append Now accepts lists again

src/block.rs

@@ -301,8 +301,7 @@ impl SealedBlock {
 	pub fn rlp_bytes(&self) -> Bytes {
 		let mut block_rlp = RlpStream::new_list(3);
 		self.block.base.header.stream_rlp(&mut block_rlp, Seal::With);
-		block_rlp.begin_list(self.block.receipts.len());
+		block_rlp.append(&self.block.base.transactions);
-		for t in &self.block.base.transactions { t.rlp_append(&mut block_rlp); }
 		block_rlp.append_raw(&self.uncle_bytes, 1);
 		block_rlp.out()
 	}

src/extras.rs

@@ -150,7 +150,7 @@ impl Encodable for BlockDetails {
 		s.append(&self.number);
 		s.append(&self.total_difficulty);
 		s.append(&self.parent);
-		s.append_list(&self.children);
+		s.append(&self.children);
 	}
 }
 
@@ -185,7 +185,7 @@ impl Decodable for BlockLogBlooms {
 
 impl Encodable for BlockLogBlooms {
 	fn rlp_append(&self, s: &mut RlpStream) {
-		s.append_list(&self.blooms);
+		s.append(&self.blooms);
 	}
 }
 
@@ -232,7 +232,7 @@ impl Decodable for BlocksBlooms {
 impl Encodable for BlocksBlooms {
 	fn rlp_append(&self, s: &mut RlpStream) {
 		let blooms_ref: &[H2048] = &self.blooms;
-		s.append_list(&blooms_ref);
+		s.append(&blooms_ref);
 	}
 }
 

src/log_entry.rs

@@ -16,7 +16,7 @@ impl Encodable for LogEntry {
 	fn rlp_append(&self, s: &mut RlpStream) {
 		s.begin_list(3);
 		s.append(&self.address);
-		s.append_list(&self.topics);
+		s.append(&self.topics);
 		s.append(&self.data);
 	}
 }

src/receipt.rs

@@ -33,6 +33,6 @@ impl Encodable for Receipt {
 		s.append(&self.state_root);
 		s.append(&self.gas_used);
 		s.append(&self.log_bloom);
-		s.append_list(&self.logs);
+		s.append(&self.logs);
 	}
 }

src/verification.rs

@@ -237,7 +237,7 @@ mod tests {
 		for t in transactions {
 			rlp.append_raw(&t.rlp_bytes_opt(Seal::With), 1);
 		}
-		rlp.append_list(&uncles);
+		rlp.append(&uncles);
 		rlp.out().to_vec()
 	}
 
@@ -362,7 +362,7 @@ mod tests {
 
 		let good_uncles = vec![ good_uncle1.clone(), good_uncle2.clone() ];
 		let mut uncles_rlp = RlpStream::new();
-		uncles_rlp.append_list(&good_uncles);
+		uncles_rlp.append(&good_uncles);
 		let good_uncles_hash = uncles_rlp.as_raw().sha3();
 		let good_transactions_root = ordered_trie_root(good_transactions.iter().map(|t| t.rlp_bytes_opt(Seal::With)).collect());
 

util/src/bytes.rs

@@ -268,7 +268,6 @@ macro_rules! impl_map_to_bytes {
 }
 
 impl_map_to_bytes!(usize, u64);
-impl_map_to_bytes!(u8, u64);
 impl_map_to_bytes!(u16, u64);
 impl_map_to_bytes!(u32, u64);
 

util/src/journaldb.rs

@@ -86,8 +86,8 @@ impl JournalDB {
 
 			let mut r = RlpStream::new_list(3);
 			r.append(id);
-			r.append_list(&self.inserts);
+			r.append(&self.inserts);
-			r.append_list(&self.removes);
+			r.append(&self.removes);
 			try!(self.backing.put(&last, r.as_raw()));
 			self.inserts.clear();
 			self.removes.clear();

util/src/network/session.rs

@@ -202,7 +202,7 @@ impl Session {
 		rlp.begin_list(5)
 			.append(&host.protocol_version)
 			.append(&host.client_version)
-			.append_list(&host.capabilities)
+			.append(&host.capabilities)
 			.append(&host.listen_port)
 			.append(host.id());
 		self.connection.send_packet(&rlp.out())

util/src/rlp/mod.rs

@@ -30,7 +30,6 @@
 //! * You want to get view onto rlp-slice.
 //! * You don't want to decode whole rlp at once.
 
