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@@ -0,0 +1,768 @@
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+use bls12_381 as bls;
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+use std::borrow::Cow;
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+use std::io::{Cursor, Read, Write};
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+use std::rc::Rc;
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+use std::{io, mem};
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+
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+use crate::endian;
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+use crate::error::{Error, Result};
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+
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+/// Encode an object into a vector
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+pub fn serialize<T: Encodable + ?Sized>(data: &T) -> Vec<u8> {
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+ let mut encoder = Vec::new();
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+ let len = data.encode(&mut encoder).unwrap();
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+ assert_eq!(len, encoder.len());
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+ encoder
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+}
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+
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+/// Encode an object into a hex-encoded string
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+pub fn serialize_hex<T: Encodable + ?Sized>(data: &T) -> String {
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+ hex::encode(serialize(data))
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+}
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+
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+/// Deserialize an object from a vector, will error if said deserialization
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+/// doesn't consume the entire vector.
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+pub fn deserialize<T: Decodable>(data: &[u8]) -> Result<T> {
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+ let (rv, consumed) = deserialize_partial(data)?;
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+
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+ // Fail if data are not consumed entirely.
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+ if consumed == data.len() {
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+ Ok(rv)
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+ } else {
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+ Err(Error::ParseFailed(
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+ "data not consumed entirely when explicitly deserializing",
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+ ))
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+ }
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+}
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+
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+/// Deserialize an object from a vector, but will not report an error if said deserialization
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+/// doesn't consume the entire vector.
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+pub fn deserialize_partial<T: Decodable>(data: &[u8]) -> Result<(T, usize)> {
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+ let mut decoder = Cursor::new(data);
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+ let rv = Decodable::decode(&mut decoder)?;
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+ let consumed = decoder.position() as usize;
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+
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+ Ok((rv, consumed))
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+}
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+
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+/// Extensions of `Write` to encode data as per Bitcoin consensus
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+pub trait WriteExt {
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+ /// Output a 64-bit uint
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+ fn write_u64(&mut self, v: u64) -> Result<()>;
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+ /// Output a 32-bit uint
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+ fn write_u32(&mut self, v: u32) -> Result<()>;
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+ /// Output a 16-bit uint
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+ fn write_u16(&mut self, v: u16) -> Result<()>;
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+ /// Output a 8-bit uint
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+ fn write_u8(&mut self, v: u8) -> Result<()>;
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+
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+ /// Output a 64-bit int
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+ fn write_i64(&mut self, v: i64) -> Result<()>;
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+ /// Output a 32-bit int
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+ fn write_i32(&mut self, v: i32) -> Result<()>;
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+ /// Output a 16-bit int
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+ fn write_i16(&mut self, v: i16) -> Result<()>;
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+ /// Output a 8-bit int
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+ fn write_i8(&mut self, v: i8) -> Result<()>;
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+
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+ /// Output a boolean
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+ fn write_bool(&mut self, v: bool) -> Result<()>;
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+
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+ /// Output a byte slice
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+ fn write_slice(&mut self, v: &[u8]) -> Result<()>;
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+}
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+
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+/// Extensions of `Read` to decode data as per Bitcoin consensus
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+pub trait ReadExt {
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+ /// Read a 64-bit uint
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+ fn read_u64(&mut self) -> Result<u64>;
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+ /// Read a 32-bit uint
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+ fn read_u32(&mut self) -> Result<u32>;
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+ /// Read a 16-bit uint
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+ fn read_u16(&mut self) -> Result<u16>;
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+ /// Read a 8-bit uint
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+ fn read_u8(&mut self) -> Result<u8>;
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+
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+ /// Read a 64-bit int
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+ fn read_i64(&mut self) -> Result<i64>;
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+ /// Read a 32-bit int
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+ fn read_i32(&mut self) -> Result<i32>;
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+ /// Read a 16-bit int
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+ fn read_i16(&mut self) -> Result<i16>;
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+ /// Read a 8-bit int
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+ fn read_i8(&mut self) -> Result<i8>;
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+
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+ /// Read a boolean
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+ fn read_bool(&mut self) -> Result<bool>;
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+
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+ /// Read a byte slice
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+ fn read_slice(&mut self, slice: &mut [u8]) -> Result<()>;
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+}
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+
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+macro_rules! encoder_fn {
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+ ($name:ident, $val_type:ty, $writefn:ident) => {
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+ #[inline]
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+ fn $name(&mut self, v: $val_type) -> Result<()> {
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+ self.write_all(&endian::$writefn(v)).map_err(Error::Io)
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+ }
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+ };
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+}
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+
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+macro_rules! decoder_fn {
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+ ($name:ident, $val_type:ty, $readfn:ident, $byte_len: expr) => {
