Replace rustc_hex crate with hex

Cargo.toml

@@ -9,8 +9,8 @@ publish = false
 edition = "2018"
 
 [dependencies]
+hex = "0.4.0"
 wasmi = "0.5"
-rustc-hex = "1.0"
 serde = { version = "1.0", features = ["derive"] }
 serde_yaml = "0.8"
 log = "0.4"

src/main.rs

@@ -1,11 +1,10 @@
-extern crate rustc_hex;
+extern crate hex;
 extern crate wasmi;
 #[macro_use]
 extern crate log;
 extern crate env_logger;
 
 use primitive_types::U256;
-use rustc_hex::{FromHex, ToHex};
 use serde::{Deserialize, Serialize};
 use std::convert::{TryFrom, TryInto};
 use std::env;
@@ -37,8 +36,8 @@ impl From<std::io::Error> for ScoutError {
  }
 }
 
-impl From<rustc_hex::FromHexError> for ScoutError {
- fn from(error: rustc_hex::FromHexError) -> Self {
+impl From<hex::FromHexError> for ScoutError {
+ fn from(error: hex::FromHexError) -> Self {
  ScoutError {
  0: error.description().to_string(),
  }
@@ -248,7 +247,7 @@ impl<'a> Externals for Runtime<'a> {
  let tmp = memory
  .get(ptr, length as usize)
  .expect("expects reading from memory to succeed");
- debug!("deposit: {}", tmp.to_hex());
+ debug!("deposit: {}", hex::encode(tmp.clone()));
  self.deposits.push(tmp);
 
  Ok(None)
@@ -286,7 +285,7 @@ impl<'a> Externals for Runtime<'a> {
  memory
  .get_into(ptr, &mut buf)
  .expect("expects reading from memory to succeed");
- debug!("print.hex: {}", buf.to_hex());
+ debug!("print.hex: {}", hex::encode(buf).clone());
  Ok(None)
  }
  BIGNUM_ADD256_FUNC => {
@@ -552,7 +551,8 @@ impl Default for BLSPubKey {
 
 impl fmt::Debug for BLSPubKey {
  fn fmt(&self, f: &mut fmt::Formatter<'_>) -> fmt::Result {
- write!(f, "{}", self.0.to_hex())
+ unimplemented!()
+ // write!(f, "{}", hex::encode(self.0))
  }
 }
 
@@ -573,7 +573,8 @@ impl Default for BLSSignature {
 
 impl fmt::Debug for BLSSignature {
  fn fmt(&self, f: &mut fmt::Formatter<'_>) -> fmt::Result {
- write!(f, "{}", self.0.to_hex())
+ unimplemented!()
+ // write!(f, "{}", hex::encode(self.0))
  }
 }
 
@@ -653,7 +654,7 @@ pub struct ShardState {
 
 impl fmt::Display for ShardBlockBody {
  fn fmt(&self, f: &mut fmt::Formatter<'_>) -> fmt::Result {
- write!(f, "{}", self.data.to_hex())
+ write!(f, "{}", hex::encode(self.data.clone()))
  }
 }
 
@@ -672,7 +673,7 @@ impl fmt::Display for ShardState {
  let states: Vec<String> = self
  .exec_env_states
  .iter()
- .map(|x| x.bytes.to_hex())
+ .map(|state| hex::encode(state.bytes))
  .collect();
  write!(
  f,
@@ -784,7 +785,7 @@ struct TestFile {
 }
 
 fn hex_to_slice(input: &str, output: &mut [u8]) -> Result<(), ScoutError> {
- let tmp = input.from_hex()?;
+ let tmp = hex::decode(input)?;
  if tmp.len() != output.len() {
  return Err(ScoutError("Length mismatch from hex input".to_string()));
  }
@@ -866,7 +867,7 @@ impl TryFrom<TestShardBlock> for ShardBlock {
  Ok(ShardBlock {
  env: input.env,
  data: ShardBlockBody {
- data: input.data.from_hex()?,
+ data: hex::decode(input.data)?,
  },
  })
  }