Massively optimize how rules are handled

This commit does a lot of things:

- Use hashtables instead of lists to store the rules
- Rules that can be applied at launch time won't be tried at runtime
- Improve feedback when writing nonsensical rules
- Make intensive use of `zend_string` instead of `char*`

1 files changed, 3 insertions, 4 deletions

diff --git a/src/sp_var_value.c b/src/sp_var_value.c
index 7ed8dfa..e91c3d8 100644
--- a/src/sp_var_value.c
+++ b/src/sp_var_value.c
@@ -107,10 +107,9 @@ static zval *get_array_value(zend_execute_data *ed, zval *zvalue,
   }
 
   if (Z_TYPE_P(zvalue) == IS_ARRAY) {
-    char *idx = sp_convert_to_string(idx_value);
-    zval *ret = get_entry_hashtable(Z_ARRVAL_P(zvalue), idx, strlen(idx));
-    efree(idx);
-    return ret;
+    const zend_string *idx = sp_zval_to_zend_string(idx_value);
+    return get_entry_hashtable(Z_ARRVAL_P(zvalue), ZSTR_VAL(idx),
+                               ZSTR_LEN(idx));
   }
 
   return NULL;