qemu-e2k/qapi/qapi-visit-core.c
Eric Blake 29637a6ee9 qapi: Shorter visits of optional fields
For less code, reflect the determined boolean value of an optional
visit back to the caller instead of making the caller read the
boolean after the fact.

The resulting generated code has the following diff:

|-    visit_optional(v, &has_fdset_id, "fdset-id");
|-    if (has_fdset_id) {
|+    if (visit_optional(v, &has_fdset_id, "fdset-id")) {
|         visit_type_int(v, &fdset_id, "fdset-id", &err);
|         if (err) {
|             goto out;
|         }
|     }

Signed-off-by: Eric Blake <eblake@redhat.com>
Message-Id: <1449033659-25497-10-git-send-email-eblake@redhat.com>
Signed-off-by: Markus Armbruster <armbru@redhat.com>
2015-12-17 08:21:29 +01:00

320 lines
7.7 KiB
C

/*
* Core Definitions for QAPI Visitor Classes
*
* 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-common.h"
#include "qapi/qmp/qobject.h"
#include "qapi/qmp/qerror.h"
#include "qapi/visitor.h"
#include "qapi/visitor-impl.h"
void visit_start_struct(Visitor *v, void **obj, const char *kind,
const char *name, size_t size, Error **errp)
{
v->start_struct(v, obj, kind, name, size, errp);
}
void visit_end_struct(Visitor *v, Error **errp)
{
v->end_struct(v, errp);
}
void visit_start_implicit_struct(Visitor *v, void **obj, size_t size,
Error **errp)
{
if (v->start_implicit_struct) {
v->start_implicit_struct(v, obj, size, errp);
}
}
void visit_end_implicit_struct(Visitor *v, Error **errp)
{
if (v->end_implicit_struct) {
v->end_implicit_struct(v, errp);
}
}
void visit_start_list(Visitor *v, const char *name, Error **errp)
{
v->start_list(v, name, errp);
}
GenericList *visit_next_list(Visitor *v, GenericList **list, Error **errp)
{
return v->next_list(v, list, errp);
}
void visit_end_list(Visitor *v, Error **errp)
{
v->end_list(v, errp);
}
bool visit_start_union(Visitor *v, bool data_present, Error **errp)
{
if (v->start_union) {
return v->start_union(v, data_present, errp);
}
return true;
}
void visit_end_union(Visitor *v, bool data_present, Error **errp)
{
if (v->end_union) {
v->end_union(v, data_present, errp);
}
}
bool visit_optional(Visitor *v, bool *present, const char *name)
{
if (v->optional) {
v->optional(v, present, name);
}
return *present;
}
void visit_get_next_type(Visitor *v, QType *type, bool promote_int,
const char *name, Error **errp)
{
if (v->get_next_type) {
v->get_next_type(v, type, promote_int, name, errp);
}
}
void visit_type_enum(Visitor *v, int *obj, const char * const strings[],
const char *kind, const char *name, Error **errp)
{
v->type_enum(v, obj, strings, kind, name, errp);
}
void visit_type_int(Visitor *v, int64_t *obj, const char *name, Error **errp)
{
v->type_int(v, obj, name, errp);
}
void visit_type_uint8(Visitor *v, uint8_t *obj, const char *name, Error **errp)
{
int64_t value;
if (v->type_uint8) {
v->type_uint8(v, obj, name, errp);
} else {
value = *obj;
v->type_int(v, &value, name, errp);
if (value < 0 || value > UINT8_MAX) {
error_setg(errp, QERR_INVALID_PARAMETER_VALUE,
name ? name : "null", "uint8_t");
return;
}
*obj = value;
}
}
void visit_type_uint16(Visitor *v, uint16_t *obj, const char *name, Error **errp)
{
int64_t value;
if (v->type_uint16) {
v->type_uint16(v, obj, name, errp);
} else {
value = *obj;
v->type_int(v, &value, name, errp);
if (value < 0 || value > UINT16_MAX) {
error_setg(errp, QERR_INVALID_PARAMETER_VALUE,
