Getting a "Bad indendation in FLOWMAP" error

[pplu]

Hi,

I found this piece of CloudFormation that YAML::PP 0.026 doesn't parse, although Cloudformation considers it valid YAML:

Resources:
  Resource1:
    Properties:
      Item: {
        'accountId': { 'N': '15' },
        'username': { 'S': 'user' }
      }
  Resource2:
    Type: "XXX"

You get the following error:

Line      : 7
Column    : 7
Message   : Bad indendation in FLOWMAP
Where     : local/lib/perl5/YAML/PP/Parser.pm line 197
YAML      : "}"
  at local/lib/perl5/YAML/PP/Loader.pm line 94.

bug? not implemented yet? Or is there any parser / schema option that I'm not aware of?

[perlpunk]

That is invalid YAML, but I'm aware that several parsers accept it.
Even the closing } is below the Item entry, and per definition any content below a certain key must be indented with at least one space.

See also https://www.yaml.info/learn/flowstyle.html

[pplu]

That is invalid YAML. but I'm aware that several parsers accept it.

Wow! One space fixed it all :)

It's kind of difficult to distinguish between invalid-but-accepted YAML and not-supported-yet-in-yaml-pp YAML. Sorry for overreporting.

Is there any way of getting YAML::PP to parse it via something in: https://metacpan.org/source/JLMARTIN/Cfn-0.13/lib/Cfn/YAML/Schema.pm

Would you accept a patch that enables the activation of such a "feature"?

[perlpunk]

That has nothing to do with the Schema.
This would have to be implemented in the Lexer, and you can have a look at it if you want.