From f4cdf7ca9a1fdcca413157df19753f388a5a224e Mon Sep 17 00:00:00 2001 From: Linus Torvalds Date: Wed, 19 Aug 2026 10:09:22 -0700 Subject: Merge tag 'media/v7.3-1' of git://git.kernel.org/pub/scm/linux/kernel/git/mchehab/linux-media Pull media updates from Mauro Carvalho Chehab: - v4l2-core: added ISP statistics support and per-block validation - v4l2-core: Allow unknown HDR10 white point and luminance - New camera sensors: Sony IMX678 and IMX471m, Himax HM1092 IR sensor - New codec: Milos: VPU v2.0 codec support - isp driver: gained support for Dreamchip RPPX1 ISP framework - vsp1 driver: gained support for RZ/T2H and RZ/N2H - Novalake driver: gained CVS support for new NVL hardware - dvb-core: fix feed leak on failed DMX_ADD_PID - several driver fixes, cleanups and minor improvements * tag 'media/v7.3-1' of git://git.kernel.org/pub/scm/linux/kernel/git/mchehab/linux-media: (308 commits) media: ipu-bridge: check all DMI entries when overriding sensor rotation media: v4l2-async: avoid deleting unlinked ASC entry on link error media: rzg2l-cru: Align bytesperline to hardware DMA stride requirement media: intel/ipu6: fix async notifier cleanup leak on parse error media: staging/ipu7: fix async notifier UAF on probe error path media: amd: isp4: fix self-deadlock in isp4sd_pwron_and_init() error path media: amd: isp4: release partial allocations in isp4if_alloc_fw_gpumem() media: rcar-isp: Fix VSPX reference leaks media: rcar-isp: Release ISPCORE resources media: i2c: imx415: Release runtime PM reference on VBLANK error media: i2c: imx415: Return test pattern write errors media: renesas: vsp1: Declare index variables in for loop statement media: renesas: vsp1: Make reset control optional to support platforms without a reset line media: dt-bindings: media: renesas,vsp1: Document RZ/T2H and RZ/N2H SoCs media: dt-bindings: media: renesas,fcp: Document RZ/T2H and RZ/N2H SoCs media: nxp: imx8-isi: Add additional 32-bit RGB format support media: nxp: imx8-isi: Add 16-bit raw Bayer format support media: nxp: imx8-isi: Implement per-stream reference counting for multiplexed streams media: nxp: imx8-isi: Use BIT_ULL() for 64-bit stream masks media: nxp: imx8-isi: Correct color map between V4L2 and ISI ... --- rust/syn/lifetime.rs | 158 +++++++++++++++++++++++++++++++++++++++++++++++++++ 1 file changed, 158 insertions(+) create mode 100644 rust/syn/lifetime.rs (limited to 'rust/syn/lifetime.rs') diff --git a/rust/syn/lifetime.rs b/rust/syn/lifetime.rs new file mode 100644 index 000000000..24bec7fe9 --- /dev/null +++ b/rust/syn/lifetime.rs @@ -0,0 +1,158 @@ +// SPDX-License-Identifier: Apache-2.0 OR MIT + +#[cfg(feature = "parsing")] +use crate::lookahead; +use proc_macro2::{Ident, Span}; +use std::cmp::Ordering; +use std::fmt::{self, Display}; +use std::hash::{Hash, Hasher}; + +/// A Rust lifetime: `'a`. +/// +/// Lifetime names must conform to the following rules: +/// +/// - Must start with an apostrophe. +/// - Must not consist of just an apostrophe: `'`. +/// - Character after the apostrophe must be `_` or a Unicode code point with +/// the XID_Start property. +/// - All following characters must be Unicode code points with the XID_Continue +/// property. +pub struct Lifetime { + pub apostrophe: Span, + pub ident: Ident, +} + +impl Lifetime { + /// # Panics + /// + /// Panics if the lifetime does not conform to the bulleted rules above. + /// + /// # Invocation + /// + /// ``` + /// # use proc_macro2::Span; + /// # use syn::Lifetime; + /// # + /// # fn f() -> Lifetime { + /// Lifetime::new("'a", Span::call_site()) + /// # } + /// ``` + pub fn new(symbol: &str, span: Span) -> Self { + if !symbol.starts_with('\'') { + panic!( + "lifetime name must start with apostrophe as in \"'a\", got {:?}", + symbol + ); + } + + if symbol == "'" { + panic!("lifetime name must not be empty"); + } + + if !crate::ident::xid_ok(&symbol[1..]) { + panic!("{:?} is not a valid lifetime name", symbol); + } + + Lifetime { + apostrophe: span, + ident: Ident::new(&symbol[1..], span), + } + } + + pub fn span(&self) -> Span { + self.apostrophe + .join(self.ident.span()) + .unwrap_or(self.apostrophe) + } + + pub fn set_span(&mut self, span: Span) { + self.apostrophe = span; + self.ident.set_span(span); + } +} + +impl Display for Lifetime { + fn fmt(&self, formatter: &mut fmt::Formatter) -> fmt::Result { + "'".fmt(formatter)?; + self.ident.fmt(formatter) + } +} + +impl Clone for Lifetime { + fn clone(&self) -> Self { + Lifetime { + apostrophe: self.apostrophe, + ident: self.ident.clone(), + } + } +} + +impl PartialEq for Lifetime { + fn eq(&self, other: &Lifetime) -> bool { + self.ident.eq(&other.ident) + } +} + +impl Eq for Lifetime {} + +impl PartialOrd for Lifetime { + fn partial_cmp(&self, other: &Lifetime) -> Option { + Some(self.cmp(other)) + } +} + +impl Ord for Lifetime { + fn cmp(&self, other: &Lifetime) -> Ordering { + self.ident.cmp(&other.ident) + } +} + +impl Hash for Lifetime { + fn hash(&self, h: &mut H) { + self.ident.hash(h); + } +} + +#[cfg(feature = "parsing")] +pub_if_not_doc! { + #[doc(hidden)] + #[allow(non_snake_case)] + pub fn Lifetime(marker: lookahead::TokenMarker) -> Lifetime { + match marker {} + } +} + +#[cfg(feature = "parsing")] +pub(crate) mod parsing { + use crate::error::Result; + use crate::lifetime::Lifetime; + use crate::parse::{Parse, ParseStream}; + + #[cfg_attr(docsrs, doc(cfg(feature = "parsing")))] + impl Parse for Lifetime { + fn parse(input: ParseStream) -> Result { + input.step(|cursor| { + cursor + .lifetime() + .ok_or_else(|| cursor.error("expected lifetime")) + }) + } + } +} + +#[cfg(feature = "printing")] +mod printing { + use crate::lifetime::Lifetime; + use proc_macro2::{Punct, Spacing, TokenStream}; + use quote::{ToTokens, TokenStreamExt}; + + #[cfg_attr(docsrs, doc(cfg(feature = "printing")))] + impl ToTokens for Lifetime { + fn to_tokens(&self, tokens: &mut TokenStream) { + let mut apostrophe = Punct::new('\'', Spacing::Joint); + apostrophe.set_span(self.apostrophe); + tokens.append(apostrophe); + self.ident.to_tokens(tokens); + } + } +} -- cgit v1.3.1