diff --git a/src/lib.rs b/src/lib.rs
index e92872f..773256d 100644
--- a/src/lib.rs
+++ b/src/lib.rs
@@ -1,151 +1,22 @@
 pub mod internal;
-use regex::Regex;
-
-#[cfg(feature = "serialization")]
-use serde::{Deserialize, Serialize};
 
 #[macro_export]
 macro_rules! duos(($($kind:expr, $pattern:expr),*) => { vec![ $( ($kind, Regex::new($pattern).unwrap()) ),* ] };);
 
 pub struct Tokenizer<'a, T> {
     source: &'a str,
-    duos: &'a [(T, Regex)],
+    duos: &'a [(T, regex::Regex)],
     cursor: usize,
     line: usize,
     column: usize,
 }
 
-#[cfg(not(feature = "serialization"))]
-#[derive(Debug, Clone, PartialEq)]
-pub struct Token<'a, T> {
-    pub kind: &'a T,
-    pub value: &'a str,
-    pub pos: (usize, usize),
-}
-
-#[cfg(not(feature = "serialization"))]
-impl<'a, T> Tokenizer<'a, T> {
-    #[inline]
-    pub fn new(source: &'a str, duos: &'static [(T, Regex)]) -> Self {
-        Self {
-            source,
-            duos,
-            cursor: 0,
-            line: 1,
-            column: 1,
-        }
-    }
-
-    pub fn next(&mut self) -> Result<Option<Token<'a, T>>, Box<dyn std::error::Error>> {
-        if self.cursor >= self.source.len() {
-            return Ok(None);
-        }
-
-        for (kind, regex) in self.duos.iter() {
-            if let Some(result) = regex.find(&self.source[self.cursor..]) {
-                let value: &str = result.as_str();
-
-                let token = Token {
-                    kind,
-                    value,
-                    pos: (self.line, self.column),
-                };
-
-                let len = result.len();
-                self.cursor += len;
-                let newlines_count = bytecount::count(value.as_bytes(), b'\n');
-                if newlines_count > 0 {
-                    self.line += newlines_count;
-                    self.column = len - value.rfind('\n').unwrap_or(1);
-                } else {
-                    self.column += len;
-                }
-
-                return Ok(Some(token));
-            }
-        }
-
-        Err(format!(
-            "Failed to match at line {}, column {}.",
-            self.line, self.column
-        ))?
-    }
-
-    pub fn tokenize_all(&mut self) -> Result<Vec<Token<'a, T>>, Box<dyn std::error::Error>> {
-        let mut tokens = Vec::new();
-        while let Some(token) = self.next()? {
-            tokens.push(token);
-        }
-
-        Ok(tokens)
-    }
-}
-
 #[cfg(feature = "serialization")]
-#[derive(Debug, Clone, PartialEq, Serialize, Deserialize)]
-pub struct Token<T> {
-    pub kind: T,
-    pub value: String,
-    pub pos: (usize, usize),
-}
-
+mod tokenizer_owned;
 #[cfg(feature = "serialization")]
-impl<'a, T> Tokenizer<'a, T>
-where
-    T: Clone,
-{
-    #[inline]
-    pub fn new(source: &'a str, duos: &'static [(T, Regex)]) -> Self {
-        Self {
-            source,
-            duos,
-            cursor: 0,
-            line: 1,
-            column: 1,
-        }
-    }
-
-    pub fn next(&mut self) -> Result<Option<Token<T>>, Box<dyn std::error::Error>> {
-        if self.cursor >= self.source.len() {
-            return Ok(None);
-        }
-
-        for (kind, regex) in self.duos.iter() {
-            if let Some(result) = regex.find(&self.source[self.cursor..]) {
-                let value: &str = result.as_str();
-
-                let token = Token {
-                    kind: kind.clone(),
-                    value: value.to_string(),
-                    pos: (self.line, self.column),
-                };
+pub use tokenizer_owned::Token;
 
