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use std::mem;
#[derive(Debug, Clone, PartialEq, Eq, PartialOrd, Ord, Hash)]
pub enum Integer {
I8(i8),
I16(i16),
I32(i32),
I64(i64),
I128(i128),
U8(u8),
U16(u16),
U32(u32),
U64(u64),
U128(u128),
}
#[derive(Debug, Clone, PartialEq, Eq, PartialOrd, Ord, Hash)]
pub enum Key {
Unit,
Bool(bool),
Integer(Integer),
Bytes(Vec<u8>),
String(String),
Vec(Vec<Key>),
Map(Vec<(Key, Key)>),
}
impl Default for Key {
fn default() -> Self {
Self::Unit
}
}
impl Key {
pub fn normalize(self) -> Key {
match self {
Key::Vec(mut vec) => {
for value in &mut vec {
*value = mem::replace(value, Key::Unit).normalize();
}
Key::Vec(vec)
}
Key::Map(mut map) => {
for (key, value) in &mut map {
*key = mem::replace(key, Key::Unit).normalize();
*value = mem::replace(value, Key::Unit).normalize();
}
map.sort_by(|a, b| a.0.cmp(&b.0));
Key::Map(map)
}
other => other,
}
}
}
macro_rules! impl_integer_from {
($variant:ident, $for_type:ty) => {
impl From<$for_type> for Key {
fn from(v: $for_type) -> Key {
Key::Integer(Integer::$variant(v))
}
}
};
}
macro_rules! impl_from {
($variant:path, $for_type:ty) => {
impl From<$for_type> for Key {
fn from(v: $for_type) -> Key {
$variant(v.into())
}
}
};
}
impl_integer_from!(I8, i8);
impl_integer_from!(I16, i16);
impl_integer_from!(I32, i32);
impl_integer_from!(I64, i64);
impl_integer_from!(I128, i128);
impl_integer_from!(U8, u8);
impl_integer_from!(U16, u16);
impl_integer_from!(U32, u32);
impl_integer_from!(U64, u64);
impl_integer_from!(U128, u128);
impl_from!(Key::Bool, bool);
impl_from!(Key::Bytes, Vec<u8>);
impl_from!(Key::String, String);
impl_from!(Key::Vec, Vec<Key>);
impl_from!(Key::Map, Vec<(Key, Key)>);
#[cfg(test)]
mod tests {
use super::Key;
#[test]
fn assert_default() {
assert_eq!(Key::Unit, Key::default());
}
}