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jerryscript/tests/unit-core/test-snapshot.c
Dániel Bátyai 9860d66a56
Rework the public API (#4829) 
Related to #4186.

Some notable changes:
  - The term 'Error' now strictly refers to native Error objects defined in
    the ECMA standard, which are ordinary objects. All other uses of
    'error' or 'error reference' where the term refers to a thrown value is
    now called 'exception'.

  - Simplified the naming scheme of many String API functions. These functions
    will now also take an 'encoding' argument to specify the desired
    encoding in which to operate.

  - Removed the substring-copy-to-buffer functions. These functions
    behaved awkwardly, as they use character index to specify the
    start/end positions, and were mostly used incorrectly with byte
    offsets instead. The functionality can still be replicated with
    other functions if necessary.

  - String-to-buffer functions will no longer fail if the buffer is not
    sufficiently large, the string will instead be cropped.

  - Fixed the usage of the '_sz' prefix in many API functions. The term
    'sz' means zero-terminated string in hungarian notation, this was
    used incorrectly in many cases.

  - Renamed most of the public API functions to have shorter, more on-point
    names, rather than the often too long descriptive names. Functions are now
    also grouped by the type of value they operate on, where this makes
    sense.

JerryScript-DCO-1.0-Signed-off-by: Dániel Bátyai dbatyai@inf.u-szeged.hu
2021-12-06 10:20:09 +01:00

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/* Copyright JS Foundation and other contributors, http://js.foundation
*
* Licensed under the Apache License, Version 2.0 (the "License");
* you may not use this file except in compliance with the License.
* You may obtain a copy of the License at
*
* http://www.apache.org/licenses/LICENSE-2.0
*
* Unless required by applicable law or agreed to in writing, software
* distributed under the License is distributed on an "AS IS" BASIS
* WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
* See the License for the specific language governing permissions and
* limitations under the License.
*/
#include "jerryscript.h"
#include "config.h"
#include "test-common.h"
/**
* Maximum size of snapshots buffer
*/
#define SNAPSHOT_BUFFER_SIZE (256)
/**
* Maximum size of literal buffer
*/
#define LITERAL_BUFFER_SIZE (256)
/**
* Magic strings
*/
static const jerry_char_t *magic_strings[] = { (const jerry_char_t *) " ", (const jerry_char_t *) "a",
(const jerry_char_t *) "b", (const jerry_char_t *) "c",
(const jerry_char_t *) "from", (const jerry_char_t *) "func",
(const jerry_char_t *) "string", (const jerry_char_t *) "snapshot" };
/**
* Magic string lengths
*/
static const jerry_length_t magic_string_lengths[] = { 1, 1, 1, 1, 4, 4, 6, 8 };
static void
test_function_snapshot (void)
{
/* function to snapshot */
if (!jerry_feature_enabled (JERRY_FEATURE_SNAPSHOT_SAVE) || !jerry_feature_enabled (JERRY_FEATURE_SNAPSHOT_EXEC))
{
return;
}
