Improve empty checks of ecma strings

JerryScript-DCO-1.0-Signed-off-by: László Langó llango.u-szeged@partner.samsung.com
2016-05-31 14:38:36 +02:00
parent 2324617928
commit 7f153c799a
8 changed files with 29 additions and 17 deletions
@@ -831,6 +831,19 @@ ecma_string_raw_chars (const ecma_string_t *string_p, /**< ecma-string */
  return result_p;
 } /* ecma_string_raw_chars */

+/**
+ * Checks whether ecma string is empty or not
+ *
+ * @return true  - if empty
+ *         false - otherwise
+ */
+bool
+ecma_string_is_empty (const ecma_string_t *str_p) /**< ecma-string */
+{
+  return (ECMA_STRING_GET_CONTAINER (str_p) == ECMA_STRING_CONTAINER_MAGIC_STRING
+          && str_p->u.magic_string_id == LIT_MAGIC_STRING__EMPTY);
+} /* ecma_string_is_empty */
+
 /**
 * Long path part of ecma-string to ecma-string comparison routine
 *