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use std::num::{NonZeroI64, NonZeroIsize, NonZeroU64, NonZeroUsize};
use super::{cast, Value};
macro_rules! signed_int {
($($ty:ty)*) => {
$(cast! {
$ty,
self => Value::Int(self as i64),
v: i64 => v.try_into().map_err(|_| "number too large")?,
})*
}
}
macro_rules! unsigned_int {
($($ty:ty)*) => {
$(cast! {
$ty,
self => Value::Int(self as i64),
v: i64 => v.try_into().map_err(|_| {
if v < 0 {
"number must be at least zero"
} else {
"number too large"
}
})?,
})*
}
}
macro_rules! signed_nonzero {
($($ty:ty)*) => {
$(cast! {
$ty,
self => Value::Int(self.get() as i64),
v: i64 => v
.try_into()
.ok()
.and_then($ty::new)
.ok_or_else(|| if v == 0 {
"number must not be zero"
} else {
"number too large"
})?,
})*
}
}
macro_rules! unsigned_nonzero {
($($ty:ty)*) => {
$(cast! {
$ty,
self => Value::Int(self.get() as i64),
v: i64 => v
.try_into()
.ok()
.and_then($ty::new)
.ok_or_else(|| if v <= 0 {
"number must be positive"
} else {
"number too large"
})?,
})*
}
}
signed_int! {
i8 i16 i32 isize
}
unsigned_int! {
u8 u16 u32 u64 usize
}
signed_nonzero! {
NonZeroI64 NonZeroIsize
}
unsigned_nonzero! {
NonZeroU64 NonZeroUsize
}
|
