1 files changed, 41 insertions, 0 deletions
diff --git a/src/main/kotlin/com/romangraef/jrconfig/TransformerConfigVariable.kt b/src/main/kotlin/com/romangraef/jrconfig/TransformerConfigVariable.kt
new file mode 100644
index 0000000..ae38409
--- /dev/null
+++ b/src/main/kotlin/com/romangraef/jrconfig/TransformerConfigVariable.kt
@@ -0,0 +1,41 @@
+package com.romangraef.jrconfig
+
+import java.util.function.Function
+
+abstract class TransformerConfigVariable<T>(private val provider: ConfigProvider, private val point: String) :
+    ConfigVariable<T> {
+    protected abstract fun transform(value: String): T
+    protected abstract fun serialize(data: T): String
+
+    override fun get(): T {
+        return transform(provider.provideData(point) ?: throw ConfigMissingException(point))
+    }
+
+
+    override fun set(value: T) =
+        provider.setData(point, serialize(value))
+
+
+    companion object {
+        /**
+         * Quick and dirty. Please consider using a subclass.
+         */
+        fun <T> getVariable(
+            provider: ConfigProvider,
+            point: String,
+            transform: Function<String, T>,
+            serialize: Function<T, String>
+        ): TransformerConfigVariable<T> {
+            return object : TransformerConfigVariable<T>(provider, point) {
+                override fun transform(value: String): T {
+                    return transform.apply(value)
+                }
+
+                override fun serialize(data: T): String {
+                    return serialize.apply(data)
+                }
+            }
+        }
+    }
+
+}
+\ No newline at end of file