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4e27e819be
This adds visitor interfaces for fixed-width integers types. Implementing these in visitors is optional, otherwise we fall back to visit_type_int() (int64_t) with some additional bounds checking to avoid integer overflows for cases where the value fetched exceeds the bounds of our target C type. Signed-off-by: Michael Roth <mdroth@linux.vnet.ibm.com> Signed-off-by: Paolo Bonzini <pbonzini@redhat.com> [LE: exclude negative values in uint*_t Visitor interfaces] Signed-off-by: Laszlo Ersek <lersek@redhat.com> [AF: Merged fix by Laszlo] Signed-off-by: Andreas Färber <afaerber@suse.de>
309 lines
7.7 KiB
C
309 lines
7.7 KiB
C
/*
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* Core Definitions for QAPI Visitor Classes
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*
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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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#include "qapi/qapi-visit-core.h"
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#include "qapi/qapi-visit-impl.h"
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void visit_start_handle(Visitor *v, void **obj, const char *kind,
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const char *name, Error **errp)
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{
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if (!error_is_set(errp) && v->start_handle) {
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v->start_handle(v, obj, kind, name, errp);
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}
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}
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void visit_end_handle(Visitor *v, Error **errp)
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{
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if (!error_is_set(errp) && v->end_handle) {
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v->end_handle(v, errp);
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}
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}
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void visit_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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{
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if (!error_is_set(errp)) {
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v->start_struct(v, obj, kind, name, size, errp);
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}
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}
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void visit_end_struct(Visitor *v, Error **errp)
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{
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if (!error_is_set(errp)) {
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v->end_struct(v, errp);
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}
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}
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void visit_start_list(Visitor *v, const char *name, Error **errp)
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{
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if (!error_is_set(errp)) {
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v->start_list(v, name, errp);
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}
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}
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GenericList *visit_next_list(Visitor *v, GenericList **list, Error **errp)
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{
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if (!error_is_set(errp)) {
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return v->next_list(v, list, errp);
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}
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return 0;
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}
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void visit_end_list(Visitor *v, Error **errp)
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{
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if (!error_is_set(errp)) {
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v->end_list(v, errp);
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}
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}
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void visit_start_optional(Visitor *v, bool *present, const char *name,
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Error **errp)
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{
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if (!error_is_set(errp) && v->start_optional) {
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v->start_optional(v, present, name, errp);
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}
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}
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void visit_end_optional(Visitor *v, Error **errp)
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{
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if (!error_is_set(errp) && v->end_optional) {
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v->end_optional(v, errp);
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}
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}
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void visit_type_enum(Visitor *v, int *obj, const char *strings[],
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const char *kind, const char *name, Error **errp)
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{
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if (!error_is_set(errp)) {
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v->type_enum(v, obj, strings, kind, name, errp);
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}
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}
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void visit_type_int(Visitor *v, int64_t *obj, const char *name, Error **errp)
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{
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if (!error_is_set(errp)) {
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v->type_int(v, obj, name, errp);
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}
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}
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void visit_type_uint8(Visitor *v, uint8_t *obj, const char *name, Error **errp)
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{
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int64_t value;
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if (!error_is_set(errp)) {
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if (v->type_uint8) {
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v->type_uint8(v, obj, name, errp);
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} else {
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value = *obj;
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v->type_int(v, &value, name, errp);
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if (value < 0 || value > UINT8_MAX) {
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error_set(errp, QERR_INVALID_PARAMETER_VALUE, name ? name : "null",
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"uint8_t");
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return;
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}
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*obj = value;
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}
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}
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}
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void visit_type_uint16(Visitor *v, uint16_t *obj, const char *name, Error **errp)
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{
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int64_t value;
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if (!error_is_set(errp)) {
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if (v->type_uint16) {
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v->type_uint16(v, obj, name, errp);
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} else {
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value = *obj;
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v->type_int(v, &value, name, errp);
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if (value < 0 || value > UINT16_MAX) {
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error_set(errp, QERR_INVALID_PARAMETER_VALUE, name ? name : "null",
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"uint16_t");
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return;
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}
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*obj = value;
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}
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}
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}
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void visit_type_uint32(Visitor *v, uint32_t *obj, const char *name, Error **errp)
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{
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int64_t value;
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if (!error_is_set(errp)) {
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if (v->type_uint32) {
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v->type_uint32(v, obj, name, errp);
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} else {
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value = *obj;
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v->type_int(v, &value, name, errp);
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if (value < 0 || value > UINT32_MAX) {
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error_set(errp, QERR_INVALID_PARAMETER_VALUE, name ? name : "null",
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"uint32_t");
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return;
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}
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*obj = value;
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}
