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qapi-visit: Unify struct and union visit

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gen_visit_union() is now just like gen_visit_struct(). Rename
it to gen_visit_object(), use it for structs, and drop
gen_visit_struct(). Output is unchanged.

Backports commit 59d9e84cc94b8268f13ec184acfb997e8f352593 from qemu
This commit is contained in:
Markus Armbruster 2018-02-20 15:55:00 -05:00 committed by Lioncash
parent 155c507ed4
commit 553e946627
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GPG key ID: 4E3C3CC1031BA9C7
1 changed files with 6 additions and 39 deletions
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45
qemu/scripts/qapi-visit.py
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@ -152,40 +152,6 @@ out:
return ret
def gen_visit_struct(name, base, members):
ret = gen_visit_struct_fields(name, base, members, None)
# FIXME: if *obj is NULL on entry, and visit_start_struct() assigns to
# *obj, but then visit_type_FOO_fields() fails, we should clean up *obj
# rather than leaving it non-NULL. As currently written, the caller must
# call qapi_free_FOO() to avoid a memory leak of the partial FOO.
ret += mcgen('''
void visit_type_%(c_name)s(Visitor *v, const char *name, %(c_name)s **obj, Error **errp)
{
Error *err = NULL;
visit_start_struct(v, name, (void **)obj, sizeof(%(c_name)s), &err);
if (err) {
goto out;
}
if (!*obj) {
goto out_obj;
}
visit_type_%(c_name)s_fields(v, obj, &err);
error_propagate(errp, err);
err = NULL;
out_obj:
visit_end_struct(v, &err);
out:
error_propagate(errp, err);
}
''',
c_name=c_name(name))
return ret
def gen_visit_list(name, element_type):
# FIXME: if *obj is NULL on entry, and the first visit_next_list()
# assigns to *obj, while a later one fails, we should clean up *obj
@ -285,9 +251,13 @@ out:
return ret
def gen_visit_union(name, base, members, variants):
def gen_visit_object(name, base, members, variants):
ret = gen_visit_struct_fields(name, base, members, variants)
# FIXME: if *obj is NULL on entry, and visit_start_struct() assigns to
# *obj, but then visit_type_FOO_fields() fails, we should clean up *obj
# rather than leaving it non-NULL. As currently written, the caller must
# call qapi_free_FOO() to avoid a memory leak of the partial FOO.
ret += mcgen('''
void visit_type_%(c_name)s(Visitor *v, const char *name, %(c_name)s **obj, Error **errp)
@ -365,10 +335,7 @@ class QAPISchemaGenVisitVisitor(QAPISchemaVisitor):
def visit_object_type(self, name, info, base, members, variants):
self.decl += gen_visit_decl(name)
if variants:
self.defn += gen_visit_union(name, base, members, variants)
else:
self.defn += gen_visit_struct(name, base, members)
self.defn += gen_visit_object(name, base, members, variants)
def visit_alternate_type(self, name, info, variants):
self.decl += gen_visit_decl(name)