name ? name : "null", "uint16_t");
return;
}
*obj = value;
}
}
void visit_type_uint32(Visitor *v, uint32_t *obj, const char *name, Error **errp)
{
int64_t value;
if (v->type_uint32) {
v->type_uint32(v, obj, name, errp);
} else {
value = *obj;
v->type_int(v, &value, name, errp);
if (value < 0 || value > UINT32_MAX) {
error_setg(errp, QERR_INVALID_PARAMETER_VALUE,
name ? name : "null", "uint32_t");
return;
}
*obj = value;
}
}
void visit_type_uint64(Visitor *v, uint64_t *obj, const char *name, Error **errp)
{
int64_t value;
if (v->type_uint64) {
v->type_uint64(v, obj, name, errp);
} else {
value = *obj;
v->type_int(v, &value, name, errp);
*obj = value;
}
}
void visit_type_int8(Visitor *v, int8_t *obj, const char *name, Error **errp)
{
int64_t value;
if (v->type_int8) {
v->type_int8(v, obj, name, errp);
} else {
value = *obj;
v->type_int(v, &value, name, errp);
if (value < INT8_MIN || value > INT8_MAX) {
error_setg(errp, QERR_INVALID_PARAMETER_VALUE,
name ? name : "null", "int8_t");
return;
}
*obj = value;
}
}
void visit_type_int16(Visitor *v, int16_t *obj, const char *name, Error **errp)
{
int64_t value;
if (v->type_int16) {
v->type_int16(v, obj, name, errp);
} else {
value = *obj;
v->type_int(v, &value, name, errp);
if (value < INT16_MIN || value > INT16_MAX) {
error_setg(errp, QERR_INVALID_PARAMETER_VALUE,
name ? name : "null", "int16_t");
return;
}
*obj = value;
}
}
void visit_type_int32(Visitor *v, int32_t *obj, const char *name, Error **errp)
{
int64_t value;
if (v->type_int32) {
v->type_int32(v, obj, name, errp);
} else {
value = *obj;
v->type_int(v, &value, name, errp);
if (value < INT32_MIN || value > INT32_MAX) {
error_setg(errp, QERR_INVALID_PARAMETER_VALUE,
name ? name : "null", "int32_t");
return;
}
*obj = value;
}
}
void visit_type_int64(Visitor *v, int64_t *obj, const char *name, Error **errp)
{
if (v->type_int64) {
v->type_int64(v, obj, name, errp);
} else {
v->type_int(v, obj, name, errp);
}
}
void visit_type_size(Visitor *v, uint64_t *obj, const char *name, Error **errp)
{
int64_t value;
if (v->type_size) {
v->type_size(v, obj, name, errp);
} else if (v->type_uint64) {
v->type_uint64(v, obj, name, errp);
} else {
value = *obj;
v->type_int(v, &value, name, errp);
*obj = value;
}
}
void visit_type_bool(Visitor *v, bool *obj, const char *name, Error **errp)
{
v->type_bool(v, obj, name, errp);
}
void visit_type_str(Visitor *v, char **obj, const char *name, Error **errp)
{
v->type_str(v, obj, name, errp);
}
void visit_type_number(Visitor *v, double *obj, const char *name, Error **errp)
{
v->type_number(v, obj, name, errp);
}
void visit_type_any(Visitor *v, QObject **obj, const char *name,
Error **errp)
{
v->type_any(v, obj, name, errp);
}
void output_type_enum(Visitor *v, int *obj, const char * const 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_setg(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 * const strings[],
const char *kind, const char *name,
Error **errp)
{
Error *local_err = NULL;
int64_t value = 0;
char *enum_str;
assert(strings);
visit_type_str(v, &enum_str, name, &local_err);
if (local_err) {
error_propagate(errp, local_err);
return;
}
while (strings[value] != NULL) {
if (strcmp(strings[value], enum_str) == 0) {
break;
}
value++;
}
if (strings[value] == NULL) {
error_setg(errp, QERR_INVALID_PARAMETER, enum_str);
g_free(enum_str);
return;
}
g_free(enum_str);
*obj = value;
}