ffi: new native function format

evaluator/src/main/kotlin/gay/pizza/pork/evaluator/FunctionContext.kt

@@ -11,7 +11,7 @@ class FunctionContext(val compilationUnitContext: CompilationUnitContext, val no
     val native = node.native!!
     val nativeFunctionProvider =
       compilationUnitContext.evaluator.nativeFunctionProvider(native.form.id)
-    nativeFunctionProvider.provideNativeFunction(native.definition.text, node.arguments)
+    nativeFunctionProvider.provideNativeFunction(native.definitions.map { it.text }, node.arguments)
   }
 
   private val nativeCached by lazy { resolveMaybeNative() }

evaluator/src/main/kotlin/gay/pizza/pork/evaluator/InternalNativeProvider.kt

@@ -10,7 +10,8 @@ class InternalNativeProvider(val quiet: Boolean = false) : NativeProvider {
     "listInitWith" to CallableFunction(::listInitWith)
   )
 
-  override fun provideNativeFunction(definition: String, arguments: List<ArgumentSpec>): CallableFunction {
+  override fun provideNativeFunction(definitions: List<String>, arguments: List<ArgumentSpec>): CallableFunction {
+    val definition = definitions[0]
     return functions[definition] ?: throw RuntimeException("Unknown Internal Function: $definition")
   }
 

evaluator/src/main/kotlin/gay/pizza/pork/evaluator/NativeProvider.kt

@@ -3,5 +3,5 @@ package gay.pizza.pork.evaluator
 import gay.pizza.pork.ast.ArgumentSpec
 
 interface NativeProvider {
-  fun provideNativeFunction(definition: String, arguments: List<ArgumentSpec>): CallableFunction
+  fun provideNativeFunction(definitions: List<String>, arguments: List<ArgumentSpec>): CallableFunction
 }