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use Integer;
use serde::de::{Deserialize, Deserializer, Error as DeError};
use serde::ser::{Serialize, Serializer};
use serdeize::{self, Data, PrecReq, PrecVal};
impl Serialize for Integer {
fn serialize<S>(&self, serializer: S) -> Result<S::Ok, S::Error>
where
S: Serializer,
{
let prec = PrecVal::Zero;
let radix = if self.significant_bits() <= 32 {
10
} else {
16
};
let value = self.to_string_radix(radix);
serdeize::serialize("Integer", &Data { prec, radix, value }, serializer)
}
}
impl<'de> Deserialize<'de> for Integer {
fn deserialize<D>(deserializer: D) -> Result<Integer, D::Error>
where
D: Deserializer<'de>,
{
let Data { prec, radix, value } =
serdeize::deserialize("Integer", PrecReq::Zero, deserializer)?;
match prec {
PrecVal::Zero => {}
_ => unreachable!(),
}
serdeize::check_range("radix", radix, 2, 36)?;
Integer::from_str_radix(&value, radix).map_err(DeError::custom)
}
}
#[cfg(test)]
mod tests {
use {Assign, Integer};
use serde_test::{self, Token};
enum Check<'a> {
SerDe(&'a Integer),
De(&'a Integer),
DeError(&'a str),
}
impl<'a> Check<'a> {
fn check(self, radix: i32, value: &'static str) {
let tokens = [
Token::Struct {
name: "Integer",
len: 2,
},
Token::Str("radix"),
Token::I32(radix),
Token::Str("value"),
Token::Str(value),
Token::StructEnd,
];
match self {
Check::SerDe(i) => serde_test::assert_tokens(i, &tokens),
Check::De(i) => serde_test::assert_de_tokens(i, &tokens),
Check::DeError(msg) => {
serde_test::assert_de_tokens_error::<Integer>(&tokens, msg)
}
}
}
}
#[test]
fn check() {
Check::DeError("radix 1 less than minimum 2").check(1, "0");
Check::DeError("radix 37 greater than maximum 36").check(37, "0");
let mut i = Integer::new();
Check::SerDe(&i).check(10, "0");
Check::De(&i).check(10, "+0");
Check::De(&i).check(10, "-00");
i.assign(-0xffff_ffff_i64);
Check::SerDe(&i).check(10, "-4294967295");
Check::De(&i).check(16, "-ffffffff");
i = i.abs() + 1;
Check::SerDe(&i).check(16, "100000000");
Check::De(&i).check(10, "4294967296");
}
}