STR
error
Exception in thread "main" while parsing a block mapping
in reader, line 2, column 1:
key: value
^
expected <block end>, but found ':'
in reader, line 3, column 1:
: empty key
^
at org.snakeyaml.engine.v2.parser.ParserImpl$ParseBlockMappingKey.produce(ParserImpl.java:689)
at org.snakeyaml.engine.v2.parser.ParserImpl.lambda$produce$0(ParserImpl.java:185)
at java.util.Optional.ifPresent(Optional.java:159)
at org.snakeyaml.engine.v2.parser.ParserImpl.produce(ParserImpl.java:185)
at org.snakeyaml.engine.v2.parser.ParserImpl.hasNext(ParserImpl.java:210)
at org.yaml.editor.SnakeEngine2Events.yamlToEvents(SnakeEngine2Events.java:15)
at org.yaml.editor.SnakeEngine2Events.main(SnakeEngine2Events.java:23)
error
Syck parser (line 3, column 1): syntax error at /perl5/lib/perl5/x86_64-linux-thread-multi/YAML/Syck.pm line 60, <> line 1.
error
YAML Error: Expected separator '---'
Code: YAML_PARSE_ERR_NO_SEPARATOR
Line: 5
Document: 3
at /perl5/lib/perl5/YAML/Loader.pm line 88.
error
Couldn't parse YAML
in sub load-yamls at /raku/sources/44795C7AB0F35700F4CA9C3E2CC5C924EE4C608F (YAMLish) line 959
in block <unit> at /yaml/bin/raku-yamlish-raku line 6
na
{
"key": "value",
"": "empty key"
}
{
"key": "value",
"": "empty key"
}
{
"": null
}
{
"": null
}
na
Unhandled exception. YamlDotNet.Core.YamlException: (Line: 2, Col: 1, Idx: 4) - (Line: 2, Col: 1, Idx: 4): Exception during deserialization
---> System.ArgumentNullException: Value cannot be null. (Parameter 'key')
at System.Collections.Generic.Dictionary`2.System.Collections.IDictionary.set_Item(Object key, Object value)
at YamlDotNet.Serialization.NodeDeserializers.DictionaryNodeDeserializer.DeserializeHelper(Type tKey, Type tValue, IParser parser, Func`3 nestedObjectDeserializer, IDictionary result)
at YamlDotNet.Serialization.NodeDeserializers.DictionaryNodeDeserializer.YamlDotNet.Serialization.INodeDeserializer.Deserialize(IParser parser, Type expectedType, Func`3 nestedObjectDeserializer, Object& value)
at YamlDotNet.Serialization.ValueDeserializers.NodeValueDeserializer.DeserializeValue(IParser parser, Type expectedType, SerializerState state, IValueDeserializer nestedObjectDeserializer)
--- End of inner exception stack trace ---
at YamlDotNet.Serialization.ValueDeserializers.NodeValueDeserializer.DeserializeValue(IParser parser, Type expectedType, SerializerState state, IValueDeserializer nestedObjectDeserializer)
at YamlDotNet.Serialization.ValueDeserializers.AliasValueDeserializer.DeserializeValue(IParser parser, Type expectedType, SerializerState state, IValueDeserializer nestedObjectDeserializer)
at YamlDotNet.Serialization.Deserializer.Deserialize(IParser parser, Type type)
at YamlDotNet.Serialization.Deserializer.Deserialize(TextReader input, Type type)
at YamlDotNet.Serialization.Deserializer.Deserialize(TextReader input)
at Program.Main(String[] commandLineArguments)
Aborted (core dumped)
na
yaml: line 2: did not find expected key
na
{"":"empty key","key":"value"}
{"":"empty key","key":"value"}
{"":null}
{"":null}
na
Line Col Char Byte Token|Content
1 0 0 0 +DOC |
1 0 0 0 =HEAD|---
1 3 3 3 +NODE|
1 3 3 3 =EOL |\x0a
2 0 4 4 +MAP |
2 0 4 4 +PAIR|
2 0 4 4 +NODE|
2 0 4 4 +VAL |
2 0 4 4 =TEXT|key
2 3 7 7 -VAL |
2 3 7 7 -NODE|
2 3 7 7 =SYNX|:
2 4 8 8 =WSPC|.
2 5 9 9 +NODE|
2 5 9 9 +VAL |
2 5 9 9 =TEXT|value
2 10 14 14 -VAL |
2 10 14 14 -NODE|
2 10 14 14 =EOL |\x0a
3 0 15 15 -PAIR|
3 0 15 15 +PAIR|
3 0 15 15 +NODE|
3 0 15 15 +VAL |
3 0 15 15 -VAL |
3 0 15 15 -NODE|
3 0 15 15 =SYNX|:
3 1 16 16 =WSPC|.
3 2 17 17 +NODE|
3 2 17 17 +VAL |
3 2 17 17 =TEXT|empty.key
3 11 26 26 -VAL |
3 11 26 26 -NODE|
3 11 26 26 =EOL |\x0a
4 0 27 27 -PAIR|
4 0 27 27 -MAP |
4 0 27 27 -NODE|
4 0 27 27 -DOC |
4 0 27 27 +DOC |
4 0 27 27 =HEAD|---
4 3 30 30 =EOL |\x0a
5 0 31 31 +NODE|
5 0 31 31 +MAP |
5 0 31 31 =SYNX|{
5 1 32 32 =EOL |\x0a
6 0 33 33 =WSPC|.
6 1 34 34 +PAIR|
6 1 34 34 +NODE|
6 1 34 34 +VAL |
6 1 34 34 =TEXT|key
6 4 37 37 -VAL |
6 4 37 37 -NODE|
6 4 37 37 =SYNX|:
6 5 38 38 =WSPC|.
6 6 39 39 +NODE|
6 6 39 39 +VAL |
6 6 39 39 =TEXT|value
6 11 44 44 -VAL |
6 11 44 44 -NODE|
6 11 44 44 -PAIR|
6 11 44 44 =SYNX|,
6 12 45 45 =WSPC|.
6 13 46 46 +PAIR|
6 13 46 46 +NODE|
6 13 46 46 +VAL |
6 13 46 46 -VAL |
6 13 46 46 -NODE|
6 13 46 46 =SYNX|:
6 14 47 47 =WSPC|.
6 15 48 48 +NODE|
6 15 48 48 +VAL |
6 15 48 48 =TEXT|empty.key
6 24 57 57 -VAL |
6 24 57 57 -NODE|
6 24 57 57 -PAIR|
6 24 57 57 =EOL |\x0a
7 0 58 58 =SYNX|}
7 1 59 59 -MAP |
7 1 59 59 -NODE|
7 1 59 59 =EOL |\x0a
8 0 60 60 -DOC |
8 0 60 60 +DOC |
8 0 60 60 =HEAD|---
8 3 63 63 +NODE|
8 3 63 63 =EOL |\x0a
9 0 64 64 +COMM|
9 0 64 64 =SYNX|#
9 1 65 65 =META|.empty.key.and.value
9 21 85 85 -COMM|
9 21 85 85 =EOL |\x0a
10 0 86 86 +MAP |
10 0 86 86 +PAIR|
10 0 86 86 +NODE|
10 0 86 86 +VAL |
10 0 86 86 -VAL |
10 0 86 86 -NODE|
10 0 86 86 =SYNX|:
10 1 87 87 +NODE|
10 1 87 87 +VAL |
10 1 87 87 -VAL |
10 1 87 87 -NODE|
10 1 87 87 =EOL |\x0a
11 0 88 88 -PAIR|
11 0 88 88 -MAP |
11 0 88 88 -NODE|
11 0 88 88 -DOC |
11 0 88 88 +DOC |
11 0 88 88 =HEAD|---
11 3 91 91 =EOL |\x0a
12 0 92 92 +COMM|
12 0 92 92 =SYNX|#
12 1 93 93 =META|.empty.key.and.value
12 21 113 113 -COMM|
12 21 113 113 =EOL |\x0a
13 0 114 114 +NODE|
13 0 114 114 +MAP |
13 0 114 114 =SYNX|{
13 1 115 115 =WSPC|.
13 2 116 116 +PAIR|
13 2 116 116 +NODE|
13 2 116 116 +VAL |
13 2 116 116 -VAL |
13 2 116 116 -NODE|
13 2 116 116 =SYNX|:
13 3 117 117 +NODE|
13 3 117 117 +VAL |
13 3 117 117 -VAL |
13 3 117 117 -NODE|
13 3 117 117 -PAIR|
13 3 117 117 =WSPC|.
13 4 118 118 =SYNX|}
13 5 119 119 -MAP |
13 5 119 119 -NODE|
13 5 119 119 =EOL |\x0a
14 0 120 120 -DOC |
na
Exception in thread "main" while parsing a block mapping
in 'reader', line 2, column 1:
key: value
^
expected <block end>, but found ':'
in 'reader', line 3, column 1:
: empty key
^
at org.yaml.snakeyaml.parser.ParserImpl$ParseBlockMappingKey.produce(ParserImpl.java:660)
at org.yaml.snakeyaml.parser.ParserImpl.peekEvent(ParserImpl.java:166)
at org.yaml.snakeyaml.comments.CommentEventsCollector$1.peek(CommentEventsCollector.java:59)
at org.yaml.snakeyaml.comments.CommentEventsCollector$1.peek(CommentEventsCollector.java:45)
at org.yaml.snakeyaml.comments.CommentEventsCollector.collectEvents(CommentEventsCollector.java:140)
at org.yaml.snakeyaml.comments.CommentEventsCollector.collectEvents(CommentEventsCollector.java:119)
at org.yaml.snakeyaml.composer.Composer.composeScalarNode(Composer.java:217)
at org.yaml.snakeyaml.composer.Composer.composeNode(Composer.java:187)
at org.yaml.snakeyaml.composer.Composer.composeValueNode(Composer.java:317)
at org.yaml.snakeyaml.composer.Composer.composeMappingChildren(Composer.java:308)
at org.yaml.snakeyaml.composer.Composer.composeMappingNode(Composer.java:289)
at org.yaml.snakeyaml.composer.Composer.composeNode(Composer.java:191)
at org.yaml.snakeyaml.composer.Composer.getNode(Composer.java:116)
at org.yaml.snakeyaml.constructor.BaseConstructor.getData(BaseConstructor.java:135)
at org.yaml.snakeyaml.Yaml$1.next(Yaml.java:514)
at org.yaml.editor.Snake2Json.yamlToJson(Snake2Json.java:20)
at org.yaml.editor.Snake2Json.main(Snake2Json.java:27)
na
Exception in thread "main" while parsing a block mapping
in 'reader', line 2, column 1:
key: value
^
expected <block end>, but found ':'
in 'reader', line 3, column 1:
: empty key
^
at org.yaml.snakeyaml.parser.ParserImpl$ParseBlockMappingKey.produce(ParserImpl.java:660)
at org.yaml.snakeyaml.parser.ParserImpl.peekEvent(ParserImpl.java:166)
at org.yaml.snakeyaml.comments.CommentEventsCollector$1.peek(CommentEventsCollector.java:59)
at org.yaml.snakeyaml.comments.CommentEventsCollector$1.peek(CommentEventsCollector.java:45)
at org.yaml.snakeyaml.comments.CommentEventsCollector.collectEvents(CommentEventsCollector.java:140)
at org.yaml.snakeyaml.comments.CommentEventsCollector.collectEvents(CommentEventsCollector.java:119)
at org.yaml.snakeyaml.composer.Composer.composeScalarNode(Composer.java:217)
at org.yaml.snakeyaml.composer.Composer.composeNode(Composer.java:187)
at org.yaml.snakeyaml.composer.Composer.composeValueNode(Composer.java:317)
at org.yaml.snakeyaml.composer.Composer.composeMappingChildren(Composer.java:308)
at org.yaml.snakeyaml.composer.Composer.composeMappingNode(Composer.java:289)
at org.yaml.snakeyaml.composer.Composer.composeNode(Composer.java:191)
at org.yaml.snakeyaml.composer.Composer.getNode(Composer.java:116)
at org.yaml.snakeyaml.constructor.BaseConstructor.getData(BaseConstructor.java:135)
at org.yaml.snakeyaml.Yaml$1.next(Yaml.java:514)
at org.yaml.editor.Snake2Json.yamlToJson(Snake2Json.java:20)
at org.yaml.editor.Snake2Json.main(Snake2Json.java:27)
na
/node/node_modules/js-yaml/lib/loader.js:187
throw generateError(state, message);
^
YAMLException: incomplete explicit mapping pair; a key node is missed; or followed by a non-tabulated empty line (3:1)
1 | ---
2 | key: value
3 | : empty key
-----^
4 | ---
5 | {
at generateError (/node/node_modules/js-yaml/lib/loader.js:183:10)
at throwError (/node/node_modules/js-yaml/lib/loader.js:187:9)
at readBlockMapping (/node/node_modules/js-yaml/lib/loader.js:1090:9)
at composeNode (/node/node_modules/js-yaml/lib/loader.js:1441:12)
at readDocument (/node/node_modules/js-yaml/lib/loader.js:1625:3)
at loadDocuments (/node/node_modules/js-yaml/lib/loader.js:1688:5)
