mark callback procs as {.gcsafe.} to avoid exception when threads is enabled, fixes #45

Author: ba0f3

examples/echo_bot.nim

@@ -1,4 +1,4 @@
-import ../telebot, asyncdispatch, logging, options, sam
+import ../telebot, asyncdispatch, logging, options
 from strutils import strip
 
 var L = newConsoleLogger(fmtStr="$levelname, [$time] ")

telebot/helpers.nim

@@ -1,4 +1,4 @@
-import types, options
+import types
 
 # -------------
 # InputMessageContent

telebot/inputmedia.nim

@@ -1,4 +1,4 @@
-import types, strutils, utils, options, macros
+import types, strutils, utils, options
 
 proc `$`*(m: InputMedia): string =
     result = ""

telebot/types.nim

@@ -3,10 +3,10 @@ import asyncdispatch, options, tables, httpclient
 type
   TelegramObject* = object of RootObj
 
-  UpdateCallback* = proc(bot: Telebot, update: Update): Future[void]
-  CommandCallback* = proc(bot: Telebot, command: Command): Future[void]
-  CatchallCommandCallback* = proc(bot: Telebot, command: CatchallCommand): Future[void]
-  InlineQueryCallback* = proc(bot: Telebot, inlineQuery: InlineQuery): Future[void]
+  UpdateCallback* = proc(bot: Telebot, update: Update): Future[void] {.gcsafe.}
+  CommandCallback* = proc(bot: Telebot, command: Command): Future[void] {.gcsafe.}
+  CatchallCommandCallback* = proc(bot: Telebot, command: CatchallCommand): Future[void] {.gcsafe.}
+  InlineQueryCallback* = proc(bot: Telebot, inlineQuery: InlineQuery): Future[void] {.gcsafe.}
 
   TeleBot* = ref object of TelegramObject
     token*: string

telebot/utils.nim

@@ -73,7 +73,7 @@ proc formatName*(s: string): string =
 proc unmarshal*(n: JsonNode, T: typedesc): T =
   when result is object:
     for name, value in result.fieldPairs:
-      const jsonKey = formatName(name)
+      let jsonKey = formatName(name)
       when value.type is Option:
         if n.hasKey(jsonKey):
           toOption(value, n[jsonKey])

telebot/webhook.nim

@@ -63,7 +63,7 @@ proc startWebhook*(b: Telebot, secret, url: string, port=Port(8080)) =
 
   waitFor b.setWebhook(url)
 
-  proc callback(req: Request) {.async, gcsafe.} =
+  proc callback(req: Request) {.async.} =
     d("GET: ", req.body)
     if req.url.path == "/" & secret:
       try: