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Contents
module Skeptic
module Rules
class MethodsPerClass
DESCRIPTION = 'Limit the number of methods per class'
include SexpVisitor
def initialize(limit)
@methods = Hash.new { |hash, key| hash[key] = [] }
@limit = limit
end
def apply_to(code, tokens, tree)
visit tree
self
end
def methods_in(class_name)
@methods[class_name].length
end
def violations
violators = @methods.keys.select { |name| @methods[name].length > @limit }
violators.map do |class_name|
method_names = @methods[class_name].map { |name| "##{name}" }
count = method_names.length
"#{class_name} has #{count} methods: #{method_names.join(', ')}"
end
end
def name
"Number of methods per class (#@limit)"
end
private
on :def do |name, params, body|
method_name = extract_name(name)
class_name = env[:class]
@methods[class_name] << method_name
visit params
visit body
end
on :defs do |target, _, name, params, body|
target_name = extract_name(target)
method_name = extract_name(name)
class_name = env[:class]
target_name = class_name if target_name == "self"
@methods[target_name] << method_name
visit params
visit body
end
on :class do |name, parents, body|
env.push :class => qualified_class_name(name)
visit parents if parents
visit body
env.pop
end
on :module do |name, body|
env.push :class => qualified_class_name(name)
visit body
env.pop
end
def qualified_class_name(name)
[env[:class], extract_name(name)].compact.join('::')
end
end
end
end
Version data entries
12 entries across 12 versions & 1 rubygems