Reduce allocations round 1

src/bots/leek.rs

@@ -1,45 +1,34 @@
-macro_rules! hashmap {
-    ($( $key: expr => $val: expr ),*) => {{
-        let mut map = ::std::collections::HashMap::new();
-        $( map.insert($key, $val); )*
-        map
-    }}
-}
+use arrayvec::ArrayString;
 
-pub fn mock(target: &str) -> String {
-    let mut builder = String::with_capacity(target.len());
+pub fn mock(target: &str) -> ArrayString<512> {
+    let mut builder = ArrayString::<512>::new();
 
     for char in target.chars() {
         if rand::random() {
-            builder.push_str(&char.to_uppercase().to_string());
+            builder.push(char.to_ascii_uppercase());
         } else {
-            builder.push_str(&char.to_lowercase().to_string());
+            builder.push(char.to_ascii_lowercase());
         }
     }
 
     builder
 }
 
-pub fn leetify(target: &str) -> String {
-    let letters = hashmap! {
-        'a' => '4',
-        'e' => '3',
-        'i' => '1',
-        'o' => '0',
-        'g' => '6',
-        's' => '5',
-        't' => '7',
-        'b' => '8'
-    };
-
-    let mut builder = String::with_capacity(target.len());
+pub fn leetify(target: &str) -> ArrayString<512> {
+    let mut builder = ArrayString::<512>::new();
 
     for char in target.chars() {
-        if let Some(repl) = letters.get(&char.to_ascii_lowercase()) {
-            builder.push(*repl);
-        } else {
-            builder.push(char);
-        }
+        builder.push(match char {
+            'a' => '4',
+            'e' => '3',
+            'i' => '1',
+            'o' => '0',
+            'g' => '6',
+            's' => '5',
+            't' => '7',
+            'b' => '8',
+            _ => char,
+        });
     }
 
     builder

src/main.rs

@@ -193,7 +193,6 @@ async fn handle_privmsg(
                 None => &nick,
             }
             .trim();
-            tracing::info!(user);
             if let Some(prev_msg) = state.last_msgs.get(user) {
                 let resp = bots::leek::leetify(prev_msg);
                 state.client.privmsg(&channel, &resp).await?;