Contents

module Steep
  module AST
    module Types
      class Tuple
        attr_reader :types
        attr_reader :location

        def initialize(types:, location: nil)
          @types = types
          @location = location
        end

        def ==(other)
          other.is_a?(Tuple) &&
            other.types == types
        end

        def hash
          self.class.hash ^ types.hash
        end

        alias eql? ==

        def subst(s)
          self.class.new(location: location,
                         types: types.map {|ty| ty.subst(s) })
        end

        def to_s
          "[#{types.join(", ")}]"
        end

        def free_variables()
          @fvs ||= each_child.with_object(Set[]) do |type, set| #$ Set[variable]
            set.merge(type.free_variables)
          end
        end

        include Helper::ChildrenLevel

        def each_child(&block)
          if block
            types.each(&block)
          else
            types.each
          end
        end

        def map_type(&block)
          Tuple.new(
            types: types.map(&block),
            location: location
          )
        end

        def level
          [0] + level_of_children(types)
        end

        def with_location(new_location)
          self.class.new(types: types, location: new_location)
        end
      end
    end
  end
end

Version data entries

5 entries across 5 versions & 1 rubygems

Version	Path
steep-1.8.0.dev.2	lib/steep/ast/types/tuple.rb
steep-1.8.0.dev.1	lib/steep/ast/types/tuple.rb
steep-1.7.1	lib/steep/ast/types/tuple.rb
steep-1.7.0	lib/steep/ast/types/tuple.rb
steep-1.7.0.dev.3	lib/steep/ast/types/tuple.rb