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qapi: add explicit null to string input and output visitors

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This may be used for deprecated object properties that are kept for
backwards compatibility.

Backports commit a733371214b68881d84725a3c71f60e2faf3b8e2 from qemu
This commit is contained in:
Greg Kurz 2018-03-03 20:32:41 -05:00 committed by Lioncash
parent 18020c2c79
commit a125b35f1f
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GPG key ID: 4E3C3CC1031BA9C7
1 changed files with 11 additions and 0 deletions
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11
qemu/qapi/string-input-visitor.c
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@ -310,6 +310,16 @@ static void parse_type_number(Visitor *v, const char *name, double *obj,
*obj = val;
}
static void parse_type_null(Visitor *v, const char *name, Error **errp)
{
StringInputVisitor *siv = to_siv(v);
if (!siv->string || siv->string[0]) {
error_setg(errp, QERR_INVALID_PARAMETER_TYPE, name ? name : "null",
"null");
}
}
static void string_input_free(Visitor *v)
{
StringInputVisitor *siv = to_siv(v);
@ -333,6 +343,7 @@ Visitor *string_input_visitor_new(const char *str)
v->visitor.type_bool = parse_type_bool;
v->visitor.type_str = parse_type_str;
v->visitor.type_number = parse_type_number;
v->visitor.type_null = parse_type_null;
v->visitor.start_list = start_list;
v->visitor.next_list = next_list;
v->visitor.check_list = check_list;