Chapter 19.1 - 19.2

1 files changed, 8 insertions, 0 deletions

diff --git a/clox/src/value.h b/clox/src/value.h
index 96df347..6896bea 100644
--- a/clox/src/value.h
+++ b/clox/src/value.h
@@ -3,10 +3,14 @@
 
 #include "common.h"
 
+typedef struct Obj Obj;
+typedef struct ObjString ObjString;
+
 typedef enum {
   VAL_BOOL,
   VAL_NIL,
   VAL_NUMBER,
+  VAL_OBJ,
 } ValueType;
 
 typedef struct {
@@ -14,19 +18,23 @@ typedef struct {
   union {
     bool boolean;
     double number;
+    Obj *obj;
   } as;
 } Value;
 
 #define IS_BOOL(value) ((value).type == VAL_BOOL)
 #define IS_NIL(value) ((value).type == VAL_NIL)
 #define IS_NUMBER(value) ((value).type == VAL_NUMBER)
+#define IS_OBJ(value) ((value).type == VAL_OBJ)
 
+#define AS_OBJ(value) ((value).as.obj)
 #define AS_BOOL(value) ((value).as.boolean)
 #define AS_NUMBER(value) ((value).as.number)
 
 #define BOOL_VAL(value) ((Value){VAL_BOOL, {.boolean = value}})
 #define NIL_VAL ((Value){VAL_NIL, {.number = 0}})
 #define NUMBER_VAL(value) ((Value){VAL_NUMBER, {.number = value}})
+#define OBJ_VAL(value) ((Value){VAL_OBJ, {.obj = (Obj *)object}})
 
 typedef struct {
   int capacity;