##
# ClassModule is the base class for objects representing either a class or a
# module.
class RDoc::ClassModule < RDoc::Context
##
# 1::
# RDoc 3.7
# * Added visibility, singleton and file to attributes
# * Added file to constants
# * Added file to includes
# * Added file to methods
# 2::
# RDoc 3.13
# * Added extends
# 3::
# RDoc 4.0
# * Added sections
# * Added in_files
# * Added parent name
# * Complete Constant dump
MARSHAL_VERSION = 3 # :nodoc:
##
# Constants that are aliases for this class or module
attr_accessor :constant_aliases
##
# Comment and the location it came from. Use #add_comment to add comments
attr_accessor :comment_location
attr_accessor :diagram # :nodoc:
##
# Class or module this constant is an alias for
attr_accessor :is_alias_for
##
# Return a RDoc::ClassModule of class +class_type+ that is a copy
# of module +module+. Used to promote modules to classes.
#--
# TODO move to RDoc::NormalClass (I think)
def self.from_module class_type, mod
klass = class_type.new mod.name
mod.comment_location.each do |comment, location|
klass.add_comment comment, location
end
klass.parent = mod.parent
klass.section = mod.section
klass.viewer = mod.viewer
klass.attributes.concat mod.attributes
klass.method_list.concat mod.method_list
klass.aliases.concat mod.aliases
klass.external_aliases.concat mod.external_aliases
klass.constants.concat mod.constants
klass.includes.concat mod.includes
klass.extends.concat mod.extends
klass.methods_hash.update mod.methods_hash
klass.constants_hash.update mod.constants_hash
klass.current_section = mod.current_section
klass.in_files.concat mod.in_files
klass.sections.concat mod.sections
klass.unmatched_alias_lists = mod.unmatched_alias_lists
klass.current_section = mod.current_section
klass.visibility = mod.visibility
klass.classes_hash.update mod.classes_hash
klass.modules_hash.update mod.modules_hash
klass.metadata.update mod.metadata
klass.document_self = mod.received_nodoc ? nil : mod.document_self
klass.document_children = mod.document_children
klass.force_documentation = mod.force_documentation
klass.done_documenting = mod.done_documenting
# update the parent of all children
(klass.attributes +
klass.method_list +
klass.aliases +
klass.external_aliases +
klass.constants +
klass.includes +
klass.extends +
klass.classes +
klass.modules).each do |obj|
obj.parent = klass
obj.full_name = nil
end
klass
end
##
# Creates a new ClassModule with +name+ with optional +superclass+
#
# This is a constructor for subclasses, and must never be called directly.
def initialize(name, superclass = nil)
@constant_aliases = []
@diagram = nil
@is_alias_for = nil
@name = name
@superclass = superclass
@comment_location = [] # [[comment, location]]
super()
end
##
# Adds +comment+ to this ClassModule's list of comments at +location+. This
# method is preferred over #comment= since it allows ri data to be updated
# across multiple runs.
def add_comment comment, location
return unless document_self
original = comment
comment = case comment
when RDoc::Comment then
comment.normalize
else
normalize_comment comment
end
@comment_location.delete_if { |(_, l)| l == location }
@comment_location << [comment, location]
self.comment = original
end
def add_things my_things, other_things # :nodoc:
other_things.each do |group, things|
my_things[group].each { |thing| yield false, thing } if
my_things.include? group
things.each do |thing|
yield true, thing
end
end
end
##
# Ancestors list for this ClassModule: the list of included modules
# (classes will add their superclass if any).
#
# Returns the included classes or modules, not the includes
# themselves. The returned values are either String or
# RDoc::NormalModule instances (see RDoc::Include#module).
#
# The values are returned in reverse order of their inclusion,
# which is the order suitable for searching methods/attributes
# in the ancestors. The superclass, if any, comes last.
def ancestors
includes.map { |i| i.module }.reverse
end
def aref_prefix # :nodoc:
raise NotImplementedError, "missing aref_prefix for #{self.class}"
end
##
# HTML fragment reference for this module or class. See
# RDoc::NormalClass#aref and RDoc::NormalModule#aref
def aref
"#{aref_prefix}-#{full_name}"
end
##
# Ancestors of this class or module only
alias direct_ancestors ancestors
##
# Clears the comment. Used by the Ruby parser.
def clear_comment
@comment = ''
end
##
# This method is deprecated, use #add_comment instead.
#
# Appends +comment+ to the current comment, but separated by a rule. Works
# more like <tt>+=</tt>.
def comment= comment # :nodoc:
comment = case comment
when RDoc::Comment then
comment.normalize
else
normalize_comment comment
end
comment = "#{@comment}\n---\n#{comment}" unless @comment.empty?
