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bh=mz+GYLR5HMh4DqMM7no2jkMwl/zSjzddevZkTCY7uKY=; b=iijfnsOBWfEgDqf/blUbmEWLIWtU77pd9VIoEn+IdMgofM5eM0Xl8v9wHUd6lWBtAJOgvi 7OBMNNcqEi97kuX5P/nx4Ir2o5SplXMMgEMLk8TfAJLBx0WCD2YjuHc/Xmm59/X6WaE+Id +BF3u0HaE76bINpRLRlQ8CmV0bl1gqQ= X-MC-Unique: pMVcPFwKNDiwOQsOoXxEBA-1 From: marcandre.lureau@redhat.com To: qemu-devel@nongnu.org Cc: armbru@redhat.com, =?UTF-8?q?Marc-Andr=C3=A9=20Lureau?= , Michael Roth Subject: [PATCH v2] qapi: give available enum values as error hint Date: Tue, 7 Mar 2023 17:14:34 +0400 Message-Id: <20230307131434.2509895-1-marcandre.lureau@redhat.com> MIME-Version: 1.0 Content-Type: text/plain; charset="utf-8" Content-Transfer-Encoding: quoted-printable X-Scanned-By: MIMEDefang 3.1 on 10.11.54.3 Received-SPF: pass (zohomail.com: domain of gnu.org designates 209.51.188.17 as permitted sender) client-ip=209.51.188.17; envelope-from=qemu-devel-bounces+importer2=patchew.org@nongnu.org; helo=lists.gnu.org; Received-SPF: pass client-ip=170.10.133.124; envelope-from=marcandre.lureau@redhat.com; helo=us-smtp-delivery-124.mimecast.com X-Spam_score_int: -20 X-Spam_score: -2.1 X-Spam_bar: -- X-Spam_report: (-2.1 / 5.0 requ) BAYES_00=-1.9, DKIMWL_WL_HIGH=-0.001, DKIM_SIGNED=0.1, DKIM_VALID=-0.1, DKIM_VALID_AU=-0.1, DKIM_VALID_EF=-0.1, RCVD_IN_DNSWL_NONE=-0.0001, RCVD_IN_MSPIKE_H2=-0.001, SPF_HELO_NONE=0.001, SPF_PASS=-0.001 autolearn=ham autolearn_force=no X-Spam_action: no action X-BeenThere: qemu-devel@nongnu.org X-Mailman-Version: 2.1.29 Precedence: list List-Id: List-Unsubscribe: , List-Archive: List-Post: List-Help: List-Subscribe: , Errors-To: qemu-devel-bounces+importer2=patchew.org@nongnu.org Sender: qemu-devel-bounces+importer2=patchew.org@nongnu.org X-ZohoMail-DKIM: pass (identity @redhat.com) X-ZM-MESSAGEID: 1678194975245100001 From: Marc-Andr=C3=A9 Lureau This allows for a more pleasant user experience. Before: $ ./qemu-system-x86_64 -display egl-headless,gl=3D qemu-system-x86_64: -display egl-headless,gl=3D: Parameter 'gl' does not ac= cept value '' After: $ ./qemu-system-x86_64 -display egl-headless,gl=3D qemu-system-x86_64: -display egl-headless,gl=3D: Parameter 'gl' does not ac= cept value '' Available: 'off', 'on', 'core', 'es' Signed-off-by: Marc-Andr=C3=A9 Lureau --- qapi/qapi-visit-core.c | 17 +++++++++++++++++ 1 file changed, 17 insertions(+) diff --git a/qapi/qapi-visit-core.c b/qapi/qapi-visit-core.c index 6c13510a2b..45e39ff533 100644 --- a/qapi/qapi-visit-core.c +++ b/qapi/qapi-visit-core.c @@ -392,9 +392,25 @@ static bool output_type_enum(Visitor *v, const char *n= ame, int *obj, return visit_type_str(v, name, &enum_str, errp); } =20 +static void error_append_qapi_enum_hint(Error **errp, const QEnumLookup *l= ookup) +{ + int i; + + error_append_hint(errp, "Available: "); + for (i =3D 0; i < lookup->size; i++) { + error_append_hint(errp, "'%s'", lookup->array[i]); + if (i + 1 < lookup->size) { + error_append_hint(errp, ", "); + } + } + error_append_hint(errp, "\n"); +} + + static bool input_type_enum(Visitor *v, const char *name, int *obj, const QEnumLookup *lookup, Error **errp) { + ERRP_GUARD(); int64_t value; g_autofree char *enum_str =3D NULL; =20 @@ -406,6 +422,7 @@ static bool input_type_enum(Visitor *v, const char *nam= e, int *obj, if (value < 0) { error_setg(errp, "Parameter '%s' does not accept value '%s'", name ? name : "null", enum_str); + error_append_qapi_enum_hint(errp, lookup); return false; } =20 --=20 2.39.2