Method: Racc::Parser#next_token

Defined in:
lib/racc/parser.rb

#next_token ⇒ Object

The method to fetch next token. If you use #do_parse method, you must implement #next_token.

The format of return value is [TOKEN_SYMBOL, VALUE]. token-symbol is represented by Ruby’s symbol by default, e.g. :IDENT for ‘IDENT’. “;” (String) for ‘;’.

The final symbol (End of file) must be false.

Raises:

  • (NotImplementedError) 


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# File 'lib/racc/parser.rb', line 275

def next_token
  raise NotImplementedError, "#{self.class}\#next_token is not defined"
end