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Simplify read_scriptbool 

Refactor and simplify the logical operators in `read_scriptbool`.

Refactor only, no logic changes.
This commit is contained in:
Tobin Harding 2022-01-25 08:55:29 +11:00
parent 654b2772b8
commit 373ea89a9a
1 changed files with 6 additions and 3 deletions
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9
src/blockdata/script.rs
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@ -239,9 +239,12 @@ pub fn read_scriptint(v: &[u8]) -> Result<i64, Error> {
/// else as true", except that the overflow rules don't apply. /// else as true", except that the overflow rules don't apply.
#[inline] #[inline]
pub fn read_scriptbool(v: &[u8]) -> bool { pub fn read_scriptbool(v: &[u8]) -> bool {
!(v.is_empty() || let last = match v.last() {
((v[v.len() - 1] == 0 || v[v.len() - 1] == 0x80) && Some(last) => *last,
v.iter().rev().skip(1).all(|&w| w == 0))) None => return false,
};
!((last == 0x00 || last == 0x80) && v.iter().rev().skip(1).all(|&b| b == 0))
} }
/// Read a script-encoded unsigned integer /// Read a script-encoded unsigned integer