From 22a97dcedd58da60ceb2ae64f8c021208edc50b5 Mon Sep 17 00:00:00 2001
From: fmoletta <99273364+fmoletta@users.noreply.github.com>
Date: Wed, 3 Apr 2024 19:29:12 -0300
Subject: [PATCH] Remove `CairoRunner::add_additional_hash_builtin` &
 `VirtualMachine::disable_trace` (#1658)

* Remove add_additional_hash_builtin

* Remove disable_trace

* Add changelog entry

* Remove tests
---
 CHANGELOG.md                      |  2 ++
 vm/src/vm/runners/cairo_runner.rs | 42 -------------------------------
 vm/src/vm/vm_core.rs              | 12 ---------
 3 files changed, 2 insertions(+), 54 deletions(-)

diff --git a/CHANGELOG.md b/CHANGELOG.md
index c4da03eec2..0619cbc798 100644
--- a/CHANGELOG.md
+++ b/CHANGELOG.md
@@ -2,6 +2,8 @@
 
 #### Upcoming Changes
 
+* BREAKING: Remove `CairoRunner::add_additional_hash_builtin` & `VirtualMachine::disable_trace`[#1658](https://github.com/lambdaclass/cairo-vm/pull/1658)
+
 * feat: output builtin add_attribute method [#1691](https://github.com/lambdaclass/cairo-vm/pull/1691)
 
 * feat: Add zero segment [#1668](https://github.com/lambdaclass/cairo-vm/pull/1668)
diff --git a/vm/src/vm/runners/cairo_runner.rs b/vm/src/vm/runners/cairo_runner.rs
index 7becd79eea..af4048697a 100644
--- a/vm/src/vm/runners/cairo_runner.rs
+++ b/vm/src/vm/runners/cairo_runner.rs
@@ -1256,22 +1256,6 @@ impl CairoRunner {
         Ok(())
     }
 
-    //NOTE: No longer needed in 0.11
-    /// Add (or replace if already present) a custom hash builtin. Returns a Relocatable
-    /// with the new builtin base as the segment index.
-    pub fn add_additional_hash_builtin(&self, vm: &mut VirtualMachine) -> Relocatable {
-        // Create, initialize and insert the new custom hash runner.
-        let mut builtin: BuiltinRunner = HashBuiltinRunner::new(Some(32), true).into();
-        builtin.initialize_segments(&mut vm.segments);
-        let segment_index = builtin.base() as isize;
-        vm.builtin_runners.push(builtin);
-
-        Relocatable {
-            segment_index,
-            offset: 0,
-        }
-    }
-
     // Iterates over the program builtins in reverse, calling BuiltinRunner::final_stack on each of them and returns the final pointer
     // This method is used by cairo-vm-py to replace starknet functionality
     pub fn get_builtins_final_stack(
@@ -4799,32 +4783,6 @@ mod tests {
         assert_eq!(bitwise_builtin.stop_ptr, Some(5));
     }
 
-    /// Test that add_additional_hash_builtin() creates an additional builtin.
-    #[test]
-    #[cfg_attr(target_arch = "wasm32", wasm_bindgen_test)]
-    fn add_additional_hash_builtin() {
-        let program = program!();
-        let cairo_runner = cairo_runner!(program);
-        let mut vm = vm!();
-
-        let num_builtins = vm.builtin_runners.len();
-        cairo_runner.add_additional_hash_builtin(&mut vm);
-        assert_eq!(vm.builtin_runners.len(), num_builtins + 1);
-
-        let builtin = vm
-            .builtin_runners
-            .last()
-            .expect("missing last builtin runner");
-        match builtin {
-            BuiltinRunner::Hash(builtin) => {
-                assert_eq!(builtin.base(), 0);
-                assert_eq!(builtin.ratio(), Some(32));
-                assert!(builtin.included);
-            }
-            _ => unreachable!(),
-        }
-    }
-
     #[test]
     #[cfg_attr(target_arch = "wasm32", wasm_bindgen_test)]
     fn run_from_entrypoint_custom_program_test() {
diff --git a/vm/src/vm/vm_core.rs b/vm/src/vm/vm_core.rs
index 8bd47ea1df..9a20d8887a 100644
--- a/vm/src/vm/vm_core.rs
+++ b/vm/src/vm/vm_core.rs
@@ -942,9 +942,6 @@ impl VirtualMachine {
 
         Err(VirtualMachineError::NoSignatureBuiltin)
     }
-    pub fn disable_trace(&mut self) {
-        self.trace = None
-    }
 
     #[cfg(feature = "with_tracer")]
     pub fn relocate_segments(&self) -> Result<Vec<usize>, MemoryError> {
@@ -3842,15 +3839,6 @@ mod tests {
         assert_eq!(builtins[1].name(), BITWISE_BUILTIN_NAME);
     }
 
-    #[test]
-    #[cfg_attr(target_arch = "wasm32", wasm_bindgen_test)]
-    fn disable_trace() {
-        let mut vm = VirtualMachine::new(true);
-        assert!(vm.trace.is_some());
-        vm.disable_trace();
-        assert!(vm.trace.is_none());
-    }
-
     #[test]
     #[cfg_attr(target_arch = "wasm32", wasm_bindgen_test)]
     fn get_range_for_continuous_memory() {