Current File : //proc/thread-self/root/opt/alt/ruby20/lib64/ruby/2.0.0/rdoc/extend.rb
##
# A Module extension in a class with \#extend
class RDoc::Extend < RDoc::CodeObject
##
# Name of extension module
attr_accessor :name
##
# Creates a new Extend for +name+ with +comment+
def initialize(name, comment)
super()
@name = name
self.comment = comment
@module = nil # cache for module if found
end
##
# Extends are sorted by name
def <=> other
return unless self.class === other
name <=> other.name
end
def == other # :nodoc:
self.class === other and @name == other.name
end
alias eql? ==
##
# Full name based on #module
def full_name
m = self.module
RDoc::ClassModule === m ? m.full_name : @name
end
def hash # :nodoc:
[@name, self.module].hash
end
def inspect # :nodoc:
"#<%s:0x%x %s.extend %s>" % [
self.class,
object_id,
parent_name, @name,
]
end
##
# Attempts to locate the extend module object. Returns the name if not
# known.
#
# The scoping rules of Ruby to resolve the name of an extension module are:
# - first look into the children of the current context;
# - if not found, look into the children of extension modules,
# in reverse extend order;
# - if still not found, go up the hierarchy of names.
#
# This method has <code>O(n!)</code> behavior when the module calling
# extend is referencing nonexistent modules. Avoid calling #module until
# after all the files are parsed. This behavior is due to ruby's constant
# lookup behavior.
def module
return @module if @module
# search the current context
return @name unless parent
full_name = parent.child_name(@name)
@module = @store.modules_hash[full_name]
return @module if @module
return @name if @name =~ /^::/
# search the includes before this one, in reverse order
searched = parent.extends.take_while { |i| i != self }.reverse
searched.each do |i|
ext = i.module
next if String === ext
full_name = ext.child_name(@name)
@module = @store.modules_hash[full_name]
return @module if @module
end
# go up the hierarchy of names
up = parent.parent
while up
full_name = up.child_name(@name)
@module = @store.modules_hash[full_name]
return @module if @module
up = up.parent
end
@name
end
##
# Sets the store for this class or module and its contained code objects.
def store= store
super
@file = @store.add_file @file.full_name if @file
end
def to_s # :nodoc:
"extend #@name in: #{parent}"
end
end
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