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+ #[inline]
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+ fn $name(&mut self) -> Result<$val_type> {
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+ assert_eq!(::std::mem::size_of::<$val_type>(), $byte_len); // size_of isn't a constfn in 1.22
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+ let mut val = [0; $byte_len];
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+ self.read_exact(&mut val[..]).map_err(Error::Io)?;
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+ Ok(endian::$readfn(&val))
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+ }
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+ };
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+}
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+
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+impl<W: Write> WriteExt for W {
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+ encoder_fn!(write_u64, u64, u64_to_array_le);
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+ encoder_fn!(write_u32, u32, u32_to_array_le);
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+ encoder_fn!(write_u16, u16, u16_to_array_le);
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+ encoder_fn!(write_i64, i64, i64_to_array_le);
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+ encoder_fn!(write_i32, i32, i32_to_array_le);
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+ encoder_fn!(write_i16, i16, i16_to_array_le);
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+
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+ #[inline]
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+ fn write_i8(&mut self, v: i8) -> Result<()> {
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+ self.write_all(&[v as u8]).map_err(Error::Io)
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+ }
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+ #[inline]
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+ fn write_u8(&mut self, v: u8) -> Result<()> {
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+ self.write_all(&[v]).map_err(Error::Io)
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+ }
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+ #[inline]
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+ fn write_bool(&mut self, v: bool) -> Result<()> {
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+ self.write_all(&[v as u8]).map_err(Error::Io)
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+ }
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+ #[inline]
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+ fn write_slice(&mut self, v: &[u8]) -> Result<()> {
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+ self.write_all(v).map_err(Error::Io)
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+ }
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+}
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+
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+impl<R: Read> ReadExt for R {
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+ decoder_fn!(read_u64, u64, slice_to_u64_le, 8);
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+ decoder_fn!(read_u32, u32, slice_to_u32_le, 4);
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+ decoder_fn!(read_u16, u16, slice_to_u16_le, 2);
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+ decoder_fn!(read_i64, i64, slice_to_i64_le, 8);
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+ decoder_fn!(read_i32, i32, slice_to_i32_le, 4);
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+ decoder_fn!(read_i16, i16, slice_to_i16_le, 2);
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+
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+ #[inline]
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+ fn read_u8(&mut self) -> Result<u8> {
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+ let mut slice = [0u8; 1];
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+ self.read_exact(&mut slice)?;
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+ Ok(slice[0])
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+ }
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+ #[inline]
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+ fn read_i8(&mut self) -> Result<i8> {
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+ let mut slice = [0u8; 1];
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+ self.read_exact(&mut slice)?;
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+ Ok(slice[0] as i8)
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+ }
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+ #[inline]
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+ fn read_bool(&mut self) -> Result<bool> {
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+ ReadExt::read_i8(self).map(|bit| bit != 0)
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+ }
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+ #[inline]
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+ fn read_slice(&mut self, slice: &mut [u8]) -> Result<()> {
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+ self.read_exact(slice).map_err(Error::Io)
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+ }
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+}
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+
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+/// Data which can be encoded in a consensus-consistent way
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+pub trait Encodable {
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+ /// Encode an object with a well-defined format, should only ever error if
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+ /// the underlying `Write` errors. Returns the number of bytes written on
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+ /// success
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+ fn encode<W: io::Write>(&self, e: W) -> Result<usize>;
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+}
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+
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+/// Data which can be encoded in a consensus-consistent way
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+pub trait Decodable: Sized {
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+ /// Decode an object with a well-defined format
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+ fn decode<D: io::Read>(d: D) -> Result<Self>;
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+}
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+
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+#[derive(PartialEq, Eq, PartialOrd, Ord, Clone, Debug)]
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+pub struct VarInt(pub u64);
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+
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+// Primitive types
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+macro_rules! impl_int_encodable {
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+ ($ty:ident, $meth_dec:ident, $meth_enc:ident) => {
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+ impl Decodable for $ty {
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+ #[inline]
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+ fn decode<D: io::Read>(mut d: D) -> Result<Self> {
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+ ReadExt::$meth_dec(&mut d).map($ty::from_le)
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+ }
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+ }
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+ impl Encodable for $ty {
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+ #[inline]
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+ fn encode<S: WriteExt>(&self, mut s: S) -> Result<usize> {
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+ s.$meth_enc(self.to_le())?;
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+ Ok(mem::size_of::<$ty>())
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+ }
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+ }
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+ };
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+}
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+
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+impl_int_encodable!(u8, read_u8, write_u8);
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+impl_int_encodable!(u16, read_u16, write_u16);
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+impl_int_encodable!(u32, read_u32, write_u32);
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+impl_int_encodable!(u64, read_u64, write_u64);
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+impl_int_encodable!(i8, read_i8, write_i8);
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+impl_int_encodable!(i16, read_i16, write_i16);
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+impl_int_encodable!(i32, read_i32, write_i32);
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+impl_int_encodable!(i64, read_i64, write_i64);
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+
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+impl VarInt {
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+ /// Gets the length of this VarInt when encoded.
