method

module

v2_1_10 - Show latest stable - Class: RDoc::Mixin

module()

public

Attempts to locate the included module object. Returns the name if not known.

The scoping rules of Ruby to resolve the name of an included module are:

first look into the children of the current context;
if not found, look into the children of included modules, in reverse inclusion order;
if still not found, go up the hierarchy of names.

This method has O(n!) behavior when the module calling include is referencing nonexistent modules. Avoid calling #module until after all the files are parsed. This behavior is due to ruby’s constant lookup behavior.

As of the beginning of October, 2011, no gem includes nonexistent modules.

# File lib/rdoc/mixin.rb, line 74
  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.includes.take_while { |i| i != self }.reverse
    searched.each do |i|
      inc = i.module
      next if String === inc
      full_name = inc.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

module

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