parser.rb
These are important methods which you must implement in your parser code (inner).
- next_token
-
yylex() of yacc. This method must returns Array like [token, value].
token is Ruby simbol (Fixnum) or String as default.
EOF is [false, false].
- on_error( err_tok, err_val, _values )
-
yyerror() of yacc.
err_tok is token simbol on error (internal type).
err_val is its value. _values is semantic value stack.
Copyright(c) 1998-1999 Minero Aoki
<aamine@dp.u-netsurf.ne.jp>