introduce doc_auto_cfg

Cargo.toml

@@ -62,4 +62,4 @@ timelib = ["dep:time"]
 
 [package.metadata.docs.rs]
 all-features = true
-rustdoc-args = ["--cfg", "doc_cfg", "--generate-link-to-definition"]
+rustdoc-args = ["--cfg", "docsrs", "--generate-link-to-definition"]

release-checklist.md

@@ -4,7 +4,7 @@ Checklist for new releases
 # Pre-Release
 
 1. Make sure any new modules are documented sufficiently enough and check docs with
-   `cargo +nightly doc --all-features --config 'rustdocflags=["--cfg", "doc_cfg"]' --open`.
+   `cargo +nightly doc --all-features --config 'build.rustdocflags=["--cfg", "docsrs"]' --open`.
 2. Bump version specifier in `Cargo.toml`.
 3. Update `CHANGELOG.md`: Convert `unreleased` section into version section with date and add new
    `unreleased` section.

src/cfdp/lv.rs

@@ -88,7 +88,6 @@ impl<'data> Lv<'data> {
     /// Helper function to build a string LV. This is especially useful for the file or directory
     /// path LVs
     #[cfg(feature = "std")]
-    #[cfg_attr(doc_cfg, doc(cfg(feature = "std")))]
     pub fn new_from_string(string: &'data String) -> Result<Lv<'data>, TlvLvError> {
         Self::new(string.as_bytes())
     }

src/ecss/tc.rs

@@ -374,7 +374,6 @@ pub mod legacy_tc {
         }
 
         #[cfg(feature = "alloc")]
-        #[cfg_attr(doc_cfg, doc(cfg(feature = "alloc")))]
         pub fn append_to_vec(&self, vec: &mut Vec<u8>) -> Result<usize, PusError> {
             let sph_zc = crate::zc::SpHeader::from(self.sp_header);
             let appended_len = PUS_TC_MIN_LEN_WITHOUT_APP_DATA + self.app_data.len();
@@ -654,7 +653,6 @@ impl<'raw_data> PusTcCreator<'raw_data> {
     }
 
     #[cfg(feature = "alloc")]
-    #[cfg_attr(doc_cfg, doc(cfg(feature = "alloc")))]
     pub fn append_to_vec(&self, vec: &mut Vec<u8>) -> Result<usize, PusError> {
         let sph_zc = crate::zc::SpHeader::from(self.sp_header);
         let mut appended_len = PUS_TC_MIN_LEN_WITHOUT_APP_DATA;

src/ecss/tm.rs

@@ -341,7 +341,6 @@ pub mod legacy_tm {
 
         /// Append the raw PUS byte representation to a provided [alloc::vec::Vec]
         #[cfg(feature = "alloc")]
-        #[cfg_attr(doc_cfg, doc(cfg(feature = "alloc")))]
         pub fn append_to_vec(&self, vec: &mut Vec<u8>) -> Result<usize, PusError> {
             let sph_zc = crate::zc::SpHeader::from(self.sp_header);
             let mut appended_len = PUS_TM_MIN_LEN_WITHOUT_SOURCE_DATA;
@@ -662,7 +661,6 @@ impl<'raw_data> PusTmCreator<'raw_data> {
 
     /// Append the raw PUS byte representation to a provided [alloc::vec::Vec]
     #[cfg(feature = "alloc")]
-    #[cfg_attr(doc_cfg, doc(cfg(feature = "alloc")))]
     pub fn append_to_vec(&self, vec: &mut Vec<u8>) -> Result<usize, PusError> {
         let sph_zc = crate::zc::SpHeader::from(self.sp_header);
         let mut appended_len = PUS_TM_MIN_LEN_WITHOUT_SOURCE_DATA + self.sec_header.timestamp.len();

src/lib.rs

@@ -55,7 +55,7 @@
 //! println!("{:x?}", &ccsds_buf[0..6]);
 //! ```
 #![no_std]
-#![cfg_attr(doc_cfg, feature(doc_cfg))]
+#![cfg_attr(docsrs, feature(doc_auto_cfg))]
 #[cfg(feature = "alloc")]
 extern crate alloc;
 #[cfg(any(feature = "std", test))]

src/time/ascii.rs

@@ -40,13 +40,11 @@ pub mod alloc_mod_chrono {
     };
 
