unicorn/qemu/include/qapi/visitor-impl.h
Eric Blake 1f54314cbb
qapi: Drop unused 'kind' for struct/enum visit
visit_start_struct() and visit_type_enum() had a 'kind' argument
that was usually set to either the stringized version of the
corresponding qapi type name, or to NULL (although some clients
didn't even get that right). But nothing ever used the argument.
It's even hard to argue that it would be useful in a debugger,
as a stack backtrace also tells which type is being visited.

Therefore, drop the 'kind' argument as dead.

Backports commit 337283dffbb5ad5860ed00408a5fd0665c21be07 from qemu
2018-02-19 23:43:54 -05:00

67 lines
2.5 KiB
C

/*
* Core Definitions for QAPI Visitor implementations
*
* Copyright (C) 2012-2016 Red Hat, Inc.
*
* Author: Paolo Bonizni <pbonzini@redhat.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.
*
*/
#ifndef QAPI_VISITOR_IMPL_H
#define QAPI_VISITOR_IMPL_H
#include "qapi/error.h"
#include "qapi/visitor.h"
struct Visitor
{
/* Must be set */
void (*start_struct)(Visitor *v, const char *name, void **obj,
size_t size, Error **errp);
void (*end_struct)(Visitor *v, Error **errp);
void (*start_implicit_struct)(Visitor *v, void **obj, size_t size,
Error **errp);
void (*end_implicit_struct)(Visitor *v);
void (*start_list)(Visitor *v, const char *name, Error **errp);
GenericList *(*next_list)(Visitor *v, GenericList **list);
void (*end_list)(Visitor *v);
void (*type_enum)(Visitor *v, const char *name, int *obj,
const char *const strings[], Error **errp);
/* May be NULL; only needed for input visitors. */
void (*get_next_type)(Visitor *v, const char *name, QType *type,
bool promote_int, Error **errp);
/* Must be set. */
void (*type_int64)(Visitor *v, const char *name, int64_t *obj,
Error **errp);
/* Must be set. */
void (*type_uint64)(Visitor *v, const char *name, uint64_t *obj,
Error **errp);
/* Optional; fallback is type_uint64(). */
void (*type_size)(Visitor *v, const char *name, uint64_t *obj,
Error **errp);
/* Must be set. */
void (*type_bool)(Visitor *v, const char *name, bool *obj, Error **errp);
void (*type_str)(Visitor *v, const char *name, char **obj, Error **errp);
void (*type_number)(Visitor *v, const char *name, double *obj,
Error **errp);
void (*type_any)(Visitor *v, const char *name, QObject **obj,
Error **errp);
/* May be NULL; most useful for input visitors. */
void (*optional)(Visitor *v, const char *name, bool *present);
bool (*start_union)(Visitor *v, bool data_present, Error **errp);
};
void input_type_enum(Visitor *v, const char *name, int *obj,
const char *const strings[], Error **errp);
void output_type_enum(Visitor *v, const char *name, int *obj,
const char *const strings[], Error **errp);
#endif