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+ /// Returns 1 for 0...0xFC, 3 for 0xFD...(2^16-1), 5 for 0x10000...(2^32-1),
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+ /// and 9 otherwise.
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+ #[inline]
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+ pub fn len(&self) -> usize {
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+ match self.0 {
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+ 0..=0xFC => 1,
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+ 0xFD..=0xFFFF => 3,
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+ 0x10000..=0xFFFFFFFF => 5,
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+ _ => 9,
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+ }
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+ }
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+}
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+
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+impl Encodable for VarInt {
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+ #[inline]
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+ fn encode<S: io::Write>(&self, mut s: S) -> Result<usize> {
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+ match self.0 {
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+ 0..=0xFC => {
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+ (self.0 as u8).encode(s)?;
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+ Ok(1)
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+ }
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+ 0xFD..=0xFFFF => {
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+ s.write_u8(0xFD)?;
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+ (self.0 as u16).encode(s)?;
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+ Ok(3)
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+ }
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+ 0x10000..=0xFFFFFFFF => {
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+ s.write_u8(0xFE)?;
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+ (self.0 as u32).encode(s)?;
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+ Ok(5)
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+ }
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+ _ => {
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+ s.write_u8(0xFF)?;
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+ (self.0 as u64).encode(s)?;
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+ Ok(9)
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+ }
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+ }
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+ }
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+}
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+
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+impl Decodable for VarInt {
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+ #[inline]
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+ fn decode<D: io::Read>(mut d: D) -> Result<Self> {
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+ let n = ReadExt::read_u8(&mut d)?;
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+ match n {
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+ 0xFF => {
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+ let x = ReadExt::read_u64(&mut d)?;
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+ if x < 0x100000000 {
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+ Err(self::Error::NonMinimalVarInt)
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+ } else {
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+ Ok(VarInt(x))
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+ }
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+ }
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+ 0xFE => {
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+ let x = ReadExt::read_u32(&mut d)?;
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+ if x < 0x10000 {
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+ Err(self::Error::NonMinimalVarInt)
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+ } else {
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+ Ok(VarInt(x as u64))
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+ }
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+ }
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+ 0xFD => {
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+ let x = ReadExt::read_u16(&mut d)?;
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+ if x < 0xFD {
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+ Err(self::Error::NonMinimalVarInt)
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+ } else {
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+ Ok(VarInt(x as u64))
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+ }
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+ }
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+ n => Ok(VarInt(n as u64)),
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+ }
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+ }
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+}
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+
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+// Booleans
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+impl Encodable for bool {
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+ #[inline]
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+ fn encode<S: WriteExt>(&self, mut s: S) -> Result<usize> {
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+ s.write_bool(*self)?;
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+ Ok(1)
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+ }
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+}
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+
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+impl Decodable for bool {
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+ #[inline]
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+ fn decode<D: io::Read>(mut d: D) -> Result<bool> {
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+ ReadExt::read_bool(&mut d)
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+ }
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+}
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+
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+// Strings
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+impl Encodable for String {
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+ #[inline]
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+ fn encode<S: io::Write>(&self, mut s: S) -> Result<usize> {
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+ let b = self.as_bytes();
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+ let vi_len = VarInt(b.len() as u64).encode(&mut s)?;
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+ s.write_slice(&b)?;
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+ Ok(vi_len + b.len())
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+ }
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+}
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+
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+impl Decodable for String {
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+ #[inline]
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+ fn decode<D: io::Read>(d: D) -> Result<String> {
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+ String::from_utf8(Decodable::decode(d)?)
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+ .map_err(|_| self::Error::ParseFailed("String was not valid UTF8"))
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+ }
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+}
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+
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+// Cow<'static, str>
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+impl Encodable for Cow<'static, str> {
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+ #[inline]
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+ fn encode<S: io::Write>(&self, mut s: S) -> Result<usize> {
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+ let b = self.as_bytes();
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+ let vi_len = VarInt(b.len() as u64).encode(&mut s)?;
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+ s.write_slice(&b)?;
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+ Ok(vi_len + b.len())
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+ }
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+}
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+
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+impl Decodable for Cow<'static, str> {
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+ #[inline]
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+ fn decode<D: io::Read>(d: D) -> Result<Cow<'static, str>> {
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+ String::from_utf8(Decodable::decode(d)?)
