Re: [Qemu-devel] Re: [PATCH] win32: use PRId64 instead of %lld

[Luiz Capitulino <lcapitulino@redhat.com>]

On Mon, 25 Jan 2010 12:09:06 +0200
"Michael S. Tsirkin" <mst@redhat.com> wrote:

> On Sun, Jan 24, 2010 at 09:23:41PM +0000, Herve Poussineau wrote:
> > Replace %lld occurrences by PRId64.
> > diff --git a/json-lexer.c b/json-lexer.c
> > index 53697c5..9d64920 100644
> > --- a/json-lexer.c
> > +++ b/json-lexer.c
> > @@ -54,6 +54,9 @@ enum json_lexer_state {
> >      IN_ESCAPE,
> >      IN_ESCAPE_L,
> >      IN_ESCAPE_LL,
> > +    IN_ESCAPE_I,
> > +    IN_ESCAPE_I6,
> > +    IN_ESCAPE_I64,
> >      IN_ESCAPE_DONE,
> >      IN_WHITESPACE,
> >      IN_OPERATOR_DONE,
> > @@ -223,6 +226,18 @@ static const uint8_t json_lexer[][256] =  {
> >          ['l'] = IN_ESCAPE_LL,
> >      },
> >  
> > +    [IN_ESCAPE_I64] = {
> > +        ['d'] = IN_ESCAPE_DONE,
> > +    },
> > +
> > +    [IN_ESCAPE_I6] = {
> > +        ['4'] = IN_ESCAPE_I64,
> > +    },
> > +
> > +    [IN_ESCAPE_I] = {
> > +        ['6'] = IN_ESCAPE_I6,
> > +    },
> > +
> >      [IN_ESCAPE] = {
> >          ['d'] = IN_ESCAPE_DONE,
> >          ['i'] = IN_ESCAPE_DONE,
> > @@ -230,6 +245,7 @@ static const uint8_t json_lexer[][256] =  {
> >          ['s'] = IN_ESCAPE_DONE,
> >          ['f'] = IN_ESCAPE_DONE,
> >          ['l'] = IN_ESCAPE_L,
> > +        ['I'] = IN_ESCAPE_I,
> >      },
> >  
> >      /* top level rule */
> 
> 
> Why do we want yet another tag?
> 
> OTOH, Luiz, maybe it is a mistake to use "long"
> in QMP: legal values might vary between platforms.
> How about we get rid of long and only use long long to mean 64
> bit/int to mean 32 bit? Or even redefine "l" to mean 64 bit and "i" to
> mean "32 bit.

 Not that familiar with the parser (Anthony wrote it), but I guess
it will convert any int type (with the limit of int64_t) to
json int.

> Also, why do we allow "d" as synonym of "i"?  Keeping all
> of int/long/long long around does not make sense to me though.  Finally,
> don't we want unsigned values in protocol?

 JSON doesn't support them.