     /// Generates a time code formatter using the [FMT_STR_CODE_A_WITH_SIZE] format.
-    #[cfg_attr(doc_cfg, doc(cfg(all(feature = "alloc", feature = "chrono"))))]
     pub fn generate_time_code_a(date: &DateTime<Utc>) -> DelayedFormat<StrftimeItems<'static>> {
         date.format(FMT_STR_CODE_A_WITH_SIZE.0)
     }
 
     /// Generates a time code formatter using the [FMT_STR_CODE_A_TERMINATED_WITH_SIZE] format.
-    #[cfg_attr(doc_cfg, doc(cfg(all(feature = "alloc", feature = "chrono"))))]
     pub fn generate_time_code_a_terminated(
         date: &DateTime<Utc>,
     ) -> DelayedFormat<StrftimeItems<'static>> {
@@ -54,13 +52,11 @@ pub mod alloc_mod_chrono {
     }
 
     /// Generates a time code formatter using the [FMT_STR_CODE_B_WITH_SIZE] format.
-    #[cfg_attr(doc_cfg, doc(cfg(all(feature = "alloc", feature = "chrono"))))]
     pub fn generate_time_code_b(date: &DateTime<Utc>) -> DelayedFormat<StrftimeItems<'static>> {
         date.format(FMT_STR_CODE_B_WITH_SIZE.0)
     }
 
     /// Generates a time code formatter using the [FMT_STR_CODE_B_TERMINATED_WITH_SIZE] format.
-    #[cfg_attr(doc_cfg, doc(cfg(all(feature = "alloc", feature = "chrono"))))]
     pub fn generate_time_code_b_terminated(
         date: &DateTime<Utc>,
     ) -> DelayedFormat<StrftimeItems<'static>> {

src/time/cds.rs

@@ -434,13 +434,10 @@ impl CdsConverter for ConversionFromNow {
 }
 
 #[cfg(feature = "alloc")]
-#[cfg_attr(doc_cfg, doc(cfg(feature = "alloc")))]
 pub trait DynCdsTimeProvider: CcsdsTimeProvider + CdsTimestamp + TimeWriter + Any {}
 #[cfg(feature = "alloc")]
-#[cfg_attr(doc_cfg, doc(cfg(feature = "alloc")))]
 impl DynCdsTimeProvider for CdsTime<DaysLen16Bits> {}
 #[cfg(feature = "alloc")]
-#[cfg_attr(doc_cfg, doc(cfg(feature = "alloc")))]
 impl DynCdsTimeProvider for CdsTime<DaysLen24Bits> {}
 
 /// This function returns the correct [CdsTime] instance from a raw byte array
@@ -470,7 +467,6 @@ impl DynCdsTimeProvider for CdsTime<DaysLen24Bits> {}
 /// }
 /// ```
 #[cfg(feature = "alloc")]
-#[cfg_attr(doc_cfg, doc(cfg(feature = "alloc")))]
 pub fn get_dyn_time_provider_from_bytes(
     buf: &[u8],
 ) -> Result<Box<dyn DynCdsTimeProvider>, TimestampError> {
@@ -776,7 +772,6 @@ impl<ProvidesDaysLen: ProvidesDaysLength> CdsTime<ProvidesDaysLen> {
     }
 
     #[cfg(feature = "std")]
-    #[cfg_attr(doc_cfg, doc(cfg(feature = "std")))]
     pub fn update_from_now(&mut self) -> Result<(), StdTimestampError> {
         let conversion_from_now = self.generic_conversion_from_now()?;
         let ccsds_days: ProvidesDaysLen::FieldType = conversion_from_now
@@ -812,7 +807,6 @@ impl CdsTime<DaysLen24Bits> {
 
     /// Generate a time stamp from the current time using the system clock.
     #[cfg(feature = "std")]
-    #[cfg_attr(doc_cfg, doc(cfg(feature = "std")))]
     pub fn from_now_with_u24_days() -> Result<Self, StdTimestampError> {
         Self::from_now_generic(LengthOfDaySegment::Long24Bits)
     }
@@ -863,14 +857,12 @@ impl CdsTime<DaysLen24Bits> {
 
     /// Like [Self::from_now_with_u24_days] but with microsecond sub-millisecond precision.
     #[cfg(feature = "std")]
-    #[cfg_attr(doc_cfg, doc(cfg(feature = "std")))]
     pub fn from_now_with_u24_days_us_precision() -> Result<Self, StdTimestampError> {
         Self::from_now_generic_us_prec(LengthOfDaySegment::Long24Bits)
     }
 
