More hints

.gitignore

@@ -1,6 +1,8 @@
 # Rust artifacts
 Cargo.lock
 target/
+.idea
+.vscode
 
 # Snos artifacts
 build/*

scripts/setup-tests.sh

@@ -2,14 +2,12 @@
 
 CAIRO_VER="0.12.2"
 
-if ! command -v cairo-compile > /dev/null
-then
+if ! command -v cairo-compile >/dev/null; then
     echo "please start cairo($CAIRO_VER) dev environment"
     exit 1
 fi
 
-if ! command -v starknet-compile-deprecated > /dev/null
-then
+if ! command -v starknet-compile-deprecated >/dev/null; then
     echo "please start cairo($CAIRO_VER) dev environment"
     exit 1
 fi
@@ -19,7 +17,7 @@ git submodule update --init
 
 FETCHED_CAIRO_VER="$(cat cairo-lang/src/starkware/cairo/lang/VERSION)"
 
-if [ "$CAIRO_VER" != "$FETCHED_CAIRO_VER" ]; then 
+if [ "$CAIRO_VER" != "$FETCHED_CAIRO_VER" ]; then
     echo "incorrect cairo ver($FETCHED_CAIRO_VAR) expecting $CAIROVER"
     exit 1
 fi
@@ -29,7 +27,6 @@ echo -e "setting up cairo dependencies...\n"
 cp tests/dependencies/test_contract_interface.cairo cairo-lang/src/starkware/starknet/core/test_contract/
 cp tests/dependencies/deprecated_syscalls.cairo cairo-lang/src/starkware/starknet/core/test_contract/
 
-
 # setup token_for_testing path
 mkdir -p cairo-lang/src/starkware/starknet/std_contracts/ERC20
 cp tests/dependencies/ERC20.cairo cairo-lang/src/starkware/starknet/std_contracts/ERC20/
@@ -38,7 +35,6 @@ cp tests/dependencies/permitted.cairo cairo-lang/src/starkware/starknet/std_cont
 mkdir -p cairo-lang/src/starkware/starknet/std_contracts/upgradability_proxy
 cp tests/dependencies/initializable.cairo cairo-lang/src/starkware/starknet/std_contracts/upgradability_proxy
 
-
 # compile cairo programs
 echo -e "compmiling cairo programs...\n"
 mkdir -p build/programs

src/hints/hints_raw.rs

@@ -67,3 +67,14 @@ pub const LOAD_NEXT_TX: &str = "tx = next(transactions)\ntx_type_bytes = \
 pub const LOAD_CONTRACT_ADDRESS: &str = "from starkware.starknet.business_logic.transaction.objects import \
                                          InternalL1Handler\nids.contract_address = (\ntx.contract_address if \
                                          isinstance(tx, InternalL1Handler) else tx.sender_address\n)";
+
+pub const PREPARE_CONSTRUCTOR_EXECUTION: &str = "ids.contract_address_salt = tx.contract_address_salt\nids.class_hash \
+                                                 = tx.class_hash\nids.constructor_calldata_size = \
+                                                 len(tx.constructor_calldata)\nids.constructor_calldata = \
+                                                 segments.gen_arg(arg=tx.constructor_calldata)";
+
+pub const TRANSACTION_VERSION: &str = "memory[ap] = to_felt_or_relocatable(tx.version)";
+
+pub const ASSERT_TRANSACTION_HASH: &str =
+    "assert ids.transaction_hash == tx.hash_value, (\n    \"Computed transaction_hash is inconsistent with the hash \
+     in the transaction. \"\n    f\"Computed hash = {ids.transaction_hash}, Expected hash = {tx.hash_value}.\")";

src/hints/mod.rs

@@ -5,7 +5,7 @@ pub mod hints_raw;
 use std::any::Any;
 use std::collections::HashMap;
 use std::rc::Rc;
-use std::slice::Iter;
+use std::vec::IntoIter;
 
 use cairo_vm::felt::Felt252;
 use cairo_vm::hint_processor::builtin_hint_processor::builtin_hint_processor_definition::{
@@ -20,6 +20,9 @@ use cairo_vm::vm::errors::hint_errors::HintError;
 use cairo_vm::vm::vm_core::VirtualMachine;
 
 use crate::config::DEFAULT_INPUT_PATH;
+use crate::hints::hints_raw::{
+    ASSERT_TRANSACTION_HASH, LOAD_NEXT_TX, PREPARE_CONSTRUCTOR_EXECUTION, TRANSACTION_VERSION,
+};
 use crate::io::{InternalTransaction, StarknetOsInput};
 
 pub fn sn_hint_processor() -> BuiltinHintProcessor {
@@ -71,6 +74,21 @@ pub fn sn_hint_processor() -> BuiltinHintProcessor {
     let transactions_len_hint = HintFunc(Box::new(transactions_len));
     hint_processor.add_hint(String::from(hints_raw::TRANSACTIONS_LEN), Rc::new(transactions_len_hint));
 
+    let enter_syscall_scopes_hint = HintFunc(Box::new(enter_syscall_scopes));
+    hint_processor.add_hint(String::from(hints_raw::ENTER_SYSCALL_SCOPES), Rc::new(enter_syscall_scopes_hint));
+
+    let load_next_tx_hint = HintFunc(Box::new(load_next_tx));
+    hint_processor.add_hint(String::from(LOAD_NEXT_TX), Rc::new(load_next_tx_hint));
+
+    let prepare_constructor_execution_hint = HintFunc(Box::new(prepare_constructor_execution));
+    hint_processor.add_hint(String::from(PREPARE_CONSTRUCTOR_EXECUTION), Rc::new(prepare_constructor_execution_hint));
+
+    let transaction_version_hint = HintFunc(Box::new(transaction_version));
+    hint_processor.add_hint(String::from(TRANSACTION_VERSION), Rc::new(transaction_version_hint));
+
+    let assert_transaction_hash_hint = HintFunc(Box::new(assert_transaction_hash));
+    hint_processor.add_hint(String::from(ASSERT_TRANSACTION_HASH), Rc::new(assert_transaction_hash_hint));
+
     hint_processor
 }
 
