Cashtag support.

GitOrigin-RevId: c1e55687ce0c977635b77b48940bc6cc0735e02e

td/generate/scheme/td_api.tl

@@ -924,6 +924,9 @@ textEntityTypeMention = TextEntityType;
 //@description A hashtag text, beginning with "#"
 textEntityTypeHashtag = TextEntityType;
 
+//@description A cashtag text, beginning with "$" and consisting of capital english letters (i.e. "$USD")
+textEntityTypeCashtag = TextEntityType;
+
 //@description A bot command, beginning with "/". This shouldn't be highlighted if there are no bots in the chat
 textEntityTypeBotCommand = TextEntityType;
 

td/telegram/MessageEntity.cpp

@@ -64,6 +64,9 @@ StringBuilder &operator<<(StringBuilder &string_builder, const MessageEntity &me
     case MessageEntity::Type::MentionName:
       string_builder << "MentionName";
       break;
+    case MessageEntity::Type::Cashtag:
+      string_builder << "Cashtag";
+      break;
     default:
       UNREACHABLE();
       string_builder << "Impossible";
@@ -107,6 +110,8 @@ tl_object_ptr<td_api::TextEntityType> MessageEntity::get_text_entity_type_object
       return make_tl_object<td_api::textEntityTypeTextUrl>(argument);
     case MessageEntity::Type::MentionName:
       return make_tl_object<td_api::textEntityTypeMentionName>(user_id.get());
+    case MessageEntity::Type::Cashtag:
+      return make_tl_object<td_api::textEntityTypeCashtag>();
     default:
       UNREACHABLE();
       return nullptr;
@@ -1057,6 +1062,12 @@ vector<MessageEntity> find_entities(Slice text, bool skip_bot_commands, bool onl
       entities.emplace_back(MessageEntity::Type::Hashtag, narrow_cast<int32>(hashtag.begin() - text.begin()),
                             narrow_cast<int32>(hashtag.size()));
     }
+
+    auto cashtags = find_cashtags(text);
+    for (auto &cashtag : cashtags) {
+      entities.emplace_back(MessageEntity::Type::Cashtag, narrow_cast<int32>(cashtag.begin() - text.begin()),
+                            narrow_cast<int32>(cashtag.size()));
+    }
   }
 
   auto urls = find_urls(text);
@@ -1173,6 +1184,8 @@ string get_first_url(Slice text, const vector<MessageEntity> &entities) {
         return entity.argument;
       case MessageEntity::Type::MentionName:
         break;
+      case MessageEntity::Type::Cashtag:
+        break;
       default:
         UNREACHABLE();
     }
@@ -1591,6 +1604,7 @@ vector<tl_object_ptr<telegram_api::MessageEntity>> get_input_message_entities(co
       case MessageEntity::Type::BotCommand:
       case MessageEntity::Type::Url:
       case MessageEntity::Type::EmailAddress:
+      case MessageEntity::Type::Cashtag:
         continue;
       case MessageEntity::Type::Bold:
         result.push_back(make_tl_object<telegram_api::messageEntityBold>(entity.offset, entity.length));
@@ -1637,6 +1651,8 @@ vector<tl_object_ptr<secret_api::MessageEntity>> get_input_secret_message_entiti
       case MessageEntity::Type::Hashtag:
         result.push_back(make_tl_object<secret_api::messageEntityHashtag>(entity.offset, entity.length));
         break;
+      case MessageEntity::Type::Cashtag:
+        break;
       case MessageEntity::Type::BotCommand:
         break;
       case MessageEntity::Type::Url:
@@ -1688,6 +1704,7 @@ Result<vector<MessageEntity>> get_message_entities(const ContactsManager *contac
       case td_api::textEntityTypeBotCommand::ID:
       case td_api::textEntityTypeUrl::ID:
       case td_api::textEntityTypeEmailAddress::ID:
+      case td_api::textEntityTypeCashtag::ID:
         break;
       case td_api::textEntityTypeBold::ID:
         entities.emplace_back(MessageEntity::Type::Bold, entity->offset_, entity->length_);
@@ -1758,9 +1775,11 @@ vector<MessageEntity> get_message_entities(const ContactsManager *contacts_manag
         entities.emplace_back(MessageEntity::Type::Hashtag, entity_hashtag->offset_, entity_hashtag->length_);
         break;
       }
-      case telegram_api::messageEntityCashtag::ID:
+      case telegram_api::messageEntityCashtag::ID: {
-        // skip for now
+        auto entity_cashtag = static_cast<const telegram_api::messageEntityCashtag *>(entity.get());
+        entities.emplace_back(MessageEntity::Type::Cashtag, entity_cashtag->offset_, entity_cashtag->length_);
         break;
+      }
       case telegram_api::messageEntityPhone::ID:
         // skip for now
         break;
@@ -1971,7 +1990,7 @@ Status fix_formatted_text(string &text, vector<MessageEntity> &entities, bool al
           in_entity = false;
 
           if (has_non_space_in_entity) {
-            // TODO check entities for validness, for example, that mention, hashtag and URLs are valid
+            // TODO check entities for validness, for example, that mentions, hashtags, cashtags and URLs are valid
             if (current_entity != left_entities) {
               entities[left_entities] = std::move(entities[current_entity]);
             }

td/telegram/MessageEntity.h

@@ -42,7 +42,8 @@ class MessageEntity {
     Pre,
     PreCode,
     TextUrl,
-    MentionName
+    MentionName,
+    Cashtag
   };
   Type type;
   int32 offset;