static Map<S, Class> parsePrimitiveType_map = litmap(
  "int" := int.class,
  "char" := char.class,
  "byte" := byte.class,
  "short" := short.class,
  "long" := long.class,
  "float" := float.class,
  "double" := double.class,
  "bool" := bool.class);

static Class parsePrimitiveType(S s) {
  ret parsePrimitiveType_map.get(s);
}

Began life as a copy of #1029184