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use std::io; use byteorder::{ReadBytesExt, WriteBytesExt, LittleEndian}; use bytes::Bytes; use compact::Compact; use hash::{H32, H48, H96, H160, H256, H264, H512, H520}; use compact_integer::CompactInteger; use {Serializable, Stream, Deserializable, Reader, Error}; impl Serializable for bool { #[inline] fn serialize(&self, s: &mut Stream) { s.write_u8(*self as u8).unwrap(); } #[inline] fn serialized_size(&self) -> usize { 1 } } impl Serializable for i32 { #[inline] fn serialize(&self, s: &mut Stream) { s.write_i32::<LittleEndian>(*self).unwrap(); } #[inline] fn serialized_size(&self) -> usize { 4 } } impl Serializable for i64 { #[inline] fn serialize(&self, s: &mut Stream) { s.write_i64::<LittleEndian>(*self).unwrap(); } #[inline] fn serialized_size(&self) -> usize { 8 } } impl Serializable for u8 { #[inline] fn serialize(&self, s: &mut Stream) { s.write_u8(*self).unwrap(); } #[inline] fn serialized_size(&self) -> usize { 1 } } impl Serializable for u16 { #[inline] fn serialize(&self, s: &mut Stream) { s.write_u16::<LittleEndian>(*self).unwrap(); } #[inline] fn serialized_size(&self) -> usize { 2 } } impl Serializable for u32 { #[inline] fn serialize(&self, s: &mut Stream) { s.write_u32::<LittleEndian>(*self).unwrap(); } #[inline] fn serialized_size(&self) -> usize { 4 } } impl Serializable for u64 { #[inline] fn serialize(&self, s: &mut Stream) { s.write_u64::<LittleEndian>(*self).unwrap(); } #[inline] fn serialized_size(&self) -> usize { 8 } } impl Deserializable for bool { #[inline] fn deserialize<T>(reader: &mut Reader<T>) -> Result<Self, Error> where T: io::Read { let value = try!(reader.read_u8()); match value { 0 => Ok(false), 1 => Ok(true), _ => Err(Error::MalformedData), } } } impl Deserializable for i32 { #[inline] fn deserialize<T>(reader: &mut Reader<T>) -> Result<Self, Error> where T: io::Read { Ok(try!(reader.read_i32::<LittleEndian>())) } } impl Deserializable for i64 { #[inline] fn deserialize<T>(reader: &mut Reader<T>) -> Result<Self, Error> where T: io::Read { Ok(try!(reader.read_i64::<LittleEndian>())) } } impl Deserializable for u8 { #[inline] fn deserialize<T>(reader: &mut Reader<T>) -> Result<Self, Error> where T: io::Read { Ok(try!(reader.read_u8())) } } impl Deserializable for u16 { #[inline] fn deserialize<T>(reader: &mut Reader<T>) -> Result<Self, Error> where T: io::Read { Ok(try!(reader.read_u16::<LittleEndian>())) } } impl Deserializable for u32 { #[inline] fn deserialize<T>(reader: &mut Reader<T>) -> Result<Self, Error> where T: io::Read { Ok(try!(reader.read_u32::<LittleEndian>())) } } impl Deserializable for u64 { #[inline] fn deserialize<T>(reader: &mut Reader<T>) -> Result<Self, Error> where T: io::Read { Ok(try!(reader.read_u64::<LittleEndian>())) } } impl Serializable for String { fn serialize(&self, stream: &mut Stream) { let bytes: &[u8] = self.as_ref(); stream .append(&CompactInteger::from(bytes.len())) .append_slice(bytes); } #[inline] fn serialized_size(&self) -> usize { let bytes: &[u8] = self.as_ref(); CompactInteger::from(bytes.len()).serialized_size() + bytes.len() } } impl<'a> Serializable for &'a str { fn serialize(&self, stream: &mut Stream) { let bytes: &[u8] = self.as_bytes(); stream .append(&CompactInteger::from(bytes.len())) .append_slice(bytes); } #[inline] fn serialized_size(&self) -> usize { let bytes: &[u8] = self.as_bytes(); CompactInteger::from(bytes.len()).serialized_size() + bytes.len() } } impl Deserializable for String { fn deserialize<T>(reader: &mut Reader<T>) -> Result<Self, Error> where T: io::Read { let bytes: Bytes = try!