JezK
Edit File: ri_util.rb
###################################################################### class RiError < Exception; end # # Break argument into its constituent class or module names, an # optional method type, and a method name class NameDescriptor attr_reader :class_names attr_reader :method_name # true and false have the obvious meaning. nil means we don't care attr_reader :is_class_method # arg may be # 1. a class or module name (optionally qualified with other class # or module names (Kernel, File::Stat etc) # 2. a method name # 3. a method name qualified by a optionally fully qualified class # or module name # # We're fairly casual about delimiters: folks can say Kernel::puts, # Kernel.puts, or Kernel\#puts for example. There's one exception: # if you say IO::read, we look for a class method, but if you # say IO.read, we look for an instance method def initialize(arg) @class_names = [] separator = nil tokens = arg.split(/(\.|::|#)/) # Skip leading '::', '#' or '.', but remember it might # be a method name qualifier separator = tokens.shift if tokens[0] =~ /^(\.|::|#)/ # Skip leading '::', but remember we potentially have an inst # leading stuff must be class names while tokens[0] =~ /^[A-Z]/ @class_names << tokens.shift unless tokens.empty? separator = tokens.shift break unless separator == "::" end end # Now must have a single token, the method name, or an empty # array unless tokens.empty? @method_name = tokens.shift # We may now have a trailing !, ?, or = to roll into # the method name if !tokens.empty? && tokens[0] =~ /^[!?=]$/ @method_name << tokens.shift end if @method_name =~ /::|\.|#/ or !tokens.empty? raise RiError.new("Bad argument: #{arg}") end if separator && separator != '.' @is_class_method = separator == "::" end end end # Return the full class name (with '::' between the components) # or "" if there's no class name def full_class_name @class_names.join("::") end end