Implement nullish coalescing operator (#3997)

JerryScript-DCO-1.0-Signed-off-by: bence gabor kis kisbg@inf.u-szeged.hu
2020-07-17 15:42:51 +02:00
parent f60e16d9d5
commit dfd9d4497a
13 changed files with 323 additions and 72 deletions
@@ -154,6 +154,7 @@ typedef enum
  PARSER_ERR_INVALID_DESTRUCTURING_PATTERN,           /**< invalid destructuring pattern */
  PARSER_ERR_ILLEGAL_PROPERTY_IN_DECLARATION,         /**< illegal property in declaration context */
  PARSER_ERR_INVALID_EXPONENTIATION,                  /**< left operand of ** operator cannot be unary expression */
+  PARSER_ERR_INVALID_NULLISH_COALESCING,              /**< Cannot chain nullish with logical AND or OR. */
  PARSER_ERR_NEW_TARGET_EXPECTED,                     /**< expected new.target expression */
  PARSER_ERR_NEW_TARGET_NOT_ALLOWED,                  /**< new.target is not allowed in the given context */
 #endif /* ENABLED (JERRY_ESNEXT) */