diff --git a/src/main/kotlin/ru/dbotthepony/mc/otm/Ext.kt b/src/main/kotlin/ru/dbotthepony/mc/otm/Ext.kt
index 4e8ea0863..e71a7cbed 100644
--- a/src/main/kotlin/ru/dbotthepony/mc/otm/Ext.kt
+++ b/src/main/kotlin/ru/dbotthepony/mc/otm/Ext.kt
@@ -111,6 +111,26 @@ operator fun IItemHandler.get(index: Int): ItemStack = getStackInSlot(index)
 
 operator fun JsonObject.set(s: String, value: JsonElement) = add(s, value)
 
+inline fun <R, reified T : Tag> CompoundTag.map(s: String, consumer: (T) -> R): R? {
+	val tag = get(s)
+
+	if (tag is T) {
+		return consumer(tag)
+	}
+
+	return null
+}
+
+inline fun <T> CompoundTag.ifCompound(s: String, consumer: (CompoundTag) -> T): T? {
+	val tag = get(s)
+
+	if (tag is CompoundTag) {
+		return consumer(tag)
+	}
+
+	return null
+}
+
 inline fun CompoundTag.ifHas(s: String, consumer: (Tag) -> Unit) {
 	val tag = get(s)