qapi: Make more of qobject_to()
This patch reworks some places which use either qobject_type() checks plus qobject_to(), where the latter alone is sufficient, or NULL checks plus qobject_type() checks where we can simply do a qobject_to() != NULL check. Signed-off-by: Max Reitz <mreitz@redhat.com> Reviewed-by: Alberto Garcia <berto@igalia.com> Message-Id: <20180224154033.29559-6-mreitz@redhat.com> Reviewed-by: Eric Blake <eblake@redhat.com> [eblake: rebase to qobject_to() parameter ordering] Signed-off-by: Eric Blake <eblake@redhat.com>
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@ -339,7 +339,7 @@ static GenericList *qobject_input_next_list(Visitor *v, GenericList *tail,
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QObjectInputVisitor *qiv = to_qiv(v);
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QObjectInputVisitor *qiv = to_qiv(v);
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StackObject *tos = QSLIST_FIRST(&qiv->stack);
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StackObject *tos = QSLIST_FIRST(&qiv->stack);
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assert(tos && tos->obj && qobject_type(tos->obj) == QTYPE_QLIST);
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assert(tos && qobject_to(QList, tos->obj));
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if (!tos->entry) {
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if (!tos->entry) {
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return NULL;
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return NULL;
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@ -353,7 +353,7 @@ static void qobject_input_check_list(Visitor *v, Error **errp)
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QObjectInputVisitor *qiv = to_qiv(v);
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QObjectInputVisitor *qiv = to_qiv(v);
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StackObject *tos = QSLIST_FIRST(&qiv->stack);
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StackObject *tos = QSLIST_FIRST(&qiv->stack);
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assert(tos && tos->obj && qobject_type(tos->obj) == QTYPE_QLIST);
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assert(tos && qobject_to(QList, tos->obj));
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if (tos->entry) {
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if (tos->entry) {
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error_setg(errp, "Only %u list elements expected in %s",
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error_setg(errp, "Only %u list elements expected in %s",
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@ -276,7 +276,8 @@ static void parser_context_free(JSONParserContext *ctxt)
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*/
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*/
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static int parse_pair(JSONParserContext *ctxt, QDict *dict, va_list *ap)
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static int parse_pair(JSONParserContext *ctxt, QDict *dict, va_list *ap)
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{
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{
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QObject *key = NULL, *value;
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QObject *value;
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QString *key = NULL;
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JSONToken *peek, *token;
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JSONToken *peek, *token;
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peek = parser_context_peek_token(ctxt);
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peek = parser_context_peek_token(ctxt);
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@ -285,8 +286,8 @@ static int parse_pair(JSONParserContext *ctxt, QDict *dict, va_list *ap)
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goto out;
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goto out;
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}
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}
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key = parse_value(ctxt, ap);
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key = qobject_to(QString, parse_value(ctxt, ap));
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if (!key || qobject_type(key) != QTYPE_QSTRING) {
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if (!key) {
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parse_error(ctxt, peek, "key is not a string in object");
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parse_error(ctxt, peek, "key is not a string in object");
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goto out;
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goto out;
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}
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}
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@ -308,14 +309,14 @@ static int parse_pair(JSONParserContext *ctxt, QDict *dict, va_list *ap)
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goto out;
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goto out;
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}
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}
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qdict_put_obj(dict, qstring_get_str(qobject_to(QString, key)), value);
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qdict_put_obj(dict, qstring_get_str(key), value);
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qobject_decref(key);
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QDECREF(key);
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return 0;
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return 0;
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out:
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out:
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qobject_decref(key);
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QDECREF(key);
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return -1;
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return -1;
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}
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}
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@ -882,18 +882,20 @@ QObject *qdict_crumple(const QDict *src, Error **errp)
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child = qdict_get(two_level, prefix);
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child = qdict_get(two_level, prefix);
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if (suffix) {
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if (suffix) {
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if (child) {
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QDict *child_dict = qobject_to(QDict, child);
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if (qobject_type(child) != QTYPE_QDICT) {
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if (!child_dict) {
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if (child) {
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error_setg(errp, "Key %s prefix is already set as a scalar",
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error_setg(errp, "Key %s prefix is already set as a scalar",
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prefix);
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prefix);
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goto error;
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goto error;
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}
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}
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} else {
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child = QOBJECT(qdict_new());
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child_dict = qdict_new();
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qdict_put_obj(two_level, prefix, child);
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qdict_put_obj(two_level, prefix, QOBJECT(child_dict));
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}
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}
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qobject_incref(ent->value);
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qobject_incref(ent->value);
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qdict_put_obj(qobject_to(QDict, child), suffix, ent->value);
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qdict_put_obj(child_dict, suffix, ent->value);
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} else {
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} else {
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if (child) {
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if (child) {
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error_setg(errp, "Key %s prefix is already set as a dict",
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error_setg(errp, "Key %s prefix is already set as a dict",
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@ -913,9 +915,9 @@ QObject *qdict_crumple(const QDict *src, Error **errp)
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multi_level = qdict_new();
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multi_level = qdict_new();
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for (ent = qdict_first(two_level); ent != NULL;
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for (ent = qdict_first(two_level); ent != NULL;
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ent = qdict_next(two_level, ent)) {
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ent = qdict_next(two_level, ent)) {
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QDict *dict = qobject_to(QDict, ent->value);
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if (qobject_type(ent->value) == QTYPE_QDICT) {
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if (dict) {
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child = qdict_crumple(qobject_to(QDict, ent->value), errp);
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child = qdict_crumple(dict, errp);
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if (!child) {
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if (!child) {
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goto error;
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goto error;
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}
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}
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