-use std::ops::Deref;
 /// TODO [Gav Wood] Please document me
 pub mod rlptraits;
 /// TODO [Gav Wood] Please document me
@@ -46,7 +45,7 @@ pub mod rlpstream;
 mod tests;
 
 pub use self::rlperrors::DecoderError;
-pub use self::rlptraits::{Decoder, Decodable, View, Stream, Encodable, Encoder};
+pub use self::rlptraits::{Decoder, Decodable, View, Stream, Encodable, Encoder, RlpEncodable};
 pub use self::untrusted_rlp::{UntrustedRlp, UntrustedRlpIterator, PayloadInfo, Prototype};
 pub use self::rlpin::{Rlp, RlpIterator};
 pub use self::rlpstream::{RlpStream};
@@ -91,26 +90,8 @@ pub fn decode<T>(bytes: &[u8]) -> T where T: Decodable {
 /// 	assert_eq!(out, vec![0x83, b'c', b'a', b't']);
 /// }
 /// ```
-pub fn encode<E>(object: &E) -> ElasticArray1024<u8> where E: Encodable {
+pub fn encode<E>(object: &E) -> ElasticArray1024<u8> where E: RlpEncodable {
 	let mut stream = RlpStream::new();
 	stream.append(object);
 	stream.drain()
 }
-
-/// Shortcut function to encode a list to rlp.
-///
-/// ```rust
-/// extern crate ethcore_util as util;
-/// use util::rlp::*;
-///
-/// fn main () {
-/// 	let animals = vec!["cat", "dog"];
-/// 	let out = encode_list(&animals).to_vec();
-/// 	assert_eq!(out, vec![0xc8, 0x83, b'c', b'a', b't', 0x83, b'd', b'o', b'g']);
-/// }
-/// ```
-pub fn encode_list<I, E>(list: &I) -> ElasticArray1024<u8> where I: Deref<Target = [E]>, E: Encodable {
-	let mut stream = RlpStream::new();
-	stream.append_list(list);
-	stream.drain()
-}

util/src/rlp/rlpstream.rs

@@ -2,7 +2,7 @@ use std::ops::Deref;
 use elastic_array::*;
 use bytes::{ToBytes, VecLike};
 use rlp::{Stream, Encoder, Encodable};
-use rlp::rlptraits::ByteEncodable;
+use rlp::rlptraits::{ByteEncodable, RlpEncodable};
 
 #[derive(Debug, Copy, Clone)]
 struct ListInfo {
@@ -43,7 +43,7 @@ impl Stream for RlpStream {
 		stream
 	}
 
-	fn append<'a, E>(&'a mut self, value: &E) -> &'a mut Self where E: Encodable {
+	fn append<'a, E>(&'a mut self, value: &E) -> &'a mut Self where E: RlpEncodable {
 		self.finished_list = false;
 		value.rlp_append(self);
 		if !self.finished_list {
@@ -70,16 +70,6 @@ impl Stream for RlpStream {
 		self
 	}
 
-	fn append_list<I, E>(&mut self, list: &I) -> &mut Self where I: Deref<Target = [E]>, E: Encodable {
-		let items = list.deref();
-		self.begin_list(items.len());
-		for el in items.iter() {
-			el.rlp_append(self);
-		}
-		self.note_appended(items.len());
-		self
-	}
-
 	fn append_empty_data(&mut self) -> &mut RlpStream {
 		// self push raw item
 		self.encoder.bytes.push(0x80);
@@ -134,6 +124,15 @@ impl RlpStream {
 		self.encoder.emit_value(object);
 	}
 
+	fn append_internal<'a, E>(&'a mut self, value: &E) -> &'a mut Self where E: Encodable {
+		self.finished_list = false;
+		value.rlp_append(self);
+		if !self.finished_list {
+			self.note_appended(1);
+		}
+		self
+	}
+
 	/// Try to finish lists
 	fn note_appended(&mut self, inserted_items: usize) -> () {
 		if self.unfinished_lists.len() == 0 {
@@ -234,7 +233,6 @@ impl Encoder for BasicEncoder {
 	}
 }
 
-
 impl<T> ByteEncodable for T where T: ToBytes {
 	fn to_bytes<V: VecLike<u8>>(&self, out: &mut V) {
 		ToBytes::to_bytes(self, out)
@@ -245,23 +243,27 @@ impl<T> ByteEncodable for T where T: ToBytes {
 	}
 }
 
-impl<'a> ByteEncodable for &'a[u8] {
+struct U8Slice<'a>(&'a [u8]);
+
+impl<'a> ByteEncodable for U8Slice<'a> {
 	fn to_bytes<V: VecLike<u8>>(&self, out: &mut V) {
-		out.vec_extend(self)
+		out.vec_extend(self.0)
 	}
 
 	fn bytes_len(&self) -> usize {
-		self.len()
+		self.0.len()
 	}
 }
 
-impl ByteEncodable for Vec<u8> {
+impl<'a> Encodable for &'a[u8] {
-	fn to_bytes<V: VecLike<u8>>(&self, out: &mut V) {
+	fn rlp_append(&self, s: &mut RlpStream) {
-		out.vec_extend(self.deref())
+		s.append_value(&U8Slice(self))
+	}
 }
 
