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Original file line number | Diff line number | Diff line change |
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# typed: strict | ||
# frozen_string_literal: true | ||
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module RBI | ||
module Rewriters | ||
class AttrToMethods < Visitor | ||
extend T::Sig | ||
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sig { override.params(node: T.nilable(Node)).void } | ||
def visit(node) | ||
case node | ||
when Tree | ||
visit_all(node.nodes) | ||
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when Attr | ||
new_methods = node.convert_to_methods | ||
replace(node, with: new_methods) | ||
end | ||
end | ||
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private | ||
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sig { params(node: Node, with: T::Array[Node]).void } | ||
def replace(node, with:) | ||
tree = node.parent_tree | ||
raise unless tree | ||
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with.each { |node| tree << node } | ||
node.detach | ||
end | ||
end | ||
end | ||
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class Tree | ||
extend T::Sig | ||
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sig { void } | ||
def replace_attributes_with_methods! | ||
visitor = Rewriters::AttrToMethods.new | ||
visitor.visit(self) | ||
end | ||
end | ||
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class Attr | ||
private | ||
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sig(:final) { returns([T.nilable(Sig), T.nilable(String)]) } | ||
def parse_sig | ||
raise "Attributes cannot have more than 1 sig" if 1 < sigs.count | ||
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sig = sigs.first | ||
return [nil, nil] unless sig | ||
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attribute_type = case self | ||
when AttrReader, AttrAccessor then sig.return_type | ||
when AttrWriter then sig.params.first&.type | ||
end | ||
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[sig, attribute_type] | ||
end | ||
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sig do | ||
params( | ||
name: String, | ||
sig: T.nilable(Sig), | ||
visibility: Visibility, | ||
loc: T.nilable(Loc), | ||
comments: T::Array[Comment], | ||
).returns(Method) | ||
end | ||
def create_getter_method(name, sig, visibility, loc, comments) | ||
Method.new( | ||
name, | ||
params: [], | ||
visibility: visibility, | ||
sigs: sig ? [sig] : [], | ||
loc: loc, | ||
comments: comments, | ||
) | ||
end | ||
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sig do | ||
params( | ||
name: String, | ||
sig: T.nilable(Sig), | ||
attribute_type: T.nilable(String), | ||
visibility: Visibility, | ||
loc: T.nilable(Loc), | ||
comments: T::Array[Comment], | ||
).returns(Method) | ||
end | ||
def create_setter_method(name, sig, attribute_type, visibility, loc, comments) # rubocop:disable Metrics/ParameterLists | ||
sig = if sig # Modify the original sig to correct the name, and remove the return type | ||
params = attribute_type ? [SigParam.new(name, attribute_type)] : [] | ||
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Sig.new( | ||
params: params, | ||
return_type: "void", | ||
is_abstract: sig.is_abstract, | ||
is_override: sig.is_override, | ||
is_overridable: sig.is_overridable, | ||
is_final: sig.is_final, | ||
type_params: sig.type_params, | ||
checked: sig.checked, | ||
loc: sig.loc, | ||
) | ||
end | ||
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Method.new( | ||
"#{name}=", | ||
params: [ReqParam.new(name)], | ||
visibility: visibility, | ||
sigs: sig ? [sig] : [], | ||
loc: loc, | ||
comments: comments, | ||
) | ||
end | ||
end | ||
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class AttrAccessor | ||
sig { override.returns(T::Array[Method]) } | ||
def convert_to_methods | ||
sig, attribute_type = parse_sig | ||
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names.flat_map do |name| | ||
[ | ||
create_getter_method(name.to_s, sig, visibility, loc, comments), | ||
create_setter_method(name.to_s, sig, attribute_type, visibility, loc, comments), | ||
] | ||
end | ||
end | ||
end | ||
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class AttrReader | ||
sig { override.returns(T::Array[Method]) } | ||
def convert_to_methods | ||
sig, _ = parse_sig | ||
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names.map { |name| create_getter_method(name.to_s, sig, visibility, loc, comments) } | ||
end | ||
end | ||
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class AttrWriter | ||
sig { override.returns(T::Array[Method]) } | ||
def convert_to_methods | ||
sig, attribute_type = parse_sig | ||
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names.map { |name| create_setter_method(name.to_s, sig, attribute_type, visibility, loc, comments) } | ||
end | ||
end | ||
end |
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