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+ .map_err(|_| self::Error::ParseFailed("String was not valid UTF8"))
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+ .map(Cow::Owned)
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+ }
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+}
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+
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+// Arrays
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+macro_rules! impl_array {
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+ ( $size:expr ) => {
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+ impl Encodable for [u8; $size] {
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+ #[inline]
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+ fn encode<S: WriteExt>(&self, mut s: S) -> Result<usize> {
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+ s.write_slice(&self[..])?;
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+ Ok(self.len())
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+ }
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+ }
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+
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+ impl Decodable for [u8; $size] {
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+ #[inline]
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+ fn decode<D: io::Read>(mut d: D) -> Result<Self> {
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+ let mut ret = [0; $size];
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+ d.read_slice(&mut ret)?;
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+ Ok(ret)
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+ }
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+ }
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+ };
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+}
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+
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+impl_array!(2);
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+impl_array!(4);
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+impl_array!(8);
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+impl_array!(12);
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+impl_array!(16);
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+impl_array!(32);
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+impl_array!(33);
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+
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+// Vectors
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+#[macro_export]
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+macro_rules! impl_vec {
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+ ($type: ty) => {
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+ impl Encodable for Vec<$type> {
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+ #[inline]
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+ fn encode<S: io::Write>(&self, mut s: S) -> Result<usize> {
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+ let mut len = 0;
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+ len += VarInt(self.len() as u64).encode(&mut s)?;
|
|
|
+ for c in self.iter() {
|
|
|
+ len += c.encode(&mut s)?;
