Check error types in vm_core.rs + simplify code

src/types/relocatable.rs

@@ -7,7 +7,7 @@ use num_traits::{FromPrimitive, ToPrimitive, Zero};
 use serde::{Deserialize, Serialize};
 use std::{
     fmt::{self, Display},
-    ops::Add,
+    ops::{Add, AddAssign},
 };
 
 #[derive(Eq, Hash, PartialEq, PartialOrd, Clone, Copy, Debug, Serialize, Deserialize)]
@@ -95,6 +95,12 @@ impl Add<usize> for Relocatable {
     }
 }
 
+impl AddAssign<usize> for Relocatable {
+    fn add_assign(&mut self, rhs: usize) {
+        self.offset += rhs
+    }
+}
+
 impl Add<i32> for Relocatable {
     type Output = Relocatable;
     fn add(self, other: i32) -> Self {
@@ -825,4 +831,11 @@ mod tests {
             String::from("6")
         )
     }
+
+    #[test]
+    fn relocatable_add_assign_usize() {
+        let mut addr = Relocatable::from((1, 0));
+        addr += 1;
+        assert_eq!(addr, Relocatable::from((1, 1)))
+    }
 }

src/vm/errors/memory_errors.rs

@@ -75,4 +75,6 @@ pub enum MemoryError {
     MsgNonInt(Relocatable),
     #[error("Failed to convert String: {0} to FieldElement")]
     FailedStringToFieldElementConversion(String),
+    #[error("Failed to fetch {0} return values, ap is only {1}")]
+    FailedToGetReturnValues(usize, Relocatable),
 }

src/vm/errors/vm_errors.rs

@@ -32,6 +32,12 @@ pub enum VirtualMachineError {
     UnconstrainedResJumpRel,
     #[error("Res.UNCONSTRAINED cannot be used with Opcode.ASSERT_EQ")]
     UnconstrainedResAssertEq,
+    #[error("An integer value as Res cannot be used with PcUpdate.JUMP_REL")]
+    JumpRelNotInt,
+    #[error(
+        "Failed to compute Res.MUL: Could not complete computation of non pure values {0} * {1}"
+    )]
+    ComputeResRelocatableMul(MaybeRelocatable, MaybeRelocatable),
     #[error("Couldn't compute operand {0} at address {1}")]
     FailedToComputeOperands(String, Relocatable),
     #[error("An ASSERT_EQ instruction failed: {0} != {1}.")]
@@ -42,8 +48,6 @@ pub enum VirtualMachineError {
     CantWriteReturnFp(MaybeRelocatable, MaybeRelocatable),
     #[error("Couldn't get or load dst")]
     NoDst,
-    #[error("Pure Value Error")]
-    PureValue,
     #[error("Invalid res value: {0}")]
     InvalidRes(i64),
     #[error("Invalid opcode value: {0}")]
@@ -144,6 +148,8 @@ pub enum VirtualMachineError {
     NegBuiltinBase,
     #[error("Security Error: Invalid Memory Value: temporary address not relocated: {0}")]
     InvalidMemoryValueTemporaryAddress(Relocatable),
+    #[error("accessed_addresses is None.")]
+    MissingAccessedAddresses,
     #[error(transparent)]
     Other(Box<dyn Error>),
 }