lib/rdoc/stats.rb
# frozen_string_literal: true
##
# RDoc statistics collector which prints a summary and report of a project's
# documentation totals.
class RDoc::Stats
include RDoc::Text
##
# Output level for the coverage report
attr_reader :coverage_level
##
# Count of files parsed during parsing
attr_reader :files_so_far
##
# Total number of files found
attr_reader :num_files
##
# Creates a new Stats that will have +num_files+. +verbosity+ defaults to 1
# which will create an RDoc::Stats::Normal outputter.
def initialize store, num_files, verbosity = 1
@num_files = num_files
@store = store
@coverage_level = 0
@doc_items = nil
@files_so_far = 0
@fully_documented = false
@num_params = 0
@percent_doc = nil
@start = Time.now
@undoc_params = 0
@display = case verbosity
when 0 then Quiet.new num_files
when 1 then Normal.new num_files
else Verbose.new num_files
end
end
##
# Records the parsing of an alias +as+.
def add_alias as
@display.print_alias as
end
##
# Records the parsing of an attribute +attribute+
def add_attribute attribute
@display.print_attribute attribute
end
##
# Records the parsing of a class +klass+
def add_class klass
@display.print_class klass
end
##
# Records the parsing of +constant+
def add_constant constant
@display.print_constant constant
end
##
# Records the parsing of +file+
def add_file(file)
@files_so_far += 1
@display.print_file @files_so_far, file
end
##
# Records the parsing of +method+
def add_method(method)
@display.print_method method
end
##
# Records the parsing of a module +mod+
def add_module(mod)
@display.print_module mod
end
##
# Call this to mark the beginning of parsing for display purposes
def begin_adding
@display.begin_adding
end
##
# Calculates documentation totals and percentages for classes, modules,
# constants, attributes and methods.
def calculate
return if @doc_items
ucm = @store.unique_classes_and_modules
classes = @store.unique_classes.reject { |cm| cm.full_name == 'Object' }
constants = []
ucm.each { |cm| constants.concat cm.constants }
methods = []
ucm.each { |cm| methods.concat cm.method_list }
attributes = []
ucm.each { |cm| attributes.concat cm.attributes }
@num_attributes, @undoc_attributes = doc_stats attributes
@num_classes, @undoc_classes = doc_stats classes
@num_constants, @undoc_constants = doc_stats constants
@num_methods, @undoc_methods = doc_stats methods
@num_modules, @undoc_modules = doc_stats @store.unique_modules
@num_items =
@num_attributes +
@num_classes +
@num_constants +
@num_methods +
@num_modules +
@num_params
@undoc_items =
@undoc_attributes +
@undoc_classes +
@undoc_constants +
@undoc_methods +
@undoc_modules +
@undoc_params
@doc_items = @num_items - @undoc_items
end
##
# Sets coverage report level. Accepted values are:
#
# false or nil:: No report
# 0:: Classes, modules, constants, attributes, methods
# 1:: Level 0 + method parameters
def coverage_level= level
level = -1 unless level
@coverage_level = level
end
##
# Returns the length and number of undocumented items in +collection+.
def doc_stats collection
visible = collection.select { |item| item.display? }
[visible.length, visible.count { |item| not item.documented? }]
end
##
# Call this to mark the end of parsing for display purposes
def done_adding
@display.done_adding
end
##
# The documentation status of this project. +true+ when 100%, +false+ when
# less than 100% and +nil+ when unknown.
#
# Set by calling #calculate
def fully_documented?
@fully_documented
end
##
# A report that says you did a great job!
def great_job
report = RDoc::Markup::Document.new
report << RDoc::Markup::Paragraph.new('100% documentation!')
report << RDoc::Markup::Paragraph.new('Great Job!')
report
end
##
# Calculates the percentage of items documented.
def percent_doc
return @percent_doc if @percent_doc
@fully_documented = (@num_items - @doc_items) == 0
@percent_doc = @doc_items.to_f / @num_items * 100 if @num_items.nonzero?
@percent_doc ||= 0
@percent_doc
end
##
# Returns a report on which items are not documented
def report
if @coverage_level > 0 then
extend RDoc::Text
end
if @coverage_level.zero? then
calculate
return great_job if @num_items == @doc_items
end
ucm = @store.unique_classes_and_modules
report = RDoc::Markup::Document.new
report << RDoc::Markup::Paragraph.new('The following items are not documented:')
report << RDoc::Markup::BlankLine.new
ucm.sort.each do |cm|
body = report_class_module(cm) {
[
report_constants(cm),
report_attributes(cm),
report_methods(cm),
].compact
}
report << body if body
end
if @coverage_level > 0 then
calculate
return great_job if @num_items == @doc_items
end
report
end
##
# Returns a report on undocumented attributes in ClassModule +cm+
def report_attributes cm
return if cm.attributes.empty?
report = []
cm.each_attribute do |attr|
next if attr.documented?