|
|
|
+ }
|
|
|
+ Ok(len)
|
|
|
+ }
|
|
|
+ }
|
|
|
+ impl Decodable for Vec<$type> {
|
|
|
+ #[inline]
|
|
|
+ fn decode<D: io::Read>(mut d: D) -> Result<Self> {
|
|
|
+ let len = VarInt::decode(&mut d)?.0;
|
|
|
+ let mut ret = Vec::with_capacity(len as usize);
|
|
|
+ for _ in 0..len {
|
|
|
+ ret.push(Decodable::decode(&mut d)?);
|
|
|
+ }
|
|
|
+ Ok(ret)
|
|
|
+ }
|
|
|
+ }
|
|
|
+ };
|
|
|
+}
|
|
|
+impl_vec!(bls::Scalar);
|
|
|
+
|
|
|
+pub fn encode_with_size<S: io::Write>(data: &[u8], mut s: S) -> Result<usize> {
|
|
|
+ let vi_len = VarInt(data.len() as u64).encode(&mut s)?;
|
|
|
+ s.write_slice(&data)?;
|
|
|
+ Ok(vi_len + data.len())
|
|
|
+}
|
|
|
+
|
|
|
+impl Encodable for Vec<u8> {
|
|
|
+ #[inline]
|
|
|
+ fn encode<S: io::Write>(&self, s: S) -> Result<usize> {
|
|
|
+ encode_with_size(self, s)
|
|
|
+ }
|
|
|
+}
|
|
|
+
|
|
|
+impl Decodable for Vec<u8> {
|
|
|
+ #[inline]
|
|
|
+ fn decode<D: io::Read>(mut d: D) -> Result<Self> {
|
|
|
+ let len = VarInt::decode(&mut d)?.0 as usize;
|
|
|
+ let mut ret = vec![0u8; len];
|
|
|
+ d.read_slice(&mut ret)?;
|
|
|
+ Ok(ret)
|
|
|
+ }
|
|
|
+}
|
|
|
+
|
|
|
+impl Encodable for Box<[u8]> {
|
|
|
+ #[inline]
|
|
|
+ fn encode<S: io::Write>(&self, s: S) -> Result<usize> {
|
|
|
+ encode_with_size(self, s)
|
|
|
+ }
|
|
|
+}
|
|
|
+
|
|
|
+impl Decodable for Box<[u8]> {
|
|
|
+ #[inline]
|
|
|
+ fn decode<D: io::Read>(d: D) -> Result<Self> {
|
|
|
+ <Vec<u8>>::decode(d).map(From::from)
|
|
|
+ }
|
|
|
+}
|
|
|
+
|
|
|
+// Tuples
|
|
|
+macro_rules! tuple_encode {
|
|
|
+ ($($x:ident),*) => (
|
|
|
+ impl <$($x: Encodable),*> Encodable for ($($x),*) {
|
|
|
+ #[inline]
|
|
|
+ #[allow(non_snake_case)]
|
|
|
+ fn encode<S: io::Write>(
|
|
|
+ &self,
|
|
|
+ mut s: S,
|
|
|
+ ) -> Result<usize> {
|
|
|
+ let &($(ref $x),*) = self;
|
|
|
+ let mut len = 0;
|
|
|
+ $(len += $x.encode(&mut s)?;)*
|
|
|
+ Ok(len)
|
|
|
+ }
|
|
|
+ }
|
|
|
+
|
|
|
+ impl<$($x: Decodable),*> Decodable for ($($x),*) {
|
|
|
+ #[inline]
|
|
|
+ #[allow(non_snake_case)]
|
|
|
+ fn decode<D: io::Read>(mut d: D) -> Result<Self> {
|
|
|
+ Ok(($({let $x = Decodable::decode(&mut d)?; $x }),*))
|
|
|
+ }
|
|
|
+ }
|
|
|
+ );
|
|
|
+}
|
|
|
+
|
|
|
+tuple_encode!(T0, T1);
|
|
|
+tuple_encode!(T0, T1, T2, T3);
|
|
|
+tuple_encode!(T0, T1, T2, T3, T4, T5);
|
|
|
+tuple_encode!(T0, T1, T2, T3, T4, T5, T6, T7);
|
|
|
+
|
|
|
+#[cfg(test)]
|
|
|
+mod tests {
|
|
|
+ use super::{deserialize, serialize, Error, Result, VarInt};
|
|
|
+ use super::{deserialize_partial, Encodable};
|
|
|
+ use crate::endian::{u16_to_array_le, u32_to_array_le, u64_to_array_le};
|
|
|
+ use std::io;
|
|
|
+ use std::mem::discriminant;
|
|
|
+
|
|
|
+ #[test]
|
|
|
+ fn serialize_int_test() {
|
|
|
+ // bool
|
|
|
+ assert_eq!(serialize(&false), vec![0u8]);
|
|
|
+ assert_eq!(serialize(&true), vec![1u8]);
|
|
|
+ // u8
|
|
|
+ assert_eq!(serialize(&1u8), vec![1u8]);
|
|
|
+ assert_eq!(serialize(&0u8), vec![0u8]);
|
|
|
+ assert_eq!(serialize(&255u8), vec![255u8]);
|
|
|
+ // u16
|
|
|
+ assert_eq!(serialize(&1u16), vec![1u8, 0]);
|
|
|
+ assert_eq!(serialize(&256u16), vec![0u8, 1]);
|
|
|
+ assert_eq!(serialize(&5000u16), vec![136u8, 19]);
|
|
|
+ // u32
|
|
|
+ assert_eq!(serialize(&1u32), vec![1u8, 0, 0, 0]);
|
|
|
