From 2ef9c50c6e405717d06362787c4549ca4f1c6485 Mon Sep 17 00:00:00 2001
From: drbrain <drbrain@b2dd03c8-39d4-4d8f-98ff-823fe69b080e>
Date: Mon, 20 Dec 2010 03:22:49 +0000
Subject: Import RDoc 3

git-svn-id: svn+ssh://ci.ruby-lang.org/ruby/trunk@30249 b2dd03c8-39d4-4d8f-98ff-823fe69b080e
---
 lib/rdoc/alias.rb | 79 ++++++++++++++++++++++++++++++++++++++++++++++++-------
 1 file changed, 69 insertions(+), 10 deletions(-)

(limited to 'lib/rdoc/alias.rb')

diff --git a/lib/rdoc/alias.rb b/lib/rdoc/alias.rb
index 6cd9af09d4..fa433dc0a9 100644
--- a/lib/rdoc/alias.rb
+++ b/lib/rdoc/alias.rb
@@ -3,41 +3,77 @@ require 'rdoc/code_object'
 ##
 # Represent an alias, which is an old_name/new_name pair associated with a
 # particular context
+#--
+# TODO implement Alias as a proxy to a method/attribute, inheriting from
+#      MethodAttr
 
 class RDoc::Alias < RDoc::CodeObject
 
   ##
-  # Allow comments to be overridden
+  # Aliased method's name
 
-  attr_writer :comment
+  attr_reader :new_name
+
+  alias name new_name
 
   ##
-  # Aliased name
+  # Aliasee method's name
 
-  attr_accessor :new_name
+  attr_reader :old_name
 
   ##
-  # Aliasee's name
+  # Is this an alias declared in a singleton context?
 
-  attr_accessor :old_name
+  attr_accessor :singleton
 
   ##
   # Source file token stream
 
-  attr_accessor :text
+  attr_reader :text
 
   ##
   # Creates a new Alias with a token stream of +text+ that aliases +old_name+
-  # to +new_name+ and has +comment+
+  # to +new_name+, has +comment+ and is a +singleton+ context.
 
-  def initialize(text, old_name, new_name, comment)
+  def initialize(text, old_name, new_name, comment, singleton = false)
     super()
+
     @text = text
+    @singleton = singleton
     @old_name = old_name
     @new_name = new_name
     self.comment = comment
   end
 
+  ##
+  # Order by #singleton then #new_name
+
+  def <=>(other)
+    [@singleton ? 0 : 1, new_name] <=> [other.singleton ? 0 : 1, other.new_name]
+  end
+
+  ##
+  # HTML fragment reference for this alias
+
+  def aref
+    type = singleton ? 'c' : 'i'
+    "#alias-#{type}-#{html_name}"
+  end
+
+  ##
+  # Full old name including namespace
+
+  def full_old_name
+    @full_name || "#{parent.name}#{pretty_old_name}"
+  end
+
+  ##
+  # HTML id-friendly version of +#new_name+.
+
+  def html_name
+    CGI.escape(@new_name.gsub('-', '-2D')).gsub('%','-').sub(/^-/, '')
+  end
+
   def inspect # :nodoc:
     parent_name = parent ? parent.name : '(unknown)'
     "#<%s:0x%x %s.alias_method %s, %s>" % [
@@ -46,8 +82,31 @@ class RDoc::Alias < RDoc::CodeObject
     ]
   end
 
+  ##
+  # '::' for the alias of a singleton method/attribute, '#' for instance-level.
+
+  def name_prefix
+    singleton ? '::' : '#'
+  end
+
+  ##
+  # Old name with prefix '::' or '#'.
+
+  def pretty_old_name
+    "#{singleton ? '::' : '#'}#{@old_name}"
+  end
+
+  ##
+  # New name with prefix '::' or '#'.
+
+  def pretty_new_name
+    "#{singleton ? '::' : '#'}#{@new_name}"
+  end
+
+  alias pretty_name pretty_new_name
+
   def to_s # :nodoc:
-    "alias: #{self.old_name} -> #{self.new_name}\n#{self.comment}"
+    "alias: #{self.new_name} -> #{self.pretty_old_name} in: #{parent}"
   end
 
 end
-- 
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