const jerry_init_flag_t flags = JERRY_INIT_EMPTY;
static uint32_t function_snapshot_buffer[SNAPSHOT_BUFFER_SIZE];
const jerry_char_t code_to_snapshot[] = "return a + b";
jerry_init (flags);
jerry_parse_options_t parse_options;
parse_options.options = JERRY_PARSE_HAS_ARGUMENT_LIST;
parse_options.argument_list = jerry_string_sz ("a, b");
jerry_value_t parse_result = jerry_parse (code_to_snapshot, sizeof (code_to_snapshot) - 1, &parse_options);
TEST_ASSERT (!jerry_value_is_exception (parse_result));
jerry_value_t generate_result =
jerry_generate_snapshot (parse_result, 0, function_snapshot_buffer, SNAPSHOT_BUFFER_SIZE);
jerry_value_free (parse_result);
jerry_value_free (parse_options.argument_list);
TEST_ASSERT (!jerry_value_is_exception (generate_result) && jerry_value_is_number (generate_result));
size_t function_snapshot_size = (size_t) jerry_value_as_number (generate_result);
jerry_value_free (generate_result);
jerry_cleanup ();
jerry_init (flags);
jerry_value_t function_obj = jerry_exec_snapshot (function_snapshot_buffer,
function_snapshot_size,
0,
JERRY_SNAPSHOT_EXEC_LOAD_AS_FUNCTION,
NULL);
TEST_ASSERT (!jerry_value_is_exception (function_obj));
TEST_ASSERT (jerry_value_is_function (function_obj));
jerry_value_t this_val = jerry_undefined ();
jerry_value_t args[2];
args[0] = jerry_number (1.0);
args[1] = jerry_number (2.0);
jerry_value_t res = jerry_call (function_obj, this_val, args, 2);
TEST_ASSERT (!jerry_value_is_exception (res));
TEST_ASSERT (jerry_value_is_number (res));
double num = jerry_value_as_number (res);
TEST_ASSERT (num == 3);
jerry_value_free (args[0]);
jerry_value_free (args[1]);
jerry_value_free (res);
jerry_value_free (function_obj);
jerry_cleanup ();
} /* test_function_snapshot */
static void
arguments_test_exec_snapshot (uint32_t *snapshot_p, size_t snapshot_size, uint32_t exec_snapshot_flags)
{
jerry_init (JERRY_INIT_EMPTY);
jerry_value_t res = jerry_exec_snapshot (snapshot_p, snapshot_size, 0, exec_snapshot_flags, NULL);
TEST_ASSERT (!jerry_value_is_exception (res));
TEST_ASSERT (jerry_value_is_number (res));
double raw_value = jerry_value_as_number (res);
TEST_ASSERT (raw_value == 15);
jerry_value_free (res);
jerry_cleanup ();
} /* arguments_test_exec_snapshot */
static void
test_function_arguments_snapshot (void)
{
if (jerry_feature_enabled (JERRY_FEATURE_SNAPSHOT_SAVE) && jerry_feature_enabled (JERRY_FEATURE_SNAPSHOT_EXEC))
{
static uint32_t arguments_snapshot_buffer[SNAPSHOT_BUFFER_SIZE];
const jerry_char_t code_to_snapshot[] = TEST_STRING_LITERAL ("function f(a,b,c) {"
" arguments[0]++;"
" arguments[1]++;"
" arguments[2]++;"
" return a + b + c;"
"}"
"f(3,4,5);");
jerry_init (JERRY_INIT_EMPTY);
jerry_value_t parse_result = jerry_parse (code_to_snapshot, sizeof (code_to_snapshot) - 1, NULL);
TEST_ASSERT (!jerry_value_is_exception (parse_result));
jerry_value_t generate_result =
jerry_generate_snapshot (parse_result, 0, arguments_snapshot_buffer, SNAPSHOT_BUFFER_SIZE);
jerry_value_free (parse_result);
TEST_ASSERT (!jerry_value_is_exception (generate_result) && jerry_value_is_number (generate_result));
