(cos_string_ent_nil): New variable.

(cos_symbol_ent_nil): New variable.
(cos_Qnil): New variable.
(cos_string_ent_t): New variable.
(cos_symbol_ent_t): New variable.
(cos_Qt): New variable.
(cos_intern): Setup `nil' and `t'.
(cos_symbol_table_grow): Release old `table->data'.

diff --git a/symbol.c b/symbol.c
index bf544f7..a01b4ce 100644 (file)
--- a/symbol.c
+++ b/symbol.c
@@ -25,6 +25,37 @@ unsigned long cos_hash_c_string_n (const unsigned char *ptr, size_t size);
 unsigned long cos_symbol_hash_string (COS_String string);
 
 
+COS_String_ent cos_string_ent_nil = { {COS_OBJECT_PREFIX_OBJECT,
+                                      COS_Object_Type_String,
+                                      1},
+                                     3, "nil"};
+
+COS_Symbol_ent cos_symbol_ent_nil = { {COS_OBJECT_PREFIX_OBJECT,
+                                      COS_Object_Type_Symbol,
+                                      1},
+                                     &cos_string_ent_nil,
+                                     NULL};
+
+COS_Symbol cos_Qnil = &cos_symbol_ent_nil;
+
+
+COS_String_ent cos_string_ent_t = { {COS_OBJECT_PREFIX_OBJECT,
+                                    COS_Object_Type_String,
+                                    1},
+                                   1, "t"};
+
+COS_Symbol_ent cos_symbol_ent_t = { {COS_OBJECT_PREFIX_OBJECT,
+                                    COS_Object_Type_Symbol,
+                                    1},
+                                   &cos_string_ent_t,
+                                   NULL};
+
+COS_Symbol cos_Qt = &cos_symbol_ent_t;
+
+
+COS_Symbol_Table cos_default_symbol_table = NULL;
+
+
 COS_Symbol
 cos_make_symbol (COS_String string)
 {
@@ -102,8 +133,6 @@ cos_symbol_name (COS_Symbol symbol)
 }
 
 
-COS_Symbol_Table cos_default_symbol_table = NULL;
-
 COS_Symbol_Table cos_make_symbol_table_0 (size_t size);
 void cos_destroy_symbol_table_0 (COS_Symbol_Table hash);
 
@@ -196,8 +225,11 @@ COS_Symbol
 cos_intern (COS_object name)
 {
   if (cos_default_symbol_table == NULL)
-    cos_default_symbol_table = cos_make_symbol_table();
-
+    {
+      cos_default_symbol_table = cos_make_symbol_table();
+      cos_symbol_table_set (cos_default_symbol_table, cos_Qnil);
+      cos_symbol_table_set (cos_default_symbol_table, cos_Qt);
+    }
   return cos_symbol_table_intern (cos_default_symbol_table, name);
 }
 
@@ -257,6 +289,7 @@ cos_symbol_table_grow (COS_Symbol_Table table)
            }
        }
     }
+  free (table->data);
   table->size = new_table->size;
   table->data = new_table->data;
   free (new_table);