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Contents
# frozen_string_literal: true
require_relative 'base_detector'
module Reek
module SmellDetectors
#
# A variant on LongParameterList that checks the number of items
# passed to a block by a +yield+ call.
#
# See {file:docs/Long-Yield-List.md} for details.
class LongYieldList < BaseDetector
# The name of the config field that sets the maximum number of
# parameters permitted in any method or block.
MAX_ALLOWED_PARAMS_KEY = 'max_params'
DEFAULT_MAX_ALLOWED_PARAMS = 3
def self.default_config
super.merge MAX_ALLOWED_PARAMS_KEY => DEFAULT_MAX_ALLOWED_PARAMS
end
#
# Checks the number of parameters in the given scope.
#
# @return [Array<SmellWarning>]
#
# @quality :reek:DuplicateMethodCall { max_calls: 2 }
def sniff
context.local_nodes(:yield).select do |yield_node|
yield_node.args.length > max_allowed_params
end.map do |yield_node|
count = yield_node.args.length
smell_warning(
lines: [yield_node.line],
message: "yields #{count} parameters",
parameters: { count: count })
end
end
private
def max_allowed_params
value(MAX_ALLOWED_PARAMS_KEY, context)
end
end
end
end
Version data entries
31 entries across 29 versions & 2 rubygems