+ assert_eq!(serialize(&256u32), vec![0u8, 1, 0, 0]);
|
|
|
+ assert_eq!(serialize(&5000u32), vec![136u8, 19, 0, 0]);
|
|
|
+ assert_eq!(serialize(&500000u32), vec![32u8, 161, 7, 0]);
|
|
|
+ assert_eq!(serialize(&168430090u32), vec![10u8, 10, 10, 10]);
|
|
|
+ // i32
|
|
|
+ assert_eq!(serialize(&-1i32), vec![255u8, 255, 255, 255]);
|
|
|
+ assert_eq!(serialize(&-256i32), vec![0u8, 255, 255, 255]);
|
|
|
+ assert_eq!(serialize(&-5000i32), vec![120u8, 236, 255, 255]);
|
|
|
+ assert_eq!(serialize(&-500000i32), vec![224u8, 94, 248, 255]);
|
|
|
+ assert_eq!(serialize(&-168430090i32), vec![246u8, 245, 245, 245]);
|
|
|
+ assert_eq!(serialize(&1i32), vec![1u8, 0, 0, 0]);
|
|
|
+ assert_eq!(serialize(&256i32), vec![0u8, 1, 0, 0]);
|
|
|
+ assert_eq!(serialize(&5000i32), vec![136u8, 19, 0, 0]);
|
|
|
+ assert_eq!(serialize(&500000i32), vec![32u8, 161, 7, 0]);
|
|
|
+ assert_eq!(serialize(&168430090i32), vec![10u8, 10, 10, 10]);
|
|
|
+ // u64
|
|
|
+ assert_eq!(serialize(&1u64), vec![1u8, 0, 0, 0, 0, 0, 0, 0]);
|
|
|
+ assert_eq!(serialize(&256u64), vec![0u8, 1, 0, 0, 0, 0, 0, 0]);
|
|
|
+ assert_eq!(serialize(&5000u64), vec![136u8, 19, 0, 0, 0, 0, 0, 0]);
|
|
|
+ assert_eq!(serialize(&500000u64), vec![32u8, 161, 7, 0, 0, 0, 0, 0]);
|
|
|
+ assert_eq!(
|
|
|
+ serialize(&723401728380766730u64),
|
|
|
+ vec![10u8, 10, 10, 10, 10, 10, 10, 10]
|
|
|
+ );
|
|
|
+ // i64
|
|
|
+ assert_eq!(
|
|
|
+ serialize(&-1i64),
|
|
|
+ vec![255u8, 255, 255, 255, 255, 255, 255, 255]
|
|
|
+ );
|
|
|
+ assert_eq!(
|
|
|
+ serialize(&-256i64),
|
|
|
+ vec![0u8, 255, 255, 255, 255, 255, 255, 255]
|
|
|
+ );
|
|
|
+ assert_eq!(
|
|
|
+ serialize(&-5000i64),
|
|
|
+ vec![120u8, 236, 255, 255, 255, 255, 255, 255]
|
|
|
+ );
|
|
|
+ assert_eq!(
|
|
|
+ serialize(&-500000i64),
|
|
|
+ vec![224u8, 94, 248, 255, 255, 255, 255, 255]
|
|
|
+ );
|
|
|
+ assert_eq!(
|
|
|
+ serialize(&-723401728380766730i64),
|
|
|
+ vec![246u8, 245, 245, 245, 245, 245, 245, 245]
|
|
|
+ );
|
|
|
+ assert_eq!(serialize(&1i64), vec![1u8, 0, 0, 0, 0, 0, 0, 0]);
|
|
|
+ assert_eq!(serialize(&256i64), vec![0u8, 1, 0, 0, 0, 0, 0, 0]);
|
|
|
+ assert_eq!(serialize(&5000i64), vec![136u8, 19, 0, 0, 0, 0, 0, 0]);
|
|
|
+ assert_eq!(serialize(&500000i64), vec![32u8, 161, 7, 0, 0, 0, 0, 0]);
|
|
|
+ assert_eq!(
|
|
|
+ serialize(&723401728380766730i64),
|
|
|
+ vec![10u8, 10, 10, 10, 10, 10, 10, 10]
|
|
|
+ );
|
|
|
+ }
|
|
|
+
|
|
|
+ #[test]
|
|
|
+ fn serialize_varint_test() {
|
|
|
+ assert_eq!(serialize(&VarInt(10)), vec![10u8]);
|
|
|
+ assert_eq!(serialize(&VarInt(0xFC)), vec![0xFCu8]);
|
|
|
+ assert_eq!(serialize(&VarInt(0xFD)), vec![0xFDu8, 0xFD, 0]);
|
|
|
+ assert_eq!(serialize(&VarInt(0xFFF)), vec![0xFDu8, 0xFF, 0xF]);
|
|
|
+ assert_eq!(
|
|
|
+ serialize(&VarInt(0xF0F0F0F)),
|
|
|
+ vec![0xFEu8, 0xF, 0xF, 0xF, 0xF]
|
|
|
+ );
|
|
|
+ assert_eq!(
|
|
|
+ serialize(&VarInt(0xF0F0F0F0F0E0)),
|
|
|
+ vec![0xFFu8, 0xE0, 0xF0, 0xF0, 0xF0, 0xF0, 0xF0, 0, 0]
|
|
|
+ );
|
|
|
+ assert_eq!(
|
|
|
+ test_varint_encode(0xFF, &u64_to_array_le(0x100000000)).unwrap(),
|
|
|
+ VarInt(0x100000000)
|
|
|
+ );
|
|
|
+ assert_eq!(
|
|
|
+ test_varint_encode(0xFE, &u64_to_array_le(0x10000)).unwrap(),
|
|
|
+ VarInt(0x10000)
|
|
|
+ );
|
|
|
+ assert_eq!(
|
|
|
+ test_varint_encode(0xFD, &u64_to_array_le(0xFD)).unwrap(),
