diff options
Diffstat (limited to 'qemu/qapi/qmp-output-visitor.c')
| -rw-r--r-- | qemu/qapi/qmp-output-visitor.c | 253 |
1 files changed, 0 insertions, 253 deletions
diff --git a/qemu/qapi/qmp-output-visitor.c b/qemu/qapi/qmp-output-visitor.c deleted file mode 100644 index d44c67631..000000000 --- a/qemu/qapi/qmp-output-visitor.c +++ /dev/null @@ -1,253 +0,0 @@ -/* - * Core Definitions for QAPI/QMP Command Registry - * - * Copyright (C) 2012-2016 Red Hat, Inc. - * Copyright IBM, Corp. 2011 - * - * Authors: - * Anthony Liguori <aliguori@us.ibm.com> - * - * This work is licensed under the terms of the GNU LGPL, version 2.1 or later. - * See the COPYING.LIB file in the top-level directory. - * - */ - -#include "qemu/osdep.h" -#include "qapi/qmp-output-visitor.h" -#include "qapi/visitor-impl.h" -#include "qemu/queue.h" -#include "qemu-common.h" -#include "qapi/qmp/types.h" - -typedef struct QStackEntry -{ - QObject *value; - bool is_list_head; - QTAILQ_ENTRY(QStackEntry) node; -} QStackEntry; - -typedef QTAILQ_HEAD(QStack, QStackEntry) QStack; - -struct QmpOutputVisitor -{ - Visitor visitor; - QStack stack; /* Stack of containers that haven't yet been finished */ - QObject *root; /* Root of the output visit */ -}; - -#define qmp_output_add(qov, name, value) \ - qmp_output_add_obj(qov, name, QOBJECT(value)) -#define qmp_output_push(qov, value) qmp_output_push_obj(qov, QOBJECT(value)) - -static QmpOutputVisitor *to_qov(Visitor *v) -{ - return container_of(v, QmpOutputVisitor, visitor); -} - -/* Push @value onto the stack of current QObjects being built */ -static void qmp_output_push_obj(QmpOutputVisitor *qov, QObject *value) -{ - QStackEntry *e = g_malloc0(sizeof(*e)); - - assert(qov->root); - assert(value); - e->value = value; - if (qobject_type(e->value) == QTYPE_QLIST) { - e->is_list_head = true; - } - QTAILQ_INSERT_HEAD(&qov->stack, e, node); -} - -/* Pop a value off the stack of QObjects being built, and return it. */ -static QObject *qmp_output_pop(QmpOutputVisitor *qov) -{ - QStackEntry *e = QTAILQ_FIRST(&qov->stack); - QObject *value; - - assert(e); - QTAILQ_REMOVE(&qov->stack, e, node); - value = e->value; - assert(value); - g_free(e); - return value; -} - -/* Add @value to the current QObject being built. - * If the stack is visiting a dictionary or list, @value is now owned - * by that container. Otherwise, @value is now the root. */ -static void qmp_output_add_obj(QmpOutputVisitor *qov, const char *name, - QObject *value) -{ - QStackEntry *e = QTAILQ_FIRST(&qov->stack); - QObject *cur = e ? e->value : NULL; - - if (!cur) { - /* FIXME we should require the user to reset the visitor, rather - * than throwing away the previous root */ - qobject_decref(qov->root); - qov->root = value; - } else { - switch (qobject_type(cur)) { - case QTYPE_QDICT: - assert(name); - qdict_put_obj(qobject_to_qdict(cur), name, value); - break; - case QTYPE_QLIST: - qlist_append_obj(qobject_to_qlist(cur), value); - break; - default: - g_assert_not_reached(); - } - } -} - -static void qmp_output_start_struct(Visitor *v, const char *name, void **obj, - size_t unused, Error **errp) -{ - QmpOutputVisitor *qov = to_qov(v); - QDict *dict = qdict_new(); - - qmp_output_add(qov, name, dict); - qmp_output_push(qov, dict); -} - -static void qmp_output_end_struct(Visitor *v, Error **errp) -{ - QmpOutputVisitor *qov = to_qov(v); - qmp_output_pop(qov); -} - -static