In Files

  • irb/ruby-token.rb

RubyToken

irb/ruby-token.rb - ruby tokens 
    $Release Version: 0.9.5$
    $Revision: 11708 $
    $Date: 2007-02-12 16:01:19 -0700 (Mon, 12 Feb 2007) $
    by Keiju ISHITSUKA(keiju@ruby-lang.org)

Constants

EXPR_ARG
EXPR_BEG
EXPR_CLASS
EXPR_DOT
EXPR_END
EXPR_FNAME
EXPR_MID
Symbol
TkReading2Token

{reading => token_class} {reading => [token_class, *opt]}

TkSymbol2Token
TokenDefinitions

Public Class Methods

def_token(token_n, super_token = Token, reading = nil, *opts) click to toggle source
 
               # File irb/ruby-token.rb, line 250
def RubyToken.def_token(token_n, super_token = Token, reading = nil, *opts)
  token_n = token_n.id2name if token_n.kind_of?(Symbol)
  if RubyToken.const_defined?(token_n)
    IRB.fail AlreadyDefinedToken, token_n
  end
  token_c = eval("class #{token_n} < #{super_token}; end; #{token_n}")
  
  if reading
    if TkReading2Token[reading]
      IRB.fail TkReading2TokenDuplicateError, token_n, reading
    end
    if opts.empty?
      TkReading2Token[reading] = [token_c]
    else
      TkReading2Token[reading] = [token_c].concat(opts)
    end
  end
  TkSymbol2Token[token_n.intern] = token_c
end
            

Public Instance Methods

Token(token, value = nil) click to toggle source
 
               # File irb/ruby-token.rb, line 84
def Token(token, value = nil)
  case token
  when String
    if (tk = TkReading2Token[token]).nil?
      IRB.fail TkReading2TokenNoKey, token
    end
    tk = Token(tk[0], value) 
    if tk.kind_of?(TkOp)
      tk.name = token
    end
    return tk
  when Symbol
    if (tk = TkSymbol2Token[token]).nil?
      IRB.fail TkSymbol2TokenNoKey, token
    end
    return Token(tk[0], value) 
  else 
    if (token.ancestors & [TkId, TkVal, TkOPASGN, TkUnknownChar]).empty?
      token.new(@prev_seek, @prev_line_no, @prev_char_no)
    else
      token.new(@prev_seek, @prev_line_no, @prev_char_no, value)
    end
  end
end