feat(interpreter): expose mutable access methods on stack and memory (#1219)

* feat(interpreter): allow mutable stack access

* feat(interpreter): allow mutable memory access

* chore: inline

Author: DaniPopes

crates/interpreter/src/interpreter/shared_memory.rs

@@ -296,7 +296,7 @@ impl SharedMemory {
 
     /// Returns a mutable reference to the memory of the current context.
     #[inline]
-    fn context_memory_mut(&mut self) -> &mut [u8] {
+    pub fn context_memory_mut(&mut self) -> &mut [u8] {
         let buf_len = self.buffer.len();
         // SAFETY: access bounded by buffer length
         unsafe { self.buffer.get_unchecked_mut(self.last_checkpoint..buf_len) }

crates/interpreter/src/interpreter/stack.rs

@@ -58,13 +58,19 @@ impl Stack {
         self.data.is_empty()
     }
 
-    /// Returns the underlying data of the stack.
+    /// Returns a reference to the underlying data buffer.
     #[inline]
     pub fn data(&self) -> &Vec<U256> {
         &self.data
     }
 
-    /// Consumes the stack and returns the underlying data.
+    /// Returns a mutable reference to the underlying data buffer.
+    #[inline]
+    pub fn data_mut(&mut self) -> &mut Vec<U256> {
+        &mut self.data
+    }
+
+    /// Consumes the stack and returns the underlying data buffer.
     #[inline]
     pub fn into_data(self) -> Vec<U256> {
         self.data