size_t snapshot_size = (size_t) jerry_value_as_number (generate_result);
jerry_value_free (generate_result);
jerry_cleanup ();
arguments_test_exec_snapshot (arguments_snapshot_buffer, snapshot_size, 0);
arguments_test_exec_snapshot (arguments_snapshot_buffer, snapshot_size, JERRY_SNAPSHOT_EXEC_COPY_DATA);
}
} /* test_function_arguments_snapshot */
static void
test_exec_snapshot (uint32_t *snapshot_p, size_t snapshot_size, uint32_t exec_snapshot_flags)
{
char string_data[32];
jerry_init (JERRY_INIT_EMPTY);
jerry_register_magic_strings (magic_strings,
sizeof (magic_string_lengths) / sizeof (jerry_length_t),
magic_string_lengths);
jerry_value_t res = jerry_exec_snapshot (snapshot_p, snapshot_size, 0, exec_snapshot_flags, NULL);
TEST_ASSERT (!jerry_value_is_exception (res));
TEST_ASSERT (jerry_value_is_string (res));
jerry_size_t sz = jerry_string_size (res, JERRY_ENCODING_CESU8);
TEST_ASSERT (sz == 20);
sz = jerry_string_to_buffer (res, JERRY_ENCODING_CESU8, (jerry_char_t *) string_data, sz);
TEST_ASSERT (sz == 20);
jerry_value_free (res);
TEST_ASSERT (!strncmp (string_data, "string from snapshot", (size_t) sz));
jerry_cleanup ();
} /* test_exec_snapshot */
static void
test_snapshot_with_user (void)
{
if (jerry_feature_enabled (JERRY_FEATURE_SNAPSHOT_SAVE) && jerry_feature_enabled (JERRY_FEATURE_SNAPSHOT_EXEC))
{
static uint32_t snapshot_buffer[SNAPSHOT_BUFFER_SIZE];
const jerry_char_t code_to_snapshot[] = TEST_STRING_LITERAL ("function f() {}\n"
"f");
jerry_init (JERRY_INIT_EMPTY);
jerry_value_t parse_result = jerry_parse (code_to_snapshot, sizeof (code_to_snapshot) - 1, NULL);
TEST_ASSERT (!jerry_value_is_exception (parse_result));
jerry_value_t generate_result = jerry_generate_snapshot (parse_result, 0, snapshot_buffer, SNAPSHOT_BUFFER_SIZE);
jerry_value_free (parse_result);
TEST_ASSERT (!jerry_value_is_exception (generate_result) && jerry_value_is_number (generate_result));
size_t snapshot_size = (size_t) jerry_value_as_number (generate_result);
jerry_value_free (generate_result);
for (int i = 0; i < 3; i++)
{
jerry_exec_snapshot_option_values_t snapshot_exec_options;
if (i == 0)
{
snapshot_exec_options.user_value = jerry_object ();
}
else if (i == 1)
{
snapshot_exec_options.user_value = jerry_number (-3.5);
}
else
{
snapshot_exec_options.user_value = jerry_string_sz ("AnyString...");
}
jerry_value_t result = jerry_exec_snapshot (snapshot_buffer,
snapshot_size,
0,
JERRY_SNAPSHOT_EXEC_HAS_USER_VALUE,
&snapshot_exec_options);
TEST_ASSERT (!jerry_value_is_exception (result) && jerry_value_is_function (result));
jerry_value_t user_value = jerry_source_user_value (result);
jerry_value_free (result);
result = jerry_binary_op (JERRY_BIN_OP_STRICT_EQUAL, user_value, snapshot_exec_options.user_value);
TEST_ASSERT (jerry_value_is_true (result));
jerry_value_free (result);
jerry_value_free (user_value);
jerry_value_free (snapshot_exec_options.user_value);
}
jerry_cleanup ();
}
} /* test_snapshot_with_user */
int
main (void)
{
TEST_INIT ();
/* Static snapshot */
if (jerry_feature_enabled (JERRY_FEATURE_SNAPSHOT_SAVE) && jerry_feature_enabled (JERRY_FEATURE_SNAPSHOT_EXEC))
{
