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relative locktime: introduce is_* methods to check units 

Copy these from absolute::LockTime. While we are at it, make the
functions in absolute::LockTime const.
This commit is contained in:
Andrew Poelstra 2024-03-07 18:14:05 +00:00
parent c2f87c7ab3
commit 878b865f85
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2 changed files with 20 additions and 3 deletions
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4
bitcoin/src/blockdata/locktime/absolute.rs
View File

@ -176,7 +176,7 @@ impl LockTime {
/// Returns true if this lock time value is a block height.
#[inline]
pub fn is_block_height(&self) -> bool {
pub const fn is_block_height(&self) -> bool {
match *self {
LockTime::Blocks(_) => true,
LockTime::Seconds(_) => false,
@ -185,7 +185,7 @@ impl LockTime {
/// Returns true if this lock time value is a block time (UNIX timestamp).
#[inline]
pub fn is_block_time(&self) -> bool { !self.is_block_height() }
pub const fn is_block_time(&self) -> bool { !self.is_block_height() }
/// Returns true if this timelock constraint is satisfied by the respective `height`/`time`.
///

19
bitcoin/src/blockdata/locktime/relative.rs
View File

@ -21,7 +21,7 @@ pub use units::locktime::relative::{Height, Time, TimeOverflowError};
/// A relative lock time value, representing either a block height or time (512 second intervals).
///
/// Used for sequence numbers (`nSequence` in Bitcoin Core and [`crate::Transaction::TxIn::sequence`]
/// Used for sequence numbers (`nSequence` in Bitcoin Core and [`crate::TxIn::sequence`]
/// in this library) and also for the argument to opcode 'OP_CHECKSEQUENCEVERIFY`.
///
/// ### Note on ordering
@ -141,6 +141,23 @@ impl LockTime {
}
}
/// Returns true if both lock times use the same unit i.e., both height based or both time based.
#[inline]
pub const fn is_same_unit(&self, other: LockTime) -> bool {
matches!(
(self, other),
(LockTime::Blocks(_), LockTime::Blocks(_)) | (LockTime::Time(_), LockTime::Time(_))
)
}
/// Returns true if this lock time value is in units of block height.
#[inline]
pub const fn is_block_height(&self) -> bool { matches!(*self, LockTime::Blocks(_)) }
/// Returns true if this lock time value is in units of time.
#[inline]
pub const fn is_block_time(&self) -> bool { !self.is_block_height() }
/// Returns true if this [`relative::LockTime`] is satisfied by either height or time.
///
/// # Examples