Support def self.method_name singleton method in inline parser#2935
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soutaro merged 1 commit intoMay 12, 2026
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Previously, the inline parser emitted a diagnostic error for any method definition with a receiver (`def self.foo`, `def obj.foo`, etc.) and skipped processing it entirely. This meant that singleton methods defined with `def self.method_name` could not have their type annotations recognized. This change adds support for `def self.method_name` by: - Checking `Prism::SelfNode` specifically in `visit_def_node` and only rejecting non-self receivers (e.g., `def obj.foo`) - Adding a `kind` attribute (`:instance` | `:singleton`) to `DefMember` to distinguish between instance and singleton methods - Propagating `kind` through `Environment#resolve_type_names` - Routing singleton `DefMember`s to `build_singleton` in `MethodBuilder` All existing inline annotation formats (`#:`, `# @rbs`, `# @RBS param:`) work with singleton methods as well.
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Previously, the inline parser emitted a diagnostic error for any method definition with a receiver (
def self.foo,def obj.foo, etc.) and skipped processing it entirely. This meant that singleton methods defined withdef self.method_namecould not have their type annotations recognized.This change adds support for
def self.method_nameby:Prism::SelfNodespecifically invisit_def_nodeand only rejecting non-self receivers (e.g.,def obj.foo)kindattribute (:instance|:singleton) toDefMemberto distinguish between instance and singleton methodskindthroughEnvironment#resolve_type_namesDefMembers tobuild_singletoninMethodBuilderAll existing inline annotation formats (
#:,# @rbs,# @rbs param:) work with singleton methods as well.In addition
Could you also add the appropriate milestone to this PR? I do not have permission to set milestones from the GitHub UI. If this PR does not need one, please add the
no-milestonelabel instead.