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Semantic_Versioning

Semantic Versioning for the Ada language

Implements the 2.0 specification found at http://semver.org/

Types

Three types are provided:

  • Semantic_Versioning.Version, which stores a single semantic version (e.g., "1.0.2-beta+build0bdf3").

  • Semantic_Versioning.Basic.Version_Set, which stores a single version restriction over the whole set of versions (e.g., "~1.2"), or a list of AND (&) restrictions (e.g., "^1.0 & /=1.1").

  • Semantic_Versioning.Extended.Version_Set, which stores a general subset expressed with combinations of AND (&) and OR (|) logical operators. As in Ada, both cannot be mixed at the same level but can be combined with parentheses, e.g., "(≥7 & ≤9) | ≥2018".

Limitations

  1. Wildcard version sets (1.*) are not yet supported, but for a single * which means "any version".

  2. The special interpretation of caret and tilde for pre-1 versions that exists in some implementations is not applied, so they retain their usual meaning (compatibility within major/minor numbers). According to the Semver 2.0 spec, pre-1 releases do not offer any compatibility guarantees.

Unicode

By default, relational operators are accepted as plain ASCII sequences (<=, >=, /=) and as Unicode-encoded characters (≤, ≥, ≠). Unicode alternatives can be disabled in calls that accept textual input or produce corresponding output.

Usage

The public specifications are relatively small and intuitive. Check semantic_versioning-demo.adb for examples of use.