Toml Parse Error with seemingly valid .toml file

[DersWasTaken]

Hello! Im encountering a strange error, and after about an hour of attempting to fix it, have gotten nowhere. The code im running is below aswell as the entire error message. This issue also happens with decodeWithDefaults.

        val tomlMapper = tomlMapper {}

        val tomlFile = File(Bukkit.getServer().pluginManager.getPlugin("DawnPlugin").dataFolder, "config.toml")
        if(!tomlFile.exists()) {
            tomlFile.createNewFile()
        }
        val tomlFilePath = tomlFile.absolutePath

        tomlMapper.decode<Config>(tomlFilePath)
        println(config)
        
        //CONFIG CLASS
        
        data class Config(
          val messages: Messages,
         ) {
            data class Messages(val joinMessage: String, val leaveMessage: String, val chatFormat: String)
         }

        val defaultConfig = Config(
           messages = Config.Messages(
             joinMessage = "<green>[+] %playerName%",
            leaveMessage = "<red>[-] %playerName%",
            chatFormat = "%displayName% : %message%"
           )
         )

using this produces the error message below:

cc.ekblad.toml.model.TomlException$ParseError: toml parse error, on line 1: token recognition error at: ':'
	at cc.ekblad.toml.serialization.TomlErrorListener.syntaxError(TomlErrorListener.kt:21) ~[?:?]
	at org.antlr.v4.runtime.ProxyErrorListener.syntaxError(ProxyErrorListener.java:41) ~[?:?]
	at org.antlr.v4.runtime.Lexer.notifyListeners(Lexer.java:364) ~[?:?]
	at org.antlr.v4.runtime.Lexer.nextToken(Lexer.java:144) ~[?:?]
	at org.antlr.v4.runtime.BufferedTokenStream.fetch(BufferedTokenStream.java:169) ~[?:?]
	at org.antlr.v4.runtime.BufferedTokenStream.sync(BufferedTokenStream.java:152) ~[?:?]
	at org.antlr.v4.runtime.BufferedTokenStream.consume(BufferedTokenStream.java:136) ~[?:?]
	at org.antlr.v4.runtime.atn.ParserATNSimulator.execATN(ParserATNSimulator.java:537) ~[?:?]
	at org.antlr.v4.runtime.atn.ParserATNSimulator.adaptivePredict(ParserATNSimulator.java:393) ~[?:?]
	at cc.ekblad.toml.parser.TomlParser.key(TomlParser.java:378) ~[?:?]
	at cc.ekblad.toml.parser.TomlParser.key_value(TomlParser.java:333) ~[?:?]
	at cc.ekblad.toml.parser.TomlParser.expression(TomlParser.java:221) ~[?:?]
	at cc.ekblad.toml.parser.TomlParser.document(TomlParser.java:143) ~[?:?]
	at cc.ekblad.toml.serialization.TomlDeserializerKt.from(TomlDeserializer.kt:49) ~[?:?]
	at cc.ekblad.toml.serialization.TomlDeserializerKt.from(TomlDeserializer.kt:20) ~[?:?]
	at me.ders.Main.onEnable(Main.kt:59) ~[?:?]
	at org.bukkit.plugin.java.JavaPlugin.setEnabled(JavaPlugin.java:321) ~[spigot-1.8.9.jar:git-Spigot-21fe707-741a1bd]
	at org.bukkit.plugin.java.JavaPluginLoader.enablePlugin(JavaPluginLoader.java:340) [spigot-1.8.9.jar:git-Spigot-21fe707-741a1bd]
	at org.bukkit.plugin.SimplePluginManager.enablePlugin(SimplePluginManager.java:405) [spigot-1.8.9.jar:git-Spigot-21fe707-741a1bd]
	at org.bukkit.craftbukkit.v1_8_R3.CraftServer.loadPlugin(CraftServer.java:357) [spigot-1.8.9.jar:git-Spigot-21fe707-741a1bd]
	at org.bukkit.craftbukkit.v1_8_R3.CraftServer.enablePlugins(CraftServer.java:317) [spigot-1.8.9.jar:git-Spigot-21fe707-741a1bd]
	at net.minecraft.server.v1_8_R3.MinecraftServer.s(MinecraftServer.java:414) [spigot-1.8.9.jar:git-Spigot-21fe707-741a1bd]
	at net.minecraft.server.v1_8_R3.MinecraftServer.k(MinecraftServer.java:378) [spigot-1.8.9.jar:git-Spigot-21fe707-741a1bd]
	at net.minecraft.server.v1_8_R3.MinecraftServer.a(MinecraftServer.java:333) [spigot-1.8.9.jar:git-Spigot-21fe707-741a1bd]
	at net.minecraft.server.v1_8_R3.DedicatedServer.init(DedicatedServer.java:263) [spigot-1.8.9.jar:git-Spigot-21fe707-741a1bd]
	at net.minecraft.server.v1_8_R3.MinecraftServer.run(MinecraftServer.java:525) [spigot-1.8.9.jar:git-Spigot-21fe707-741a1bd]
	at java.lang.Thread.run(Thread.java:750) [?:1.8.0_352]
Caused by: org.antlr.v4.runtime.LexerNoViableAltException
	at org.antlr.v4.runtime.atn.LexerATNSimulator.failOrAccept(LexerATNSimulator.java:309) ~[?:?]
	at org.antlr.v4.runtime.atn.LexerATNSimulator.execATN(LexerATNSimulator.java:230) ~[?:?]
	at org.antlr.v4.runtime.atn.LexerATNSimulator.match(LexerATNSimulator.java:114) ~[?:?]
	at org.antlr.v4.runtime.Lexer.nextToken(Lexer.java:141) ~[?:?]
	... 23 more

[messages]
joinMessage = "<green>[+] %playerName%"
leaveMessage = "<red>[-] %playerName%"
chatFormat = "%displayName% : %message%"

[DersWasTaken]

Issue was also tested with example code provided by the github, same error happens.

[valderman]

That file does indeed look like it should be valid. I'll add it as a test case to the remove-antlr-dependency branch, which rewrites the parser entirely. I guess this is as good a reason as any to go ahead and release it.

[valderman]

This is fixed in version 1.2.0, which was just released.