diff options
author | Daniel P. Berrange <berrange@redhat.com> | 2016-09-30 15:45:27 +0100 |
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committer | Markus Armbruster <armbru@redhat.com> | 2016-10-25 16:25:48 +0200 |
commit | b3db211f3c80bb996a704d665fe275619f728bd4 (patch) | |
tree | e34f0cc6f45319406df854423720c90ec8278324 /qapi/qmp-input-visitor.c | |
parent | ebfd93b6803acef1a799ef6c755500087e37496e (diff) |
qapi: rename *qmp-*-visitor* to *qobject-*-visitor*
The QMP visitors have no direct dependency on QMP. It is
valid to use them anywhere that one has a QObject. Rename them
to better reflect their functionality as a generic QObject
to QAPI converter.
This is the first of three parts: rename the files. The next two
parts will rename C identifiers. The split is necessary to make git
rename detection work.
Reviewed-by: Kevin Wolf <kwolf@redhat.com>
Reviewed-by: Eric Blake <eblake@redhat.com>
Signed-off-by: Daniel P. Berrange <berrange@redhat.com>
Reviewed-by: Markus Armbruster <armbru@redhat.com>
[Split into file and identifier rename, two comments touched up]
Signed-off-by: Markus Armbruster <armbru@redhat.com>
Diffstat (limited to 'qapi/qmp-input-visitor.c')
-rw-r--r-- | qapi/qmp-input-visitor.c | 455 |
1 files changed, 0 insertions, 455 deletions
diff --git a/qapi/qmp-input-visitor.c b/qapi/qmp-input-visitor.c deleted file mode 100644 index 37a8e1f931..0000000000 --- a/qapi/qmp-input-visitor.c +++ /dev/null @@ -1,455 +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; /* Object being visited */ - void *qapi; /* sanity check that caller uses same pointer */ - - GHashTable *h; /* If obj is dict: unvisited keys */ - const QListEntry *entry; /* If obj is list: unvisited tail */ - - QSLIST_ENTRY(StackObject) node; -} StackObject; - -struct QmpInputVisitor -{ - Visitor visitor; - - /* Root of visit at visitor creation. */ - QObject *root; - - /* Stack of objects being visited (all entries will be either - * QDict or QList). */ - QSLIST_HEAD(, StackObject) stack; - - /* True to reject parse in visit_end_struct() if unvisited keys remain. */ - 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, Error **errp) -{ - StackObject *tos; - QObject *qobj; - QObject *ret; - - if (QSLIST_EMPTY(&qiv->stack)) { - /* Starting at root, name is ignored. */ - assert(qiv->root); - return qiv->root; - } - - /* We are in a container; find the next element. */ - tos = QSLIST_FIRST(&qiv->stack); - qobj = tos->obj; - assert(qobj); - - if (qobject_type(qobj) == QTYPE_QDICT) { - assert(name); - ret = qdict_get(qobject_to_qdict(qobj), name); - if (tos->h && consume && ret) { - bool removed = g_hash_table_remove(tos->h, name); - assert(removed); - } - if (!ret) { - error_setg(errp, QERR_MISSING_PARAMETER, name); - } - } else { - assert(qobject_type(qobj) == QTYPE_QLIST); - assert(!name); - ret = qlist_entry_obj(tos->entry); - assert(ret); - if (consume) { - tos->entry = qlist_next(tos->entry); - } - } - - return ret; -} - -static void qdict_add_key(const char *key, QObject *obj, void *opaque) -{ - GHashTable *h = opaque; - g_hash_table_insert(h, (gpointer) key, NULL); -} - -static const QListEntry *qmp_input_push(QmpInputVisitor *qiv, QObject *obj, - void *qapi, Error **errp) -{ - GHashTable *h; - StackObject *tos = g_new0(StackObject, 1); - - assert(obj); - tos->obj = obj; - tos->qapi = qapi; - - 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); - tos->h = h; - } else if (qobject_type(obj) == QTYPE_QLIST) { - tos->entry = qlist_first(qobject_to_qlist(obj)); - } - - QSLIST_INSERT_HEAD(&qiv->stack, tos, node); - return tos->entry; -} - - -static void qmp_input_check_struct(Visitor *v, Error **errp) -{ - QmpInputVisitor *qiv = to_qiv(v); - StackObject *tos = QSLIST_FIRST(&qiv->stack); - - assert(tos && !tos->entry); - if (qiv->strict) { - GHashTable *const top_ht = tos->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); - } - } - } -} - -static void qmp_input_stack_object_free(StackObject *tos) -{ - if (tos->h) { - g_hash_table_unref(tos->h); - } - - g_free(tos); -} - -static void qmp_input_pop(Visitor *v, void **obj) -{ - QmpInputVisitor *qiv = to_qiv(v); - StackObject *tos = QSLIST_FIRST(&qiv->stack); - - assert(tos && tos->qapi == obj); - QSLIST_REMOVE_HEAD(&qiv->stack, node); - qmp_input_stack_object_free(tos); -} - -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, errp); - Error *err = NULL; - - if (obj) { - *obj = NULL; - } - if (!qobj) { - return; - } - if (qobject_type(qobj) != QTYPE_QDICT) { - error_setg(errp, QERR_INVALID_PARAMETER_TYPE, name ? name : "null", - "QDict"); - return; - } - - qmp_input_push(qiv, qobj, obj, &err); - if (err) { - error_propagate(errp, err); - return; - } - - if (obj) { - *obj = g_malloc0(size); - } -} - - -static void qmp_input_start_list(Visitor *v, const char *name, - GenericList **list, size_t size, Error **errp) -{ - QmpInputVisitor *qiv = to_qiv(v); - QObject *qobj = qmp_input_get_object(qiv, name, true, errp); - const QListEntry *entry; - - if (!qobj) { - return; - } - if (qobject_type(qobj) != QTYPE_QLIST) { - if (list) { - *list = NULL; - } - error_setg(errp, QERR_INVALID_PARAMETER_TYPE, name ? name : "null", - "list"); - return; - } - - entry = qmp_input_push(qiv, qobj, list, errp); - if (list) { - if (entry) { - *list = g_malloc0(size); - } else { - *list = NULL; - } - } -} - -static GenericList *qmp_input_next_list(Visitor *v, GenericList *tail, - size_t size) -{ - QmpInputVisitor *qiv = to_qiv(v); - StackObject *so = QSLIST_FIRST(&qiv->stack); - - if (!so->entry) { - return NULL; - } - tail->next = g_malloc0(size); - return tail->next; -} - - -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, errp); - - if (!qobj) { - *obj = 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); - QObject *qobj = qmp_input_get_object(qiv, name, true, errp); - QInt *qint; - - if (!qobj) { - return; - } - qint = qobject_to_qint(qobj); - 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); - QObject *qobj = qmp_input_get_object(qiv, name, true, errp); - QInt *qint; - - if (!qobj) { - return; - } - qint = qobject_to_qint(qobj); - 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); - QObject *qobj = qmp_input_get_object(qiv, name, true, errp); - QBool *qbool; - - if (!qobj) { - return; - } - qbool = qobject_to_qbool(qobj); - 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); - QObject *qobj = qmp_input_get_object(qiv, name, true, errp); - QString *qstr; - - *obj = NULL; - if (!qobj) { - return; - } - qstr = qobject_to_qstring(qobj); - 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, errp); - QInt *qint; - QFloat *qfloat; - - if (!qobj) { - return; - } - 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, errp); - - *obj = NULL; - if (!qobj) { - return; - } - - qobject_incref(qobj); - *obj = qobj; -} - -static void qmp_input_type_null(Visitor *v, const char *name, Error **errp) -{ - QmpInputVisitor *qiv = to_qiv(v); - QObject *qobj = qmp_input_get_object(qiv, name, true, errp); - - if (!qobj) { - return; - } - - if (qobject_type(qobj) != QTYPE_QNULL) { - error_setg(errp, QERR_INVALID_PARAMETER_TYPE, name ? name : "null", - "null"); - } -} - -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, false, NULL); - - if (!qobj) { - *present = false; - return; - } - - *present = true; -} - -static void qmp_input_free(Visitor *v) -{ - QmpInputVisitor *qiv = to_qiv(v); - while (!QSLIST_EMPTY(&qiv->stack)) { - StackObject *tos = QSLIST_FIRST(&qiv->stack); - - QSLIST_REMOVE_HEAD(&qiv->stack, node); - qmp_input_stack_object_free(tos); - } - - qobject_decref(qiv->root); - g_free(qiv); -} - -Visitor *qmp_input_visitor_new(QObject *obj, bool strict) -{ - QmpInputVisitor *v; - - assert(obj); - v = g_malloc0(sizeof(*v)); - - v->visitor.type = VISITOR_INPUT; - v->visitor.start_struct = qmp_input_start_struct; - v->visitor.check_struct = qmp_input_check_struct; - v->visitor.end_struct = qmp_input_pop; - v->visitor.start_list = qmp_input_start_list; - v->visitor.next_list = qmp_input_next_list; - v->visitor.end_list = qmp_input_pop; - v->visitor.start_alternate = qmp_input_start_alternate; - 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.type_null = qmp_input_type_null; - v->visitor.optional = qmp_input_optional; - v->visitor.free = qmp_input_free; - v->strict = strict; - - v->root = obj; - qobject_incref(obj); - - return &v->visitor; -} |