(reader.read()); Ok(String::from_utf8_lossy(&bytes).into_owned()) } } macro_rules! impl_ser_for_hash { ($name: ident, $size: expr) => { impl Serializable for $name { fn serialize(&self, stream: &mut Stream) { stream.append_slice(&**self); } #[inline] fn serialized_size(&self) -> usize { $size } } impl Deserializable for $name { fn deserialize<T>(reader: &mut Reader<T>) -> Result<Self, Error> where T: io::Read { let mut result = Self::default(); try!(reader.read_slice(&mut *result)); Ok(result) } } } } impl_ser_for_hash!(H32, 4); impl_ser_for_hash!(H48, 6); impl_ser_for_hash!(H96, 12); impl_ser_for_hash!(H160, 20); impl_ser_for_hash!(H256, 32); impl_ser_for_hash!(H264, 33); impl_ser_for_hash!(H512, 64); impl_ser_for_hash!(H520, 65); impl Serializable for Bytes { fn serialize(&self, stream: &mut Stream) { stream .append(&CompactInteger::from(self.len())) .append_slice(self); } #[inline] fn serialized_size(&self) -> usize { CompactInteger::from(self.len()).serialized_size() + self.len() } } impl Deserializable for Bytes { fn deserialize<T>(reader: &mut Reader<T>) -> Result<Self, Error> where T: io::Read { let len = try!(reader.read::<CompactInteger>()); let mut bytes = Bytes::new_with_len(len.into()); try!(reader.read_slice(&mut bytes)); Ok(bytes) } } impl Serializable for Compact { fn serialize(&self, stream: &mut Stream) { stream.append(&u32::from(*self)); } } impl Deserializable for Compact { fn deserialize<T>(reader: &mut Reader<T>) -> Result<Self, Error> where T: io::Read { reader.read::<u32>().map(Compact::new) } } #[cfg(test)] mod tests { use bytes::Bytes; use {serialize, deserialize, deserialize_iterator, Stream, Reader, Error}; #[test] fn test_reader_read() { let buffer = vec![ 1, 2, 0, 3, 0, 0, 0, 4, 0, 0, 0, 0, 0, 0, 0 ]; let mut reader = Reader::new(&buffer); assert!(!reader.is_finished()); assert_eq!(1u8, reader.read().unwrap()); assert_eq!(2u16, reader.read().unwrap()); assert_eq!(3u32, reader.read().unwrap()); assert_eq!(4u64, reader.read().unwrap()); assert!(reader.is_finished()); assert_eq!(Error::UnexpectedEnd, reader.read::<u8>().unwrap_err()); } #[test] fn test_reader_iterator() { let buffer = vec![ 1u8, 0, 2, 0, 3, 0, 4, 0, ]; let result = deserialize_iterator(&buffer as &[u8]).collect::<Result<Vec<u16>, _>>().unwrap(); assert_eq!(result, vec![1u16, 2, 3, 4]); } #[test] fn test_stream_append() { let mut stream = Stream::default(); stream .append(&1u8) .append(&2u16) .append(&3u32) .append(&4u64); let expected = vec![ 1u8, 2, 0, 3, 0, 0, 0, 4, 0, 0, 0, 0, 0, 0, 0, ].into(); assert_eq!(stream.out(), expected); } #[test] fn test_bytes_deserialize() { let raw: Bytes = "020145".into(); let expected: Bytes = "0145".into(); assert_eq!(expected, deserialize(raw.as_ref()).unwrap()); } #[test] fn test_bytes_serialize() { let expected: Bytes = "020145".into(); let bytes: Bytes = "0145".into(); assert_eq!(expected, serialize(&bytes)); } #[test] fn test_string_serialize() { let expected: Bytes = "0776657273696f6e".into(); let s: String = "version".into(); assert_eq!(serialize(&s), expected); let expected: Bytes = "00".into(); let s: String = "".into(); assert_eq!(serialize(&s), expected); } #[test] fn test_string_deserialize() { let raw: Bytes = "0776657273696f6e".into(); let expected: String = "version".into(); assert_eq!(expected, deserialize::<_, String>(raw.as_ref()).unwrap()); let raw: Bytes = "00".into(); let expected: String = "".into(); assert_eq!(expected, deserialize::<_, String>(raw.as_ref()).unwrap()); } #[test] fn test_steam_append_slice() { let mut slice = [0u8; 4]; slice[0] = 0x64; let mut stream = Stream::default(); stream.append_slice(&slice); assert_eq!(stream.out(), "64000000".into()); } }