lib/reek/context/method_context.rb
# frozen_string_literal: true
require_relative 'code_context'
module Reek
module Context
#
# A context wrapper for any method definition found in a syntax tree.
#
# @quality :reek:Attribute
class MethodContext < CodeContext
attr_accessor :visibility
attr_reader :refs
def initialize(exp, parent_exp)
@parent_exp = parent_exp
@visibility = :public
super(exp)
end
def references_self?
exp.depends_on_instance?
end
def uses_param?(param)
# :lvasgn catches:
#
# def foo(bar); bar += 1; end
#
# :lvar catches:
#
# def foo(bar); other(bar); end
# def foo(bar); tmp = other(bar); tmp[0]; end
#
local_nodes([:lvar, :lvasgn]).find { |node| node.var_name == param.name }
end
# @quality :reek:FeatureEnvy
def unused_params
exp.arguments.reject do |param|
param.anonymous_splat? ||
param.marked_unused? ||
uses_param?(param)
end
end
def uses_super_with_implicit_arguments?
(body = exp.body) && body.contains_nested_node?(:zsuper)
end
def default_assignments
@default_assignments ||=
exp.parameters.select(&:optional_argument?).map(&:children)
end
def method_context_class
self.class
end
def singleton_method?
false
end
def instance_method?
true
end
def apply_current_visibility(current_visibility)
self.visibility = current_visibility
end
def module_function?
visibility == :module_function
end
def non_public_visibility?
visibility != :public
end
def full_comment
own = super
return own unless own.empty?
return parent_exp.full_comment if parent_exp
''
end
private
attr_reader :parent_exp
end
end
end