at Object.loadAll (/node/node_modules/js-yaml/lib/loader.js:1701:19)
at Object.<anonymous> (/yaml/bin/js-jsyaml-json:7:13)
at Module._compile (internal/modules/cjs/loader.js:778:30)
at Object.Module._extensions..js (internal/modules/cjs/loader.js:789:10)
na
{
"key": "value",
"": "empty key"
}
{
"key": "value",
"": "empty key"
}
{
"": null
}
{
"": null
}
na
luajit: 2:6: did not find expected key
stack traceback:
[C]: in function 'error'
/usr/local/share/lua/5.1/lyaml/init.lua:306: in function 'error'
/usr/local/share/lua/5.1/lyaml/init.lua:325: in function 'parse'
/usr/local/share/lua/5.1/lyaml/init.lua:443: in function 'load_node'
/usr/local/share/lua/5.1/lyaml/init.lua:340: in function 'load_node'
/usr/local/share/lua/5.1/lyaml/init.lua:497: in function 'load'
/yaml/bin/lua-lyaml-json:6: in main chunk
[C]: at 0x559063822f97
na
{
"" : "empty key",
"key" : "value"
}
{
"" : "empty key",
"key" : "value"
}
{
"" : null
}
{
"" : null
}
na
{
'' => 'empty key',
'key' => 'value'
}
{
'' => 'empty key',
'key' => 'value'
}
{
'' => undef
}
{
'' => undef
}
na
YAML::PP::LibYAML Error: The problem:
did not find expected key
was found at , line: 3, column: 1
while parsing a block mapping at line: 2, column: 1
na
Syck parser (line 3, column 1): syntax error at /perl5/lib/perl5/x86_64-linux-thread-multi/YAML/Syck.pm line 60, <> line 1.
na
YAML::Tiny failed to classify line ': empty key' at /yaml/bin/perl-tiny-json line 12.
na
YAML::XS::Load Error: The problem:
did not find expected key
was found at document: 1, line: 3, column: 1
while parsing a block mapping at line: 2, column: 1
na
YAML Error: Expected separator '---'
Code: YAML_PARSE_ERR_NO_SEPARATOR
Line: 5
Document: 3
at /perl5/lib/perl5/YAML/Loader.pm line 88.
na
Traceback (most recent call last):
File "/yaml/bin/py-pyyaml-json", line 19, in <module>
for doc in yaml.load_all(sys.stdin.read(), Loader=yaml.FullLoader):
File "/python/lib/python3.7/site-packages/yaml/__init__.py", line 93, in load_all
yield loader.get_data()
File "/python/lib/python3.7/site-packages/yaml/constructor.py", line 45, in get_data
return self.construct_document(self.get_node())
File "/python/lib/python3.7/site-packages/yaml/composer.py", line 27, in get_node
return self.compose_document()
File "/python/lib/python3.7/site-packages/yaml/composer.py", line 55, in compose_document
node = self.compose_node(None, None)
File "/python/lib/python3.7/site-packages/yaml/composer.py", line 84, in compose_node
node = self.compose_mapping_node(anchor)
File "/python/lib/python3.7/site-packages/yaml/composer.py", line 127, in compose_mapping_node
while not self.check_event(MappingEndEvent):
File "/python/lib/python3.7/site-packages/yaml/parser.py", line 98, in check_event
self.current_event = self.state()
File "/python/lib/python3.7/site-packages/yaml/parser.py", line 439, in parse_block_mapping_key
"expected <block end>, but found %r" % token.id, token.start_mark)
yaml.parser.ParserError: while parsing a block mapping
in "<unicode string>", line 2, column 1:
key: value
^
expected <block end>, but found ':'
in "<unicode string>", line 3, column 1:
: empty key
^
na
Error json.dumps: <class 'TypeError'>
Traceback (most recent call last):
File "/yaml/bin/py-ruamel-json", line 21, in <module>
print(json.dumps(doc, sort_keys=True, skipkeys=True, indent=2))
File "/usr/lib/python3.7/json/__init__.py", line 238, in dumps
**kw).encode(obj)
File "/usr/lib/python3.7/json/encoder.py", line 201, in encode
chunks = list(chunks)
File "/usr/lib/python3.7/json/encoder.py", line 431, in _iterencode
yield from _iterencode_dict(o, _current_indent_level)
File "/usr/lib/python3.7/json/encoder.py", line 353, in _iterencode_dict
items = sorted(dct.items(), key=lambda kv: kv[0])
TypeError: '<' not supported between instances of 'NoneType' and 'str'
