qobject: Replace qobject_from_jsonf() by qobject_from_jsonf_nofail()
Commit ab45015a96 "qobject: Let qobject_from_jsonf() fail instead of
abort" fails to accomplish its stated aim: the function can still
abort due to its use of &error_abort.
Its rationale for letting it fail is that all remaining users cope
fine with failure. Well, they're just fine with aborting, too; it's
what they do on failure.
Simply reverting the broken commit would bring back the unfortunate
asymmetry between qobject_from_jsonf() and qobject_from_jsonv(): one
aborts, the other returns null. So also rename it to
qobject_from_jsonf_nofail().
Signed-off-by: Markus Armbruster <armbru@redhat.com>
Reviewed-by: Thomas Huth <thuth@redhat.com>
Reviewed-by: Eric Blake <eblake@redhat.com>
Message-Id: <20180806065344.7103-7-armbru@redhat.com>
This commit is contained in:
Markus Armbruster
parent
bb340eb238
commit
6ce80fd803
@ -15,11 +15,13 @@
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#define QJSON_H
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QObject *qobject_from_json(const char *string, Error **errp);
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QObject *qobject_from_jsonf(const char *string, ...) GCC_FMT_ATTR(1, 2);
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QObject *qobject_from_jsonv(const char *string, va_list *ap, Error **errp)
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GCC_FMT_ATTR(1, 0);
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QDict *qdict_from_jsonf_nofail(const char *string, ...) GCC_FMT_ATTR(1, 2);
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QObject *qobject_from_jsonf_nofail(const char *string, ...)
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GCC_FMT_ATTR(1, 2);
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QDict *qdict_from_jsonf_nofail(const char *string, ...)
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GCC_FMT_ATTR(1, 2);
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QString *qobject_to_json(const QObject *obj);
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QString *qobject_to_json_pretty(const QObject *obj);
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@ -59,7 +59,12 @@ QObject *qobject_from_json(const char *string, Error **errp)
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return qobject_from_jsonv(string, NULL, errp);
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}
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QObject *qobject_from_jsonf(const char *string, ...)
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/*
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* Parse @string as JSON value with %-escapes interpolated.
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* Abort on error. Do not use with untrusted @string.
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* Return the resulting QObject. It is never null.
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*/
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QObject *qobject_from_jsonf_nofail(const char *string, ...)
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{
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QObject *obj;
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va_list ap;
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@ -68,6 +73,7 @@ QObject *qobject_from_jsonf(const char *string, ...)
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obj = qobject_from_jsonv(string, &ap, &error_abort);
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va_end(ap);
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assert(obj);
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return obj;
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}
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@ -865,7 +865,8 @@ static void vararg_string(void)
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QString *str;
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str = qobject_to(QString,
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qobject_from_jsonf("%s", test_cases[i].decoded));
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qobject_from_jsonf_nofail("%s",
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test_cases[i].decoded));
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g_assert(str);
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g_assert(strcmp(qstring_get_str(str), test_cases[i].decoded) == 0);
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@ -998,17 +999,17 @@ static void vararg_number(void)
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double valuef = 2.323423423;
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int64_t val;
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qnum = qobject_to(QNum, qobject_from_jsonf("%d", value));
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qnum = qobject_to(QNum, qobject_from_jsonf_nofail("%d", value));
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g_assert(qnum_get_try_int(qnum, &val));
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g_assert_cmpint(val, ==, value);
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qobject_unref(qnum);
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qnum = qobject_to(QNum, qobject_from_jsonf("%lld", value_ll));
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qnum = qobject_to(QNum, qobject_from_jsonf_nofail("%lld", value_ll));
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g_assert(qnum_get_try_int(qnum, &val));
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g_assert_cmpint(val, ==, value_ll);
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qobject_unref(qnum);
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qnum = qobject_to(QNum, qobject_from_jsonf("%f", valuef));
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qnum = qobject_to(QNum, qobject_from_jsonf_nofail("%f", valuef));
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g_assert(qnum_get_double(qnum) == valuef);
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qobject_unref(qnum);
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}
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@ -1042,13 +1043,13 @@ static void keyword_literal(void)
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qobject_unref(qbool);
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qbool = qobject_to(QBool, qobject_from_jsonf("%i", false));
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qbool = qobject_to(QBool, qobject_from_jsonf_nofail("%i", false));
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g_assert(qbool);
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g_assert(qbool_get_bool(qbool) == false);
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qobject_unref(qbool);
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/* Test that non-zero values other than 1 get collapsed to true */
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qbool = qobject_to(QBool, qobject_from_jsonf("%i", 2));
