clean: Remove statics and use Arcs

src/levenshtein.rs

@@ -0,0 +1,27 @@
+use levenshtein_automata::{LevenshteinAutomatonBuilder, DFA};
+
+pub struct LevBuilder {
+    automatons: [LevenshteinAutomatonBuilder; 3],
+}
+
+impl LevBuilder {
+    pub fn new() -> Self {
+        Self {
+            automatons: [
+                LevenshteinAutomatonBuilder::new(0, false),
+                LevenshteinAutomatonBuilder::new(1, false),
+                LevenshteinAutomatonBuilder::new(2, false),
+            ],
+        }
+    }
+
+    pub fn build_automaton(&self, query: &str) -> DFA {
+        if query.len() <= 4 {
+            self.automatons[0].build_dfa(query)
+        } else if query.len() <= 8 {
+            self.automatons[1].build_dfa(query)
+        } else {
+            self.automatons[2].build_dfa(query)
+        }
+    }
+}

src/lib.rs

@@ -1,12 +1,16 @@
 #[macro_use] extern crate serde_derive;
 extern crate bincode;
 extern crate fst;
+extern crate levenshtein_automata;
 extern crate serde;
 
 pub mod map;
+mod levenshtein;
 
 pub use self::map::{Map, MapBuilder, Values};
 pub use self::map::{
     OpBuilder, IndexedValues,
     OpWithStateBuilder, IndexedValuesWithState,
 };
+
+pub use self::levenshtein::LevBuilder;