refactor(starknet_api): use const in sierra version

crates/blockifier/src/transaction/test_utils.rs

@@ -359,8 +359,8 @@ pub fn create_all_resource_bounds(
 
 pub fn calculate_class_info_for_testing(contract_class: ContractClass) -> ClassInfo {
     let (sierra_program_length, sierra_version) = match contract_class {
-        ContractClass::V0(_) => (0, SierraVersion::zero()),
-        ContractClass::V1(_) => (100, SierraVersion::latest()),
+        ContractClass::V0(_) => (0, SierraVersion::DEPRECATED),
+        ContractClass::V1(_) => (100, SierraVersion::LATEST),
     };
     ClassInfo::new(&contract_class, sierra_program_length, 100, sierra_version).unwrap()
 }

crates/blockifier_reexecution/src/state_reader/reexecution_state_reader.rs

@@ -39,7 +39,7 @@ pub trait ReexecutionStateReader {
                     &legacy_to_contract_class_v0(legacy)?,
                     DEPRECATED_CONTRACT_SIERRA_SIZE,
                     abi_length,
-                    SierraVersion::zero(),
+                    SierraVersion::DEPRECATED,
                 )?)
             }
         }

crates/papyrus_execution/src/lib.rs

@@ -835,7 +835,7 @@ fn to_blockifier_tx(
                 &deprecated_class.into(),
                 DEPRECATED_CONTRACT_SIERRA_SIZE,
                 abi_length,
-                SierraVersion::zero(),
+                SierraVersion::DEPRECATED,
             )
             .map_err(|err| ExecutionError::BadDeclareTransaction {
                 tx: DeclareTransaction::V0(declare_tx.clone()),
@@ -862,7 +862,7 @@ fn to_blockifier_tx(
                 &deprecated_class.into(),
                 DEPRECATED_CONTRACT_SIERRA_SIZE,
                 abi_length,
-                SierraVersion::zero(),
+                SierraVersion::DEPRECATED,
             )
             .map_err(|err| ExecutionError::BadDeclareTransaction {
                 tx: DeclareTransaction::V1(declare_tx.clone()),

crates/papyrus_execution/src/test_utils.rs

@@ -313,7 +313,7 @@ impl TxsScenarioBuilder {
             DUMMY_SIERRA_SIZE,
             0,
             false,
-            SierraVersion::latest(),
+            SierraVersion::LATEST,
         );
         self.txs.push(tx);
         self

crates/starknet_api/src/contract_class.rs

@@ -52,19 +52,15 @@ impl ContractClass {
 pub struct SierraVersion(Version);
 
 impl SierraVersion {
-    pub fn new(major: u64, minor: u64, patch: u64) -> Self {
-        Self(Version::new(major, minor, patch))
-    }
-
-    /// Version of deprecated contract class.
-    pub fn zero() -> Self {
-        Self(Version::new(0, 0, 0))
-    }
+    /// Version of deprecated contract class (Cairo 0).
+    pub const DEPRECATED: Self = Self(Version::new(0, 0, 0));
 
     // TODO(Aviv): Implement logic to fetch the latest version dynamically from Cargo.toml and write
     // tests to ensure that it matches the value returned by this function.
-    pub fn latest() -> Self {
-        Self::new(2, 8, 4)
+    pub const LATEST: Self = Self(Version::new(2, 8, 4));
+
+    pub fn new(major: u64, minor: u64, patch: u64) -> Self {
+        Self(Version::new(major, minor, patch))
     }
 
     /// Converts a sierra program to a SierraVersion.
@@ -105,7 +101,7 @@ impl SierraVersion {
 
 impl Default for SierraVersion {
     fn default() -> Self {
-        Self::latest()
+        Self::LATEST
     }
 }