yq/pkg
Copilot 2927a28283
TOML encoder: prefer readable table sections over inline tables (#2649)
* Initial plan

* Fix TOML encoder to prefer readable table sections over inline tables

When converting from YAML/JSON to TOML, the encoder now always uses
readable TOML table section syntax ([section]) instead of compact inline
hash table syntax (key = { ... }), which better matches TOML's goal as
a human-focused configuration format.

Changes:
- decoder_toml.go: Mark inline TOML tables with FlowStyle so round-trips
  can be distinguished from YAML flow mappings
- encoder_toml.go:
  - encodeTopLevelEntry: use FlowStyle check instead of EncodeSeparate to
    decide inline vs table section (all block mappings now become tables)
  - encodeSeparateMapping: count FlowStyle children as attributes; use
    recursive encodeSeparateMapping for nested non-flow mappings
  - encodeMappingBodyWithPath: emit non-flow child mappings as sub-table
    sections instead of inline tables
- toml_test.go: add encode (YAML→TOML) test scenarios, update roundtrip
  expectations for inline tables (now expanded to table sections)

Agent-Logs-Url: https://github.com/mikefarah/yq/sessions/4824a219-6d5e-42e7-bca1-a8a277bf8c6a

Co-authored-by: mikefarah <1151925+mikefarah@users.noreply.github.com>

* Fix TOML roundtrip: use TomlInline flag instead of FlowStyle to preserve inline tables

FlowStyle affected YAML decode output (causing inline tables to appear as
YAML flow mappings). Replace it with a new TOML-specific TomlInline bool
on CandidateNode that:
- Is set by the TOML decoder for inline tables (not FlowStyle)
- Is copied by UpdateAttributesFrom so it survives DeeplyAssign merges
- Is checked by the TOML encoder alongside FlowStyle (for YAML flow maps)
- Has no effect on the YAML encoder, preserving existing TOML→YAML output

TOML roundtrip tests are restored to their original expected values (inline
tables stay inline, table sections stay as sections).

Agent-Logs-Url: https://github.com/mikefarah/yq/sessions/f59bdf62-6d16-4664-991b-38eb87c9d81c

Co-authored-by: mikefarah <1151925+mikefarah@users.noreply.github.com>

* Refactor EncodeSeparate+TomlInline into a single EncodeHint enum

Agent-Logs-Url: https://github.com/mikefarah/yq/sessions/24db9a8f-601d-4ccf-ada7-129ed3226bb6

Co-authored-by: mikefarah <1151925+mikefarah@users.noreply.github.com>

* Fix stale comment in hasStructuralChildren

Agent-Logs-Url: https://github.com/mikefarah/yq/sessions/24db9a8f-601d-4ccf-ada7-129ed3226bb6

Co-authored-by: mikefarah <1151925+mikefarah@users.noreply.github.com>

* Remove unused hasStructuralChildren method from tomlEncoder

Agent-Logs-Url: https://github.com/mikefarah/yq/sessions/2c234b77-28e9-4995-ba6f-9d213ec551a0

Co-authored-by: mikefarah <1151925+mikefarah@users.noreply.github.com>

---------

Co-authored-by: copilot-swe-agent[bot] <198982749+Copilot@users.noreply.github.com>
Co-authored-by: mikefarah <1151925+mikefarah@users.noreply.github.com>
2026-04-12 18:36:43 +10:00
..
yqlib TOML encoder: prefer readable table sections over inline tables (#2649) 2026-04-12 18:36:43 +10:00