Method MapExprFromProto

common/ast/expr_proto.cc:421–452

  }

  absl::Status MapExprFromProto(const ExprProto& proto,
                                const ExprProto::CreateStruct& map_proto,
                                Expr& expr) {
    expr.Clear();
    expr.set_id(proto.id());
    auto& map_expr = expr.mutable_map_expr();
    map_expr.mutable_entries().reserve(
        static_cast<size_t>(map_proto.entries().size()));
    for (const auto& entry_proto : map_proto.entries()) {
      switch (entry_proto.key_kind_case()) {
        case StructExprProto::Entry::KEY_KIND_NOT_SET:
          ABSL_FALLTHROUGH_INTENDED;
        case StructExprProto::Entry::kMapKey:
          break;
        case StructExprProto::Entry::kFieldKey:
          return absl::InvalidArgumentError("encountered struct field in map");
        default:
          return absl::InvalidArgumentError(absl::StrCat(
              "unexpected map entry kind: ", entry_proto.key_kind_case()));
      }
      auto& entry_expr = map_expr.add_entries();
      entry_expr.set_id(entry_proto.id());
      if (entry_proto.has_map_key()) {
        Push(entry_proto.map_key(), entry_expr.mutable_key());
      }
      if (entry_proto.has_value()) {
        Push(entry_proto.value(), entry_expr.mutable_value());
      }
      entry_expr.set_optional(entry_proto.optional_entry());
    }
    return absl::OkStatus();
  }

  absl::Status ComprehensionExprFromProto(
      const ExprProto& proto,