add symbolName() for macros

src/kiss/Kiss.hx

@@ -58,6 +58,7 @@ class Kiss {
                 "zip" => Symbol("Prelude.zip"),
                 "pairs" => Symbol("Prelude.pairs"), // TODO test pairs
                 "memoize" => Symbol("Prelude.memoize"), // TODO test memoize
+                "symbolName" => Symbol("Prelude.symbolName"),
                 "map" => Symbol("Lambda.map"),
                 "filter" => Symbol("Lambda.filter"), // TODO use truthy as the default filter function
                 "has" => Symbol("Lambda.has"),

src/kiss/Prelude.hx

@@ -277,6 +277,14 @@ class Prelude {
         return v;
     }
 
+    // ReaderExp helpers for macros:
+    public static function symbolName(s:ReaderExp):ReaderExpDef {
+        return switch (s.def) {
+            case Symbol(name): StrExp(name);
+            default: throw 'expected $s to be a plain symbol';
+        };
+    }
+
     #if sys
     private static var kissProcess:Process = null;
     #end