Rules are now kept sorted

Changed the rules from a HashMap to a Vec

src/settings/mod.rs

@@ -125,7 +125,7 @@ pub struct Settings {
     /// a regex to be matched while the second represents the change
     /// to be made to the input data.
     #[serde(default)]
-    pub rules: HashMap<Regex, String>,
+    pub rules: Vec<(Regex, String)>,
 }
 
 /// Representation inside the crate of LangEvolve’s settings.
@@ -139,8 +139,8 @@ impl Settings {
     /// let content_yaml = r#"---
     /// version: "1"
     /// categories: {}
-    /// rules: {}"#;
-    /// let content_json = r#"{"version":"1","categories":{},"rules":{}}"#;
+    /// rules: []"#;
+    /// let content_json = r#"{"version":"1","categories":{},"rules":[]}"#;
     /// assert_eq!(content_yaml, serde_yaml::to_string(&s).unwrap());
     /// assert_eq!(content_json, serde_json::to_string(&s).unwrap());
     /// ```
@@ -150,7 +150,7 @@ impl Settings {
         Self {
             version: Self::get_ruleset_version(),
             categories: HashMap::new(),
-            rules: HashMap::new(),
+            rules: Vec::new(),
         }
     }
 
@@ -285,10 +285,7 @@ impl Settings {
     }
 
     fn update_rules(&self) -> Vec<(Regex, String)> {
-        let mut rules: Vec<(Regex, String)> = Vec::new();
-        for (from, to) in &self.rules {
-            rules.push((from.clone(), to.to_string()));
-        }
+        let mut rules = self.rules.clone();
 
         for (category, content) in &self.categories {
             let mut temp_rules: Vec<(Regex, String)> = Vec::new();
@@ -368,7 +365,7 @@ impl FromStr for Settings {
     ///
     /// ```
     /// # use std::str::FromStr;
-    /// let s = r#"{"version":"1","categories":{},"rules":{}}"#;
+    /// let s = r#"{"version":"1","categories":{},"rules":[]}"#;
     /// let settings = lang_evolve_core::settings::Settings::from_str(s).unwrap();
     /// ```
     fn from_str(s: &str) -> Result<Self, Self::Err> {
@@ -410,7 +407,7 @@ fn write_settings() {
     let settings = r#"---
 version: "1"
 categories: {}
-rules: {}"#;
+rules: []"#;
     utils::write_file(&path, &serde_yaml::to_string(&s).unwrap()).unwrap();
     assert_eq!(settings, utils::read_file(&path).unwrap());
 }