motorhead/qemu
1
0
Fork 0
mirror of https://github.com/Motorhead1991/qemu.git synced 2025-07-27 04:13:53 -06:00
Code Issues Projects Releases Packages Wiki Activity Actions

qapi: merge QInt and QFloat in QNum

Browse source 
We would like to use a same QObject type to represent numbers, whether
they are int, uint, or floats. Getters will allow some compatibility
between the various types if the number fits other representations.

Add a few more tests while at it.

Signed-off-by: Marc-André Lureau <marcandre.lureau@redhat.com>
Message-Id: <20170607163635.17635-7-marcandre.lureau@redhat.com>
Reviewed-by: Markus Armbruster <armbru@redhat.com>
[parse_stats_intervals() simplified a bit, comment in
test_visitor_in_int_overflow() tidied up, suppress bogus warnings]
Signed-off-by: Markus Armbruster <armbru@redhat.com>
This commit is contained in:
Marc-André Lureau 2017-06-07 20:35:58 +04:00 • committed by Markus Armbruster
parent 58634047b7
commit 01b2ffcedd
65 changed files with 630 additions and 664 deletions
Download patch file Download diff file Expand all files Collapse all files

30
qobject/json-parser.c
View file

@ -466,16 +466,16 @@ static QObject *parse_escape(JSONParserContext *ctxt, va_list *ap)
} else if (!strcmp(token->str, "%i")) {
return QOBJECT(qbool_from_bool(va_arg(*ap, int)));
} else if (!strcmp(token->str, "%d")) {
return QOBJECT(qint_from_int(va_arg(*ap, int)));
return QOBJECT(qnum_from_int(va_arg(*ap, int)));
} else if (!strcmp(token->str, "%ld")) {
return QOBJECT(qint_from_int(va_arg(*ap, long)));
return QOBJECT(qnum_from_int(va_arg(*ap, long)));
} else if (!strcmp(token->str, "%lld") ||
!strcmp(token->str, "%I64d")) {
return QOBJECT(qint_from_int(va_arg(*ap, long long)));
return QOBJECT(qnum_from_int(va_arg(*ap, long long)));
} else if (!strcmp(token->str, "%s")) {
return QOBJECT(qstring_from_str(va_arg(*ap, const char *)));
} else if (!strcmp(token->str, "%f")) {
return QOBJECT(qfloat_from_double(va_arg(*ap, double)));
return QOBJECT(qnum_from_double(va_arg(*ap, double)));
}
return NULL;
}
@ -491,24 +491,22 @@ static QObject *parse_literal(JSONParserContext *ctxt)
case JSON_STRING:
return QOBJECT(qstring_from_escaped_str(ctxt, token));
case JSON_INTEGER: {
/* A possibility exists that this is a whole-valued float where the
* fractional part was left out due to being 0 (.0). It's not a big
* deal to treat these as ints in the parser, so long as users of the
* resulting QObject know to expect a QInt in place of a QFloat in
* cases like these.
/*
* Represent JSON_INTEGER as QNUM_I64 if possible, else as
* QNUM_DOUBLE. Note that strtoll() fails with ERANGE when
* it's not possible.
*
* However, in some cases these values will overflow/underflow a
* QInt/int64 container, thus we should assume these are to be handled
* as QFloats/doubles rather than silently changing their values.
*
* strtoll() indicates these instances by setting errno to ERANGE
* qnum_get_int() will then work for any signed 64-bit
* JSON_INTEGER, and qnum_get_double() both for any
* JSON_INTEGER and any JSON_FLOAT (with precision loss for
* integers beyond 53 bits)
*/
int64_t value;
errno = 0; /* strtoll doesn't set errno on success */
value = strtoll(token->str, NULL, 10);
if (errno != ERANGE) {
return QOBJECT(qint_from_int(value));
return QOBJECT(qnum_from_int(value));
}
/* fall through to JSON_FLOAT */
}
@ -516,7 +514,7 @@ static QObject *parse_literal(JSONParserContext *ctxt)
/* FIXME dependent on locale; a pervasive issue in QEMU */
/* FIXME our lexer matches RFC 7159 in forbidding Inf or NaN,
* but those might be useful extensions beyond JSON */
return QOBJECT(qfloat_from_double(strtod(token->str, NULL)));
return QOBJECT(qnum_from_double(strtod(token->str, NULL)));
default:
abort();
}