[Date Prev][Date Next][Thread Prev][Thread Next][Date Index][Thread Index]
Re: Token value in custom error reporting
From: |
Hans Åberg |
Subject: |
Re: Token value in custom error reporting |
Date: |
Thu, 18 Jun 2020 19:11:47 +0200 |
> On 18 Jun 2020, at 18:56, Akim Demaille <akim@lrde.epita.fr> wrote:
>
>> Le 18 juin 2020 à 14:54, Hans Åberg <haberg-1@telia.com> a écrit :
>>
>> In my C++ parser, the lexer has rule
>> . { return my_parser::token::token_error; }
>>
>> When it is triggers, I get the error:
>> <file>:21.1: error: syntax error, unexpected token error
>>
>> It might be nicer to actually write out this token, though.
>
> I have already explained what I don't think this is a good idea.
>
> https://lists.gnu.org/r/help-bison/2020-06/msg00017.html
>
> I also have explained that scanner errors should be handled
> by the scanner. For instance, in the bistro, you can read:
>
> int
> yylex (const char **line, YYSTYPE *yylval, YYLTYPE *yylloc)
> {
> int c;
>
> [...]
>
> switch (c)
> {
> [...]
> // Stray characters.
> default:
> yyerror (yylloc, "syntax error: invalid character: %c", c);
> return TOK_YYerror;
> }
> }
>
> Cheers!
Is that not the case, which I responded to, where you get double error
messages, both from the lexer and parser?
- Token value in custom error reporting, Daniele Nicolodi, 2020/06/17
- Re: Token value in custom error reporting, Akim Demaille, 2020/06/18
- Re: Token value in custom error reporting, Daniele Nicolodi, 2020/06/18
- Re: Token value in custom error reporting, Akim Demaille, 2020/06/18
- Re: Token value in custom error reporting, Daniele Nicolodi, 2020/06/18
- Re: Token value in custom error reporting, Adrian Vogelsgesang, 2020/06/18
- Re: Token value in custom error reporting, Akim Demaille, 2020/06/18
- Re: Token value in custom error reporting, Adrian Vogelsgesang, 2020/06/18
- Re: Token value in custom error reporting, Hans Åberg, 2020/06/18
- Re: Token value in custom error reporting, Akim Demaille, 2020/06/18
- Re: Token value in custom error reporting,
Hans Åberg <=
- Re: Token value in custom error reporting, Akim Demaille, 2020/06/18
- Re: Token value in custom error reporting, Hans Åberg, 2020/06/18
- Re: Token value in custom error reporting, Akim Demaille, 2020/06/19
- Re: Token value in custom error reporting, Hans Åberg, 2020/06/19
- Re: Token value in custom error reporting, Akim Demaille, 2020/06/18