encoding/yaml: add support for YAML tags via @yaml(tag) attribute#4199
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jonas-meyer wants to merge 1 commit intocue-lang:masterfrom
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encoding/yaml: add support for YAML tags via @yaml(tag) attribute#4199jonas-meyer wants to merge 1 commit intocue-lang:masterfrom
jonas-meyer wants to merge 1 commit intocue-lang:masterfrom
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This adds support for encoding YAML tags by specifying them in `@yaml(tag="...")` attributes on CUE fields. The tag value is applied to the encoded YAML node. This enables generating YAML files that use custom tags, such as those required by authentik blueprints (!KeyOf, !Env, !Find, etc.) and other YAML-based tools that rely on tags for special processing. Tags can be applied to scalars, sequences, and mappings. The implementation extracts tags from field attributes in the AST and sets them on the corresponding yaml.Node during encoding. Fixes cue-lang#2316 Signed-off-by: Jonas Meyer-Ohle <19151471+jonas-meyer@users.noreply.github.com>
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Pull request overview
This PR adds support for YAML tags in CUE's YAML encoding by allowing users to specify tags via @yaml(tag="...") field attributes. This enables generating YAML files that use custom tags required by tools like authentik blueprints and other YAML-based systems that rely on tags for special processing.
- Implements
extractYAMLTag()function to parse@yaml(tag="...")attributes from field declarations - Applies extracted tags to the encoded YAML nodes in
encodeDecls() - Adds comprehensive test coverage for scalars, sequences, mappings, and edge cases
Reviewed changes
Copilot reviewed 2 out of 2 changed files in this pull request and generated no comments.
| File | Description |
|---|---|
| internal/encoding/yaml/encode.go | Adds extractYAMLTag() function and integrates tag extraction into the field encoding process |
| internal/encoding/yaml/encode_test.go | Adds 6 test cases covering tag usage on scalars, sequences, mappings, mixed scenarios, verbatim tags, and attributes without tags |
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little bump. this would be great in order to use the atmos terraform generation/orchestration tool with cue. |
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This adds support for encoding YAML tags by specifying them in @yaml(tag="...") attributes on CUE fields. The tag value is applied to the encoded YAML node.
This enables generating YAML files that use custom tags, such as those required by authentik blueprints (!KeyOf, !Env, !Find, etc.) and other YAML-based tools that rely on tags for special processing.
Tags can be applied to scalars, sequences, and mappings. The implementation extracts tags from field attributes in the AST and sets them on the corresponding yaml.Node during encoding.
Fixes #2316