From 2608cd059666cbc3a720bdb9680fbfda71dd2fe7 Mon Sep 17 00:00:00 2001
From: agentelement <agentelement@protonmail.com>
Date: Thu, 26 Sep 2024 13:37:36 -0700
Subject: [PATCH] feat: get number of collisions from soup

---
 src/soup.rs | 8 ++++++++
 1 file changed, 8 insertions(+)

diff --git a/src/soup.rs b/src/soup.rs
index 3ef7102..020517a 100644
--- a/src/soup.rs
+++ b/src/soup.rs
@@ -11,6 +11,7 @@ use rand_chacha::ChaCha8Rng;
 #[derive(Debug, Clone)]
 pub struct Soup {
     expressions: Vec<Term>,
+    n_collisions: usize,
     reaction_rules: Vec<Term>,
     reduction_limit: usize,
     size_limit: usize,
@@ -106,6 +107,7 @@ impl Soup {
             discard_identity: cfg.discard_identity,
             discard_free_variable_expressions: cfg.discard_free_variable_expressions,
             rng,
+            n_collisions: 0,
         }
     }
 
@@ -146,6 +148,7 @@ impl Soup {
             return Err(ReactionError::HasFreeVariables);
         }
 
+
         Ok((expr, n))
     }
 
@@ -175,6 +178,7 @@ impl Soup {
         let mut n_successful_reactions = 0;
         for rule in &self.reaction_rules {
             let result = self.collide(rule.clone(), left.clone(), right.clone());
+            self.n_collisions += 1;
             match result {
                 Ok((value, n)) => {
                     let datum = CollisionResult {
@@ -353,6 +357,10 @@ impl Soup {
     pub fn len(&self) -> usize {
         self.expressions.len()
     }
+
+    pub fn collisions(&self) -> usize {
+        self.n_collisions
+    }
 }
 
 impl Tape {