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#[derive(Debug, Clone, Copy, Eq, PartialEq, Hash)]
pub(crate) enum Int {
I8 = 8,
I16 = 16,
I32 = 32,
I64 = 64,
I128 = 128,
}
pub(crate) struct IntIterator {
index: u8,
}
impl IntIterator {
pub fn new() -> Self {
Self { index: 0 }
}
}
impl Iterator for IntIterator {
type Item = Int;
fn next(&mut self) -> Option<Self::Item> {
let res = match self.index {
0 => Some(Int::I8),
1 => Some(Int::I16),
2 => Some(Int::I32),
3 => Some(Int::I64),
4 => Some(Int::I128),
_ => return None,
};
self.index += 1;
res
}
}
#[derive(Debug, Clone, Copy, Eq, PartialEq, Hash)]
pub(crate) enum Float {
F32 = 32,
F64 = 64,
}
pub(crate) struct FloatIterator {
index: u8,
}
impl FloatIterator {
pub fn new() -> Self {
Self { index: 0 }
}
}
impl Iterator for FloatIterator {
type Item = Float;
fn next(&mut self) -> Option<Self::Item> {
let res = match self.index {
0 => Some(Float::F32),
1 => Some(Float::F64),
_ => return None,
};
self.index += 1;
res
}
}
#[derive(Debug, Clone, Copy, Eq, PartialEq, Hash)]
pub(crate) enum Reference {
R32 = 32,
R64 = 64,
}
pub(crate) struct ReferenceIterator {
index: u8,
}
impl ReferenceIterator {
pub fn new() -> Self {
Self { index: 0 }
}
}
impl Iterator for ReferenceIterator {
type Item = Reference;
fn next(&mut self) -> Option<Self::Item> {
let res = match self.index {
0 => Some(Reference::R32),
1 => Some(Reference::R64),
_ => return None,
};
self.index += 1;
res
}
}
#[cfg(test)]
mod iter_tests {
use super::*;
#[test]
fn int_iter_works() {
let mut int_iter = IntIterator::new();
assert_eq!(int_iter.next(), Some(Int::I8));
assert_eq!(int_iter.next(), Some(Int::I16));
assert_eq!(int_iter.next(), Some(Int::I32));
assert_eq!(int_iter.next(), Some(Int::I64));
assert_eq!(int_iter.next(), Some(Int::I128));
assert_eq!(int_iter.next(), None);
}
#[test]
fn float_iter_works() {
let mut float_iter = FloatIterator::new();
assert_eq!(float_iter.next(), Some(Float::F32));
assert_eq!(float_iter.next(), Some(Float::F64));
assert_eq!(float_iter.next(), None);
}
#[test]
fn reference_iter_works() {
let mut reference_iter = ReferenceIterator::new();
assert_eq!(reference_iter.next(), Some(Reference::R32));
assert_eq!(reference_iter.next(), Some(Reference::R64));
assert_eq!(reference_iter.next(), None);
}
}