super comment
end
##
# Prepares this ClassModule for use by a generator.
#
# See RDoc::Store#complete
def complete min_visibility
update_aliases
remove_nodoc_children
update_includes
remove_invisible min_visibility
end
##
# Does this ClassModule or any of its methods have document_self set?
def document_self_or_methods
document_self || method_list.any?{ |m| m.document_self }
end
##
# Does this class or module have a comment with content or is
# #received_nodoc true?
def documented?
return true if @received_nodoc
return false if @comment_location.empty?
@comment_location.any? { |comment, _| not comment.empty? }
end
##
# Iterates the ancestors of this class or module for which an
# RDoc::ClassModule exists.
def each_ancestor # :yields: module
return enum_for __method__ unless block_given?
ancestors.each do |mod|
next if String === mod
next if self == mod
yield mod
end
end
##
# Looks for a symbol in the #ancestors. See Context#find_local_symbol.
def find_ancestor_local_symbol symbol
each_ancestor do |m|
res = m.find_local_symbol(symbol)
return res if res
end
nil
end
##
# Finds a class or module with +name+ in this namespace or its descendants
def find_class_named name
return self if full_name == name
return self if @name == name
@classes.values.find do |klass|
next if klass == self
klass.find_class_named name
end
end
##
# Return the fully qualified name of this class or module
def full_name
@full_name ||= if RDoc::ClassModule === parent then
"#{parent.full_name}::#{@name}"
else
@name
end
end
##
# TODO: filter included items by #display?
def marshal_dump # :nodoc:
attrs = attributes.sort.map do |attr|
next unless attr.display?
[ attr.name, attr.rw,
attr.visibility, attr.singleton, attr.file_name,
]
end.compact
method_types = methods_by_type.map do |type, visibilities|
visibilities = visibilities.map do |visibility, methods|
method_names = methods.map do |method|
next unless method.display?
[method.name, method.file_name]
end.compact
[visibility, method_names.uniq]
end
[type, visibilities]
end
[ MARSHAL_VERSION,
@name,
full_name,
@superclass,
parse(@comment_location),
attrs,
constants.select { |constant| constant.display? },
includes.map do |incl|
next unless incl.display?
[incl.name, parse(incl.comment), incl.file_name]
end.compact,
method_types,
extends.map do |ext|
next unless ext.display?
[ext.name, parse(ext.comment), ext.file_name]
end.compact,
@sections.values,
@in_files.map do |tl|
tl.relative_name
end,
parent.full_name,
parent.class,
]
end
def marshal_load array # :nodoc:
initialize_visibility
initialize_methods_etc
@current_section = nil
@document_self = true
@done_documenting = false
@parent = nil
@temporary_section = nil
@visibility = nil
@classes = {}
@modules = {}
@name = array[1]
@full_name = array[2]
@superclass = array[3]
@comment = array[4]
@comment_location = if RDoc::Markup::Document === @comment.parts.first then
@comment
else
RDoc::Markup::Document.new @comment
end
array[5].each do |name, rw, visibility, singleton, file|
singleton ||= false
visibility ||= :public
attr = RDoc::Attr.new nil, name, rw, nil, singleton
add_attribute attr
attr.visibility = visibility
attr.record_location RDoc::TopLevel.new file
end
array[6].each do |constant, comment, file|
case constant
when RDoc::Constant then
add_constant constant
else
constant = add_constant RDoc::Constant.new(constant, nil, comment)
constant.record_location RDoc::TopLevel.new file
end
end
array[7].each do |name, comment, file|
incl = add_include RDoc::Include.new(name, comment)
incl.record_location RDoc::TopLevel.new file
end
array[8].each do |type, visibilities|
visibilities.each do |visibility, methods|
@visibility = visibility
methods.each do |name, file|
method = RDoc::AnyMethod.new nil, name
method.singleton = true if type == 'class'
method.record_location RDoc::TopLevel.new file
add_method method
end
end
end
array[9].each do |name, comment, file|
ext = add_extend RDoc::Extend.new(name, comment)
ext.record_location RDoc::TopLevel.new file
end if array[9] # Support Marshal version 1
sections = (array[10] || []).map do |section|
[section.title, section]
end
@sections = Hash[*sections.flatten]
@current_section = add_section nil
@in_files = []
(array[11] || []).each do |filename|
record_location RDoc::TopLevel.new filename
end
@parent_name = array[12]
@parent_class = array[13]
