Support extend - #462
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TypeProf did not handle `extend`, so methods added via `extend M` were reported as "undefined method" and `extend` was missing from the dumped RBS. Implement it symmetrically to `include`: parse Ruby/RBS `extend`, resolve the extended module's instance methods as the receiver's singleton methods, and dump `extend` for class bodies (like `include`). Self-referential `extend` (e.g. `extend self`) is still unsupported.
Passing a class object where a module it extends is expected (e.g. `App` to a `(Helpers) -> untyped` parameter) was diagnosed as "wrong type of arguments", although `App.is_a?(Helpers)` holds in Ruby. Method resolution and narrowing already recognize `extend`, so only this typecheck was inconsistent.
The extend scenarios only covered adding `extend` in an editing session. The removal direction goes through a separate code path (`remove_extend_def` and the `@extended_modules` cleanup), which had no regression guard, unlike include's remove-included-module2.
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Thanks, merged! The symmetry with One thing I noticed while testing: module Foo
module Util
include Foo
def helper = "h"
end
extend Util
end
Foo.helperThe guard was already missing before this PR, but |
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TypeProf did not handle
extend, so methods added viaextend Mwere reported as "undefined method" andextendwas missing from the dumped RBS.Implement it symmetrically to
include: parse Ruby/RBSextend, resolve the extended module's instance methods as the receiver's singleton methods, and dumpextendfor class bodies (likeinclude).Self-referential
extend(e.g.extend self) is still unsupported.