poka.sh

 Docs

RBS

Generated by scripts/gen-format-pages.py from docs/data/format-metadata/, FILE_FORMATS.csv and docs/formats-master.csv. Do not edit by hand: change the source, then run the script.

Ruby RBS Preview.

At a glance
Purpose A Ruby type signature file in RBS: classes, modules, interfaces and method types.
Extensions .rbs
Poka parser poka-rbs
Viewer poka-metadata-card-viewer
Depth tier Metadata card (see Depth tiers)
Breadth tier B4 Summary (see Breadth tiers)

How much Poka reads

B4 Summary. The container and metadata are read and summarised (counts, properties, structure), but the main content is not rendered.

Confidence: medium (the reviewer read the code). Basis: Reviewed 2026-10-26: read parsers/poka-rbs/src/main.rs (302 lines) and plugin.json in full. The crate has no unit tests and no tests/samples.rs, and the corpus has no .rbs sample, so the tier rests on reading the code. Covers .rbs. The output is a metadata card of counts found by matching text line by line: classes, modules, interfaces, type aliases, generic classes, def and def self., overloads, block-taking methods, attr_reader, attr_writer and attr_accessor, include, extend and prepend, constants and comment lines. Judgement: B4, because the structure is summarised but the source itself is never shown.

What Poka does not read

  • The source text is not shown: the card carries only counts and a few sample names, with no code view or highlighting
  • Constructs are found by matching text line by line, not by parsing, so multi-line declarations, nested or indented definitions and keywords inside strings or comments can be miscounted
  • Counts of named items stop where their name list is capped (constants at 64), so a larger file under-reports them
  • Files over 64 MiB are cut to the first 64 MiB (the card says so)
  • Text that is not UTF-8 is decoded with replacement characters; no other encoding is tried
  • Method type signatures are not shown

Libraries

Libraries Poka uses or has assessed for this format, with the status, licence and language the registry records.

  • ruby-rbs (candidate; BSD-2-Clause; Rust; https://docs.rs/ruby-rbs) — Official Rust bindings in the ruby/rbs repo over the RBS C parser (ruby-rbs-sys); v0.3.0.
  • rbs (candidate; licence unconfirmed; Ruby; https://github.com/ruby/rbs) — Official RBS gem and parser; repo page showed BSDL and COPYING files but no licence name. Parser written in C per release notes seen in search.

Sources

  • parsers/poka-rbs/src/main.rs
  • parsers/poka-rbs/plugin.json