na
{None: 'empty key', 'key': 'value'}
{None: 'empty key', 'key': 'value'}
{None: None}
{None: None}
na
Couldn't parse YAML
in sub load-yamls at /raku/sources/44795C7AB0F35700F4CA9C3E2CC5C924EE4C608F (YAMLish) line 959
in block <unit> at /yaml/bin/raku-yamlish-json line 6
na
/ruby/gems/psych/lib/psych.rb:459:in `parse': (<unknown>): did not find expected key while parsing a block mapping at line 2 column 1 (Psych::SyntaxError)
from /ruby/gems/psych/lib/psych.rb:459:in `parse_stream'
from /ruby/gems/psych/lib/psych.rb:565:in `load_stream'
from /yaml/bin/ruby-psych-json:6:in `<main>'
ni
+STR
+DOC ---
+MAP
=VAL :key
=VAL :value
Parse error: did not find expected key
ni
Exception in thread "main" while parsing a block mapping
in 'reader', line 2, column 1:
key: value
^
expected <block end>, but found ':'
in 'reader', line 3, column 1:
: empty key
^
at org.yaml.snakeyaml.parser.ParserImpl$ParseBlockMappingKey.produce(ParserImpl.java:660)
at org.yaml.snakeyaml.parser.ParserImpl.peekEvent(ParserImpl.java:166)
at org.yaml.snakeyaml.Yaml$3.hasNext(Yaml.java:677)
at org.yaml.editor.Snake2Events.yamlToEvents(Snake2Events.java:134)
at org.yaml.editor.Snake2Events.main(Snake2Events.java:142)
ni
YAML::PP::LibYAML Error: The problem:
did not find expected key
was found at , line: 3, column: 1
while parsing a block mapping at line: 2, column: 1
ni
YAML::Tiny failed to classify line ': empty key' at /yaml/bin/perl-tiny-perl line 15.
ni
YAML::XS::Load Error: The problem:
did not find expected key
was found at document: 1, line: 3, column: 1
while parsing a block mapping at line: 2, column: 1
ni
+STR
+DOC ---
+MAP
=VAL :key
=VAL :value
Traceback (most recent call last):
File "/yaml/bin/py-pyyaml-event", line 7, in <module>
for event in yaml.parse(sys.stdin.read()):
File "/python/lib/python3.7/site-packages/yaml/__init__.py", line 46, in parse
while loader.check_event():
File "/python/lib/python3.7/site-packages/yaml/parser.py", line 98, in check_event
self.current_event = self.state()
File "/python/lib/python3.7/site-packages/yaml/parser.py", line 439, in parse_block_mapping_key
"expected <block end>, but found %r" % token.id, token.start_mark)
yaml.parser.ParserError: while parsing a block mapping
in "<unicode string>", line 2, column 1:
key: value
^
expected <block end>, but found ':'
in "<unicode string>", line 3, column 1:
: empty key
^
ni
Traceback (most recent call last):
File "/yaml/bin/py-pyyaml-py", line 36, in <module>
for doc in yaml.load_all(sys.stdin.read(), Loader=yaml.FullLoader):
File "/python/lib/python3.7/site-packages/yaml/__init__.py", line 93, in load_all
yield loader.get_data()
File "/python/lib/python3.7/site-packages/yaml/constructor.py", line 45, in get_data
return self.construct_document(self.get_node())
File "/python/lib/python3.7/site-packages/yaml/composer.py", line 27, in get_node
return self.compose_document()
File "/python/lib/python3.7/site-packages/yaml/composer.py", line 55, in compose_document
node = self.compose_node(None, None)
File "/python/lib/python3.7/site-packages/yaml/composer.py", line 84, in compose_node
node = self.compose_mapping_node(anchor)
File "/python/lib/python3.7/site-packages/yaml/composer.py", line 127, in compose_mapping_node
while not self.check_event(MappingEndEvent):
File "/python/lib/python3.7/site-packages/yaml/parser.py", line 98, in check_event
self.current_event = self.state()
File "/python/lib/python3.7/site-packages/yaml/parser.py", line 439, in parse_block_mapping_key
"expected <block end>, but found %r" % token.id, token.start_mark)
yaml.parser.ParserError: while parsing a block mapping
in "<unicode string>", line 2, column 1:
key: value
^
expected <block end>, but found ':'
in "<unicode string>", line 3, column 1:
: empty key
^