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Fri, 02 May 2025 03:23:33 -0700 (PDT) X-Google-Smtp-Source: AGHT+IHfMXw17xYz1tqsdhpeJ/VG91CpziOEli/SuErCOrID/k3V9+B2fqQEJvOky4PjVjinZ+XBpA== X-Received: by 2002:a05:6000:2209:b0:399:6dc0:f15b with SMTP id ffacd0b85a97d-3a099af15f3mr1294138f8f.48.1746181413173; Fri, 02 May 2025 03:23:33 -0700 (PDT) From: Paolo Bonzini To: qemu-devel@nongnu.org Cc: qemu-rust@nongnu.org Subject: [PATCH 3/9] rust: let bilge use "let ... else" Date: Fri, 2 May 2025 12:23:16 +0200 Message-ID: <20250502102323.104815-4-pbonzini@redhat.com> X-Mailer: git-send-email 2.49.0 In-Reply-To: <20250502102323.104815-1-pbonzini@redhat.com> References: <20250502102323.104815-1-pbonzini@redhat.com> MIME-Version: 1.0 Content-Transfer-Encoding: quoted-printable 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+importer=patchew.org@nongnu.org; helo=lists.gnu.org; Received-SPF: pass client-ip=170.10.133.124; envelope-from=pbonzini@redhat.com; helo=us-smtp-delivery-124.mimecast.com X-Spam_score_int: -26 X-Spam_score: -2.7 X-Spam_bar: -- X-Spam_report: (-2.7 / 5.0 requ) BAYES_00=-1.9, DKIMWL_WL_HIGH=-0.644, 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_H5=0.001, RCVD_IN_MSPIKE_WL=0.001, RCVD_IN_VALIDITY_RPBL_BLOCKED=0.001, RCVD_IN_VALIDITY_SAFE_BLOCKED=0.001, SPF_HELO_NONE=0.001, SPF_PASS=-0.001 autolearn=unavailable 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+importer=patchew.org@nongnu.org Sender: qemu-devel-bounces+importer=patchew.org@nongnu.org X-ZohoMail-DKIM: pass (identity @redhat.com) X-ZM-MESSAGEID: 1746181575715019100 Content-Type: text/plain; charset="utf-8" Signed-off-by: Paolo Bonzini Reviewed-by: Manos Pitsidianakis --- docs/devel/rust.rst | 3 -- subprojects/bilge-impl-0.2-rs.wrap | 2 - .../packagefiles/bilge-impl-1.63.0.patch | 45 ------------------- 3 files changed, 50 deletions(-) delete mode 100644 subprojects/packagefiles/bilge-impl-1.63.0.patch diff --git a/docs/devel/rust.rst b/docs/devel/rust.rst index c7dfba98de1..8167ff49aa9 100644 --- a/docs/devel/rust.rst +++ b/docs/devel/rust.rst @@ -76,9 +76,6 @@ are missing: =20 * ``cast_mut()``/``cast_const()`` (1.65.0). Use ``as`` instead. =20 -* "let ... else" (1.65.0). Use ``if let`` instead. This is currently pat= ched - in QEMU's vendored copy of the bilge crate. - * Generic Associated Types (1.65.0) =20 * ``CStr::from_bytes_with_nul()`` as a ``const`` function (1.72.0). diff --git a/subprojects/bilge-impl-0.2-rs.wrap b/subprojects/bilge-impl-0.= 2-rs.wrap index d14c3dc769b..4ccd376eb98 100644 --- a/subprojects/bilge-impl-0.2-rs.wrap +++ b/subprojects/bilge-impl-0.2-rs.wrap @@ -4,8 +4,6 @@ source_url =3D https://crates.io/api/v1/crates/bilge-impl/0= .2.0/download source_filename =3D bilge-impl-0.2.0.tar.gz source_hash =3D feb11e002038ad243af39c2068c8a72bcf147acf05025dcdb916fcc000= adb2d8 #method =3D cargo -patch_directory =3D bilge-impl-0.2-rs -diff_files =3D bilge-impl-1.63.0.patch =20 # bump this version number on every change to meson.build or the patches: # v2 diff --git a/subprojects/packagefiles/bilge-impl-1.63.0.patch b/subprojects= /packagefiles/bilge-impl-1.63.0.patch deleted file mode 100644 index 987428a6d65..00000000000 --- a/subprojects/packagefiles/bilge-impl-1.63.0.patch +++ /dev/null @@ -1,45 +0,0 @@ ---- a/src/shared/discriminant_assigner.rs -+++ b/src/shared/discriminant_assigner.rs -@@ -26,20 +26,20 @@ - let discriminant_expr =3D &discriminant.1; - let variant_name =3D &variant.ident; -=20 -- let Expr::Lit(ExprLit { lit: Lit::Int(int), .. }) =3D discriminan= t_expr else { -+ if let Expr::Lit(ExprLit { lit: Lit::Int(int), .. }) =3D discrimi= nant_expr { -+ let discriminant_value: u128 =3D int.base10_parse().unwrap_or= _else(unreachable); -+ if discriminant_value > self.max_value() { -+ abort!(variant, "Value of variant exceeds the given numbe= r of bits") -+ } -+ -+ Some(discriminant_value) -+ } else { - abort!( - discriminant_expr, - "variant `{}` is not a number", variant_name; - help =3D "only literal integers currently supported" - ) -- }; -- -- let discriminant_value: u128 =3D int.base10_parse().unwrap_or_els= e(unreachable); -- if discriminant_value > self.max_value() { -- abort!(variant, "Value of variant exceeds the given number of= bits") - } -- -- Some(discriminant_value) - } -=20 - fn assign(&mut self, variant: &Variant) -> u128 { ---- a/src/shared/fallback.rs -+++ b/src/shared/fallback.rs -@@ -22,8 +22,9 @@ - } - Unnamed(fields) =3D> { - let variant_fields =3D fields.unnamed.iter(); -- let Ok(fallback_value) =3D variant_fields.exactly_one() e= lse { -- abort!(variant, "fallback variant must have exactly o= ne field"; help =3D "use only one field or change to a unit variant") -+ let fallback_value =3D match variant_fields.exactly_one()= { -+ Ok(ok) =3D> ok, -+ _ =3D> abort!(variant, "fallback variant must have ex= actly one field"; help =3D "use only one field or change to a unit variant") - }; -=20 - if !is_last_variant { --=20 2.49.0