08f9541dec
No backend was setting an error when ending the visit of a list or implicit struct, or when moving to the next list node. Make the callers a bit easier to follow by making this a part of the contract, and removing the errp argument - callers can then unconditionally end an object as part of cleanup without having to think about whether a second error is dominated by a first, because there is no second error. A later patch will then tackle the larger task of splitting visit_end_struct(), which can indeed set an error. Signed-off-by: Eric Blake <eblake@redhat.com> Message-Id: <1454075341-13658-24-git-send-email-eblake@redhat.com> Signed-off-by: Markus Armbruster <armbru@redhat.com>
86 lines
3.3 KiB
C
86 lines
3.3 KiB
C
/*
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* Core Definitions for QAPI Visitor Classes
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*
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* Copyright (C) 2012-2016 Red Hat, Inc.
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* Copyright IBM, Corp. 2011
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*
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* Authors:
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* Anthony Liguori <aliguori@us.ibm.com>
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*
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* This work is licensed under the terms of the GNU LGPL, version 2.1 or later.
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* See the COPYING.LIB file in the top-level directory.
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*
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*/
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#ifndef QAPI_VISITOR_CORE_H
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#define QAPI_VISITOR_CORE_H
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#include "qemu/typedefs.h"
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#include "qapi/qmp/qobject.h"
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#include "qapi/error.h"
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#include <stdlib.h>
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typedef struct GenericList
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{
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union {
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void *value;
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uint64_t padding;
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};
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struct GenericList *next;
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} GenericList;
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void visit_start_struct(Visitor *v, const char *name, void **obj,
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size_t size, Error **errp);
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void visit_end_struct(Visitor *v, Error **errp);
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void visit_start_implicit_struct(Visitor *v, void **obj, size_t size,
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Error **errp);
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void visit_end_implicit_struct(Visitor *v);
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void visit_start_list(Visitor *v, const char *name, Error **errp);
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GenericList *visit_next_list(Visitor *v, GenericList **list);
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void visit_end_list(Visitor *v);
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/**
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* Check if an optional member @name of an object needs visiting.
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* For input visitors, set *@present according to whether the
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* corresponding visit_type_*() needs calling; for other visitors,
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* leave *@present unchanged. Return *@present for convenience.
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*/
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bool visit_optional(Visitor *v, const char *name, bool *present);
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/**
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* Determine the qtype of the item @name in the current object visit.
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* For input visitors, set *@type to the correct qtype of a qapi
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* alternate type; for other visitors, leave *@type unchanged.
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* If @promote_int, treat integers as QTYPE_FLOAT.
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*/
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void visit_get_next_type(Visitor *v, const char *name, QType *type,
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bool promote_int, Error **errp);
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void visit_type_enum(Visitor *v, const char *name, int *obj,
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const char *const strings[], Error **errp);
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void visit_type_int(Visitor *v, const char *name, int64_t *obj, Error **errp);
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void visit_type_uint8(Visitor *v, const char *name, uint8_t *obj,
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Error **errp);
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void visit_type_uint16(Visitor *v, const char *name, uint16_t *obj,
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Error **errp);
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void visit_type_uint32(Visitor *v, const char *name, uint32_t *obj,
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Error **errp);
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void visit_type_uint64(Visitor *v, const char *name, uint64_t *obj,
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Error **errp);
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void visit_type_int8(Visitor *v, const char *name, int8_t *obj, Error **errp);
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void visit_type_int16(Visitor *v, const char *name, int16_t *obj,
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Error **errp);
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void visit_type_int32(Visitor *v, const char *name, int32_t *obj,
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Error **errp);
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void visit_type_int64(Visitor *v, const char *name, int64_t *obj,
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Error **errp);
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void visit_type_size(Visitor *v, const char *name, uint64_t *obj,
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Error **errp);
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void visit_type_bool(Visitor *v, const char *name, bool *obj, Error **errp);
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void visit_type_str(Visitor *v, const char *name, char **obj, Error **errp);
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void visit_type_number(Visitor *v, const char *name, double *obj,
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Error **errp);
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void visit_type_any(Visitor *v, const char *name, QObject **obj, Error **errp);
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bool visit_start_union(Visitor *v, bool data_present, Error **errp);
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#endif
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