line = attr.line ? ":#{attr.line}" : nil
report << " #{attr.definition} :#{attr.name} # in file #{attr.file.full_name}#{line}\n"
report << "\n"
end
report
end
##
# Returns a report on undocumented items in ClassModule +cm+
def report_class_module cm
return if cm.fully_documented? and @coverage_level.zero?
return unless cm.display?
report = RDoc::Markup::Document.new
if cm.in_files.empty? then
report << RDoc::Markup::Paragraph.new("#{cm.definition} is referenced but empty.")
report << RDoc::Markup::Paragraph.new("It probably came from another project. I'm sorry I'm holding it against you.")
return report
elsif cm.documented? then
documented = true
klass = RDoc::Markup::Verbatim.new("#{cm.definition} # is documented\n")
else
report << RDoc::Markup::Paragraph.new('In files:')
list = RDoc::Markup::List.new :BULLET
cm.in_files.each do |file|
para = RDoc::Markup::Paragraph.new file.full_name
list << RDoc::Markup::ListItem.new(nil, para)
end
report << list
report << RDoc::Markup::BlankLine.new
klass = RDoc::Markup::Verbatim.new("#{cm.definition}\n")
end
klass << "\n"
body = yield.flatten # HACK remove #flatten
if body.empty? then
return if documented
klass.parts.pop
else
klass.parts.concat body
end
klass << "end\n"
report << klass
report
end
##
# Returns a report on undocumented constants in ClassModule +cm+
def report_constants cm
return if cm.constants.empty?
report = []
cm.each_constant do |constant|
# TODO constant aliases are listed in the summary but not reported
# figure out what to do here
next if constant.documented? || constant.is_alias_for
line = constant.line ? ":#{constant.line}" : line
report << " # in file #{constant.file.full_name}#{line}\n"
report << " #{constant.name} = nil\n"
report << "\n"
end
report
end
##
# Returns a report on undocumented methods in ClassModule +cm+
def report_methods cm
return if cm.method_list.empty?
report = []
cm.each_method do |method|
next if method.documented? and @coverage_level.zero?
if @coverage_level > 0 then
params, undoc = undoc_params method
@num_params += params
unless undoc.empty? then
@undoc_params += undoc.length
undoc = undoc.map do |param| "+#{param}+" end
param_report = " # #{undoc.join ', '} is not documented\n"
end
end
next if method.documented? and not param_report
line = method.line ? ":#{method.line}" : nil
scope = method.singleton ? 'self.' : nil
report << " # in file #{method.file.full_name}#{line}\n"
report << param_report if param_report
report << " def #{scope}#{method.name}#{method.params}; end\n"
report << "\n"
end
report
end
##
# Returns a summary of the collected statistics.
def summary
calculate
num_width = [@num_files, @num_items].max.to_s.length
undoc_width = [
@undoc_attributes,
@undoc_classes,
@undoc_constants,
@undoc_items,
@undoc_methods,
@undoc_modules,
@undoc_params,
].max.to_s.length
report = RDoc::Markup::Verbatim.new
report << "Files: %*d\n" % [num_width, @num_files]
report << "\n"
report << "Classes: %*d (%*d undocumented)\n" % [
num_width, @num_classes, undoc_width, @undoc_classes]
report << "Modules: %*d (%*d undocumented)\n" % [
num_width, @num_modules, undoc_width, @undoc_modules]
report << "Constants: %*d (%*d undocumented)\n" % [
num_width, @num_constants, undoc_width, @undoc_constants]
report << "Attributes: %*d (%*d undocumented)\n" % [
num_width, @num_attributes, undoc_width, @undoc_attributes]
report << "Methods: %*d (%*d undocumented)\n" % [
num_width, @num_methods, undoc_width, @undoc_methods]
report << "Parameters: %*d (%*d undocumented)\n" % [
num_width, @num_params, undoc_width, @undoc_params] if
@coverage_level > 0
report << "\n"
report << "Total: %*d (%*d undocumented)\n" % [
num_width, @num_items, undoc_width, @undoc_items]
report << "%6.2f%% documented\n" % percent_doc
report << "\n"
report << "Elapsed: %0.1fs\n" % (Time.now - @start)
RDoc::Markup::Document.new report
end
##
# Determines which parameters in +method+ were not documented. Returns a
# total parameter count and an Array of undocumented methods.
def undoc_params method
@formatter ||= RDoc::Markup::ToTtOnly.new
params = method.param_list
params = params.map { |param| param.gsub(/^\*\*?/, '') }
return 0, [] if params.empty?
document = parse method.comment
tts = document.accept @formatter
undoc = params - tts
[params.length, undoc]
end
autoload :Quiet, "#{__dir__}/stats/quiet"
autoload :Normal, "#{__dir__}/stats/normal"
autoload :Verbose, "#{__dir__}/stats/verbose"
end