String evaluateJsonTemplate()

in lib/generate_localized.dart [367:416]
48 lines of code
9 McCabe index (conditional complexity)

String evaluateJsonTemplate(dynamic input, List<dynamic> args) {
  if (input == null) return null;
  if (input is String) return input;
  if (input is int) {
    return "\${args[input]}";
  }

  var template = input as List<dynamic>;
  var messageName = template.first;
  if (messageName == "Intl.plural") {
     var howMany = args[template[1] as int] as num;
     return evaluateJsonTemplate(
         Intl.pluralLogic(
             howMany,
             zero: template[2],
             one: template[3],
             two: template[4],
             few: template[5],
             many: template[6],
             other: template[7]),
         args);
   }
   if (messageName == "Intl.gender") {
     var gender = args[template[1] as int] as String;
     return evaluateJsonTemplate(
         Intl.genderLogic(
             gender,
             female: template[2],
             male: template[3],
             other: template[4]),
         args);
   }
   if (messageName == "Intl.select") {
     var select = args[template[1] as int];
     var choices = template[2] as Map<Object, Object>;
     return evaluateJsonTemplate(Intl.selectLogic(select, choices), args);
   }

   // If we get this far, then we are a basic interpolation, just strings and
   // ints.
   var output = new StringBuffer();
   for (var entry in template) {
     if (entry is int) {
       output.write("\${args[entry]}");
     } else {
       output.write("\$entry");
     }
   }
   return output.toString();
  }