Modularized bracket style

crates/codegen/src/fmt/mod.rs

@@ -46,6 +46,11 @@ impl MistCodegen {
         self.add(&line);
     }
 
+    pub fn start_indent(&mut self) {
+        self.addln("");
+        self.add_indented("");
+    }
+
     pub fn start_bracket(&mut self) {
         self.addln("");
         self.add_indentedln("{");

crates/codegen/src/fmt/top_level.rs

@@ -78,8 +78,7 @@ impl GenMist for FunctionDecl {
         }
 
         if let Some(body) = &self.body {
-            cg.addln("");
-            cg.add_indented("");
+            cg.start_indent();
             body.gen_mist(ctx, cg);
             cg.addln("");
         } else {