From d00341af384665d259af475b14c96bb8414df415 Mon Sep 17 00:00:00 2001 From: Eric Blake Date: Tue, 1 Dec 2015 22:20:51 -0700 Subject: [PATCH] qapi: Fix alternates that accept 'number' but not 'int' The QMP input visitor allows integral values to be assigned by promotion to a QTYPE_QFLOAT. However, when parsing an alternate, we did not take this into account, such that an alternate that accepts 'number' and some other type, but not 'int', would reject integral values. With this patch, we now have the following desirable table: alternate has case selected for 'int' 'number' QTYPE_QINT QTYPE_QFLOAT no no error error no yes 'number' 'number' yes no 'int' error yes yes 'int' 'number' While it is unlikely that we will ever use 'number' in an alternate other than in the testsuite, it never hurts to be more precise in what we allow. Signed-off-by: Eric Blake Message-Id: <1449033659-25497-8-git-send-email-eblake@redhat.com> Signed-off-by: Markus Armbruster --- include/qapi/visitor-impl.h | 2 +- include/qapi/visitor.h | 3 ++- qapi/qapi-visit-core.c | 4 ++-- qapi/qmp-input-visitor.c | 5 ++++- scripts/qapi-visit.py | 11 +++++++---- tests/test-qmp-input-visitor.c | 16 ++++++---------- 6 files changed, 22 insertions(+), 19 deletions(-) diff --git a/include/qapi/visitor-impl.h b/include/qapi/visitor-impl.h index 7cd1313129..74196847fa 100644 --- a/include/qapi/visitor-impl.h +++ b/include/qapi/visitor-impl.h @@ -33,7 +33,7 @@ struct Visitor void (*type_enum)(Visitor *v, int *obj, const char * const strings[], const char *kind, const char *name, Error **errp); /* May be NULL; only needed for input visitors. */ - void (*get_next_type)(Visitor *v, QType *type, + void (*get_next_type)(Visitor *v, QType *type, bool promote_int, const char *name, Error **errp); void (*type_int)(Visitor *v, int64_t *obj, const char *name, Error **errp); diff --git a/include/qapi/visitor.h b/include/qapi/visitor.h index 6d25ad27a2..1414de1b0d 100644 --- a/include/qapi/visitor.h +++ b/include/qapi/visitor.h @@ -43,8 +43,9 @@ void visit_optional(Visitor *v, bool *present, const char *name, * Determine the qtype of the item @name in the current object visit. * For input visitors, set *@type to the correct qtype of a qapi * alternate type; for other visitors, leave *@type unchanged. + * If @promote_int, treat integers as QTYPE_FLOAT. */ -void visit_get_next_type(Visitor *v, QType *type, +void visit_get_next_type(Visitor *v, QType *type, bool promote_int, const char *name, Error **errp); void visit_type_enum(Visitor *v, int *obj, const char * const strings[], const char *kind, const char *name, Error **errp); diff --git a/qapi/qapi-visit-core.c b/qapi/qapi-visit-core.c index 850ca034cb..cee76bc649 100644 --- a/qapi/qapi-visit-core.c +++ b/qapi/qapi-visit-core.c @@ -81,11 +81,11 @@ void visit_optional(Visitor *v, bool *present, const char *name, } } -void visit_get_next_type(Visitor *v, QType *type, +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, name, errp); + v->get_next_type(v, type, promote_int, name, errp); } } diff --git a/qapi/qmp-input-visitor.c b/qapi/qmp-input-visitor.c index d398de743d..26b7414178 100644 --- a/qapi/qmp-input-visitor.c +++ b/qapi/qmp-input-visitor.c @@ -208,7 +208,7 @@ static void qmp_input_end_list(Visitor *v, Error **errp) qmp_input_pop(qiv, errp); } -static void qmp_input_get_next_type(Visitor *v, QType *type, +static void qmp_input_get_next_type(Visitor *v, QType *type, bool promote_int, const char *name, Error **errp) { QmpInputVisitor *qiv = to_qiv(v); @@ -219,6 +219,9 @@ static void qmp_input_get_next_type(Visitor *v, QType *type, return; } *type = qobject_type(qobj); + if (promote_int && *type == QTYPE_QINT) { + *type = QTYPE_QFLOAT; + } } static void qmp_input_type_int(Visitor *v, int64_t *obj, const char *name, diff --git a/scripts/qapi-visit.py b/scripts/qapi-visit.py index 4797d6e050..b93690b608 100644 --- a/scripts/qapi-visit.py +++ b/scripts/qapi-visit.py @@ -184,6 +184,11 @@ void visit_type_%(c_name)s(Visitor *v, %(c_name)s *obj, const char *name, Error def gen_visit_alternate(name, variants): + promote_int = 'true' + for var in variants.variants: + if var.type.alternate_qtype() == 'QTYPE_QINT': + promote_int = 'false' + ret = mcgen(''' void visit_type_%(c_name)s(Visitor *v, %(c_name)s **obj, const char *name, Error **errp) @@ -194,16 +199,14 @@ void visit_type_%(c_name)s(Visitor *v, %(c_name)s **obj, const char *name, Error if (err) { goto out; } - visit_get_next_type(v, &(*obj)->type, name, &err); + visit_get_next_type(v, &(*obj)->type, %(promote_int)s, name, &err); if (err) { goto out_obj; } switch ((*obj)->type) { ''', - c_name=c_name(name)) + c_name=c_name(name), promote_int=promote_int) - # FIXME: When 'number' but not 'int' is present in the alternate, we - # should allow QTYPE_INT to promote to QTYPE_FLOAT. for var in variants.variants: ret += mcgen(''' case %(case)s: diff --git a/tests/test-qmp-input-visitor.c b/tests/test-qmp-input-visitor.c index 43b9e18912..b4a5bee6a5 100644 --- a/tests/test-qmp-input-visitor.c +++ b/tests/test-qmp-input-visitor.c @@ -347,20 +347,16 @@ static void test_visitor_in_alternate_number(TestInputVisitorData *data, error_free_or_abort(&err); qapi_free_AltStrBool(asb); - /* FIXME: integer should parse as number */ v = visitor_input_test_init(data, "42"); - visit_type_AltStrNum(v, &asn, NULL, &err); - /* FIXME g_assert_cmpint(asn->type, ==, QTYPE_QFLOAT); */ - /* FIXME g_assert_cmpfloat(asn->u.n, ==, 42); */ - error_free_or_abort(&err); + visit_type_AltStrNum(v, &asn, NULL, &error_abort); + g_assert_cmpint(asn->type, ==, QTYPE_QFLOAT); + g_assert_cmpfloat(asn->u.n, ==, 42); qapi_free_AltStrNum(asn); - /* FIXME: integer should parse as number */ v = visitor_input_test_init(data, "42"); - visit_type_AltNumStr(v, &ans, NULL, &err); - /* FIXME g_assert_cmpint(ans->type, ==, QTYPE_QFLOAT); */ - /* FIXME g_assert_cmpfloat(ans->u.n, ==, 42); */ - error_free_or_abort(&err); + visit_type_AltNumStr(v, &ans, NULL, &error_abort); + g_assert_cmpint(ans->type, ==, QTYPE_QFLOAT); + g_assert_cmpfloat(ans->u.n, ==, 42); qapi_free_AltNumStr(ans); v = visitor_input_test_init(data, "42");