From 1ae50814d3c7fc75fe02f7ce53497cb17f8114ff Mon Sep 17 00:00:00 2001
From: Tom Willemse
Date: Wed, 23 Mar 2022 17:00:22 -0700
Subject: Chapter 25.1

---
 clox/src/object.h | 9 +++++++++
 1 file changed, 9 insertions(+)

(limited to 'clox/src/object.h')

diff --git a/clox/src/object.h b/clox/src/object.h
index b5942d6..54faf5b 100644
--- a/clox/src/object.h
+++ b/clox/src/object.h
@@ -7,16 +7,19 @@
 
 #define OBJ_TYPE(value) (AS_OBJ(value)->type)
 
+#define IS_CLOSURE(value) isObjType(value, OBJ_CLOSURE)
 #define IS_FUNCTION(value) isObjType(value, OBJ_FUNCTION)
 #define IS_NATIVE(value) isObjType(value, OBJ_NATIVE)
 #define IS_STRING(value) isObjType(value, OBJ_STRING)
 
+#define AS_CLOSURE(value) ((ObjClosure *)AS_OBJ(value))
 #define AS_FUNCTION(value) ((ObjFunction *)AS_OBJ(value))
 #define AS_NATIVE(value) (((ObjNative *)AS_OBJ(value))->function)
 #define AS_STRING(value) ((ObjString *)AS_OBJ(value))
 #define AS_CSTRING(value) (((ObjString *)AS_OBJ(value))->chars)
 
 typedef enum {
+  OBJ_CLOSURE,
   OBJ_FUNCTION,
   OBJ_NATIVE,
   OBJ_STRING,
@@ -48,6 +51,12 @@ struct ObjString {
   uint32_t hash;
 };
 
+typedef struct {
+  Obj obj;
+  ObjFunction *function;
+} ObjClosure;
+
+ObjClosure *newClosure(ObjFunction *function);
 ObjFunction *newFunction();
 ObjNative *newNative(NativeFn function);
 ObjString *takeString(char *chars, int length);
-- 
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