Add support for RawMessage, similar to json.RawMessage

[cpuguy83]

This adds a type that users can use to refer to raw data in the yaml for deferred decoding.

Closes #425

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Attention: Patch coverage is 46.66667% with 8 lines in your changes missing coverage. Please review.

Project coverage is 77.56%. Comparing base (abc7083) to head (e81dd30).

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Additional details and impacted files

@@            Coverage Diff             @@
##           master     #668      +/-   ##
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- Coverage   77.61%   77.56%   -0.06%     
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  Files          22       22              
  Lines        7953     7968      +15     
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+ Hits         6173     6180       +7     
- Misses       1362     1368       +6     
- Partials      418      420       +2     

[asmfreak]

I think you'd want to see this pr merged #642 . It implements an even more erganomic feature

[cpuguy83]

I think you'd want to see this pr merged #642 . It implements an even more erganomic feature

That is an elegant solution since it doesn't require re-parsing the data.

[goccy]

@cpuguy83 Thank you for your contribution !!

goccy/go-yaml provides a way to decode into ast.Node to defer evaluation, but adding yaml.RawMessage to handle raw byte slices while avoiding parsing costs sounds like a good idea. Actually, I was just about to implement this feature myself.
This also serves as an intuitive solution for those familiar with json.RawMessage.

On the other hand, goccy/go-yaml has the UseJSONUnmarshaler ( and UseJSONMarshaler ) option, which enables the use of UnmarshalJSON, allowing direct usage of json.RawMessage. Therefore, it would be beneficial to test the behavior when using json.RawMessage with this option enabled, as well as the behavior when using yaml.RawMessage.

• https://pkg.go.dev/github.com/goccy/go-yaml#UseJSONMarshaler
• https://pkg.go.dev/github.com/goccy/go-yaml#UseJSONUnmarshaler

Please add the test case the following.

• UseJSONUnmarshaler and json.RawMessage
• UseJSONUnmarshaler and yaml.RawMessage
• UseJSONMarshaler and json.RawMessage
• UseJSONMarshaler and yaml.RawMessage

[goccy]

@cpuguy83 Do you have time to respond to the point I reviewed ? If not, I will close this PR and support this myself.

[goccy]

@cpuguy83
I will wait until next week, and if there is no response, I will close this PR and handle this feature myself.