-                let len = result.len();
-                self.cursor += len;
-                let newlines_count = bytecount::count(value.as_bytes(), b'\n');
-                if newlines_count > 0 {
-                    self.line += newlines_count;
-                    self.column = len - value.rfind('\n').unwrap_or(1);
-                } else {
-                    self.column += len;
-                }
-
-                return Ok(Some(token));
-            }
-        }
-
-        Err(format!(
-            "Failed to match at line {}, column {}.",
-            self.line, self.column
-        ))?
-    }
-
-    pub fn tokenize_all(&mut self) -> Result<Vec<Token<T>>, Box<dyn std::error::Error>> {
-        let mut tokens = Vec::new();
-        while let Some(token) = self.next()? {
-            tokens.push(token);
-        }
-
-        Ok(tokens)
-    }
-}
+#[cfg(not(feature = "serialization"))]
+mod tokenizer_ref;
+#[cfg(not(feature = "serialization"))]
+pub use tokenizer_ref::Token;
diff --git a/src/tokenizer_owned.rs b/src/tokenizer_owned.rs
new file mode 100644
index 0000000..32e4408
--- /dev/null
+++ b/src/tokenizer_owned.rs
@@ -0,0 +1,69 @@
+use crate::Tokenizer;
+use regex::Regex;
+use serde::{Deserialize, Serialize};
+
+#[derive(Debug, Clone, PartialEq, Serialize, Deserialize)]
+pub struct Token<T> {
+    pub kind: T,
+    pub value: String,
+    pub pos: (usize, usize),
+}
+impl<'a, T> Tokenizer<'a, T>
+where
+    T: Clone,
+{
+    #[inline]
+    pub fn new(source: &'a str, duos: &'static [(T, Regex)]) -> Self {
+        Self {
+            source,
+            duos,
+            cursor: 0,
+            line: 1,
+            column: 1,
+        }
+    }
+
+    pub fn next(&mut self) -> Result<Option<Token<T>>, Box<dyn std::error::Error>> {
+        if self.cursor >= self.source.len() {
+            return Ok(None);
+        }
+
+        for (kind, regex) in self.duos.iter() {
+            if let Some(result) = regex.find(&self.source[self.cursor..]) {
+                let value: &str = result.as_str();
+
+                let token = Token {
+                    kind: kind.clone(),
+                    value: value.to_string(),
+                    pos: (self.line, self.column),
+                };
+
+                let len = result.len();
+                self.cursor += len;
+                let newlines_count = bytecount::count(value.as_bytes(), b'\n');
+                if newlines_count > 0 {
+                    self.line += newlines_count;
+                    self.column = len - value.rfind('\n').unwrap_or(1);
+                } else {
+                    self.column += len;
+                }
+
+                return Ok(Some(token));
+            }
+        }
+
+        Err(format!(
+            "Failed to match at line {}, column {}.",
+            self.line, self.column
+        ))?
+    }
+
+    pub fn tokenize_all(&mut self) -> Result<Vec<Token<T>>, Box<dyn std::error::Error>> {
+        let mut tokens = Vec::new();
+        while let Some(token) = self.next()? {
+            tokens.push(token);
+        }
+
+        Ok(tokens)
+    }
+}
diff --git a/src/tokenizer_ref.rs b/src/tokenizer_ref.rs
new file mode 100644
index 0000000..cb405e0
--- /dev/null
+++ b/src/tokenizer_ref.rs
@@ -0,0 +1,66 @@
+use crate::Tokenizer;
+use regex::Regex;
+
+#[derive(Debug, Clone, PartialEq)]
+pub struct Token<'a, T> {
+    pub kind: &'a T,
+    pub value: &'a str,
+    pub pos: (usize, usize),
+}
+
+impl<'a, T> Tokenizer<'a, T> {
+    #[inline]
+    pub fn new(source: &'a str, duos: &'static [(T, Regex)]) -> Self {
+        Self {
+            source,
+            duos,
+            cursor: 0,
+            line: 1,
+            column: 1,
+        }
+    }
+
+    pub fn next(&mut self) -> Result<Option<Token<'a, T>>, Box<dyn std::error::Error>> {
+        if self.cursor >= self.source.len() {
+            return Ok(None);
+        }
+
+        for (kind, regex) in self.duos.iter() {
+            if let Some(result) = regex.find(&self.source[self.cursor..]) {
+                let value: &str = result.as_str();
+
+                let token = Token {
+                    kind,
+                    value,
+                    pos: (self.line, self.column),
+                };
+
+                let len = result.len();
+                self.cursor += len;
+                let newlines_count = bytecount::count(value.as_bytes(), b'\n');
+                if newlines_count > 0 {
+                    self.line += newlines_count;
+                    self.column = len - value.rfind('\n').unwrap_or(1);
+                } else {
+                    self.column += len;
+                }
+
+                return Ok(Some(token));
+            }
+        }
+
+        Err(format!(
+            "Failed to match at line {}, column {}.",
+            self.line, self.column
+        ))?
+    }
+
+    pub fn tokenize_all(&mut self) -> Result<Vec<Token<'a, T>>, Box<dyn std::error::Error>> {
+        let mut tokens = Vec::new();
+        while let Some(token) = self.next()? {
+            tokens.push(token);
+        }
+
+        Ok(tokens)
+    }
+}