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qapi: allow sharing enum implementation across visitors

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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
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@ -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;
}