90 lines
2.5 KiB
Rust
90 lines
2.5 KiB
Rust
use super::{Bytes, BytesMut};
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use alloc::string::String;
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use alloc::vec::Vec;
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use core::{cmp, fmt};
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use serde::{de, Deserialize, Deserializer, Serialize, Serializer};
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macro_rules! serde_impl {
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($ty:ident, $visitor_ty:ident, $from_slice:ident, $from_vec:ident) => {
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impl Serialize for $ty {
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#[inline]
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fn serialize<S>(&self, serializer: S) -> Result<S::Ok, S::Error>
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where
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S: Serializer,
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{
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serializer.serialize_bytes(&self)
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}
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}
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struct $visitor_ty;
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impl<'de> de::Visitor<'de> for $visitor_ty {
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type Value = $ty;
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fn expecting(&self, formatter: &mut fmt::Formatter<'_>) -> fmt::Result {
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formatter.write_str("byte array")
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}
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#[inline]
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fn visit_seq<V>(self, mut seq: V) -> Result<Self::Value, V::Error>
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where
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V: de::SeqAccess<'de>,
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{
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let len = cmp::min(seq.size_hint().unwrap_or(0), 4096);
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let mut values: Vec<u8> = Vec::with_capacity(len);
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while let Some(value) = seq.next_element()? {
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values.push(value);
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}
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Ok($ty::$from_vec(values))
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}
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#[inline]
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fn visit_bytes<E>(self, v: &[u8]) -> Result<Self::Value, E>
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where
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E: de::Error,
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{
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Ok($ty::$from_slice(v))
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}
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#[inline]
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fn visit_byte_buf<E>(self, v: Vec<u8>) -> Result<Self::Value, E>
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where
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E: de::Error,
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{
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Ok($ty::$from_vec(v))
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}
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#[inline]
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fn visit_str<E>(self, v: &str) -> Result<Self::Value, E>
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where
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E: de::Error,
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{
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Ok($ty::$from_slice(v.as_bytes()))
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}
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#[inline]
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fn visit_string<E>(self, v: String) -> Result<Self::Value, E>
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where
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E: de::Error,
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{
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Ok($ty::$from_vec(v.into_bytes()))
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}
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}
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impl<'de> Deserialize<'de> for $ty {
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#[inline]
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fn deserialize<D>(deserializer: D) -> Result<$ty, D::Error>
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where
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D: Deserializer<'de>,
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{
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deserializer.deserialize_byte_buf($visitor_ty)
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}
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}
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};
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}
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serde_impl!(Bytes, BytesVisitor, copy_from_slice, from);
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serde_impl!(BytesMut, BytesMutVisitor, from, from_vec);
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