std::string t_hack_generator::declare_field()

in thrift/compiler/generate/t_hack_generator.cc [6866:6928]

• 63 lines of code
• 26 McCabe index (conditional complexity)

std::string t_hack_generator::declare_field(
    const t_field* tfield, bool init, bool obj, bool /*thrift*/) {
  std::string result = "$" + tfield->name();
  if (init) {
    const t_type* type = tfield->get_type()->get_true_type();
    if (const auto* tbase_type = dynamic_cast<const t_base_type*>(type)) {
      switch (tbase_type->get_base()) {
        case t_base_type::TYPE_VOID:
          break;
        case t_base_type::TYPE_STRING:
        case t_base_type::TYPE_BINARY:
          result += " = ''";
          break;
        case t_base_type::TYPE_BOOL:
          result += " = false";
          break;
        case t_base_type::TYPE_BYTE:
        case t_base_type::TYPE_I16:
        case t_base_type::TYPE_I32:
        case t_base_type::TYPE_I64:
          result += " = 0";
          break;
        case t_base_type::TYPE_DOUBLE:
        case t_base_type::TYPE_FLOAT:
          result += " = 0.0";
          break;
        default:
          throw std::runtime_error(
              "compiler error: no Hack initializer for base type " +
              t_base_type::t_base_name(tbase_type->get_base()));
      }
    } else if (type->is_enum()) {
      result += " = null";
    } else if (type->is_map()) {
      if (arrays_ || no_use_hack_collections_) {
        result += " = dict[]";
      } else {
        result += " = Map {}";
      }
    } else if (type->is_list()) {
      if (arrays_ || no_use_hack_collections_) {
        result += " = vec[]";
      } else {
        result += " = Vector {}";
      }
    } else if (type->is_set()) {
      if (arrays_) {
        result += " = keyset[]";
      } else if (arraysets_) {
        result += " = dict[]";
      } else {
        result += " = Set {}";
      }
    } else if (type->is_struct() || type->is_xception()) {
      if (obj) {
        result += " = " + hack_name(type) + "::withDefaultValues()";
      } else {
        result += " = null";
      }
    }
  }
  return result + ";";
}