Make shorthand list inspectable

src/syntax/ast.rs

@@ -424,35 +424,41 @@ node! {
 }
 
 impl Shorthand {
+    /// A list of all shorthands.
+    pub const LIST: &[(&'static str, char)] = &[
+        ("~", '\u{00A0}'),
+        ("--", '\u{2013}'),
+        ("---", '\u{2014}'),
+        ("-?", '\u{00AD}'),
+        ("...", '…'),
+        ("*", '∗'),
+        ("!=", '≠'),
+        ("<<", '≪'),
+        ("<<<", '⋘'),
+        (">>", '≫'),
+        (">>>", '⋙'),
+        ("<=", '≤'),
+        (">=", '≥'),
+        ("<-", '←'),
+        ("->", '→'),
+        ("=>", '⇒'),
+        ("|->", '↦'),
+        ("|=>", '⤇'),
+        ("<->", '↔'),
+        ("<=>", '⇔'),
+        (":=", '≔'),
+        ("[|", '⟦'),
+        ("|]", '⟧'),
+        ("||", '‖'),
+    ];
+
     /// Get the shorthanded character.
     pub fn get(&self) -> char {
-        match self.0.text().as_str() {
+        let text = self.0.text().as_str();
-            "~" => '\u{00A0}',
+        Self::LIST
-            "--" => '\u{2013}',
+            .iter()
-            "---" => '\u{2014}',
+            .find(|&&(s, _)| s == text)
-            "-?" => '\u{00AD}',
+            .map_or_else(char::default, |&(_, c)| c)
-            "..." => '…',
-            "*" => '∗',
-            "!=" => '≠',
-            "<<" => '≪',
-            "<<<" => '⋘',
-            ">>" => '≫',
-            ">>>" => '⋙',
-            "<=" => '≤',
-            ">=" => '≥',
-            "<-" => '←',
-            "->" => '→',
-            "=>" => '⇒',
-            "|->" => '↦',
-            "|=>" => '⤇',
-            "<->" => '↔',
-            "<=>" => '⇔',
-            ":=" => '≔',
-            "[|" => '⟦',
-            "|]" => '⟧',
-            "||" => '‖',
-            _ => char::default(),
-        }
     }
 }