# class RDoc::Constant

A constant

### Attributes

is_alias_for[W]

Sets the module or class this is constant is an alias for.

name[RW]

The constant's name

value[RW]

The constant's value

visibility[RW]

The constant's visibility

### Public Class Methods

new(name, value, comment) click to toggle source

Creates a new constant with `name`, `value` and `comment`

Calls superclass method `RDoc::CodeObject::new`

    # File lib/rdoc/constant.rb, line 32
    def initialize(name, value, comment)
      super()

      @name  = name
      @value = value

      @is_alias_for = nil
      @visibility   = :public

      self.comment = comment
    end

### Public Instance Methods

<=>(other) click to toggle source

Constants are ordered by name

    # File lib/rdoc/constant.rb, line 47
    def <=> other
      return unless self.class === other

      [parent_name, name] <=> [other.parent_name, other.name]
    end

==(other) click to toggle source

Constants are equal when their `parent` and `name` is the same

    # File lib/rdoc/constant.rb, line 56
    def == other
      self.class == other.class and
        @parent == other.parent and
        @name == other.name
    end

documented?() click to toggle source

A constant is documented if it has a comment, or is an alias for a documented class or module.

Calls superclass method `RDoc::CodeObject#documented?`

    # File lib/rdoc/constant.rb, line 66
    def documented?
      return true if super
      return false unless @is_alias_for
      case @is_alias_for
      when String then
        found = @store.find_class_or_module @is_alias_for
        return false unless found
        @is_alias_for = found
      end
      @is_alias_for.documented?
    end

full_name() click to toggle source

Full constant name including namespace

    # File lib/rdoc/constant.rb, line 81
    def full_name
      @full_name ||= "#{parent_name}::#{@name}"
    end

is_alias_for() click to toggle source

The module or class this constant is an alias for

    # File lib/rdoc/constant.rb, line 88
    def is_alias_for
      case @is_alias_for
      when String then
        found = @store.find_class_or_module @is_alias_for
        @is_alias_for = found if found
        @is_alias_for
      else
        @is_alias_for
      end
    end

marshal_dump() click to toggle source

Dumps this `Constant` for use by ri. See also `marshal_load`

    # File lib/rdoc/constant.rb, line 109
    def marshal_dump
      alias_name = case found = is_alias_for
                   when RDoc::CodeObject then found.full_name
                   else                       found
                   end

      [ MARSHAL_VERSION,
        @name,
        full_name,
        @visibility,
        alias_name,
        parse(@comment),
        @file.relative_name,
        parent.name,
        parent.class,
        section.title,
      ]
    end

marshal_load(array) click to toggle source

Loads this `Constant` from `array`. For a loaded `Constant` the following methods will return cached values:

- `full_name`

- `parent_name`

    # File lib/rdoc/constant.rb, line 135
    def marshal_load array
      initialize array[1], nil, array[5]

      @full_name     = array[2]
      @visibility    = array[3] || :public
      @is_alias_for  = array[4]
      #                      5 handled above
      #                      6 handled below
      @parent_name   = array[7]
      @parent_class  = array[8]
      @section_title = array[9]

      @file = RDoc::TopLevel.new array[6]
    end

path() click to toggle source

Path to this constant for use with HTML generator output.

    # File lib/rdoc/constant.rb, line 153
    def path
      "#{@parent.path}##{@name}"
    end

store=(store) click to toggle source

Sets the store for this class or module and its contained code objects.

Calls superclass method `RDoc::CodeObject#store=`

    # File lib/rdoc/constant.rb, line 171
    def store= store
      super

      @file = @store.add_file @file.full_name if @file
    end