@@ -242,7 +260,7 @@ pub fn enter_syscall_scopes(
     _constants: &HashMap<String, Felt252>,
 ) -> Result<(), HintError> {
     let os_input = exec_scopes.get::<StarknetOsInput>("os_input").unwrap();
-    let transactions: Box<dyn Any> = Box::new([os_input.transactions.into_iter()].into_iter());
+    let transactions: Box<dyn Any> = Box::new(os_input.transactions.into_iter());
     exec_scopes.enter_scope(HashMap::from_iter([(String::from("transactions"), transactions)]));
     Ok(())
 }
@@ -259,9 +277,87 @@ pub fn load_next_tx(
     ap_tracking: &ApTracking,
     _constants: &HashMap<String, Felt252>,
 ) -> Result<(), HintError> {
-    let mut transactions = exec_scopes.get::<Iter<InternalTransaction>>("transactions")?;
+    let mut transactions = exec_scopes.get::<IntoIter<InternalTransaction>>("transactions")?;
     // Safe to unwrap because the remaining number of txs is checked in the cairo code.
     let tx = transactions.next().unwrap();
     exec_scopes.insert_value("transactions", transactions);
+    exec_scopes.insert_value("tx", tx.clone());
     insert_value_from_var_name("tx_type", Felt252::from_bytes_be(tx.r#type.as_bytes()), vm, ids_data, ap_tracking)
 }
+
+/// Implements hint:
+///
+/// ids.contract_address_salt = tx.contract_address_salt
+/// ids.class_hash = tx.class_hash
+/// ids.constructor_calldata_size = len(tx.constructor_calldata)
+/// ids.constructor_calldata = segments.gen_arg(arg=tx.constructor_calldata)
+pub fn prepare_constructor_execution(
+    vm: &mut VirtualMachine,
+    exec_scopes: &mut ExecutionScopes,
+    ids_data: &HashMap<String, HintReference>,
+    ap_tracking: &ApTracking,
+    _constants: &HashMap<String, Felt252>,
+) -> Result<(), HintError> {
+    let tx = exec_scopes.get::<InternalTransaction>("tx")?;
+    // Safe to unwrap because the remaining number of txs is checked in the cairo code.
+    insert_value_from_var_name(
+        "contract_address_salt",
+        tx.contract_address_salt.unwrap_or(Felt252::from(0)),
+        vm,
+        ids_data,
+        ap_tracking,
+    )?;
+    insert_value_from_var_name("class_hash", tx.class_hash.unwrap_or(Felt252::from(0)), vm, ids_data, ap_tracking)?;
+
+    let constructor_calldata_size = match &tx.constructor_calldata {
+        None => 0,
+        Some(calldata) => calldata.len(),
+    };
+    insert_value_from_var_name("constructor_calldata_size", constructor_calldata_size, vm, ids_data, ap_tracking)?;
+
+    let constructor_calldata: Vec<MaybeRelocatable> = match tx.constructor_calldata {
+        None => vec![],
+        Some(calldata) => calldata.iter().map(|felt| felt.into()).collect(),
+    };
+    let constructor_calldata_base = vm.add_memory_segment();
+    vm.load_data(constructor_calldata_base, &constructor_calldata)?;
+    insert_value_from_var_name("constructor_calldata", constructor_calldata_base, vm, ids_data, ap_tracking)
+}
+
+/// Implements hint:
+///
+/// memory[ap] = to_felt_or_relocatable(tx.version)
+pub fn transaction_version(
+    vm: &mut VirtualMachine,
+    exec_scopes: &mut ExecutionScopes,
+    _ids_data: &HashMap<String, HintReference>,
+    _ap_tracking: &ApTracking,
+    _constants: &HashMap<String, Felt252>,
+) -> Result<(), HintError> {
+    let tx = exec_scopes.get::<InternalTransaction>("tx")?;
+    insert_value_into_ap(vm, tx.version.expect("Transaction version should be set"))
+}
+
+/// Implements hint:
+///
+/// assert ids.transaction_hash == tx.hash_value, (
+/// "Computed transaction_hash is inconsistent with the hash in the transaction. "
+/// f"Computed hash = {ids.transaction_hash}, Expected hash = {tx.hash_value}.")
+pub fn assert_transaction_hash(
+    vm: &mut VirtualMachine,
+    exec_scopes: &mut ExecutionScopes,
+    ids_data: &HashMap<String, HintReference>,
+    ap_tracking: &ApTracking,
+    _constants: &HashMap<String, Felt252>,
+) -> Result<(), HintError> {
+    let tx = exec_scopes.get::<InternalTransaction>("tx")?;
+    let transaction_hash = get_integer_from_var_name("transaction_hash", vm, ids_data, ap_tracking)?.into_owned();
+
+    assert_eq!(
+        tx.hash_value, transaction_hash,
+        "Computed transaction_hash is inconsistent with the hash in the transaction. Computed hash = {}, Expected \
+         hash = {}.",
+        transaction_hash, tx.hash_value
+    );
+    Ok(())
+}

tests/hints.rs

@@ -117,7 +117,6 @@ fn get_block_mapping_test(mut os_input_hint_processor: BuiltinHintProcessor) {
 }
 
 #[rstest]
-#[ignore]
 fn load_next_tx_test(mut os_input_hint_processor: BuiltinHintProcessor) {
     let program = "build/programs/load_next_tx.json";