     /// Like [Self::from_now_with_u24_days] but with picoseconds sub-millisecond precision.
     #[cfg(feature = "std")]
-    #[cfg_attr(doc_cfg, doc(cfg(feature = "std")))]
     pub fn from_now_with_u24_days_ps_precision() -> Result<Self, StdTimestampError> {
         Self::from_now_generic_us_prec(LengthOfDaySegment::Long24Bits)
     }
@@ -923,7 +915,6 @@ impl CdsTime<DaysLen16Bits> {
 
     /// Generate a time stamp from the current time using the system clock.
     #[cfg(feature = "std")]
-    #[cfg_attr(doc_cfg, doc(cfg(feature = "std")))]
     pub fn from_now_with_u16_days() -> Result<Self, StdTimestampError> {
         Self::from_now_generic(LengthOfDaySegment::Short16Bits)
     }
@@ -960,14 +951,12 @@ impl CdsTime<DaysLen16Bits> {
 
     /// Like [Self::from_now_with_u16_days] but with microsecond sub-millisecond precision.
     #[cfg(feature = "std")]
-    #[cfg_attr(doc_cfg, doc(cfg(feature = "std")))]
     pub fn from_now_with_u16_days_us_precision() -> Result<Self, StdTimestampError> {
         Self::from_now_generic_us_prec(LengthOfDaySegment::Short16Bits)
     }
 
     /// Like [Self::from_now_with_u16_days] but with picosecond sub-millisecond precision.
     #[cfg(feature = "std")]
-    #[cfg_attr(doc_cfg, doc(cfg(feature = "std")))]
     pub fn from_now_with_u16_days_ps_precision() -> Result<Self, StdTimestampError> {
         Self::from_now_generic_ps_prec(LengthOfDaySegment::Short16Bits)
     }

src/time/cuc.rs

@@ -341,7 +341,6 @@ impl CucTime {
     /// must be applied on top of the UTC based time retrieved from the system in addition to the
     /// conversion to the CCSDS epoch.
     #[cfg(feature = "std")]
-    #[cfg_attr(doc_cfg, doc(cfg(feature = "std")))]
     pub fn from_now(
         fraction_resolution: FractionalResolution,
         leap_seconds: u32,
@@ -373,7 +372,6 @@ impl CucTime {
     /// must be applied on top of the UTC based time retrieved from the system in addition to the
     /// conversion to the CCSDS epoch.
     #[cfg(feature = "std")]
-    #[cfg_attr(doc_cfg, doc(cfg(feature = "std")))]
     pub fn update_from_now(&mut self, leap_seconds: u32) -> Result<(), StdTimestampError> {
         let now = SystemTime::now().duration_since(SystemTime::UNIX_EPOCH)?;
         self.counter.1 = unix_epoch_to_ccsds_epoch(now.as_secs() as i64) as u32;
@@ -393,7 +391,6 @@ impl CucTime {
     }
 
     #[cfg(feature = "chrono")]
-    #[cfg_attr(doc_cfg, doc(cfg(feature = "chrono")))]
     pub fn from_chrono_date_time(
         dt: &chrono::DateTime<chrono::Utc>,
         res: FractionalResolution,

src/time/mod.rs

@@ -127,7 +127,6 @@ impl From<cuc::CucError> for TimestampError {
 }
 
 #[cfg(feature = "std")]
-#[cfg_attr(doc_cfg, doc(cfg(feature = "std")))]
 pub mod std_mod {
     use crate::time::TimestampError;
     use std::time::SystemTimeError;
@@ -135,7 +134,7 @@ pub mod std_mod {
 
     #[derive(Debug, Clone, Error)]
     pub enum StdTimestampError {
-        #[error("system time error: {0}")]
+        #[error("system time error: {0:?}")]
         SystemTime(#[from] SystemTimeError),
         #[error("timestamp error: {0}")]
         Timestamp(#[from] TimestampError),
@@ -143,7 +142,6 @@ pub mod std_mod {
 }
 
 #[cfg(feature = "std")]
-#[cfg_attr(doc_cfg, doc(cfg(feature = "std")))]
 pub fn seconds_since_epoch() -> f64 {
     SystemTime::now()
         .duration_since(SystemTime::UNIX_EPOCH)
@@ -178,7 +176,6 @@ pub const fn ccsds_epoch_to_unix_epoch(ccsds_epoch: i64) -> i64 {
 }
 