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qbool = qobject_to(QBool, qobject_from_jsonf_nofail("%i", 2));
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g_assert(qbool);
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g_assert(qbool_get_bool(qbool) == true);
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qobject_unref(qbool);
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@ -1298,7 +1299,7 @@ static void simple_varargs(void)
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embedded_obj = qobject_from_json("[32, 42]", &error_abort);
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g_assert(embedded_obj != NULL);
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obj = qobject_from_jsonf("[%d, 2, %p]", 1, embedded_obj);
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obj = qobject_from_jsonf_nofail("[%d, 2, %p]", 1, embedded_obj);
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g_assert(qlit_equal_qobject(&decoded, obj));
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qobject_unref(obj);
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@ -77,8 +77,8 @@ void qtest_quit(QTestState *s);
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* qtest_qmp:
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* @s: #QTestState instance to operate on.
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* @fmt...: QMP message to send to qemu, formatted like
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* qobject_from_jsonf(). See parse_escape() for what's supported
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* after '%'.
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* qobject_from_jsonf_nofail(). See parse_escape() for what's
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* supported after '%'.
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*
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* Sends a QMP message to QEMU and returns the response.
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*/
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@ -88,8 +88,8 @@ QDict *qtest_qmp(QTestState *s, const char *fmt, ...);
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* qtest_qmp_send:
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* @s: #QTestState instance to operate on.
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* @fmt...: QMP message to send to qemu, formatted like
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* qobject_from_jsonf(). See parse_escape() for what's supported
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* after '%'.
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* qobject_from_jsonf_nofail(). See parse_escape() for what's
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* supported after '%'.
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*
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* Sends a QMP message to QEMU and leaves the response in the stream.
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*/
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@ -99,8 +99,8 @@ void qtest_qmp_send(QTestState *s, const char *fmt, ...);
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* qtest_qmpv:
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* @s: #QTestState instance to operate on.
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* @fmt: QMP message to send to QEMU, formatted like
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* qobject_from_jsonf(). See parse_escape() for what's supported
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* after '%'.
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* qobject_from_jsonf_nofail(). See parse_escape() for what's
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* supported after '%'.
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* @ap: QMP message arguments
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*
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* Sends a QMP message to QEMU and returns the response.
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@ -111,8 +111,8 @@ QDict *qtest_qmpv(QTestState *s, const char *fmt, va_list ap);
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* qtest_qmp_vsend:
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* @s: #QTestState instance to operate on.
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* @fmt: QMP message to send to QEMU, formatted like
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* qobject_from_jsonf(). See parse_escape() for what's supported
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* after '%'.
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* qobject_from_jsonf_nofail(). See parse_escape() for what's
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* supported after '%'.
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* @ap: QMP message arguments
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*
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* Sends a QMP message to QEMU and leaves the response in the stream.
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@ -552,8 +552,8 @@ static inline void qtest_end(void)
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/**
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* qmp:
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* @fmt...: QMP message to send to qemu, formatted like
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* qobject_from_jsonf(). See parse_escape() for what's supported
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* after '%'.
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* qobject_from_jsonf_nofail(). See parse_escape() for what's
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* supported after '%'.
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*
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* Sends a QMP message to QEMU and returns the response.
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*/
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@ -562,8 +562,8 @@ QDict *qmp(const char *fmt, ...);
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/**
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* qmp_send:
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* @fmt...: QMP message to send to qemu, formatted like
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* qobject_from_jsonf(). See parse_escape() for what's supported
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* after '%'.
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* qobject_from_jsonf_nofail(). See parse_escape() for what's
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* supported after '%'.
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*
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* Sends a QMP message to QEMU and leaves the response in the stream.
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*/
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