1 files changed, 9 insertions, 5 deletions
diff --git a/src/env.h b/src/env.h
index a233a09..3415410 100644
--- a/src/env.h
+++ b/src/env.h
@@ -1,22 +1,26 @@
 #ifndef ENV_H
 #define ENV_H
 
+#include "list.h"
+
 // #include "value.h"
 typedef struct value * _value_t;
 
 typedef struct env * env_t;
 #define ENV_EMPTY NULL
 
-typedef void (*env_destroy_func)(char *key, _value_t value);
+enum env_kv_flag {
+    ENV_KV_FREE_KEY     = 1,
+    ENV_KV_CIRCULAR_REF = 2
+};
 
-env_t env_create(env_t parent, env_destroy_func destroy_func);
+env_t env_create(env_t parent);
 void env_destroy(env_t env);
 
-int env_insert(env_t env, char *key, _value_t data,
-                     char **prevkey, _value_t *prevdata);
+int env_insert(env_t env, char *key, _value_t value,
+               _value_t *prevval, int flags);
 int env_query(env_t env, char *key, _value_t *data);
 
 env_t env_copy(env_t env);
-env_t env_parent(env_t env);
 
 #endif