Add line info support. (#2286)
Add line info data to byte, which allows getting a backtrace info directly from the engine. Snapshots are not supported. JerryScript-DCO-1.0-Signed-off-by: Zoltan Herczeg zherczeg.u-szeged@partner.samsung.com
This commit is contained in:
Zoltan Herczeg
@@ -0,0 +1,202 @@
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/* Copyright JS Foundation and other contributors, http://js.foundation
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*
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* Licensed under the Apache License, Version 2.0 (the "License");
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* you may not use this file except in compliance with the License.
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* You may obtain a copy of the License at
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*
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* http://www.apache.org/licenses/LICENSE-2.0
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*
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* Unless required by applicable law or agreed to in writing, software
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* distributed under the License is distributed on an "AS IS" BASIS
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* WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
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* See the License for the specific language governing permissions and
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* limitations under the License.
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*/
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#include "config.h"
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#include "jerryscript.h"
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#include "test-common.h"
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static jerry_value_t
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backtrace_handler (const jerry_value_t function_obj, /**< function object */
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const jerry_value_t this_val, /**< this value */
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const jerry_value_t args_p[], /**< argument list */
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const jerry_length_t args_count) /**< argument count */
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{
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JERRY_UNUSED (function_obj);
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JERRY_UNUSED (this_val);
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uint32_t max_depth = 0;
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if (args_count > 0 && jerry_value_is_number (args_p[0]))
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{
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max_depth = (uint32_t) jerry_get_number_value (args_p[0]);
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}
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return jerry_get_backtrace (max_depth);
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} /* backtrace_handler */
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static jerry_value_t
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run (const char *resource_name_p, /**< resource name */
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const char *source_p) /**< source code */
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{
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jerry_value_t code = jerry_parse ((const jerry_char_t *) resource_name_p,
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strlen (resource_name_p),
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(const jerry_char_t *) source_p,
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strlen (source_p),
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JERRY_PARSE_NO_OPTS);
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TEST_ASSERT (!jerry_value_has_error_flag (code));
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jerry_value_t result = jerry_run (code);
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jerry_release_value (code);
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return result;
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} /* run */
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static void
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compare (jerry_value_t array, /**< array */
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uint32_t index, /**< item index */
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const char *str) /**< string to compare */
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{
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jerry_char_t buf[64];
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size_t len = strlen (str);
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TEST_ASSERT (len < sizeof (buf));
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jerry_value_t value = jerry_get_property_by_index (array, index);
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TEST_ASSERT (!jerry_value_has_error_flag (value)
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&& jerry_value_is_string (value));
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TEST_ASSERT (jerry_get_string_size (value) == len);
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jerry_size_t str_len = jerry_string_to_char_buffer (value, buf, (jerry_size_t) len);
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TEST_ASSERT (str_len == len);
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jerry_release_value (value);
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TEST_ASSERT (memcmp (buf, str, len) == 0);
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} /* compare */
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int
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main (void)
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{
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TEST_INIT ();
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TEST_ASSERT (jerry_is_feature_enabled (JERRY_FEATURE_LINE_INFO));
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jerry_init (JERRY_INIT_EMPTY);
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jerry_value_t global = jerry_get_global_object ();
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jerry_value_t func = jerry_create_external_function (backtrace_handler);
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jerry_value_t name = jerry_create_string ((const jerry_char_t *) "backtrace");
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jerry_value_t result = jerry_set_property (global, name, func);
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TEST_ASSERT (!jerry_value_has_error_flag (result));
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jerry_release_value (result);
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jerry_release_value (name);
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jerry_release_value (func);
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jerry_release_value (global);
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const char *source = ("function f() {\n"
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" return backtrace(0);\n"
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"}\n"
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"\n"
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"function g() {\n"
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" return f();\n"
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"}\n"
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"\n"
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"function h() {\n"
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" return g();\n"
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"}\n"
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"\n"
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"h();\n");
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jerry_value_t backtrace = run ("something.js", source);
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TEST_ASSERT (!jerry_value_has_error_flag (backtrace)
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&& jerry_value_is_array (backtrace));
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TEST_ASSERT (jerry_get_array_length (backtrace) == 4);
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compare (backtrace, 0, "something.js:2");
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compare (backtrace, 1, "something.js:6");
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compare (backtrace, 2, "something.js:10");
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compare (backtrace, 3, "something.js:13");
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jerry_release_value (backtrace);
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/* Depth set to 2 this time. */
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source = ("function f() {\n"
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" return backtrace(2);\n"
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"}\n"
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"\n"
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"function g() {\n"
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" return f();\n"
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"}\n"
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"\n"
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"function h() {\n"
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" return g();\n"
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"}\n"
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"\n"
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"h();\n");
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backtrace = run ("something_else.js", source);
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TEST_ASSERT (!jerry_value_has_error_flag (backtrace)
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&& jerry_value_is_array (backtrace));
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TEST_ASSERT (jerry_get_array_length (backtrace) == 2);
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compare (backtrace, 0, "something_else.js:2");
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compare (backtrace, 1, "something_else.js:6");
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jerry_release_value (backtrace);
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jerry_cleanup ();
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jerry_init (JERRY_INIT_EMPTY);
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source = ("function f() {\n"
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" undef_reference;\n"
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"}\n"
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"\n"
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"function g() {\n"
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" return f();\n"
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"}\n"
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"\n"
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"g();\n");
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jerry_value_t error = run ("bad.js", source);
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TEST_ASSERT (jerry_value_has_error_flag (error));
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jerry_value_clear_error_flag (&error);
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TEST_ASSERT (jerry_value_is_object (error));
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name = jerry_create_string ((const jerry_char_t *) "stack");
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backtrace = jerry_get_property (error, name);
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jerry_release_value (name);
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jerry_release_value (error);
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TEST_ASSERT (!jerry_value_has_error_flag (backtrace)
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&& jerry_value_is_array (backtrace));
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TEST_ASSERT (jerry_get_array_length (backtrace) == 3);
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compare (backtrace, 0, "bad.js:2");
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compare (backtrace, 1, "bad.js:6");
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compare (backtrace, 2, "bad.js:9");
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jerry_release_value (backtrace);
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jerry_cleanup ();
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return 0;
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} /* main */
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@@ -216,7 +216,7 @@ main (void)
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/* Check the snapshot data. Unused bytes should be filled with zeroes */
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const uint8_t expected_data[] =
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{
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0x4A, 0x52, 0x52, 0x59, 0x0B, 0x00, 0x00, 0x00,
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0x4A, 0x52, 0x52, 0x59, 0x0C, 0x00, 0x00, 0x00,
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0x00, 0x00, 0x00, 0x00, 0x48, 0x00, 0x00, 0x00,
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0x01, 0x00, 0x00, 0x00, 0x18, 0x00, 0x00, 0x00,
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0x03, 0x00, 0x01, 0x00, 0x01, 0x00, 0x01, 0x00,
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