[Caml-list] parser error

[Caml-list] parser error

[Flavio Leonardo Cavalcanti de Moura]

I wrote a parser originally in ocaml 3.02 and it works well. It was a
suprise for me to receive an error message when I tryed to compile it in
ocaml 3.07. The error message I receive is:

File "selexerlse.ml", line 21, characters 6-8:
Syntax error
File "selexerls.ml", line 27, characters 6-8:
Syntax error
File "selexersus.ml", line 74, characters 6-8:
Syntax error
File "subsexpl.ml", line 129, characters 45-47:
Warning: Illegal backslash escape in string
make: ** [depend] Erro 2

The error occurs exactly at the same string in three files (selexerlse.ml,
selexerls.ml and selexersus.ml) above. It in
the first occurrence of [< in the code below:

let rec  parse_expr1 = parser
      [< 'Ident s >] -> (Vr s)
    | [< 'Int 1 >] -> (One)
    | [< 'Int n >] -> (convertN(n))
    | [< 'Kwd "A";  'Kwd "("; e1 = parse_expr1; 'Kwd ","; e2 =
parse_expr1; 'Kwd ")" >] -> A(e1,e2)
    | [< 'Kwd "L"; 'Kwd "("; e1 = parse_expr1;  'Kwd ")" >] -> L(e1)
    | [< 'Kwd "Sb"; 'Kwd "("; e1 = parse_expr1 ;  'Kwd ","; sb =
parse_subs; 'Kwd ")" >] -> Sb(e1,sb)
and
parse_subs = parser
  [< 'Kwd "Id" >] -> (Id)
| [< 'Kwd "Up" >] -> (Up)
| [< 'Kwd "Pt"; 'Kwd "("; e1 = parse_expr1 ;  'Kwd ","; sb = parse_subs;
'Kwd ")" >] -> Pt(e1,sb)
| [< 'Kwd "Cp"; 'Kwd "("; s1 = parse_subs ;  'Kwd ","; s2 = parse_subs ;
'Kwd ")" >] -> Cp(s1,s2)
 ;;

Does anyone know what is the problem?

Best Regards,

  	Flávio Leonardo Cavalcanti de Moura
   		flavio@mat.unb.br      ^v^
	     www.mat.unb.br/~flavio   /(_)\
                 Use GNU/Linux!        ^ ^

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Re: [Caml-list] parser error

[Damien Doligez]

On Saturday, October 18, 2003, at 10:33 PM, Flavio Leonardo Cavalcanti 
de Moura wrote:

> I wrote a parser originally in ocaml 3.02 and it works well. It was a
> suprise for me to receive an error message when I tryed to compile it 
> in
> ocaml 3.07. The error message I receive is:

Since your parser is written with streams, you now need to compile
with "ocamlc -pp camlp4o" instead of simply "ocamlc".

-- Damien

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Re: [Caml-list] parser error

[Dmitry Bely]

Damien Doligez <damien.doligez@inria.fr> writes:

>> I wrote a parser originally in ocaml 3.02 and it works well. It was a
>> suprise for me to receive an error message when I tryed to compile
>> it in
>> ocaml 3.07. The error message I receive is:
>
> Since your parser is written with streams, you now need to compile
> with "ocamlc -pp camlp4o" instead of simply "ocamlc".

BTW, now the situation with camplp4 is clear (it's integral part of Ocaml
distribution), so why not to make it the default parser for Ocaml and get
rid of yacc grammar completely?

- Dmitry Bely


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Re: [Caml-list] parser error

[Sven Luther]

On Mon, Oct 20, 2003 at 02:46:38PM +0400, Dmitry Bely wrote:
> Damien Doligez <damien.doligez@inria.fr> writes:
> 
> >> I wrote a parser originally in ocaml 3.02 and it works well. It was a
> >> suprise for me to receive an error message when I tryed to compile
> >> it in
> >> ocaml 3.07. The error message I receive is:
> >
> > Since your parser is written with streams, you now need to compile
> > with "ocamlc -pp camlp4o" instead of simply "ocamlc".
> 
> BTW, now the situation with camplp4 is clear (it's integral part of Ocaml
> distribution), so why not to make it the default parser for Ocaml and get
> rid of yacc grammar completely?

Because it is so damn slow ?

Friendly,

Sven Luther

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