|
|
|
+ VarInt(0xFD)
|
|
|
+ );
|
|
|
+
|
|
|
+ // Test that length calc is working correctly
|
|
|
+ test_varint_len(VarInt(0), 1);
|
|
|
+ test_varint_len(VarInt(0xFC), 1);
|
|
|
+ test_varint_len(VarInt(0xFD), 3);
|
|
|
+ test_varint_len(VarInt(0xFFFF), 3);
|
|
|
+ test_varint_len(VarInt(0x10000), 5);
|
|
|
+ test_varint_len(VarInt(0xFFFFFFFF), 5);
|
|
|
+ test_varint_len(VarInt(0xFFFFFFFF + 1), 9);
|
|
|
+ test_varint_len(VarInt(u64::max_value()), 9);
|
|
|
+ }
|
|
|
+
|
|
|
+ fn test_varint_len(varint: VarInt, expected: usize) {
|
|
|
+ let mut encoder = io::Cursor::new(vec![]);
|
|
|
+ assert_eq!(varint.encode(&mut encoder).unwrap(), expected);
|
|
|
+ assert_eq!(varint.len(), expected);
|
|
|
+ }
|
|
|
+
|
|
|
+ fn test_varint_encode(n: u8, x: &[u8]) -> Result<VarInt> {
|
|
|
+ let mut input = [0u8; 9];
|
|
|
+ input[0] = n;
|
|
|
+ input[1..x.len() + 1].copy_from_slice(x);
|
|
|
+ deserialize_partial::<VarInt>(&input).map(|t| t.0)
|
|
|
+ }
|
|
|
+
|
|
|
+ #[test]
|
|
|
+ fn deserialize_nonminimal_vec() {
|
|
|
+ // Check the edges for variant int
|
|
|
+ assert_eq!(
|
|
|
+ discriminant(&test_varint_encode(0xFF, &u64_to_array_le(0x100000000 - 1)).unwrap_err()),
|
|
|
+ discriminant(&Error::NonMinimalVarInt)
|
|
|
+ );
|
|
|
+ assert_eq!(
|
|
|
+ discriminant(&test_varint_encode(0xFE, &u32_to_array_le(0x10000 - 1)).unwrap_err()),
|
|
|
+ discriminant(&Error::NonMinimalVarInt)
|
|
|
+ );
|
|
|
+ assert_eq!(
|
|
|
+ discriminant(&test_varint_encode(0xFD, &u16_to_array_le(0xFD - 1)).unwrap_err()),
|
|
|
+ discriminant(&Error::NonMinimalVarInt)
|
|
|
+ );
|
|
|
+
|
|
|
+ assert_eq!(
|
|
|
+ discriminant(&deserialize::<Vec<u8>>(&[0xfd, 0x00, 0x00]).unwrap_err()),
|
|
|
+ discriminant(&Error::NonMinimalVarInt)
|
|
|
+ );
|
|
|
+ assert_eq!(
|
|
|
+ discriminant(&deserialize::<Vec<u8>>(&[0xfd, 0xfc, 0x00]).unwrap_err()),
|
|
|
+ discriminant(&Error::NonMinimalVarInt)
|
|
|
+ );
|
|
|
+ assert_eq!(
|
|
|
+ discriminant(&deserialize::<Vec<u8>>(&[0xfd, 0xfc, 0x00]).unwrap_err()),
|
|
|
+ discriminant(&Error::NonMinimalVarInt)
|
|
|
+ );
|
|
|
+ assert_eq!(
|
|
|
+ discriminant(&deserialize::<Vec<u8>>(&[0xfe, 0xff, 0x00, 0x00, 0x00]).unwrap_err()),
|
|
|
+ discriminant(&Error::NonMinimalVarInt)
|
|
|
+ );
|
|
|
+ assert_eq!(
|
|
|
+ discriminant(&deserialize::<Vec<u8>>(&[0xfe, 0xff, 0xff, 0x00, 0x00]).unwrap_err()),
|
|
|
+ discriminant(&Error::NonMinimalVarInt)
|
|
|
+ );
|
|
|
+ assert_eq!(
|
|
|
+ discriminant(
|
|
|
+ &deserialize::<Vec<u8>>(&[0xff, 0xff, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00])
|
|
|
+ .unwrap_err()
|
|
|
+ ),
|
|
|
+ discriminant(&Error::NonMinimalVarInt)
|
|
|
+ );
|
|
|
+ assert_eq!(
|
|
|
+ discriminant(
|
|
|
+ &deserialize::<Vec<u8>>(&[0xff, 0xff, 0xff, 0xff, 0x00, 0x00, 0x00, 0x00, 0x00])
|
|
|
+ .unwrap_err()
|
|
|
+ ),
|
|
|
+ discriminant(&Error::NonMinimalVarInt)
|
|
|
+ );
|
|
|
+
|
|
|
+ let mut vec_256 = vec![0; 259];
|
|
|
+ vec_256[0] = 0xfd;
|
|
|
+ vec_256[1] = 0x00;
|
|
|
+ vec_256[2] = 0x01;
|
|
|
+ assert!(deserialize::<Vec<u8>>(&vec_256).is_ok());
|
|
|
+
|
|
|
+ let mut vec_253 = vec![0; 256];
|
|
|
+ vec_253[0] = 0xfd;
|
|
|
+ vec_253[1] = 0xfd;
|
|
|
+ vec_253[2] = 0x00;
|
|
|
+ assert!(deserialize::<Vec<u8>>(&vec_253).is_ok());
|
|
|
