Just move all the one-liner functions straight into the parser.

lel_parser.rl

@@ -10,16 +10,20 @@ namespace lel {
 
   action token {tk = input.substr(start - begin, fpc - start); }
 
-  action col { col(); }
-  action ltab { ltab(); }
-  action valign { valign(fc); }
+  action col { }
+  action ltab { cur.row = rows; }
+  action valign { cur.bottom = fc == '.'; }
   action id { id(input.substr(start - begin, fpc - start)); }
-  action row { row(); }
-  action align { align(fc); }
-  action setwidth { setwidth(std::stoi(tk)); }
-  action setheight { setheight(std::stoi(tk)); }
-  action expand { expand(); }
-  action center { center(); }
+  action row {
+    rows++;
+    columns = std::max(columns, cur.col);
+    cur.col = 0;
+  }
+  action align { cur.right = fc == '>'; }
+  action setwidth {cur.max_w = std::stoi(tk); }
+  action setheight { cur.max_h = std::stoi(tk); }
+  action expand { cur.expand = true; }
+  action center { cur.center = true; }
 
   col = "|" $col;
   ltab = "[" $ltab;