Replace rustc_hex crate with hex

Author: axic

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

@@ -1,4 +1,4 @@
-extern crate rustc_hex;
+extern crate hex;
 extern crate wasmi;
 #[macro_use]
 extern crate log;
@@ -8,7 +8,6 @@ extern crate ssz;
 extern crate ssz_derive;
 
 use primitive_types::U256;
-use rustc_hex::{FromHex, ToHex};
 use serde::{Deserialize, Serialize};
 use ssz::{Decode, Encode};
 use std::convert::{TryFrom, TryInto};
@@ -35,8 +34,8 @@ 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(),
         }
@@ -193,7 +192,7 @@ 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)
@@ -231,7 +230,7 @@ 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 => {
@@ -497,7 +496,8 @@ 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))
     }
 }
 
@@ -518,7 +518,8 @@ 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))
     }
 }
 
@@ -574,7 +575,7 @@ 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()))
     }
 }
 
@@ -593,7 +594,7 @@ 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,
@@ -723,7 +724,7 @@ 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()));
     }
@@ -791,7 +792,7 @@ impl TryFrom<TestShardBlock> for ShardBlock {
         Ok(ShardBlock {
             env: input.env,
             data: ShardBlockBody {
-                data: input.data.from_hex()?,
+                data: hex::decode(input.data)?,
             },
         })
     }