maybejustjames / yaml Goto Github PK

Hello,

It seems like the library ignores duplicated keys silently

root:
  item1:
    name: Item1
  item1:
    name: Item 2

and it seems like cause Dict.fromList is used on the list without duplication check. Is it expected behavior?
It feels for me that it should produce an error in such cases. Or am I wrong?
Thanks

it seems the parser converts multiline string to simple string, e.g.

description: |
  Some information

will be saved internally as

description: | Some description

My assumption is that it should be like

description: |\n  Some description

Anchors and references are documented in the spec here.

Given the input:

 [ '  hello  world  ' : 3 ]

I expect the parser to produce:

Ast.List_ [ Ast.Record_ (Dict.fromList [("  hello  world  ", Ast.Int_ 3)])]

• https://github.com/yaml/yaml-test-suite/

An overview of completeness in comparison to elm/json would be great!

Another case that, perhaps, can be improved https://ellie-app.com/k5NYB5sL7zDa1

If there is a list of records, each record will be rendered at a new line:

It seems like the following looks better:

The input:

"aaa: aaa"

causes a Parser error:

Err "TODO deadEndsToString"

but should produce:

Record_ (Dict.fromList [("aaa",String_ "aaa")])

Input:

-

Expected to decode with list null but instead Expected list, got: \"-\"

From the YAML documentation:

Normally, YAML insists the “:” mapping value indicator be separated from the value by white space.
A benefit of this restriction is that the “:” character can be used inside plain scalars, as long as it is
not followed by white space. This allows for unquoted URLs and timestamps. It is also a potential
source for confusion as “a:1” is a plain scalar and not a key: value pair.

Failing example:

Yaml.fromString Yaml.string "a:b"

Expected result

"a:b"

Actual result

Expected string, got: { a: \"b\" }

Thanks @ypyl

Reference: #25 (comment)

This causes the comment to be parsed as part of the next element.

"""[ aaa,# A comment
     bbb, # a dumb comment
     ccc
   ]"""

is parsed as:

List_ [String_ "aaa",String_ "# A comment\n           bbb",String_ "ccc"]

but should be parsed as:

List_ [String_ "aaa",String_ "bbb",String_ "ccc"]

Input: ""

If I use Yaml.Decoder.list Yaml.Decoder.int I expect to get an empty list, instead I get Expected list, got: Null

Given the YAML:

::

I expect the parser to produce:

Ast.Record_ (Dict.fromList [(":", Ast.Null_)])

It seems like the library only put empty line for such cases:

It seems that it is better to use inline type of dict or record in such cases, like:

What do you think?

With the encoder:

import Yaml.Encode exposing (toString, record)
toString 2 (record [("name", record [])])

name:{}

but it should be:

name: {}

space after the colon. See here.

Originally posted by @ypyl in #28 (comment)

If I use Yaml.Decode.value there is no way to Encode the resulting Value.

E.g.

Yaml.fromString "0" Yaml.string

Produces this as an error message:

Expected string

A more useful message would be something like:

Expected string, got: 0 (int)