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}
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}
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void visit_type_uint64(Visitor *v, uint64_t *obj, const char *name, Error **errp)
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{
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int64_t value;
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if (!error_is_set(errp)) {
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if (v->type_uint64) {
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v->type_uint64(v, obj, name, errp);
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} else {
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value = *obj;
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v->type_int(v, &value, name, errp);
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*obj = value;
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}
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}
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}
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void visit_type_int8(Visitor *v, int8_t *obj, const char *name, Error **errp)
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{
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int64_t value;
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if (!error_is_set(errp)) {
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if (v->type_int8) {
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v->type_int8(v, obj, name, errp);
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} else {
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value = *obj;
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v->type_int(v, &value, name, errp);
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if (value < INT8_MIN || value > INT8_MAX) {
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error_set(errp, QERR_INVALID_PARAMETER_VALUE, name ? name : "null",
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"int8_t");
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return;
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}
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*obj = value;
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}
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}
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}
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void visit_type_int16(Visitor *v, int16_t *obj, const char *name, Error **errp)
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{
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int64_t value;
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if (!error_is_set(errp)) {
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if (v->type_int16) {
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v->type_int16(v, obj, name, errp);
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} else {
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value = *obj;
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v->type_int(v, &value, name, errp);
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if (value < INT16_MIN || value > INT16_MAX) {
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error_set(errp, QERR_INVALID_PARAMETER_VALUE, name ? name : "null",
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"int16_t");
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return;
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}
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*obj = value;
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}
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}
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}
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void visit_type_int32(Visitor *v, int32_t *obj, const char *name, Error **errp)
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{
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int64_t value;
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if (!error_is_set(errp)) {
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if (v->type_int32) {
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v->type_int32(v, obj, name, errp);
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} else {
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value = *obj;
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v->type_int(v, &value, name, errp);
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if (value < INT32_MIN || value > INT32_MAX) {
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error_set(errp, QERR_INVALID_PARAMETER_VALUE, name ? name : "null",
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"int32_t");
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return;
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}
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*obj = value;
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}
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}
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}
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void visit_type_int64(Visitor *v, int64_t *obj, const char *name, Error **errp)
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{
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if (!error_is_set(errp)) {
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if (v->type_int64) {
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v->type_int64(v, obj, name, errp);
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} else {
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v->type_int(v, obj, name, errp);
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}
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}
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}
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void visit_type_bool(Visitor *v, bool *obj, const char *name, Error **errp)
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{
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if (!error_is_set(errp)) {
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v->type_bool(v, obj, name, errp);
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}
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}
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void visit_type_str(Visitor *v, char **obj, const char *name, Error **errp)
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{
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if (!error_is_set(errp)) {
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v->type_str(v, obj, name, errp);
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}
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}
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void visit_type_number(Visitor *v, double *obj, const char *name, Error **errp)
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{
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if (!error_is_set(errp)) {
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v->type_number(v, obj, name, errp);
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}
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}
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void output_type_enum(Visitor *v, int *obj, const char *strings[],
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const char *kind, const char *name,
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Error **errp)
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{
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int i = 0;
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int value = *obj;
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char *enum_str;
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assert(strings);
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while (strings[i++] != NULL);
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if (value < 0 || value >= i - 1) {
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error_set(errp, QERR_INVALID_PARAMETER, name ? name : "null");
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return;
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}
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enum_str = (char *)strings[value];
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visit_type_str(v, &enum_str, name, errp);
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}
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void input_type_enum(Visitor *v, int *obj, const char *strings[],
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const char *kind, const char *name,
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Error **errp)
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{
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int64_t value = 0;
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char *enum_str;
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assert(strings);
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visit_type_str(v, &enum_str, name, errp);
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if (error_is_set(errp)) {
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return;
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}
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while (strings[value] != NULL) {
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if (strcmp(strings[value], enum_str) == 0) {
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break;
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}
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value++;
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}
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if (strings[value] == NULL) {
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error_set(errp, QERR_INVALID_PARAMETER, name ? name : "null");
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g_free(enum_str);
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return;
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}
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g_free(enum_str);
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*obj = value;
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}
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