Class: RubyNodeReflector::RubyReflector::ScopeMethod

Inherits:
Object
  • Object
show all
Defined in:
lib/ruby_reflector.rb

Overview

:nodoc:

Instance Method Summary collapse

Instance Method Details

#_scopic(ref, node) ⇒ Object

this is complex because Ruby gloms several different

kinds of variables into one "scope" token, and they
don't directly match their layout in the source code



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# File 'lib/ruby_reflector.rb', line 235

def _scopic(ref, node)
  @ref        = ref
  @node       = node
  @expression = ''
  @previously = false
  @block_arg  = false
  @splat_arg  = false
  @previous_splat = false
  
  if @node[:tbl]
    @expression << '('
    render_argument_list
    @expression << ')'
  end
  
  @expression << "\n"
  @expression << @ref.next_(@node)
  return @expression
end

#possible_comma(token) ⇒ Object 



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# File 'lib/ruby_reflector.rb', line 261

def possible_comma(token)
  @expression << ', ' if @index > 0
  @expression << @ref._send(token)
end

#render_argument ⇒ Object 



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# File 'lib/ruby_reflector.rb', line 280

def render_argument
  @splat_arg = @block_arg = false

  if @rest and @rest.first == :lasgn and 
      (@n == nil or @rest.last[:vid] == @n)
    ulterior_comma('*')
    @splat_arg = true
  end

  if @block and (ba = @block[1]) and
      ba.first == :block_arg and ba.last[:vid] == @n
    ulterior_comma('&')
    @block_arg = true
  end

  #  ERGO  Ruby 1.9 changes these rules!!

  if !@previous_splat or @block_arg
    if @opt and @opt.first == :block and #  ERGO  why a @block??
      (lasgn = @opt.last.first).first == :lasgn and
        lasgn.last[:vid] == @n
      @previously = true
      possible_comma(@opt.last.first)
    else
      possible_comma(@n)
      @expression << ' = nil' if @previously and !@block_arg and !@splat_arg
    end

    @previous_splat ||= @splat_arg
  end
end

#render_argument_list ⇒ Object 



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# File 'lib/ruby_reflector.rb', line 266

def render_argument_list
  @nekst = @node[:next]
  @block = @nekst.last       if @nekst && @nekst.first == :block
  @args  = @block.first.last if @block && @block.first.first == :args
  @rest  = @args[:rest]      if @args
  @opt   = @args[:opt]       if @args

  @node[:tbl].each_with_index do |_n, _index|
    @n, @index = _n, _index
    render_argument
    break if @block_arg
  end
end

#ulterior_comma(token) ⇒ Object 



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# File 'lib/ruby_reflector.rb', line 255

def ulterior_comma(token)
  @expression << ', ' if @index > 0
  @expression << token
  @index = 0
end