Added literal list loading feature to the snapshot tool. (#2422)

It is needed to load literals and register them as magic strings
to be able to generate static snapshots. Also modified the list
format saving feature to save all of the literals not only the
identifiers.

JerryScript-DCO-1.0-Signed-off-by: László Langó llango.u-szeged@partner.samsung.com

jerry-core/api/jerry-snapshot.c

@@ -1633,9 +1633,15 @@ jerry_parse_and_save_literals (const jerry_char_t *source_p, /**< script source
     {
       ecma_string_t *literal_p = ecma_get_string_from_value (*iterator_p);
 
-      /* We don't save a literal which isn't a valid identifier or it's a magic string. */
+      /* NOTE:
+       *      We don't save a literal (in C format) which isn't a valid
+       *      identifier or it's a magic string.
+       * TODO:
+       *      Save all of the literals in C format as well.
+       */
       if (ecma_get_string_magic (literal_p) == LIT_MAGIC_STRING__COUNT
-          && ecma_string_is_valid_identifier (literal_p))
+          && (!is_c_format
+              || (is_c_format && ecma_string_is_valid_identifier (literal_p))))
       {
         literal_count++;
       }
@@ -1666,8 +1672,15 @@ jerry_parse_and_save_literals (const jerry_char_t *source_p, /**< script source
     {
       ecma_string_t *literal_p = ecma_get_string_from_value (*iterator_p);
 
+      /* NOTE:
+       *      We don't save a literal (in C format) which isn't a valid
+       *      identifier or it's a magic string.
+       * TODO:
+       *      Save all of the literals in C format as well.
+       */
       if (ecma_get_string_magic (literal_p) == LIT_MAGIC_STRING__COUNT
-          && ecma_string_is_valid_identifier (literal_p))
+          && (!is_c_format
+              || (is_c_format && ecma_string_is_valid_identifier (literal_p))))
       {
         literal_array[literal_idx++] = literal_p;
       }