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  • rdoc/parsers/parse_rb.rb

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RubyToken

Definitions of all tokens involved in the lexical analysis

Constants

EXPR_ARG
EXPR_BEG
EXPR_CLASS
EXPR_DOT
EXPR_END
EXPR_FNAME
EXPR_MID
NEWLINE_TOKEN
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 rdoc/parsers/parse_rb.rb, line 270
  def RubyToken.def_token(token_n, super_token = Token, reading = nil, *opts)
    token_n = token_n.id2name unless token_n.kind_of?(String)
    if RubyToken.const_defined?(token_n)
      IRB.fail AlreadyDefinedToken, token_n
    end

    token_c =  Class.new super_token
    RubyToken.const_set token_n, token_c
#    token_c.inspect
 
    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

    if token_c <= TkOp
      token_c.class_eval %Q{
        def self.op_name; "#{reading}"; end
      }
    end
  end
            

Public Instance Methods

Token(token, value = nil) click to toggle source
 
               # File rdoc/parsers/parse_rb.rb, line 112
def Token(token, value = nil)
  tk = nil
  case token
  when String, Symbol
    source = token.kind_of?(String) ? TkReading2Token : TkSymbol2Token
    if (tk = source[token]).nil?
      IRB.fail TkReading2TokenNoKey, token
    end
    tk = Token(tk[0], value) 
  else 
    tk = if (token.ancestors & [TkId, TkVal, TkOPASGN, TkUnknownChar]).empty?
           token.new(@prev_line_no, @prev_char_no)
         else
           token.new(@prev_line_no, @prev_char_no, value)
         end
  end
  tk
end
            
set_token_position(line, char) click to toggle source
 
               # File rdoc/parsers/parse_rb.rb, line 107
def set_token_position(line, char)
  @prev_line_no = line
  @prev_char_no = char
end