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Build # 6acef475-5d65-416d-b549-a144aadd13bd

Build Type

Pull #1272

circleci

Committed by omry

Commit Message

Add support for typing.Literal annotations

Supersedes #1228

Implements LiteralNode to support Literal type hints as an alternative
to Enum in structured configs. Validates value and type equality using
type identity (not isinstance) to keep bool and int distinct.

- Add LiteralNode class with validation for Literal types
- Support Literal inside containers: List[Literal[...]], Dict[K, Literal[...]]
- Fix ordering bug where Literal[1, True] would incorrectly reject True
  depending on element position, by replacing the two-pass check with a
  single-pass type-and-value loop
- Add test data classes (LiteralConfig, LiteralContainers) for dataclasses and attrs
- Add tests for validation, equality (including cross-ref_type and cross-type),
  bool/int cross-matching, and YAML round-trip
- Document Literal types in structured_config.rst

Fixes #422
Closes #865

Co-Authored-By: jordan-schneider <jordan-schneider@users.noreply.github.com>
Co-Authored-By: rachtsingh <rachtsingh@users.noreply.github.com>
Co-Authored-By: Omry Yadan <omry@yadan.net>

Pull Request Pull Request #1272: Add support for typing.Literal annotations

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