Add type templates Optional<T> and NotOptional<T>

include/tgbot/Optional.h

@@ -0,0 +1,16 @@
+#ifndef TGBOT_OPTIONAL_H
+#define TGBOT_OPTIONAL_H
+
+#include <boost/optional.hpp>
+
+namespace TgBot {
+
+template<typename T>
+  using Optional = boost::optional<T>;
+
+template<typename T>
+  using NotOptional = T;
+
+}
+
+#endif //TGBOT_OPTIONAL_H

include/tgbot/types/LinkPreviewOptions.h

@@ -1,9 +1,10 @@
 #ifndef TGBOT_LINKPREVIEWOPTIONS_H
 #define TGBOT_LINKPREVIEWOPTIONS_H
 
+#include "tgbot/Optional.h"
+
 #include <memory>
 #include <string>
-#include <boost/optional.hpp>
 
 namespace TgBot {
 
@@ -20,29 +21,29 @@ class LinkPreviewOptions {
     /**
      * @brief Optional. True, if the link preview is disabled
      */
-    boost::optional<bool> isDisabled;
+    Optional<bool> isDisabled;
 
     /**
      * @brief Optional. URL to use for the link preview.
      *
      * If empty, then the first URL found in the message text will be used
      */
-    boost::optional<std::string> url;
+    Optional<std::string> url;
 
     /**
      * @brief Optional. True, if the media in the link preview is supposed to be shrunk; ignored if the URL isn't explicitly specified or media size change isn't supported for the preview
      */
-    boost::optional<bool> preferSmallMedia;
+    Optional<bool> preferSmallMedia;
 
     /**
      * @brief Optional. True, if the media in the link preview is supposed to be enlarged; ignored if the URL isn't explicitly specified or media size change isn't supported for the preview
      */
-    boost::optional<bool> preferLargeMedia;
+    Optional<bool> preferLargeMedia;
 
     /**
      * @brief Optional. True, if the link preview must be shown above the message text; otherwise, the link preview will be shown below the message text
      */
-    boost::optional<bool> showAboveText;
+    Optional<bool> showAboveText;
 };
 }
 

include/tgbot/types/ReplyParameters.h

@@ -2,12 +2,12 @@
 #define TGBOT_REPLYPARAMETERS_H
 
 #include "tgbot/types/MessageEntity.h"
+#include "tgbot/Optional.h"
 
 #include <cstdint>
 #include <memory>
 #include <string>
 #include <vector>
-#include <boost/optional.hpp>
 
 namespace TgBot {
 
@@ -31,42 +31,42 @@ class ReplyParameters {
      *
      * Not supported for messages sent on behalf of a business account.
      */
-    boost::optional<std::int64_t> chatId;
+    Optional<std::int64_t> chatId;
 
     /**
      * @brief Optional. Pass True if the message should be sent even if the specified message to be replied to is not found.
      *
      * Always False for replies in another chat or forum topic.
      * Always True for messages sent on behalf of a business account.
      */
-    boost::optional<bool> allowSendingWithoutReply;
+    Optional<bool> allowSendingWithoutReply;
 
     /**
      * @brief Optional. Quoted part of the message to be replied to; 0-1024 characters after entities parsing.
      *
      * The quote must be an exact substring of the message to be replied to, including bold, italic, underline, strikethrough, spoiler, and customEmoji entities.
      * The message will fail to send if the quote isn't found in the original message.
      */
-    boost::optional<std::string> quote;
+    Optional<std::string> quote;
 
     /**
      * @brief Optional. Mode for parsing entities in the quote.
      *
      * See [formatting options](https://core.telegram.org/bots/api#formatting-options) for more details.
      */
-    boost::optional<std::string> quoteParseMode;
+    Optional<std::string> quoteParseMode;
 
     /**
      * @brief Optional. A JSON-serialized list of special entities that appear in the quote.
      *
      * It can be specified instead of quoteParseMode.
      */
-    boost::optional<std::vector<MessageEntity::Ptr>> quoteEntities;
+    Optional<std::vector<MessageEntity::Ptr>> quoteEntities;
 
     /**
      * @brief Optional. Position of the quote in the original message in UTF-16 code units
      */
-    boost::optional<std::int32_t> quotePosition;
+    Optional<std::int32_t> quotePosition;
 };
 }