Merge pull request #193 from ethcore/rpc

jsonrpc http server

util/Cargo.toml

@@ -25,6 +25,7 @@ itertools = "0.4"
 crossbeam = "0.2"
 slab = { git = "https://github.com/arkpar/slab.git" }
 sha3 = { path = "sha3" }
+serde = "0.6.7"
 clippy = "*" # Always newest, since we use nightly
 
 [dev-dependencies]

util/src/hash.rs

@@ -8,6 +8,8 @@ use rand::os::OsRng;
 use bytes::{BytesConvertable,Populatable};
 use from_json::*;
 use uint::{Uint, U256};
+use rustc_serialize::hex::ToHex;
+use serde;
 
 /// Trait for a fixed-size byte array to be used as the output of hash functions.
 ///
@@ -215,6 +217,41 @@ macro_rules! impl_hash {
 			}
 		}
 
+		impl serde::Serialize for $from {
+			fn serialize<S>(&self, serializer: &mut S) -> Result<(), S::Error> 
+			where S: serde::Serializer {
+				let mut hex = "0x".to_owned();
+				hex.push_str(self.to_hex().as_ref());
+				serializer.visit_str(hex.as_ref())
+			}
+		}
+
+		impl serde::Deserialize for $from {
+			fn deserialize<D>(deserializer: &mut D) -> Result<$from, D::Error>
+			where D: serde::Deserializer {
+				struct HashVisitor;
+
+				impl serde::de::Visitor for HashVisitor {
+					type Value = $from;
+					
+					fn visit_str<E>(&mut self, value: &str) -> Result<Self::Value, E> where E: serde::Error {
+						// 0x + len
+						if value.len() != 2 + $size * 2 {
+							return Err(serde::Error::syntax("Invalid length."));
+						}
+
+						value[2..].from_hex().map(|ref v| $from::from_slice(v)).map_err(|_| serde::Error::syntax("Invalid valid hex."))
+					}
+
+					fn visit_string<E>(&mut self, value: String) -> Result<Self::Value, E> where E: serde::Error {
+						self.visit_str(value.as_ref())
+					}
+				}
+
+				deserializer.visit(HashVisitor)
+			}
+		}
+
 		impl FromJson for $from {
 			fn from_json(json: &Json) -> Self {
 				match *json {

util/src/lib.rs

@@ -55,6 +55,7 @@ extern crate secp256k1;
 extern crate arrayvec;
 extern crate elastic_array;
 extern crate crossbeam;
+extern crate serde;
 
 /// TODO [Gav Wood] Please document me
 pub mod standard;

util/src/uint.rs

@@ -23,6 +23,8 @@
 
 use standard::*;
 use from_json::*;
+use rustc_serialize::hex::ToHex;
+use serde;
 
 macro_rules! impl_map_from {
 	($thing:ident, $from:ty, $to:ty) => {
@@ -436,6 +438,17 @@ macro_rules! construct_uint {
 			}
 		}
 
+		impl serde::Serialize for $name {
+			fn serialize<S>(&self, serializer: &mut S) -> Result<(), S::Error> 
+			where S: serde::Serializer {
+				let mut hex = "0x".to_owned();
+				let mut bytes = [0u8; 8 * $n_words];
+				self.to_bytes(&mut bytes);
+				hex.push_str(bytes.to_hex().as_ref());
+				serializer.visit_str(hex.as_ref())
+			}
+		}
+
 		impl From<u64> for $name {
 			fn from(value: u64) -> $name {
 				let mut ret = [0; $n_words];