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use std::io::Read; use crate::dedup::DedupContext; use crate::serde::Mode; use crate::Result; pub trait BinDeserialize<'de>: Sized { fn deserialize<D: BinDeserializer<'de>>(deserializer: D) -> Result<Self>; fn deserialize_in_place<D: BinDeserializer<'de>>(&mut self, deserializer: D) -> Result<()> { *self = Self::deserialize(deserializer)?; Ok(()) } } pub trait BinDeserializeOwned: for<'de> BinDeserialize<'de> {} impl<T> BinDeserializeOwned for T where T: for<'de> BinDeserialize<'de> {} pub trait BinDeserializer<'de>: Sized { type Pipe: Read; fn pipe(&mut self) -> &mut Self::Pipe; fn dedup(&self) -> &'de DedupContext; fn mode(&self) -> Mode; fn with_mode(self, mode: Mode) -> WithMode<Self> { WithMode { deserializer: self, mode, } } fn change_mode<F>(self, op: F) -> WithMode<Self> where F: FnOnce(&mut Mode), { let mut new_mode = self.mode(); op(&mut new_mode); self.with_mode(new_mode) } fn disable_dedup(self) -> WithMode<Self> { self.change_mode(|mode| mode.use_dedup = false) } } impl<'de, T> BinDeserializer<'de> for &mut T where T: BinDeserializer<'de>, { type Pipe = T::Pipe; fn pipe(&mut self) -> &mut Self::Pipe { (**self).pipe() } fn dedup(&self) -> &'de DedupContext { (**self).dedup() } fn mode(&self) -> Mode { (**self).mode() } } pub struct BinDeserializerBase<'de, R> { pipe: R, dedup: &'de DedupContext, } impl<'de, R> BinDeserializerBase<'de, R> { pub fn new(pipe: R, dedup: &'de DedupContext) -> Self { BinDeserializerBase { pipe, dedup } } } impl<'de, R> BinDeserializer<'de> for BinDeserializerBase<'de, R> where R: Read, { type Pipe = R; fn pipe(&mut self) -> &mut Self::Pipe { &mut self.pipe } fn dedup(&self) -> &'de DedupContext { self.dedup } fn mode(&self) -> Mode { Mode::default() } } pub struct WithMode<D> { deserializer: D, mode: Mode, } impl<'de, D> BinDeserializer<'de> for WithMode<D> where D: BinDeserializer<'de>, { type Pipe = D::Pipe; fn pipe(&mut self) -> &mut Self::Pipe { self.deserializer.pipe() } fn dedup(&self) -> &'de DedupContext { self.deserializer.dedup() } fn mode(&self) -> Mode { self.mode } }