 #[cfg(feature = "std")]
-#[cfg_attr(doc_cfg, doc(cfg(feature = "std")))]
 pub fn ms_of_day_using_sysclock() -> u32 {
     ms_of_day(seconds_since_epoch())
 }
@@ -199,7 +196,6 @@ pub trait TimeWriter {
     fn write_to_bytes(&self, bytes: &mut [u8]) -> Result<usize, TimestampError>;
 
     #[cfg(feature = "alloc")]
-    #[cfg_attr(doc_cfg, doc(cfg(feature = "alloc")))]
     fn to_vec(&self) -> Result<alloc::vec::Vec<u8>, TimestampError> {
         let mut vec = alloc::vec![0; self.len_written()];
         self.write_to_bytes(&mut vec)?;
@@ -238,13 +234,11 @@ pub trait CcsdsTimeProvider {
     }
 
     #[cfg(feature = "chrono")]
-    #[cfg_attr(doc_cfg, doc(cfg(feature = "chrono")))]
     fn chrono_date_time(&self) -> chrono::LocalResult<chrono::DateTime<chrono::Utc>> {
         chrono::Utc.timestamp_opt(self.unix_secs(), self.subsec_nanos())
     }
 
     #[cfg(feature = "timelib")]
-    #[cfg_attr(doc_cfg, doc(cfg(feature = "timelib")))]
     fn timelib_date_time(&self) -> Result<time::OffsetDateTime, time::error::ComponentRange> {
         Ok(time::OffsetDateTime::from_unix_timestamp(self.unix_secs())?
             + time::Duration::nanoseconds(self.subsec_nanos().into()))
@@ -341,7 +335,6 @@ impl UnixTime {
     }
 
     #[cfg(feature = "std")]
-    #[cfg_attr(doc_cfg, doc(cfg(feature = "std")))]
     pub fn from_now() -> Result<Self, SystemTimeError> {
         let now = SystemTime::now().duration_since(SystemTime::UNIX_EPOCH)?;
         let epoch = now.as_secs();
@@ -358,13 +351,11 @@ impl UnixTime {
     }
 
     #[cfg(feature = "chrono")]
-    #[cfg_attr(doc_cfg, doc(cfg(feature = "chrono")))]
     pub fn chrono_date_time(&self) -> chrono::LocalResult<chrono::DateTime<chrono::Utc>> {
         Utc.timestamp_opt(self.secs, self.subsec_nanos)
     }
 
     #[cfg(feature = "timelib")]
-    #[cfg_attr(doc_cfg, doc(cfg(feature = "timelib")))]
     pub fn timelib_date_time(&self) -> Result<time::OffsetDateTime, time::error::ComponentRange> {
         Ok(time::OffsetDateTime::from_unix_timestamp(self.secs())?
             + time::Duration::nanoseconds(self.subsec_nanos().into()))
@@ -385,7 +376,6 @@ impl UnixTime {
 }
 
 #[cfg(feature = "chrono")]
-#[cfg_attr(doc_cfg, doc(cfg(feature = "chrono")))]
 impl From<chrono::DateTime<chrono::Utc>> for UnixTime {
     fn from(value: chrono::DateTime<chrono::Utc>) -> Self {
         Self::new(value.timestamp(), value.timestamp_subsec_nanos())
@@ -393,7 +383,6 @@ impl From<chrono::DateTime<chrono::Utc>> for UnixTime {
 }
 
 #[cfg(feature = "timelib")]
-#[cfg_attr(doc_cfg, doc(cfg(feature = "timelib")))]
 impl From<time::OffsetDateTime> for UnixTime {
     fn from(value: time::OffsetDateTime) -> Self {
         Self::new(value.unix_timestamp(), value.nanosecond())

src/util.rs

@@ -77,7 +77,6 @@ pub trait UnsignedEnum {
     fn value(&self) -> u64;
 
     #[cfg(feature = "alloc")]
-    #[cfg_attr(doc_cfg, doc(cfg(feature = "alloc")))]
     fn to_vec(&self) -> alloc::vec::Vec<u8> {
         let mut buf = alloc::vec![0; self.size()];
         self.write_to_be_bytes(&mut buf).unwrap();