Support reified argument types

src/main/kotlin/net/axay/kspigot/commands/ArgumentTypeUtils.kt

@@ -0,0 +1,17 @@
+package net.axay.kspigot.commands
+
+import com.mojang.brigadier.arguments.*
+
+object ArgumentTypeUtils {
+    @Suppress("UNCHECKED_CAST")
+    inline fun <reified T> fromReifiedType() = when (T::class) {
+        Boolean::class -> BoolArgumentType.bool()
+        Int::class -> IntegerArgumentType.integer()
+        Long::class -> LongArgumentType.longArg()
+        Float::class -> FloatArgumentType.floatArg()
+        Double::class -> DoubleArgumentType.doubleArg()
+        String::class -> StringArgumentType.string()
+
+        else -> throw IllegalArgumentException("The specified type '${T::class.qualifiedName}' does not have corresponding default argument type")
+    } as ArgumentType<T>
+}

src/main/kotlin/net/axay/kspigot/commands/BrigardierWrapper.kt

@@ -64,6 +64,17 @@ inline fun <T> ArgumentBuilder<CommandListenerWrapper, *>.argument(
 ): RequiredArgumentBuilder<CommandListenerWrapper, T> =
     RequiredArgumentBuilder.argument<CommandListenerWrapper, T>(name, type).apply(builder).also { then(it) }
 
+/**
+ * Add an argument.
+ *
+ * @param name the name of the argument
+ */
+inline fun <reified T> ArgumentBuilder<CommandListenerWrapper, *>.argument(
+    name: String,
+    builder: RequiredArgumentBuilder<CommandListenerWrapper, T>.() -> Unit,
+): RequiredArgumentBuilder<CommandListenerWrapper, T> =
+    RequiredArgumentBuilder.argument<CommandListenerWrapper, T>(name, ArgumentTypeUtils.fromReifiedType<T>()).apply(builder).also { then(it) }
+
 private val argumentCoroutineScope = CoroutineScope(SupervisorJob() + Dispatchers.IO)
 
 /**