static uint32_t snapshot_buffer[SNAPSHOT_BUFFER_SIZE];
const jerry_char_t code_to_snapshot[] = TEST_STRING_LITERAL ("function func(a, b, c) {"
" c = 'snapshot';"
" return arguments[0] + ' ' + b + ' ' + arguments[2];"
"};"
"func('string', 'from');");
jerry_init (JERRY_INIT_EMPTY);
jerry_register_magic_strings (magic_strings,
sizeof (magic_string_lengths) / sizeof (jerry_length_t),
magic_string_lengths);
jerry_value_t parse_result = jerry_parse (code_to_snapshot, sizeof (code_to_snapshot) - 1, NULL);
TEST_ASSERT (!jerry_value_is_exception (parse_result));
jerry_value_t generate_result =
jerry_generate_snapshot (parse_result, JERRY_SNAPSHOT_SAVE_STATIC, snapshot_buffer, SNAPSHOT_BUFFER_SIZE);
jerry_value_free (parse_result);
TEST_ASSERT (!jerry_value_is_exception (generate_result) && jerry_value_is_number (generate_result));
size_t snapshot_size = (size_t) jerry_value_as_number (generate_result);
jerry_value_free (generate_result);
/* Static snapshots are not supported by default. */
jerry_value_t exec_result = jerry_exec_snapshot (snapshot_buffer, snapshot_size, 0, 0, NULL);
TEST_ASSERT (jerry_value_is_exception (exec_result));
jerry_value_free (exec_result);
jerry_cleanup ();
test_exec_snapshot (snapshot_buffer, snapshot_size, JERRY_SNAPSHOT_EXEC_ALLOW_STATIC);
}
/* Merge snapshot */
if (jerry_feature_enabled (JERRY_FEATURE_SNAPSHOT_SAVE) && jerry_feature_enabled (JERRY_FEATURE_SNAPSHOT_EXEC))
{
static uint32_t snapshot_buffer_0[SNAPSHOT_BUFFER_SIZE];
static uint32_t snapshot_buffer_1[SNAPSHOT_BUFFER_SIZE];
size_t snapshot_sizes[2];
static uint32_t merged_snapshot_buffer[SNAPSHOT_BUFFER_SIZE];
const jerry_char_t code_to_snapshot1[] = "var a = 'hello'; 123";
jerry_init (JERRY_INIT_EMPTY);
jerry_value_t parse_result = jerry_parse (code_to_snapshot1, sizeof (code_to_snapshot1) - 1, NULL);
TEST_ASSERT (!jerry_value_is_exception (parse_result));
jerry_value_t generate_result = jerry_generate_snapshot (parse_result, 0, snapshot_buffer_0, SNAPSHOT_BUFFER_SIZE);
jerry_value_free (parse_result);
TEST_ASSERT (!jerry_value_is_exception (generate_result) && jerry_value_is_number (generate_result));
snapshot_sizes[0] = (size_t) jerry_value_as_number (generate_result);
jerry_value_free (generate_result);
jerry_cleanup ();
const jerry_char_t code_to_snapshot2[] = "var b = 'hello'; 456";
jerry_init (JERRY_INIT_EMPTY);
parse_result = jerry_parse (code_to_snapshot2, sizeof (code_to_snapshot2) - 1, NULL);
TEST_ASSERT (!jerry_value_is_exception (parse_result));
generate_result = jerry_generate_snapshot (parse_result, 0, snapshot_buffer_1, SNAPSHOT_BUFFER_SIZE);
jerry_value_free (parse_result);
TEST_ASSERT (!jerry_value_is_exception (generate_result) && jerry_value_is_number (generate_result));
snapshot_sizes[1] = (size_t) jerry_value_as_number (generate_result);
jerry_value_free (generate_result);
jerry_cleanup ();
jerry_init (JERRY_INIT_EMPTY);
const char *error_p;
const uint32_t *snapshot_buffers[2];
snapshot_buffers[0] = snapshot_buffer_0;
snapshot_buffers[1] = snapshot_buffer_1;
static uint32_t snapshot_buffer_0_bck[SNAPSHOT_BUFFER_SIZE];
