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4100f3b78a
Commit 4e27e819 introduced optional visitor callbacks for all sorts of int types, but no visitor has supplied any of the callbacks for sizes less than 64 bits. In other words, the generic implementation based on using type_[u]int64() followed by bounds-checking works just fine. In the interest of simplicity, it's easier to make the visitor callback interface not have to worry about the other sizes. Adding some helper functions minimizes the boilerplate required to correct FIXMEs added earlier with regards to questionable reuse of errp, particularly now that we can guarantee from a single file audit that value is unchanged if an error is set. Backports commit 04e070d217b4414f1f91aa8ad25fc0ae7ca0be93 from qemu
67 lines
2.5 KiB
C
67 lines
2.5 KiB
C
/*
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* Core Definitions for QAPI Visitor implementations
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*
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* Copyright (C) 2012-2016 Red Hat, Inc.
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*
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* Author: Paolo Bonizni <pbonzini@redhat.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_IMPL_H
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#define QAPI_VISITOR_IMPL_H
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#include "qapi/error.h"
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#include "qapi/visitor.h"
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struct Visitor
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{
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/* Must be set */
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void (*start_struct)(Visitor *v, void **obj, const char *kind,
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const char *name, size_t size, Error **errp);
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void (*end_struct)(Visitor *v, Error **errp);
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void (*start_implicit_struct)(Visitor *v, void **obj, size_t size,
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Error **errp);
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void (*end_implicit_struct)(Visitor *v);
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void (*start_list)(Visitor *v, const char *name, Error **errp);
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GenericList *(*next_list)(Visitor *v, GenericList **list);
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void (*end_list)(Visitor *v);
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void (*type_enum)(Visitor *v, int *obj, const char * const strings[],
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const char *kind, const char *name, Error **errp);
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/* May be NULL; only needed for input visitors. */
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void (*get_next_type)(Visitor *v, QType *type, bool promote_int,
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const char *name, Error **errp);
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/* Must be set. */
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void (*type_int64)(Visitor *v, int64_t *obj, const char *name,
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Error **errp);
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/* Must be set. */
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void (*type_uint64)(Visitor *v, uint64_t *obj, const char *name,
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Error **errp);
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/* Optional; fallback is type_uint64(). */
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void (*type_size)(Visitor *v, uint64_t *obj, const char *name,
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Error **errp);
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/* Must be set. */
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void (*type_bool)(Visitor *v, bool *obj, const char *name, Error **errp);
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void (*type_str)(Visitor *v, char **obj, const char *name, Error **errp);
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void (*type_number)(Visitor *v, double *obj, const char *name,
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Error **errp);
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void (*type_any)(Visitor *v, QObject **obj, const char *name,
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Error **errp);
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/* May be NULL; most useful for input visitors. */
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void (*optional)(Visitor *v, bool *present, const char *name);
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bool (*start_union)(Visitor *v, bool data_present, Error **errp);
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};
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void input_type_enum(Visitor *v, int *obj, const char * const strings[],
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const char *kind, const char *name, Error **errp);
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void output_type_enum(Visitor *v, int *obj, const char * const strings[],
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const char *kind, const char *name, Error **errp);
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#endif
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