diff options
Diffstat (limited to 'qemu/qapi/qmp-input-visitor.c')
| -rw-r--r-- | qemu/qapi/qmp-input-visitor.c | 371 |
1 files changed, 0 insertions, 371 deletions
diff --git a/qemu/qapi/qmp-input-visitor.c b/qemu/qapi/qmp-input-visitor.c deleted file mode 100644 index 7cd1b777a..000000000 --- a/qemu/qapi/qmp-input-visitor.c +++ /dev/null @@ -1,371 +0,0 @@ -/* - * Input Visitor - * - * 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/error.h" -#include "qapi/qmp-input-visitor.h" -#include "qapi/visitor-impl.h" -#include "qemu/queue.h" -#include "qemu-common.h" -#include "qapi/qmp/types.h" -#include "qapi/qmp/qerror.h" - -#define QIV_STACK_SIZE 1024 - -typedef struct StackObject -{ - QObject *obj; - const QListEntry *entry; - GHashTable *h; -} StackObject; - -struct QmpInputVisitor -{ - Visitor visitor; - StackObject stack[QIV_STACK_SIZE]; - int nb_stack; - bool strict; -}; - -static QmpInputVisitor *to_qiv(Visitor *v) -{ - return container_of(v, QmpInputVisitor, visitor); -} - -static QObject *qmp_input_get_object(QmpInputVisitor *qiv, - const char *name, - bool consume) -{ - QObject *qobj = qiv->stack[qiv->nb_stack - 1].obj; - - if (qobj) { - if (name && qobject_type(qobj) == QTYPE_QDICT) { - if (qiv->stack[qiv->nb_stack - 1].h && consume) { - g_hash_table_remove(qiv->stack[qiv->nb_stack - 1].h, name); - } - return qdict_get(qobject_to_qdict(qobj), name); - } else if (qiv->stack[qiv->nb_stack - 1].entry) { - return qlist_entry_obj(qiv->stack[qiv->nb_stack - 1].entry); - } - } - - return qobj; -} - -static void qdict_add_key(const char *key, QObject *obj, void *opaque) -{ - GHashTable *h = opaque; - g_hash_table_insert(h, (gpointer) key, NULL); -} - -static void qmp_input_push(QmpInputVisitor *qiv, QObject *obj, Error **errp) -{ - GHashTable *h; - - if (qiv->nb_stack >= QIV_STACK_SIZE) { - error_setg(errp, "An internal buffer overran"); - return; - } - - qiv->stack[qiv->nb_stack].obj = obj; - qiv->stack[qiv->nb_stack].entry = NULL; - qiv->stack[qiv->nb_stack].h = NULL; - - if (qiv->strict && qobject_type(obj) == QTYPE_QDICT) { - h = g_hash_table_new(g_str_hash, g_str_equal); - qdict_iter(qobject_to_qdict(obj), qdict_add_key, h); - qiv->stack[qiv->nb_stack].h = h; - } - - qiv->nb_stack++; -} - - -static void qmp_input_pop(QmpInputVisitor *qiv, Error **errp) -{ - assert(qiv->nb_stack > 0); - - if (qiv->strict) { - GHashTable * const top_ht = qiv->stack[qiv->nb_stack - 1].h; - if (top_ht) { - GHashTableIter iter; - const char *key; - - g_hash_table_iter_init(&iter, top_ht); - if (g_hash_table_iter_next(&iter, (void **)&key, NULL)) { - error_setg(errp, QERR_QMP_EXTRA_MEMBER, key); - } - g_hash_table_unref(top_ht); - } - } - - qiv->nb_stack--; -} - -static void qmp_input_start_struct(Visitor *v, const char *name, void **obj, - size_t size, Error **errp) -{ - QmpInputVisitor *qiv = to_qiv(v); - QObject *qobj = qmp_input_get_object(qiv, name, true); - Error *err = NULL; - - if (!qobj || qobject_type(qobj) != QTYPE_QDICT) { - error_setg(errp, QERR_INVALID_PARAMETER_TYPE, name ? name : "null", - "QDict"); - return; - } - - qmp_input_push(qiv, qobj, &err); - if (err) { - error_propagate(errp, err); - return; - } - - if (obj) { - *obj = g_malloc0(size); - } -} - -static void qmp_input_end_struct(Visitor *v, Error **errp) -{ - QmpInputVisitor *qiv = to_qiv(v); - - qmp_input_pop(qiv, errp); -} - -static void qmp_input_start_list(Visitor *v, const char *name, Error **errp) -{ - QmpInputVisitor *qiv = to_qiv(v); - QObject *qobj = qmp_input_get_object(qiv, name, true); - - if (!qobj || qobject_type(qobj) != QTYPE_QLIST) { - error_setg(errp, QERR_INVALID_PARAMETER_TYPE, name ? name : "null", - "list"); - return; - } - - qmp_input_push(qiv, qobj, errp); -} - -static GenericList *qmp_input_next_list(Visitor *v, GenericList **list, - size_t size) -{ - QmpInputVisitor *qiv = to_qiv(v); - GenericList *entry; - StackObject *so = &qiv->stack[qiv->nb_stack - 1]; - bool first; - - if (so->entry == NULL) { - so->entry = qlist_first(qobject_to_qlist(so->obj)); - first = true; - } else { - so->entry = qlist_next(so->entry); - first = false; - } - - if (so->entry == NULL) { - return NULL; - } - - entry = g_malloc0(size); - if (first) { - *list = entry; - } else { - (*list)->next = entry; - } - - return entry; -} - -static void qmp_input_end_list(Visitor *v) -{ - QmpInputVisitor *qiv = to_qiv(v); - - qmp_input_pop(qiv, &error_abort); -} - -static void qmp_input_start_alternate(Visitor *v, const char *name, - GenericAlternate **obj, size_t size, - bool promote_int, Error **errp) -{ - QmpInputVisitor *qiv = to_qiv(v); - QObject *qobj = qmp_input_get_object(qiv, name, false); - - if (!qobj) { - *obj = NULL; - error_setg(errp, QERR_MISSING_PARAMETER, name ? name : "null"); - return; - } - *obj = g_malloc0(size); - (*obj)->type = qobject_type(qobj); - if (promote_int && (*obj)->type == QTYPE_QINT) { - (*obj)->type = QTYPE_QFLOAT; - } -} - -static void qmp_input_type_int64(Visitor *v, const char *name, int64_t *obj, - Error **errp) -{ - QmpInputVisitor *qiv = to_qiv(v); - QInt *qint = qobject_to_qint(qmp_input_get_object(qiv, name, true)); - - if (!qint) { - error_setg(errp, QERR_INVALID_PARAMETER_TYPE, name ? name : "null", - "integer"); - return; - } - - *obj = qint_get_int(qint); -} - -static void qmp_input_type_uint64(Visitor *v, const char *name, uint64_t *obj, - Error **errp) -{ - /* FIXME: qobject_to_qint mishandles values over INT64_MAX */ - QmpInputVisitor *qiv = to_qiv(v); - QInt *qint = qobject_to_qint(qmp_input_get_object(qiv, name, true)); - - if (!qint) { - error_setg(errp, QERR_INVALID_PARAMETER_TYPE, name ? name : "null", - "integer"); - return; - } - - *obj = qint_get_int(qint); -} - -static void qmp_input_type_bool(Visitor *v, const char *name, bool *obj, - Error **errp) -{ - QmpInputVisitor *qiv = to_qiv(v); - QBool *qbool = qobject_to_qbool(qmp_input_get_object(qiv, name, true)); - - if (!qbool) { - error_setg(errp, QERR_INVALID_PARAMETER_TYPE, name ? name : "null", - "boolean"); - return; - } - - *obj = qbool_get_bool(qbool); -} - -static void qmp_input_type_str(Visitor *v, const char *name, char **obj, - Error **errp) -{ - QmpInputVisitor *qiv = to_qiv(v); - QString *qstr = qobject_to_qstring(qmp_input_get_object(qiv, name, true)); - - if (!qstr) { - error_setg(errp, QERR_INVALID_PARAMETER_TYPE, name ? name : "null", - "string"); - return; - } - - *obj = g_strdup(qstring_get_str(qstr)); -} - -static void qmp_input_type_number(Visitor *v, const char *name, double *obj, - Error **errp) -{ - QmpInputVisitor *qiv = to_qiv(v); - QObject *qobj = qmp_input_get_object(qiv, name, true); - QInt *qint; - QFloat *qfloat; - - qint = qobject_to_qint(qobj); - if (qint) { - *obj = qint_get_int(qobject_to_qint(qobj)); - return; - } - - qfloat = qobject_to_qfloat(qobj); - if (qfloat) { - *obj = qfloat_get_double(qobject_to_qfloat(qobj)); - return; - } - - error_setg(errp, QERR_INVALID_PARAMETER_TYPE, name ? name : "null", - "number"); -} - -static void qmp_input_type_any(Visitor *v, const char *name, QObject **obj, - Error **errp) -{ - QmpInputVisitor *qiv = to_qiv(v); - QObject *qobj = qmp_input_get_object(qiv, name, true); - - qobject_incref(qobj); - *obj = qobj; -} - -static void qmp_input_optional(Visitor *v, const char *name, bool *present) -{ - QmpInputVisitor *qiv = to_qiv(v); - QObject *qobj = qmp_input_get_object(qiv, name, true); - - if (!qobj) { - *present = false; - return; - } - - *present = true; -} - -Visitor *qmp_input_get_visitor(QmpInputVisitor *v) -{ - return &v->visitor; -} - -void qmp_input_visitor_cleanup(QmpInputVisitor *v) -{ - qobject_decref(v->stack[0].obj); - g_free(v); -} - -QmpInputVisitor *qmp_input_visitor_new(QObject *obj) -{ - QmpInputVisitor *v; - - v = g_malloc0(sizeof(*v)); - - v->visitor.start_struct = qmp_input_start_struct; - v->visitor.end_struct = qmp_input_end_struct; - v->visitor.start_list = qmp_input_start_list; - v->visitor.next_list = qmp_input_next_list; - v->visitor.end_list = qmp_input_end_list; - v->visitor.start_alternate = qmp_input_start_alternate; - v->visitor.type_enum = input_type_enum; - v->visitor.type_int64 = qmp_input_type_int64; - v->visitor.type_uint64 = qmp_input_type_uint64; - v->visitor.type_bool = qmp_input_type_bool; - v->visitor.type_str = qmp_input_type_str; - v->visitor.type_number = qmp_input_type_number; - v->visitor.type_any = qmp_input_type_any; - v->visitor.optional = qmp_input_optional; - - qmp_input_push(v, obj, NULL); - qobject_incref(obj); - - return v; -} - -QmpInputVisitor *qmp_input_visitor_new_strict(QObject *obj) -{ - QmpInputVisitor *v; - - v = qmp_input_visitor_new(obj); - v->strict = true; - - return v; -} |