+ }
|
|
|
+
|
|
|
+ #[test]
|
|
|
+ fn serialize_vector_test() {
|
|
|
+ assert_eq!(serialize(&vec![1u8, 2, 3]), vec![3u8, 1, 2, 3]);
|
|
|
+ // TODO: test vectors of more interesting objects
|
|
|
+ }
|
|
|
+
|
|
|
+ #[test]
|
|
|
+ fn serialize_strbuf_test() {
|
|
|
+ assert_eq!(
|
|
|
+ serialize(&"Andrew".to_string()),
|
|
|
+ vec![6u8, 0x41, 0x6e, 0x64, 0x72, 0x65, 0x77]
|
|
|
+ );
|
|
|
+ }
|
|
|
+
|
|
|
+ #[test]
|
|
|
+ fn deserialize_int_test() {
|
|
|
+ // bool
|
|
|
+ assert!((deserialize(&[58u8, 0]) as Result<bool>).is_err());
|
|
|
+ assert_eq!(deserialize(&[58u8]).ok(), Some(true));
|
|
|
+ assert_eq!(deserialize(&[1u8]).ok(), Some(true));
|
|
|
+ assert_eq!(deserialize(&[0u8]).ok(), Some(false));
|
|
|
+ assert!((deserialize(&[0u8, 1]) as Result<bool>).is_err());
|
|
|
+
|
|
|
+ // u8
|
|
|
+ assert_eq!(deserialize(&[58u8]).ok(), Some(58u8));
|
|
|
+
|
|
|
+ // u16
|
|
|
+ assert_eq!(deserialize(&[0x01u8, 0x02]).ok(), Some(0x0201u16));
|
|
|
+ assert_eq!(deserialize(&[0xABu8, 0xCD]).ok(), Some(0xCDABu16));
|
|
|
+ assert_eq!(deserialize(&[0xA0u8, 0x0D]).ok(), Some(0xDA0u16));
|
|
|
+ let failure16: Result<u16> = deserialize(&[1u8]);
|
|
|
+ assert!(failure16.is_err());
|
|
|
+
|
|
|
+ // u32
|
|
|
+ assert_eq!(deserialize(&[0xABu8, 0xCD, 0, 0]).ok(), Some(0xCDABu32));
|
|
|
+ assert_eq!(
|
|
|
+ deserialize(&[0xA0u8, 0x0D, 0xAB, 0xCD]).ok(),
|
|
|
+ Some(0xCDAB0DA0u32)
|
|
|
+ );
|
|
|
+ let failure32: Result<u32> = deserialize(&[1u8, 2, 3]);
|
|
|
+ assert!(failure32.is_err());
|
|
|
+ // TODO: test negative numbers
|
|
|
+ assert_eq!(deserialize(&[0xABu8, 0xCD, 0, 0]).ok(), Some(0xCDABi32));
|
|
|
+ assert_eq!(
|
|
|
+ deserialize(&[0xA0u8, 0x0D, 0xAB, 0x2D]).ok(),
|
|
|
+ Some(0x2DAB0DA0i32)
|
|
|
+ );
|
|
|
+ let failurei32: Result<i32> = deserialize(&[1u8, 2, 3]);
|
|
|
+ assert!(failurei32.is_err());
|
|
|
+
|
|
|
+ // u64
|
|
|
+ assert_eq!(
|
|
|
+ deserialize(&[0xABu8, 0xCD, 0, 0, 0, 0, 0, 0]).ok(),
|
|
|
+ Some(0xCDABu64)
|
|
|
+ );
|
|
|
+ assert_eq!(
|
|
|
+ deserialize(&[0xA0u8, 0x0D, 0xAB, 0xCD, 0x99, 0, 0, 0x99]).ok(),
|
|
|
+ Some(0x99000099CDAB0DA0u64)
|
|
|
+ );
|
|
|
+ let failure64: Result<u64> = deserialize(&[1u8, 2, 3, 4, 5, 6, 7]);
|
|
|
+ assert!(failure64.is_err());
|
|
|
+ // TODO: test negative numbers
|
|
|
+ assert_eq!(
|
|
|
+ deserialize(&[0xABu8, 0xCD, 0, 0, 0, 0, 0, 0]).ok(),
|
|
|
+ Some(0xCDABi64)
|
|
|
+ );
|
|
|
+ assert_eq!(
|
|
|
+ deserialize(&[0xA0u8, 0x0D, 0xAB, 0xCD, 0x99, 0, 0, 0x99]).ok(),
|
|
|
+ Some(-0x66ffff663254f260i64)
|
|
|
+ );
|
|
|
+ let failurei64: Result<i64> = deserialize(&[1u8, 2, 3, 4, 5, 6, 7]);
|
|
|
+ assert!(failurei64.is_err());
|
|
|
+ }
|
|
|
+
|
|
|
+ #[test]
|
|
|
+ fn deserialize_vec_test() {
|
|
|
+ assert_eq!(deserialize(&[3u8, 2, 3, 4]).ok(), Some(vec![2u8, 3, 4]));
|
|
|
+ assert!((deserialize(&[4u8, 2, 3, 4, 5, 6]) as Result<Vec<u8>>).is_err());
|
|
|
+ }
|
|
|
+
|
|
|
+ #[test]
|
|
|
+ fn deserialize_strbuf_test() {
|
|
|
+ assert_eq!(
|
|
|
+ deserialize(&[6u8, 0x41, 0x6e, 0x64, 0x72, 0x65, 0x77]).ok(),
|
|
|
+ Some("Andrew".to_string())
|
|
|
+ );
|
|
|
+ assert_eq!(
|
|
|
+ deserialize(&[6u8, 0x41, 0x6e, 0x64, 0x72, 0x65, 0x77]).ok(),
|
|
|
+ Some(::std::borrow::Cow::Borrowed("Andrew"))
|
|
|
+ );
|
|
|
+ }
|
|
|
+}
|
narodnik