# frozen_string_literal: true
##
# 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
##
# Aliased method's name
attr_reader :new_name
alias name new_name
##
# Aliasee method's name
attr_reader :old_name
##
# Is this an alias declared in a singleton context?
attr_accessor :singleton
##
# Source file token stream
attr_reader :text
##
# Creates a new Alias with a token stream of +text+ that aliases +old_name+
# to +new_name+, has +comment+ and is a +singleton+ context.
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>" % [
self.class, object_id,
parent_name, @old_name, @new_name,
]
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.new_name} -> #{self.pretty_old_name} in: #{parent}"
end
end
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