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qapi: allow sharing enum implementation across visitors 

Most visitors will use the same code for enum parsing.  Move it to
the core.

Signed-off-by: Paolo Bonzini <pbonzini@redhat.com>
This commit is contained in:
Paolo Bonzini 2012-02-09 09:11:52 +01:00
parent 99c7f87826
commit 0f71a1e0c8
4 changed files with 78 additions and 52 deletions
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51
qapi/qapi-visit-core.c
View File

@ -12,6 +12,7 @@
*/
#include "qapi/qapi-visit-core.h"
#include "qapi/qapi-visit-impl.h"
void visit_start_handle(Visitor *v, void **obj, const char *kind,
const char *name, Error **errp)
@ -116,3 +117,53 @@ void visit_type_number(Visitor *v, double *obj, const char *name, Error **errp)
v->type_number(v, obj, name, errp);
}
}
void output_type_enum(Visitor *v, int *obj, const char *strings[],
const char *kind, const char *name,
Error **errp)
{
int i = 0;
int value = *obj;
char *enum_str;
assert(strings);
while (strings[i++] != NULL);
if (value < 0 || value >= i - 1) {
error_set(errp, QERR_INVALID_PARAMETER, name ? name : "null");
return;
}
enum_str = (char *)strings[value];
visit_type_str(v, &enum_str, name, errp);
}
void input_type_enum(Visitor *v, int *obj, const char *strings[],
const char *kind, const char *name,
Error **errp)
{
int64_t value = 0;
char *enum_str;
assert(strings);
visit_type_str(v, &enum_str, name, errp);
if (error_is_set(errp)) {
return;
}
while (strings[value] != NULL) {
if (strcmp(strings[value], enum_str) == 0) {
break;
}
value++;
}
if (strings[value] == NULL) {
error_set(errp, QERR_INVALID_PARAMETER, name ? name : "null");
g_free(enum_str);
return;
}
g_free(enum_str);
*obj = value;
}

23
qapi/qapi-visit-impl.h Normal file
View File

@ -0,0 +1,23 @@
/*
* Core Definitions for QAPI Visitor implementations
*
* Copyright (C) 2012 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/qapi-types-core.h"
#include "qapi/qapi-visit-core.h"
void input_type_enum(Visitor *v, int *obj, const char *strings[],
const char *kind, const char *name, Error **errp);
void output_type_enum(Visitor *v, int *obj, const char *strings[],
const char *kind, const char *name, Error **errp);
#endif

34
qapi/qmp-input-visitor.c
View File

@ -12,6 +12,7 @@
*/
#include "qmp-input-visitor.h"
#include "qapi/qapi-visit-impl.h"
#include "qemu-queue.h"
#include "qemu-common.h"
#include "qemu-objects.h"
@ -217,37 +218,6 @@ static void qmp_input_type_number(Visitor *v, double *obj, const char *name,
*obj = qfloat_get_double(qobject_to_qfloat(qobj));
}
static void qmp_input_type_enum(Visitor *v, int *obj, const char *strings[],
const char *kind, const char *name,
Error **errp)
{
int64_t value = 0;
char *enum_str;
assert(strings);
qmp_input_type_str(v, &enum_str, name, errp);
if (error_is_set(errp)) {
return;
}
while (strings[value] != NULL) {
if (strcmp(strings[value], enum_str) == 0) {
break;
}
value++;
}
if (strings[value] == NULL) {
error_set(errp, QERR_INVALID_PARAMETER, name ? name : "null");
g_free(enum_str);
return;
}
g_free(enum_str);
*obj = value;
}
static void qmp_input_start_optional(Visitor *v, bool *present,
const char *name, Error **errp)
{
@ -288,7 +258,7 @@ QmpInputVisitor *qmp_input_visitor_new(QObject *obj)
v->visitor.start_list = qmp_input_start_list;
v->visitor.next_list = qmp_input_next_list;
v->visitor.end_list = qmp_input_end_list;
v->visitor.type_enum = qmp_input_type_enum;
v->visitor.type_enum = input_type_enum;
v->visitor.type_int = qmp_input_type_int;
v->visitor.type_bool = qmp_input_type_bool;
v->visitor.type_str = qmp_input_type_str;

22
qapi/qmp-output-visitor.c
View File

@ -12,6 +12,7 @@
*/
#include "qmp-output-visitor.h"
#include "qapi/qapi-visit-impl.h"
#include "qemu-queue.h"
#include "qemu-common.h"
#include "qemu-objects.h"
@ -180,25 +181,6 @@ static void qmp_output_type_number(Visitor *v, double *obj, const char *name,
qmp_output_add(qov, name, qfloat_from_double(*obj));
}
static void qmp_output_type_enum(Visitor *v, int *obj, const char *strings[],
const char *kind, const char *name,
Error **errp)
{
int i = 0;
int value = *obj;
char *enum_str;
assert(strings);
while (strings[i++] != NULL);
if (value < 0 || value >= i - 1) {
error_set(errp, QERR_INVALID_PARAMETER, name ? name : "null");
return;
}
enum_str = (char *)strings[value];
qmp_output_type_str(v, &enum_str, name, errp);
}
QObject *qmp_output_get_qobject(QmpOutputVisitor *qov)
{
QObject *obj = qmp_output_first(qov);
@ -239,7 +221,7 @@ QmpOutputVisitor *qmp_output_visitor_new(void)
v->visitor.start_list = qmp_output_start_list;
v->visitor.next_list = qmp_output_next_list;
v->visitor.end_list = qmp_output_end_list;
v->visitor.type_enum = qmp_output_type_enum;
v->visitor.type_enum = output_type_enum;
v->visitor.type_int = qmp_output_type_int;
v->visitor.type_bool = qmp_output_type_bool;
v->visitor.type_str = qmp_output_type_str;