void qmp_output_start_list(Visitor *v, const char *name, Error **errp) -{ - QmpOutputVisitor *qov = to_qov(v); - QList *list = qlist_new(); - - qmp_output_add(qov, name, list); - qmp_output_push(qov, list); -} - -static GenericList *qmp_output_next_list(Visitor *v, GenericList **listp, - size_t size) -{ - GenericList *list = *listp; - QmpOutputVisitor *qov = to_qov(v); - QStackEntry *e = QTAILQ_FIRST(&qov->stack); - - assert(e); - if (e->is_list_head) { - e->is_list_head = false; - return list; - } - - return list ? list->next : NULL; -} - -static void qmp_output_end_list(Visitor *v) -{ - QmpOutputVisitor *qov = to_qov(v); - qmp_output_pop(qov); -} - -static void qmp_output_type_int64(Visitor *v, const char *name, int64_t *obj, - Error **errp) -{ - QmpOutputVisitor *qov = to_qov(v); - qmp_output_add(qov, name, qint_from_int(*obj)); -} - -static void qmp_output_type_uint64(Visitor *v, const char *name, uint64_t *obj, - Error **errp) -{ - /* FIXME: QMP outputs values larger than INT64_MAX as negative */ - QmpOutputVisitor *qov = to_qov(v); - qmp_output_add(qov, name, qint_from_int(*obj)); -} - -static void qmp_output_type_bool(Visitor *v, const char *name, bool *obj, - Error **errp) -{ - QmpOutputVisitor *qov = to_qov(v); - qmp_output_add(qov, name, qbool_from_bool(*obj)); -} - -static void qmp_output_type_str(Visitor *v, const char *name, char **obj, - Error **errp) -{ - QmpOutputVisitor *qov = to_qov(v); - if (*obj) { - qmp_output_add(qov, name, qstring_from_str(*obj)); - } else { - qmp_output_add(qov, name, qstring_from_str("")); - } -} - -static void qmp_output_type_number(Visitor *v, const char *name, double *obj, - Error **errp) -{ - QmpOutputVisitor *qov = to_qov(v); - qmp_output_add(qov, name, qfloat_from_double(*obj)); -} - -static void qmp_output_type_any(Visitor *v, const char *name, QObject **obj, - Error **errp) -{ - QmpOutputVisitor *qov = to_qov(v); - qobject_incref(*obj); - qmp_output_add_obj(qov, name, *obj); -} - -/* Finish building, and return the root object. Will not be NULL. */ -QObject *qmp_output_get_qobject(QmpOutputVisitor *qov) -{ - /* FIXME: we should require that a visit occurred, and that it is - * complete (no starts without a matching end) */ - QObject *obj = qov->root; - if (obj) { - qobject_incref(obj); - } else { - obj = qnull(); - } - return obj; -} - -Visitor *qmp_output_get_visitor(QmpOutputVisitor *v) -{ - return &v->visitor; -} - -void qmp_output_visitor_cleanup(QmpOutputVisitor *v) -{ - QStackEntry *e, *tmp; - - QTAILQ_FOREACH_SAFE(e, &v->stack, node, tmp) { - QTAILQ_REMOVE(&v->stack, e, node); - g_free(e); - } - - qobject_decref(v->root); - g_free(v); -} - -QmpOutputVisitor *qmp_output_visitor_new(void) -{ - QmpOutputVisitor *v; - - v = g_malloc0(sizeof(*v)); - - v->visitor.start_struct = qmp_output_start_struct; - v->visitor.end_struct = qmp_output_end_struct; - v->visitor.start_list = qmp_output_start_list; - v->visitor.next_list = qmp_output_next_list; - v->visitor.end_list = qmp_output_end_list; - v->visitor.type_enum = output_type_enum; - v->visitor.type_int64 = qmp_output_type_int64; - v->visitor.type_uint64 = qmp_output_type_uint64; - v->visitor.type_bool = qmp_output_type_bool; - v->visitor.type_str = qmp_output_type_str; - v->visitor.type_number = qmp_output_type_number; - v->visitor.type_any = qmp_output_type_any; - - QTAILQ_INIT(&v->stack); - - return v; -} |