end
##
# Merges +class_module+ into this ClassModule.
#
# The data in +class_module+ is preferred over the receiver.
def merge class_module
@parent = class_module.parent
@parent_name = class_module.parent_name
other_document = parse class_module.comment_location
if other_document then
document = parse @comment_location
document = document.merge other_document
@comment = @comment_location = document
end
cm = class_module
other_files = cm.in_files
merge_collections attributes, cm.attributes, other_files do |add, attr|
if add then
add_attribute attr
else
@attributes.delete attr
@methods_hash.delete attr.pretty_name
end
end
merge_collections constants, cm.constants, other_files do |add, const|
if add then
add_constant const
else
@constants.delete const
@constants_hash.delete const.name
end
end
merge_collections includes, cm.includes, other_files do |add, incl|
if add then
add_include incl
else
@includes.delete incl
end
end
@includes.uniq! # clean up
merge_collections extends, cm.extends, other_files do |add, ext|
if add then
add_extend ext
else
@extends.delete ext
end
end
@extends.uniq! # clean up
merge_collections method_list, cm.method_list, other_files do |add, meth|
if add then
add_method meth
else
@method_list.delete meth
@methods_hash.delete meth.pretty_name
end
end
merge_sections cm
self
end
##
# Merges collection +mine+ with +other+ preferring other. +other_files+ is
# used to help determine which items should be deleted.
#
# Yields whether the item should be added or removed (true or false) and the
# item to be added or removed.
#
# merge_collections things, other.things, other.in_files do |add, thing|
# if add then
# # add the thing
# else
# # remove the thing
# end
# end
def merge_collections mine, other, other_files, &block # :nodoc:
my_things = mine. group_by { |thing| thing.file }
other_things = other.group_by { |thing| thing.file }
remove_things my_things, other_files, &block
add_things my_things, other_things, &block
end
##
# Merges the comments in this ClassModule with the comments in the other
# ClassModule +cm+.
def merge_sections cm # :nodoc:
my_sections = sections.group_by { |section| section.title }
other_sections = cm.sections.group_by { |section| section.title }
other_files = cm.in_files
remove_things my_sections, other_files do |_, section|
@sections.delete section.title
end
other_sections.each do |group, sections|
if my_sections.include? group
my_sections[group].each do |my_section|
other_section = cm.sections_hash[group]
my_comments = my_section.comments
other_comments = other_section.comments
other_files = other_section.in_files
merge_collections my_comments, other_comments, other_files do |add, comment|
if add then
my_section.add_comment comment
else
my_section.remove_comment comment
end
end
end
else
sections.each do |section|
add_section group, section.comments
end
end
end
end
##
# Does this object represent a module?
def module?
false
end
##
# Allows overriding the initial name.
#
# Used for modules and classes that are constant aliases.
def name= new_name
@name = new_name
end
##
# Parses +comment_location+ into an RDoc::Markup::Document composed of
# multiple RDoc::Markup::Documents with their file set.
def parse comment_location
case comment_location
when String then
super
when Array then
docs = comment_location.map do |comment, location|
doc = super comment
doc.file = location
doc
end
RDoc::Markup::Document.new(*docs)
when RDoc::Comment then
doc = super comment_location.text, comment_location.format
doc.file = comment_location.location
doc
when RDoc::Markup::Document then
return comment_location
else
raise ArgumentError, "unknown comment class #{comment_location.class}"
