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qnum: add uint type

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In order to store integer values between INT64_MAX and UINT64_MAX, add
a uint64_t internal representation.

Signed-off-by: Marc-André Lureau <marcandre.lureau@redhat.com>
Reviewed-by: Markus Armbruster <armbru@redhat.com>
Message-Id: <20170607163635.17635-10-marcandre.lureau@redhat.com>
Signed-off-by: Markus Armbruster <armbru@redhat.com>
This commit is contained in:
Marc-André Lureau 2017-06-07 20:36:01 +04:00 • committed by Markus Armbruster
parent 36aeb6094f
commit 61a8f418b2
3 changed files with 119 additions and 0 deletions
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64
qobject/qnum.c
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@ -34,6 +34,22 @@ QNum *qnum_from_int(int64_t value)
return qn;
}
/**
* qnum_from_uint(): Create a new QNum from an uint64_t
*
* Return strong reference.
*/
QNum *qnum_from_uint(uint64_t value)
{
QNum *qn = g_new(QNum, 1);
qobject_init(QOBJECT(qn), QTYPE_QNUM);
qn->kind = QNUM_U64;
qn->u.u64 = value;
return qn;
}
/**
* qnum_from_double(): Create a new QNum from a double
*
@ -61,6 +77,12 @@ bool qnum_get_try_int(const QNum *qn, int64_t *val)
case QNUM_I64:
*val = qn->u.i64;
return true;
case QNUM_U64:
if (qn->u.u64 > INT64_MAX) {
return false;
}
*val = qn->u.u64;
return true;
case QNUM_DOUBLE:
return false;
}
@ -82,6 +104,44 @@ int64_t qnum_get_int(const QNum *qn)
return val;
}
/**
* qnum_get_uint(): Get an unsigned integer from the number
*
* Return true on success.
*/
bool qnum_get_try_uint(const QNum *qn, uint64_t *val)
{
switch (qn->kind) {
case QNUM_I64:
if (qn->u.i64 < 0) {
return false;
}
*val = qn->u.i64;
return true;
case QNUM_U64:
*val = qn->u.u64;
return true;
case QNUM_DOUBLE:
return false;
}
assert(0);
return false;
}
/**
* qnum_get_uint(): Get an unsigned integer from the number
*
* assert() on failure.
*/
uint64_t qnum_get_uint(const QNum *qn)
{
uint64_t val;
bool success = qnum_get_try_uint(qn, &val);
assert(success);
return val;
}
/**
* qnum_get_double(): Get a float representation of the number
*
@ -92,6 +152,8 @@ double qnum_get_double(QNum *qn)
switch (qn->kind) {
case QNUM_I64:
return qn->u.i64;
case QNUM_U64:
return qn->u.u64;
case QNUM_DOUBLE:
return qn->u.dbl;
}
@ -108,6 +170,8 @@ char *qnum_to_string(QNum *qn)
switch (qn->kind) {
case QNUM_I64:
return g_strdup_printf("%" PRId64, qn->u.i64);
case QNUM_U64:
return g_strdup_printf("%" PRIu64, qn->u.u64);
case QNUM_DOUBLE:
/* FIXME: snprintf() is locale dependent; but JSON requires
* numbers to be formatted as if in the C locale. Dependence