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std::to_bytes: Implement IterBytes on 1- to 8-tuples

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This commit is contained in:
blake2-ppc 2013-08-15 23:51:39 +02:00
parent 6066118b29
commit 73fdacbac9
1 changed files with 28 additions and 19 deletions
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47
src/libstd/to_bytes.rs
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@ -235,28 +235,37 @@ impl<'self,A:IterBytes> IterBytes for &'self [A] {
}
}
impl<A:IterBytes,B:IterBytes> IterBytes for (A,B) {
#[inline]
fn iter_bytes(&self, lsb0: bool, f: Cb) -> bool {
match *self {
(ref a, ref b) => { a.iter_bytes(lsb0, |b| f(b)) &&
b.iter_bytes(lsb0, |b| f(b)) }
impl<A: IterBytes> IterBytes for (A, ) {
fn iter_bytes(&self, lsb0: bool, f: Cb) -> bool {
match *self {
(ref a, ) => a.iter_bytes(lsb0, |b| f(b))
}
}
}
}
impl<A:IterBytes,B:IterBytes,C:IterBytes> IterBytes for (A,B,C) {
#[inline]
fn iter_bytes(&self, lsb0: bool, f: Cb) -> bool {
match *self {
(ref a, ref b, ref c) => {
a.iter_bytes(lsb0, |b| f(b)) &&
b.iter_bytes(lsb0, |b| f(b)) &&
c.iter_bytes(lsb0, |b| f(b))
}
}
}
}
macro_rules! iter_bytes_tuple(
($($A:ident),+) => (
impl<$($A: IterBytes),+> IterBytes for ($($A),+) {
fn iter_bytes(&self, lsb0: bool, f: Cb) -> bool {
match *self {
($(ref $A),+) => {
$(
$A .iter_bytes(lsb0, |b| f(b))
)&&+
}
}
}
}
)
)
iter_bytes_tuple!(A, B)
iter_bytes_tuple!(A, B, C)
iter_bytes_tuple!(A, B, C, D)
iter_bytes_tuple!(A, B, C, D, E)
iter_bytes_tuple!(A, B, C, D, E, F)
iter_bytes_tuple!(A, B, C, D, E, F, G)
iter_bytes_tuple!(A, B, C, D, E, F, G, H)
impl<A:IterBytes> IterBytes for ~[A] {
#[inline]