make env opaque

1 files changed, 28 insertions, 1 deletions

diff --git a/src/env.c b/src/env.c
index ff9da33..b78b095 100644
--- a/src/env.c
+++ b/src/env.c
@@ -3,10 +3,21 @@
 
 #include "common.h"
 #include "env.h"
+
+#include "hashtable.h"
 #include "value.h"
 
+struct env {
+    hashtable_t table;
+
+    struct env *parent;
+    size_t refs;
+
+    env_destroy_func destroy_func;
+};
+
 #include "mempool.h"
-MEMPOOL_GENERATE(env, struct symbol_table, 64)
+MEMPOOL_GENERATE(env, struct env, 64)
 
 #define ENV_TABLE_CAP (1 << 3)
 
@@ -67,6 +78,17 @@ void env_destroy(env_t env)
     env_mempool_free(env);
 }
 
+int env_insert(env_t env, char *key, value_t data,
+                     char **prevkey, value_t *prevdata)
+{
+    return hashtable_insert(env->table, (void *)key, (void *)data, (void **)prevkey, (void **)prevdata);
+}
+
+int env_query(env_t env, char *key, value_t *data)
+{
+    return hashtable_query(env->table, (void *)key, (void **)data);
+}
+
 env_t env_copy(env_t env)
 {
     if(env == ENV_EMPTY) return ENV_EMPTY;
@@ -76,3 +98,8 @@ env_t env_copy(env_t env)
 
     return env;
 }
+
+env_t env_parent(env_t env)
+{
+    return env->parent;
+}