end
end
##
# Path to this class or module for use with HTML generator output.
def path
http_url @store.rdoc.generator.class_dir
end
##
# Name to use to generate the url:
# modules and classes that are aliases for another
# module or class return the name of the latter.
def name_for_path
is_alias_for ? is_alias_for.full_name : full_name
end
##
# Returns the classes and modules that are not constants
# aliasing another class or module. For use by formatters
# only (caches its result).
def non_aliases
@non_aliases ||= classes_and_modules.reject { |cm| cm.is_alias_for }
end
##
# Updates the child modules or classes of class/module +parent+ by
# deleting the ones that have been removed from the documentation.
#
# +parent_hash+ is either <tt>parent.modules_hash</tt> or
# <tt>parent.classes_hash</tt> and +all_hash+ is ::all_modules_hash or
# ::all_classes_hash.
def remove_nodoc_children
prefix = self.full_name + '::'
modules_hash.each_key do |name|
full_name = prefix + name
modules_hash.delete name unless @store.modules_hash[full_name]
end
classes_hash.each_key do |name|
full_name = prefix + name
classes_hash.delete name unless @store.classes_hash[full_name]
end
end
def remove_things my_things, other_files # :nodoc:
my_things.delete_if do |file, things|
next false unless other_files.include? file
things.each do |thing|
yield false, thing
end
true
end
end
##
# Search record used by RDoc::Generator::JsonIndex
def search_record
[
name,
full_name,
full_name,
'',
path,
'',
snippet(@comment_location),
]
end
##
# Sets the store for this class or module and its contained code objects.
def store= store
super
@attributes .each do |attr| attr.store = store end
@constants .each do |const| const.store = store end
@includes .each do |incl| incl.store = store end
@extends .each do |ext| ext.store = store end
@method_list.each do |meth| meth.store = store end
end
##
# Get the superclass of this class. Attempts to retrieve the superclass
# object, returns the name if it is not known.
def superclass
@store.find_class_named(@superclass) || @superclass
end
##
# Set the superclass of this class to +superclass+
def superclass=(superclass)
raise NoMethodError, "#{full_name} is a module" if module?
@superclass = superclass
end
def to_s # :nodoc:
if is_alias_for then
"#{self.class.name} #{self.full_name} -> #{is_alias_for}"
else
super
end
end
##
# 'module' or 'class'
def type
module? ? 'module' : 'class'
end
##
# Updates the child modules & classes by replacing the ones that are
# aliases through a constant.
#
# The aliased module/class is replaced in the children and in
# RDoc::Store#modules_hash or RDoc::Store#classes_hash
# by a copy that has <tt>RDoc::ClassModule#is_alias_for</tt> set to
# the aliased module/class, and this copy is added to <tt>#aliases</tt>
# of the aliased module/class.
#
# Formatters can use the #non_aliases method to retrieve children that
# are not aliases, for instance to list the namespace content, since
# the aliased modules are included in the constants of the class/module,
# that are listed separately.
def update_aliases
constants.each do |const|
next unless cm = const.is_alias_for
cm_alias = cm.dup
cm_alias.name = const.name
# Don't move top-level aliases under Object, they look ugly there
unless RDoc::TopLevel === cm_alias.parent then
cm_alias.parent = self
cm_alias.full_name = nil # force update for new parent
end
cm_alias.aliases.clear
cm_alias.is_alias_for = cm
if cm.module? then
@store.modules_hash[cm_alias.full_name] = cm_alias
modules_hash[const.name] = cm_alias
else
@store.classes_hash[cm_alias.full_name] = cm_alias
classes_hash[const.name] = cm_alias
end
cm.aliases << cm_alias
end
end
##
# Deletes from #includes those whose module has been removed from the
# documentation.
#--
# FIXME: includes are not reliably removed, see _possible_bug test case
def update_includes
includes.reject! do |include|
mod = include.module
!(String === mod) && @store.modules_hash[mod.full_name].nil?
end
includes.uniq!
end
##
# Deletes from #extends those whose module has been removed from the
# documentation.
#--
# FIXME: like update_includes, extends are not reliably removed
def update_extends
extends.reject! do |ext|
mod = ext.module
!(String === mod) && @store.modules_hash[mod.full_name].nil?
end
extends.uniq!
end
end