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module RBS
  module AST
    module Members
      class Base
      end

      class MethodDefinition < Base
        attr_reader :name
        attr_reader :kind
        attr_reader :types
        attr_reader :annotations
        attr_reader :location
        attr_reader :comment
        attr_reader :overload

        def initialize(name:, kind:, types:, annotations:, location:, comment:, overload:)
          @name = name
          @kind = kind
          @types = types
          @annotations = annotations
          @location = location
          @comment = comment
          @overload = overload ? true : false
        end

        def ==(other)
          other.is_a?(MethodDefinition) &&
            other.name == name &&
            other.kind == kind &&
            other.types == types &&
            other.overload == overload
        end

        alias eql? ==

        def hash
          self.class.hash ^ name.hash ^ kind.hash ^ types.hash ^ overload.hash
        end

        def instance?
          kind == :instance || kind == :singleton_instance
        end

        def singleton?
          kind == :singleton || kind == :singleton_instance
        end

        def overload?
          overload
        end

        def update(name: self.name, kind: self.kind, types: self.types, annotations: self.annotations, location: self.location, comment: self.comment, overload: self.overload)
          self.class.new(
            name: name,
            kind: kind,
            types: types,
            annotations: annotations,
            location: location,
            comment: comment,
            overload: overload
          )
        end

        def to_json(*a)
          {
            member: :method_definition,
            kind: kind,
            types: types,
            annotations: annotations,
            location: location,
            comment: comment,
            overload: overload
          }.to_json(*a)
        end
      end

      module Var
        attr_reader :name
        attr_reader :type
        attr_reader :location
        attr_reader :comment

        def initialize(name:, type:, location:, comment:)
          @name = name
          @type = type
          @location = location
          @comment = comment
        end

        def ==(other)
          other.is_a?(self.class) && other.name == name && other.type == type
        end

        alias eql? ==

        def hash
          self.class.hash ^ name.hash ^ type.hash
        end
      end

      class InstanceVariable < Base
        include Var

        def to_json(*a)
          {
            member: :instance_variable,
            name: name,
            type: type,
            location: location,
            comment: comment
          }.to_json(*a)
        end
      end

      class ClassInstanceVariable < Base
        include Var

        def to_json(*a)
          {
            member: :class_instance_variable,
            name: name,
            type: type,
            location: location,
            comment: comment
          }.to_json(*a)
        end
      end

      class ClassVariable < Base
        include Var

        def to_json(*a)
          {
            member: :class_variable,
            name: name,
            type: type,
            location: location,
            comment: comment
          }.to_json(*a)
        end
      end

      module Mixin
        attr_reader :name
        attr_reader :args
        attr_reader :annotations
        attr_reader :location
        attr_reader :comment

        def initialize(name:, args:, annotations:, location:, comment:)
          @name = name
          @args = args
          @annotations = annotations
          @location = location
          @comment = comment
        end

        def ==(other)
          other.is_a?(self.class) && other.name == name && other.args == args
        end

        def eql?(other)
          self == other
        end

        def hash
          self.class.hash ^ name.hash ^ args.hash
        end
      end

      class Include < Base
        include Mixin

        def to_json(*a)
          {
            member: :include,
            name: name,
            args: args,
            annotations: annotations,
            location: location,
            comment: comment
          }.to_json(*a)
        end
      end

      class Extend < Base
        include Mixin

        def to_json(*a)
          {
            member: :extend,
            name: name,
            args: args,
            annotations: annotations,
            location: location,
            comment: comment
          }.to_json(*a)
        end
      end

      class Prepend < Base
        include Mixin

        def to_json(*a)
          {
            member: :prepend,
            name: name,
            args: args,
            annotations: annotations,
            location: location,
            comment: comment
          }.to_json(*a)
        end
      end

      module Attribute
        attr_reader :name
        attr_reader :type
        attr_reader :kind
        attr_reader :ivar_name
        attr_reader :annotations
        attr_reader :location
        attr_reader :comment

        def initialize(name:, type:, ivar_name:, kind:, annotations:, location:, comment:)
          @name = name
          @type = type
          @ivar_name = ivar_name
          @annotations = annotations
          @location = location
          @comment = comment
          @kind = kind
        end

        def ==(other)
          other.is_a?(self.class) &&
            other.name == name &&
            other.type == type &&
            other.ivar_name == ivar_name &&
            other.kind == kind
        end

        alias eql? ==

        def hash
          self.class.hash ^ name.hash ^ type.hash ^ ivar_name.hash ^ kind.hash
        end
      end

      class AttrReader < Base
        include Attribute

        def to_json(*a)
          {
            member: :attr_reader,
            name: name,
            type: type,
            ivar_name: ivar_name,
            kind: kind,
            annotations: annotations,
            location: location,
            comment: comment
          }.to_json(*a)
        end
      end

      class AttrAccessor < Base
        include Attribute

        def to_json(*a)
          {
            member: :attr_accessor,
            name: name,
            type: type,
            ivar_name: ivar_name,
            kind: kind,
            annotations: annotations,
            location: location,
            comment: comment
          }.to_json(*a)
        end
      end

      class AttrWriter < Base
        include Attribute

        def to_json(*a)
          {
            member: :attr_writer,
            name: name,
            type: type,
            ivar_name: ivar_name,
            kind: kind,
            annotations: annotations,
            location: location,
            comment: comment
          }.to_json(*a)
        end
      end

      module LocationOnly
        attr_reader :location

        def initialize(location:)
          @location = location
        end

        def ==(other)
          other.is_a?(self.class)
        end

        alias eql? ==

        def hash
          self.class.hash
        end
      end

      class Public < Base
        include LocationOnly

        def to_json(*a)
          { member: :public, location: location }.to_json(*a)
        end
      end

      class Private < Base
        include LocationOnly

        def to_json(*a)
          { member: :private, location: location }.to_json(*a)
        end
      end

      class Alias < Base
        attr_reader :new_name
        attr_reader :old_name
        attr_reader :kind
        attr_reader :annotations
        attr_reader :location
        attr_reader :comment

        def initialize(new_name:, old_name:, kind:, annotations:, location:, comment:)
          @new_name = new_name
          @old_name = old_name
          @kind = kind
          @annotations = annotations
          @location = location
          @comment = comment
        end

        def ==(other)
          other.is_a?(self.class) &&
            other.new_name == new_name &&
            other.old_name == old_name &&
            other.kind == kind
        end

        alias eql? ==

        def hash
          self.class.hash ^ new_name.hash ^ old_name.hash ^ kind.hash
        end

        def to_json(*a)
          {
            member: :alias,
            new_name: new_name,
            old_name: old_name,
            kind: kind,
            annotations: annotations,
            location: location,
            comment: comment
          }.to_json(*a)
        end

        def instance?
          kind == :instance
        end

        def singleton?
          kind == :singleton
        end
      end
    end
  end
end