-	fn bytes_len(&self) -> usize {
+impl Encodable for Vec<u8> {
-		self.len()
+	fn rlp_append(&self, s: &mut RlpStream) {
+		s.append_value(&U8Slice(self.deref()))
 	}
 }
 
@@ -270,3 +272,41 @@ impl<T> Encodable for T where T: ByteEncodable {
 		s.append_value(self)
 	}
 }
+
+struct EncodableU8 (u8);
+
+impl ByteEncodable for EncodableU8 {
+	fn to_bytes<V: VecLike<u8>>(&self, out: &mut V) {
+		out.vec_push(self.0)
+	}
+
+	fn bytes_len(&self) -> usize { 1 }
+}
+
+impl RlpEncodable for u8 {
+	fn rlp_append(&self, s: &mut RlpStream) {
+		s.append_value(&EncodableU8(*self))
+	}
+}
+
+impl<'a, T> Encodable for &'a[T] where T: Encodable {
+	fn rlp_append(&self, s: &mut RlpStream) {
+		s.begin_list(self.len());
+		for el in self.iter() {
+			s.append_internal(el);
+		}
+	}
+}
+
+impl<T> Encodable for Vec<T>  where T: Encodable {
+	fn rlp_append(&self, s: &mut RlpStream) {
+		Encodable::rlp_append(&self.deref(), s);
+	}
+}
+
+impl<T> RlpEncodable for T where T: Encodable {
+	fn rlp_append(&self, s: &mut RlpStream) {
+		Encodable::rlp_append(self, s)
+	}
+}
+

util/src/rlp/rlptraits.rs

@@ -223,7 +223,7 @@ pub trait ByteEncodable {
 	fn bytes_len(&self) -> usize;
 }
 
-/// Structure encodable to RLP
+/// Structure encodable to RLP. Implement this trait for 
 pub trait Encodable {
 	/// Append a value to the stream
 	fn rlp_append(&self, s: &mut RlpStream);
@@ -239,6 +239,12 @@ pub trait Encodable {
 	fn rlp_sha3(&self) -> H256 { self.rlp_bytes().deref().sha3() }
 }
 
+/// Encodable wrapper trait required to handle special case of encoding a &[u8] as string and not as list
+pub trait RlpEncodable {
+	/// Append a value to the stream
+	fn rlp_append(&self, s: &mut RlpStream);
+}
+
 /// TODO [debris] Please document me
 pub trait Stream: Sized {
 
@@ -261,7 +267,7 @@ pub trait Stream: Sized {
 	/// 	assert_eq!(out, vec![0xc8, 0x83, b'c', b'a', b't', 0x83, b'd', b'o', b'g']);
 	/// }
 	/// ```
-	fn append<'a, E>(&'a mut self, value: &E) -> &'a mut Self where E: Encodable;
+	fn append<'a, E>(&'a mut self, value: &E) -> &'a mut Self where E: RlpEncodable;
 
 	/// Declare appending the list of given size, chainable.
 	///
@@ -279,21 +285,6 @@ pub trait Stream: Sized {
 	/// ```
 	fn begin_list(&mut self, len: usize) -> &mut Self;
 
-	/// Append the given list, chainable.
-	///
-	/// ```rust
-	/// extern crate ethcore_util as util;
-	/// use util::rlp::*;
-	///
-	/// fn main () {
-	/// 	let mut stream = RlpStream::new_list(1);
-	/// 	stream.append_list(&vec!["cat", "dog"]);
-	/// 	let out = stream.out().to_vec();
-	/// 	assert_eq!(out, vec![0xc9, 0xc8, 0x83, b'c', b'a', b't', 0x83, b'd', b'o', b'g']);
-	/// }
-	/// ```
-	fn append_list<I, E>(&mut self, list: &I) -> &mut Self where I: Deref<Target = [E]>, E: Encodable;
-
 	/// Apends null to the end of stream, chainable.
 	///
 	/// ```rust

util/src/rlp/tests.rs

@@ -77,7 +77,6 @@ fn rlp_iter() {
 }
 
 struct ETestPair<T>(T, Vec<u8>) where T: rlp::Encodable;
-struct ETestVecPair<T>(Vec<T>, Vec<u8>) where T: rlp::Encodable;
 
 fn run_encode_tests<T>(tests: Vec<ETestPair<T>>)
 	where T: rlp::Encodable
@@ -88,15 +87,6 @@ fn run_encode_tests<T>(tests: Vec<ETestPair<T>>)
 	}
 }
 
