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require 'rdoc'
##
# RDoc statistics collector which prints a summary and report of a project's
# documentation totals.
class RDoc::Stats
##
# 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 num_files, verbosity = 1
@files_so_far = 0
@num_files = num_files
@coverage_level = 0
@doc_items = nil
@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 = RDoc::TopLevel.unique_classes_and_modules
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 RDoc::TopLevel.unique_classes
@num_constants, @undoc_constants = doc_stats constants
@num_methods, @undoc_methods = doc_stats methods
@num_modules, @undoc_modules = doc_stats RDoc::TopLevel.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
[collection.length, collection.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 = []
report << '100% documentation!'
report << nil
report << 'Great Job!'
report.join "\n"
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
require 'rdoc/markup/to_tt_only'
require 'rdoc/generator/markup'
require 'rdoc/text'
extend RDoc::Text
end
report = []
if @coverage_level.zero? then
calculate
return great_job if @num_items == @doc_items
end
ucm = RDoc::TopLevel.unique_classes_and_modules
ucm.sort.each do |cm|
report << report_class_module(cm) {
[
report_constants(cm),
report_attributes(cm),
report_methods(cm),
].compact
}
end
if @coverage_level > 0 then
calculate
return great_job if @num_items == @doc_items
end
report.unshift nil
report.unshift 'The following items are not documented:'
report.join "\n"
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?
report << " #{attr.definition} :#{attr.name} " \
"# in file #{attr.file.full_name}"
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?
report = []
if cm.in_files.empty? then
report << "# #{cm.definition} is referenced but empty."
report << '#'
report << '# It probably came from another project. ' \
"I'm sorry I'm holding it against you."
report << nil
return report
elsif cm.documented? then
documented = true
report << "#{cm.definition} # is documented"
else
report << '# in files:'
cm.in_files.each do |file|
report << "# #{file.full_name}"
end
report << nil
report << "#{cm.definition}"
end
body = yield.flatten # HACK remove #flatten
return if body.empty? and documented
report << nil << body unless body.empty?
report << 'end'
report << nil
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
report << " # in file #{constant.file.full_name}"
report << " #{constant.name} = nil"
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"
end
end
next if method.documented? and not param_report
report << " # in file #{method.file.full_name}"
report << param_report if param_report
report << " def #{method.name}#{method.params}; end"
report << nil
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 = []
report << 'Files: %*d' % [num_width, @num_files]
report << nil
report << 'Classes: %*d (%*d undocumented)' % [
num_width, @num_classes, undoc_width, @undoc_classes]
report << 'Modules: %*d (%*d undocumented)' % [
num_width, @num_modules, undoc_width, @undoc_modules]
report << 'Constants: %*d (%*d undocumented)' % [
num_width, @num_constants, undoc_width, @undoc_constants]
report << 'Attributes: %*d (%*d undocumented)' % [
num_width, @num_attributes, undoc_width, @undoc_attributes]
report << 'Methods: %*d (%*d undocumented)' % [
num_width, @num_methods, undoc_width, @undoc_methods]
report << 'Parameters: %*d (%*d undocumented)' % [
num_width, @num_params, undoc_width, @undoc_params] if
@coverage_level > 0
report << nil
report << 'Total: %*d (%*d undocumented)' % [
num_width, @num_items, undoc_width, @undoc_items]
report << '%6.2f%% documented' % percent_doc
report << nil
report << 'Elapsed: %0.1fs' % (Time.now - @start)
report.join "\n"
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
return 0, [] if params.empty?
document = parse method.comment
tts = document.accept @formatter
undoc = params - tts
[params.length, undoc]
end
autoload :Quiet, 'rdoc/stats/quiet'
autoload :Normal, 'rdoc/stats/normal'
autoload :Verbose, 'rdoc/stats/verbose'
end