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relative locktime: constify a bunch of constructors

This commit is contained in:
Andrew Poelstra 2024-03-18 13:12:15 +00:00
parent f27e675e1e
commit ac968e02b6
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2 changed files with 20 additions and 10 deletions
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14
bitcoin/src/blockdata/locktime/relative.rs
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@ -70,8 +70,11 @@ impl LockTime {
/// ///
/// Will return an error if the input cannot be encoded in 16 bits. /// Will return an error if the input cannot be encoded in 16 bits.
#[inline] #[inline]
pub fn from_seconds_floor(seconds: u32) -> Result<Self, TimeOverflowError> { pub const fn from_seconds_floor(seconds: u32) -> Result<Self, TimeOverflowError> {
Time::from_seconds_floor(seconds).map(LockTime::Time) match Time::from_seconds_floor(seconds) {
Ok(time) => Ok(LockTime::Time(time)),
Err(e) => Err(e),
}
} }
/// Create a [`LockTime`] from seconds, converting the seconds into 512 second interval /// Create a [`LockTime`] from seconds, converting the seconds into 512 second interval
@ -81,8 +84,11 @@ impl LockTime {
/// ///
/// Will return an error if the input cannot be encoded in 16 bits. /// Will return an error if the input cannot be encoded in 16 bits.
#[inline] #[inline]
pub fn from_seconds_ceil(seconds: u32) -> Result<Self, TimeOverflowError> { pub const fn from_seconds_ceil(seconds: u32) -> Result<Self, TimeOverflowError> {
Time::from_seconds_ceil(seconds).map(LockTime::Time) match Time::from_seconds_ceil(seconds) {
Ok(time) => Ok(LockTime::Time(time)),
Err(e) => Err(e),
}
} }
/// Returns true if this [`relative::LockTime`] is satisfied by either height or time. /// Returns true if this [`relative::LockTime`] is satisfied by either height or time.

16
units/src/locktime/relative.rs
View File

@ -72,9 +72,11 @@ impl Time {
/// ///
/// Will return an error if the input cannot be encoded in 16 bits. /// Will return an error if the input cannot be encoded in 16 bits.
#[inline] #[inline]
pub fn from_seconds_floor(seconds: u32) -> Result<Self, TimeOverflowError> { #[rustfmt::skip] // moves comments to unrelated code
if let Ok(interval) = u16::try_from(seconds / 512) { pub const fn from_seconds_floor(seconds: u32) -> Result<Self, TimeOverflowError> {
Ok(Time::from_512_second_intervals(interval)) let interval = seconds / 512;
if interval <= u16::MAX as u32 { // infallible cast, needed by const code
Ok(Time::from_512_second_intervals(interval as u16)) // cast checked above, needed by const code
} else { } else {
Err(TimeOverflowError { seconds }) Err(TimeOverflowError { seconds })
} }
@ -87,9 +89,11 @@ impl Time {
/// ///
/// Will return an error if the input cannot be encoded in 16 bits. /// Will return an error if the input cannot be encoded in 16 bits.
#[inline] #[inline]
pub fn from_seconds_ceil(seconds: u32) -> Result<Self, TimeOverflowError> { #[rustfmt::skip] // moves comments to unrelated code
if let Ok(interval) = u16::try_from((seconds + 511) / 512) { pub const fn from_seconds_ceil(seconds: u32) -> Result<Self, TimeOverflowError> {
Ok(Time::from_512_second_intervals(interval)) let interval = (seconds + 511) / 512;
if interval <= u16::MAX as u32 { // infallible cast, needed by const code
Ok(Time::from_512_second_intervals(interval as u16)) // cast checked above, needed by const code
} else { } else {
Err(TimeOverflowError { seconds }) Err(TimeOverflowError { seconds })
} }