Re: FYI: lalr1.cc: Move tokens and YYSTYPE into the class

[Hans Aberg]

I think that if the lexer is to be pure, it should have the following  
structure:

namespace yy {

  class lexer {

  public:
    token_type lex(semantic_type& [,...]);
  };

}

This means that semantic_type must be known to class lexer at least  
as a reference. So it suggests that also the semantic type should be  
put in a header, as I suggested. [,...] might contain other data the  
lexer is communicating with the parser, like the location.

  Hans Aberg