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[API] Introduce jerry_parse_and_save_literals() (#1500)

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This function can be used to save literals into a specific file in a list or C format.
These literals are valid identifiers, and doesn't match to any magic-string.
The '--save-literals-list-format FILE' and '--save-literals-c-format FILE'
options are used to save into the given file, when the snapshot-save is enabled.
The saved literals are sorted by size and lexicographically.
The C-format is useful for jerry_register_magic_strings() to generate the array
of external magic strings.

JerryScript-DCO-1.0-Signed-off-by: Zsolt Borbély zsborbely.u-szeged@partner.samsung.com
This commit is contained in:
Zsolt Borbély
2017-01-11 14:18:09 +01:00
committed by GitHub
parent 7d83293762
commit f1ed5715e3
5 changed files with 631 additions and 13 deletions
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jerry-main/main-unix.c
+83 -13
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@@ -126,6 +126,8 @@ print_help (char *name)
" --show-regexp-opcodes\n"
" --save-snapshot-for-global FILE\n"
" --save-snapshot-for-eval FILE\n"
" --save-literals-list-format FILE\n"
" --save-literals-c-format FILE\n"
" --exec-snapshot FILE\n"
" --log-level [0-3]\n"
" --abort-on-fail\n"
@@ -354,6 +356,10 @@ main (int argc,
bool is_save_snapshot_mode_for_global_or_eval = false;
const char *save_snapshot_file_name_p = NULL;
bool is_save_literals_mode = false;
bool is_save_literals_mode_in_c_format_or_list = false;
const char *save_literals_file_name_p = NULL;
bool is_repl_mode = false;
bool no_prompt = false;
@@ -485,6 +491,38 @@ main (int argc,
"Ignoring 'exec-snapshot' option because this feature isn't enabled!\n");
}
}
else if (!strcmp ("--save-literals-list-format", argv[i])
|| !strcmp ("--save-literals-c-format", argv[i]))
{
if (++i >= argc)
{
jerry_port_log (JERRY_LOG_LEVEL_ERROR, "Error: no file specified for %s\n", argv[i - 1]);
print_usage (argv[0]);
return JERRY_STANDALONE_EXIT_CODE_FAIL;
}
if (jerry_is_feature_enabled (JERRY_FEATURE_SNAPSHOT_SAVE))
{
is_save_literals_mode = true;
is_save_literals_mode_in_c_format_or_list = !strcmp ("--save-literals-c-format", argv[i - 1]);
if (save_literals_file_name_p != NULL)
{
jerry_port_log (JERRY_LOG_LEVEL_ERROR, "Error: literal file name already specified\n");
print_usage (argv[0]);
return JERRY_STANDALONE_EXIT_CODE_FAIL;
}
save_literals_file_name_p = argv[i];
}
else
{
jerry_port_default_set_log_level (JERRY_LOG_LEVEL_WARNING);
jerry_port_log (JERRY_LOG_LEVEL_WARNING,
"Ignoring 'save-literals' option because this feature is disabled!\n");
}
}
else if (!strcmp ("--log-level", argv[i]))
{
if (++i >= argc)
@@ -544,6 +582,16 @@ main (int argc,
}
}
if (jerry_is_feature_enabled (JERRY_FEATURE_SNAPSHOT_SAVE) && is_save_literals_mode)
{
if (files_counter != 1)
{
jerry_port_log (JERRY_LOG_LEVEL_ERROR,
"Error: --save-literals-* options work with exactly one script\n");
return JERRY_STANDALONE_EXIT_CODE_FAIL;
}
}
if (files_counter == 0
&& exec_snapshots_count == 0)
{
@@ -610,25 +658,47 @@ main (int argc,
break;
}
if (jerry_is_feature_enabled (JERRY_FEATURE_SNAPSHOT_SAVE) && is_save_snapshot_mode)
if (jerry_is_feature_enabled (JERRY_FEATURE_SNAPSHOT_SAVE) && (is_save_snapshot_mode || is_save_literals_mode))
{
static uint8_t snapshot_save_buffer[ JERRY_BUFFER_SIZE ];
size_t snapshot_size = jerry_parse_and_save_snapshot ((jerry_char_t *) source_p,
source_size,
is_save_snapshot_mode_for_global_or_eval,
false,
snapshot_save_buffer,
JERRY_BUFFER_SIZE);
if (snapshot_size == 0)
if (is_save_snapshot_mode)
{
ret_value = jerry_create_error (JERRY_ERROR_COMMON, (jerry_char_t *) "");
size_t snapshot_size = jerry_parse_and_save_snapshot ((jerry_char_t *) source_p,
source_size,
is_save_snapshot_mode_for_global_or_eval,
false,
snapshot_save_buffer,
JERRY_BUFFER_SIZE);
if (snapshot_size == 0)
{
ret_value = jerry_create_error (JERRY_ERROR_COMMON, (jerry_char_t *) "Snapshot saving failed!");
}
else
{
FILE *snapshot_file_p = fopen (save_snapshot_file_name_p, "w");
fwrite (snapshot_save_buffer, sizeof (uint8_t), snapshot_size, snapshot_file_p);
fclose (snapshot_file_p);
}
}
else
if (!jerry_value_has_error_flag (ret_value) && is_save_literals_mode)
{
FILE *snapshot_file_p = fopen (save_snapshot_file_name_p, "w");
fwrite (snapshot_save_buffer, sizeof (uint8_t), snapshot_size, snapshot_file_p);
fclose (snapshot_file_p);
const size_t literal_buffer_size = jerry_parse_and_save_literals ((jerry_char_t *) source_p,
source_size,
false,
snapshot_save_buffer,
JERRY_BUFFER_SIZE,
is_save_literals_mode_in_c_format_or_list);
if (literal_buffer_size == 0)
{
ret_value = jerry_create_error (JERRY_ERROR_COMMON, (jerry_char_t *) "Literal saving failed!");
}
else
{
FILE *literal_file_p = fopen (save_literals_file_name_p, "w");
fwrite (snapshot_save_buffer, sizeof (uint8_t), literal_buffer_size, literal_file_p);
fclose (literal_file_p);
}
}
}
else