mirror of
https://github.com/yuzu-emu/unicorn.git
synced 2024-12-23 05:05:36 +00:00
f008d93ac0
Now that we have a polymorphic visit_free(), we no longer need qmp_input_visitor_cleanup(); which in turn means we no longer need to return a subtype from qmp_input_visitor_new() nor a public upcast function. Generated code changes to qmp-marshal.c look like: |@@ -52,11 +52,10 @@ void qmp_marshal_add_fd(QDict *args, QOb | { | Error *err = NULL; | AddfdInfo *retval; |- QmpInputVisitor *qiv = qmp_input_visitor_new(QOBJECT(args), true); | Visitor *v; | q_obj_add_fd_arg arg = {0}; | |- v = qmp_input_get_visitor(qiv); |+ v = qmp_input_visitor_new(QOBJECT(args), true); | visit_start_struct(v, NULL, NULL, 0, &err); | if (err) { | goto out; Backports commit b70ce1018a251c0c33498d9c927a07cade655a5e from qemu
415 lines
11 KiB
C
415 lines
11 KiB
C
/*
|
|
* Input Visitor
|
|
*
|
|
* 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 */
|
|
} 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). */
|
|
StackObject stack[QIV_STACK_SIZE];
|
|
int nb_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)
|
|
{
|
|
StackObject *tos;
|
|
QObject *qobj;
|
|
QObject *ret;
|
|
|
|
if (!qiv->nb_stack) {
|
|
/* Starting at root, name is ignored. */
|
|
return qiv->root;
|
|
}
|
|
|
|
/* We are in a container; find the next element. */
|
|
tos = &qiv->stack[qiv->nb_stack - 1];
|
|
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);
|
|
}
|
|
} else {
|
|
assert(qobject_type(qobj) == QTYPE_QLIST);
|
|
assert(!name);
|
|
ret = qlist_entry_obj(tos->entry);
|
|
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 = &qiv->stack[qiv->nb_stack];
|
|
|
|
assert(obj);
|
|
if (qiv->nb_stack >= QIV_STACK_SIZE) {
|
|
error_setg(errp, "An internal buffer overran");
|
|
return NULL;
|
|
}
|
|
|
|
tos->obj = obj;
|
|
tos->qapi = qapi;
|
|
assert(!tos->h);
|
|
assert(!tos->entry);
|
|
|
|
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));
|
|
}
|
|
|
|
qiv->nb_stack++;
|
|
return tos->entry;
|
|
}
|
|
|
|
/** Only for qmp_input_pop. */
|
|
static gboolean always_true(gpointer key, gpointer val, gpointer user_pkey)
|
|
{
|
|
*(const char **)user_pkey = (const char *)key;
|
|
return TRUE;
|
|
}
|
|
|
|
static void qmp_input_check_struct(Visitor *v, Error **errp)
|
|
{
|
|
QmpInputVisitor *qiv = to_qiv(v);
|
|
StackObject *tos = &qiv->stack[qiv->nb_stack - 1];
|
|
|
|
assert(qiv->nb_stack > 0);
|
|
|
|
if (qiv->strict) {
|
|
GHashTable *const top_ht = tos->h;
|
|
if (top_ht) {
|
|
if (g_hash_table_size(top_ht)) {
|
|
const char *key;
|
|
g_hash_table_find(top_ht, always_true, (gpointer)&key);
|
|
error_setg(errp, QERR_QMP_EXTRA_MEMBER, key);
|
|
}
|
|
}
|
|
}
|
|
}
|
|
|
|
static void qmp_input_pop(Visitor *v, void **obj)
|
|
{
|
|
QmpInputVisitor *qiv = to_qiv(v);
|
|
StackObject *tos = &qiv->stack[qiv->nb_stack - 1];
|
|
|
|
assert(qiv->nb_stack > 0);
|
|
assert(tos->qapi == obj);
|
|
|
|
if (qiv->strict) {
|
|
GHashTable * const top_ht = qiv->stack[qiv->nb_stack - 1].h;
|
|
if (top_ht) {
|
|
g_hash_table_unref(top_ht);
|
|
}
|
|
tos->h = NULL;
|
|
}
|
|
|
|
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, false);
|
|
Error *err = NULL;
|
|
|
|
if (obj) {
|
|
*obj = 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, 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);
|
|
const QListEntry *entry;
|
|
|
|
if (!qobj || 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 = &qiv->stack[qiv->nb_stack - 1];
|
|
|
|
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);
|
|
|
|
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) {
|
|
*obj = NULL;
|
|
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_type_null(Visitor *v, const char *name, Error **errp)
|
|
{
|
|
QmpInputVisitor *qiv = to_qiv(v);
|
|
QObject *qobj = qmp_input_get_object(qiv, name, true);
|
|
|
|
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, true);
|
|
|
|
if (!qobj) {
|
|
*present = false;
|
|
return;
|
|
}
|
|
|
|
*present = true;
|
|
}
|
|
|
|
static void qmp_input_free(Visitor *v)
|
|
{
|
|
QmpInputVisitor *qiv = to_qiv(v);
|
|
|
|
qobject_decref(qiv->root);
|
|
g_free(qiv);
|
|
}
|
|
|
|
Visitor *qmp_input_visitor_new(QObject *obj, bool strict)
|
|
{
|
|
QmpInputVisitor *v;
|
|
|
|
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_alternate = qmp_input_start_alternate;
|
|
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.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;
|
|
}
|