-fn run_encode_list_tests<T>(tests: Vec<ETestVecPair<T>>)
-	where T: rlp::Encodable
-{
-	for t in &tests {
-		let res = rlp::encode_list(&t.0);
-		assert_eq!(&res[..], &t.1[..]);
-	}
-}
-
 #[test]
 fn encode_u16() {
 	let tests = vec![
@@ -188,19 +178,19 @@ fn encode_vector_u8() {
 #[test]
 fn encode_vector_u64() {
 	let tests = vec![
-		ETestVecPair(vec![], vec![0xc0]),
+		ETestPair(vec![], vec![0xc0]),
-		ETestVecPair(vec![15u64], vec![0xc1, 0x0f]),
+		ETestPair(vec![15u64], vec![0xc1, 0x0f]),
-		ETestVecPair(vec![1, 2, 3, 7, 0xff], vec![0xc6, 1, 2, 3, 7, 0x81, 0xff]),
+		ETestPair(vec![1, 2, 3, 7, 0xff], vec![0xc6, 1, 2, 3, 7, 0x81, 0xff]),
-		ETestVecPair(vec![0xffffffff, 1, 2, 3, 7, 0xff], vec![0xcb, 0x84, 0xff, 0xff, 0xff, 0xff,  1, 2, 3, 7, 0x81, 0xff]),
+		ETestPair(vec![0xffffffff, 1, 2, 3, 7, 0xff], vec![0xcb, 0x84, 0xff, 0xff, 0xff, 0xff,  1, 2, 3, 7, 0x81, 0xff]),
 	];
-	run_encode_list_tests(tests);
+	run_encode_tests(tests);
 }
 
 #[test]
 fn encode_vector_str() {
-	let tests = vec![ETestVecPair(vec!["cat", "dog"],
+	let tests = vec![ETestPair(vec!["cat", "dog"],
 							   vec![0xc8, 0x83, b'c', b'a', b't', 0x83, b'd', b'o', b'g'])];
-	run_encode_list_tests(tests);
+	run_encode_tests(tests);
 }
 
 struct DTestPair<T>(T, Vec<u8>) where T: rlp::Decodable + fmt::Debug + cmp::Eq;
@@ -227,9 +217,8 @@ fn decode_vector_u8() {
 #[test]
 fn decode_untrusted_u16() {
 	let tests = vec![
-		DTestPair(0u16, vec![0u8]),
+		DTestPair(0x100u16, vec![0x82, 0x01, 0x00]),
-		DTestPair(0x100, vec![0x82, 0x01, 0x00]),
+		DTestPair(0xffffu16, vec![0x82, 0xff, 0xff]),
-		DTestPair(0xffff, vec![0x82, 0xff, 0xff]),
 	];
 	run_decode_tests(tests);
 }
@@ -237,9 +226,8 @@ fn decode_untrusted_u16() {
 #[test]
 fn decode_untrusted_u32() {
 	let tests = vec![
-		DTestPair(0u32, vec![0u8]),
+		DTestPair(0x10000u32, vec![0x83, 0x01, 0x00, 0x00]),
-		DTestPair(0x10000, vec![0x83, 0x01, 0x00, 0x00]),
+		DTestPair(0xffffffu32, vec![0x83, 0xff, 0xff, 0xff]),
-		DTestPair(0xffffff, vec![0x83, 0xff, 0xff, 0xff]),
 	];
 	run_decode_tests(tests);
 }
@@ -247,9 +235,8 @@ fn decode_untrusted_u32() {
 #[test]
 fn decode_untrusted_u64() {
 	let tests = vec![
-		DTestPair(0u64, vec![0u8]),
+		DTestPair(0x1000000u64, vec![0x84, 0x01, 0x00, 0x00, 0x00]),
-		DTestPair(0x1000000, vec![0x84, 0x01, 0x00, 0x00, 0x00]),
+		DTestPair(0xFFFFFFFFu64, vec![0x84, 0xff, 0xff, 0xff, 0xff]),
-		DTestPair(0xFFFFFFFF, vec![0x84, 0xff, 0xff, 0xff, 0xff]),
 	];
 	run_decode_tests(tests);
 }
@@ -350,7 +337,7 @@ fn test_rlp_json() {
 #[test]
 fn test_decoding_array() {
 	let v = vec![5u16, 2u16];
-	let res = rlp::encode_list(&v);
+	let res = rlp::encode(&v);
 	let arr: [u16; 2] = rlp::decode(&res);
 	assert_eq!(arr[0], 5);
 	assert_eq!(arr[1], 2);