Sha256: f86892ed438899a13d2e1a20ab7be42874aa574ce6278ac559cbfde30ff46854
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Versions: 4
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Contents
# encoding: utf-8 module Rubocop module Cop module Style # This cop enforces the use of a single string formatting utility. # Valid options include Kernel#format, Kernel#sprintf and String#%. # # The detection of String#% cannot be implemented in a reliable # manner for all cases, so only two scenarios are considered - # if the first argument is a string literal and if the second # argument is an array literal. class FormatString < Cop include ConfigurableEnforcedStyle def on_send(node) add_offense(node, :selector) if offending_node?(node) end private def offending_node?(node) case style when :format sprintf?(node) || percent?(node) when :sprintf format?(node) || percent?(node) when :percent format?(node) || sprintf?(node) end end def format?(node) command?(:format, node) end def sprintf?(node) command?(:sprintf, node) end def percent?(node) receiver_node, method_name, *arg_nodes = *node method_name == :% && ([:str, :dstr].include?(receiver_node.type) || arg_nodes[0].type == :array) end def message(node) _receiver_node, method_name, *_arg_nodes = *node preferred = if style == :percent 'String#%' else style end method_name = 'String#%' if method_name == :% "Favor `#{preferred}` over `#{method_name}`." end end end end end
Version data entries
4 entries across 4 versions & 1 rubygems