From 6badb6c738ffff2c2c4305e424e53a505f0b82aa Mon Sep 17 00:00:00 2001
From: glihm <dev@glihm.net>
Date: Wed, 27 Sep 2023 20:01:46 -0600
Subject: [PATCH] fix no-std

---
 starknet-core/src/types/messaging.rs | 25 +++++++++++++++++--------
 1 file changed, 17 insertions(+), 8 deletions(-)

diff --git a/starknet-core/src/types/messaging.rs b/starknet-core/src/types/messaging.rs
index de40dbdd..0b87382f 100644
--- a/starknet-core/src/types/messaging.rs
+++ b/starknet-core/src/types/messaging.rs
@@ -39,12 +39,15 @@ impl MsgL1ToL2 {
         let high = FieldElement::from_byte_slice_be(&high.to_bytes_be()).unwrap();
         let low = FieldElement::from_byte_slice_be(&low.to_bytes_be()).unwrap();
 
-        vec![low, high]
+        let mut u256 = Vec::new();
+        u256.push(low);
+        u256.push(high);
+        u256
     }
 
     /// Computes the message hash.
     pub fn hash(&self) -> BigUint {
-        let mut buf: Vec<u8> = vec![];
+        let mut buf: Vec<u8> = Vec::new();
 
         // As EthAddress is only 20 bytes, we do want the 32 bytes
         // to compute the hash as done in solidity `uint256(uint160(fromAddress))`.
@@ -94,12 +97,18 @@ impl L1HandlerTransaction {
 
 #[cfg(test)]
 mod test {
+    use alloc::vec::Vec;
+
     use super::*;
     use crate::types::EthAddress;
 
     #[test]
     #[cfg_attr(target_arch = "wasm32", wasm_bindgen_test::wasm_bindgen_test)]
     fn test_message_hash_compute() {
+        let mut payload = Vec::new();
+        payload.push(FieldElement::ONE);
+        payload.push(FieldElement::TWO);
+
         // Tx used for this test on goerli:
         // 0x46144b600db00853c57a8cf003030ffaa51a810758ef5bfe1bb42bf55b7af38.
         let msg = MsgL1ToL2 {
@@ -113,7 +122,7 @@ mod test {
                 "0x02f15cff7b0eed8b9beb162696cf4e3e0e35fa7032af69cd1b7d2ac67a13f40f",
             )
             .unwrap(),
-            payload: vec![FieldElement::ONE, FieldElement::TWO],
+            payload,
             nonce: 782870_u128.into(),
         };
 
@@ -132,6 +141,10 @@ mod test {
     fn test_message_from_l1_handler_tx() {
         // Tx used for this test on goerli:
         // 0x46144b600db00853c57a8cf003030ffaa51a810758ef5bfe1bb42bf55b7af38.
+        let mut calldata = Vec::new();
+        calldata.push(FieldElement::from_hex_be("0xbe3c44c09bc1a3566f3e1ca12e5aba0fa4ca72be").unwrap());
+        calldata.push(FieldElement::ONE);
+        calldata.push(FieldElement::TWO);
 
         let tx = L1HandlerTransaction {
             transaction_hash: FieldElement::from_hex_be(
@@ -148,11 +161,7 @@ mod test {
                 "0x2f15cff7b0eed8b9beb162696cf4e3e0e35fa7032af69cd1b7d2ac67a13f40f",
             )
             .unwrap(),
-            calldata: vec![
-                FieldElement::from_hex_be("0xbe3c44c09bc1a3566f3e1ca12e5aba0fa4ca72be").unwrap(),
-                FieldElement::ONE,
-                FieldElement::TWO,
-            ],
+            calldata,
         };
 
         let msg = tx.parse_msg_l1_to_l2();