static uint32_t snapshot_buffer_1_bck[SNAPSHOT_BUFFER_SIZE];
memcpy (snapshot_buffer_0_bck, snapshot_buffer_0, SNAPSHOT_BUFFER_SIZE);
memcpy (snapshot_buffer_1_bck, snapshot_buffer_1, SNAPSHOT_BUFFER_SIZE);
size_t merged_size = jerry_merge_snapshots (snapshot_buffers,
snapshot_sizes,
2,
merged_snapshot_buffer,
SNAPSHOT_BUFFER_SIZE,
&error_p);
jerry_cleanup ();
TEST_ASSERT (0 == memcmp (snapshot_buffer_0_bck, snapshot_buffer_0, SNAPSHOT_BUFFER_SIZE));
TEST_ASSERT (0 == memcmp (snapshot_buffer_1_bck, snapshot_buffer_1, SNAPSHOT_BUFFER_SIZE));
jerry_init (JERRY_INIT_EMPTY);
jerry_value_t res = jerry_exec_snapshot (merged_snapshot_buffer, merged_size, 0, 0, NULL);
TEST_ASSERT (!jerry_value_is_exception (res));
TEST_ASSERT (jerry_value_as_number (res) == 123);
jerry_value_free (res);
res = jerry_exec_snapshot (merged_snapshot_buffer, merged_size, 1, 0, NULL);
TEST_ASSERT (!jerry_value_is_exception (res));
TEST_ASSERT (jerry_value_as_number (res) == 456);
jerry_value_free (res);
jerry_cleanup ();
}
/* Save literals */
if (jerry_feature_enabled (JERRY_FEATURE_SNAPSHOT_SAVE))
{
/* C format generation */
jerry_init (JERRY_INIT_EMPTY);
static jerry_char_t literal_buffer_c[LITERAL_BUFFER_SIZE];
static uint32_t literal_snapshot_buffer[SNAPSHOT_BUFFER_SIZE];
static const jerry_char_t code_for_c_format[] = "var object = { aa:'fo\" o\\n \\\\', Bb:'max', aaa:'xzy0' };";
jerry_value_t parse_result = jerry_parse (code_for_c_format, sizeof (code_for_c_format) - 1, NULL);
TEST_ASSERT (!jerry_value_is_exception (parse_result));
jerry_value_t generate_result =
jerry_generate_snapshot (parse_result, 0, literal_snapshot_buffer, SNAPSHOT_BUFFER_SIZE);
jerry_value_free (parse_result);
TEST_ASSERT (!jerry_value_is_exception (generate_result));
TEST_ASSERT (jerry_value_is_number (generate_result));
size_t snapshot_size = (size_t) jerry_value_as_number (generate_result);
jerry_value_free (generate_result);
const size_t lit_c_buf_sz = jerry_get_literals_from_snapshot (literal_snapshot_buffer,
snapshot_size,
literal_buffer_c,
LITERAL_BUFFER_SIZE,
true);
TEST_ASSERT (lit_c_buf_sz == 239);
static const char *expected_c_format = ("jerry_length_t literal_count = 5;\n\n"
"jerry_char_t *literals[5] =\n"
"{\n"
" \"Bb\",\n"
" \"aa\",\n"
" \"aaa\",\n"
" \"xzy0\",\n"
" \"fo\\\" o\\x0A \\\\\"\n"
"};\n\n"
"jerry_length_t literal_sizes[5] =\n"
"{\n"
" 2 /* Bb */,\n"
" 2 /* aa */,\n"
" 3 /* aaa */,\n"
" 4 /* xzy0 */,\n"
" 8 /* fo\" o\n \\ */\n"
"};\n");
TEST_ASSERT (!strncmp ((char *) literal_buffer_c, expected_c_format, lit_c_buf_sz));
/* List format generation */
static jerry_char_t literal_buffer_list[LITERAL_BUFFER_SIZE];
const size_t lit_list_buf_sz = jerry_get_literals_from_snapshot (literal_snapshot_buffer,
snapshot_size,
literal_buffer_list,
LITERAL_BUFFER_SIZE,
false);
TEST_ASSERT (lit_list_buf_sz == 34);
TEST_ASSERT (
!strncmp ((char *) literal_buffer_list, "2 Bb\n2 aa\n3 aaa\n4 xzy0\n8 fo\" o\n \\\n", lit_list_buf_sz));
jerry_cleanup ();
}
test_function_snapshot ();
test_function_arguments_snapshot ();
test_snapshot_with_user ();
return 0;
} /* main */
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