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Add support for aborts. (#2176)

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Aborts are similar to exceptions except they are not caught by catch
and finally blocks. Callbacks should honor aborts as well and return
them without processing them. Aborts are never thrown by JavaScript
code.

In the future certain events such as out-of-memory condition may
also throw aborts.

JerryScript-DCO-1.0-Signed-off-by: Zoltan Herczeg zherczeg.u-szeged@partner.samsung.com
This commit is contained in:
Zoltan Herczeg
2018-01-30 01:13:44 +01:00
committed by yichoi
parent b548eae4ad
commit 918eb22a01
17 changed files with 477 additions and 144 deletions
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tests/unit-core/test-api.c
-59
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@@ -166,21 +166,6 @@ handler_construct (const jerry_value_t func_obj_val, /**< function object */
return jerry_create_boolean (true);
} /* handler_construct */
static jerry_value_t
vm_exec_stop_callback (void *user_p)
{
int *int_p = (int *) user_p;
if (*int_p > 0)
{
(*int_p)--;
return jerry_create_undefined ();
}
return jerry_create_string ((const jerry_char_t *) "Abort script");
} /* vm_exec_stop_callback */
/**
* Extended Magic Strings
*/
@@ -1100,50 +1085,6 @@ main (void)
jerry_cleanup ();
}
/* Test stopping an infinite loop. */
if (jerry_is_feature_enabled (JERRY_FEATURE_VM_EXEC_STOP))
{
jerry_init (JERRY_INIT_EMPTY);
int countdown = 6;
jerry_set_vm_exec_stop_callback (vm_exec_stop_callback, &countdown, 16);
const char *inf_loop_code_src_p = "while(true) {}";
parsed_code_val = jerry_parse ((jerry_char_t *) inf_loop_code_src_p, strlen (inf_loop_code_src_p), false);
TEST_ASSERT (!jerry_value_has_error_flag (parsed_code_val));
res = jerry_run (parsed_code_val);
TEST_ASSERT (countdown == 0);
TEST_ASSERT (jerry_value_has_error_flag (res));
jerry_release_value (res);
jerry_release_value (parsed_code_val);
/* A more complex example. Although the callback error is captured
* by the catch block, it is automatically thrown again. */
/* We keep the callback function, only the countdown is reset. */
countdown = 6;
inf_loop_code_src_p = ("function f() { while (true) ; }\n"
"try { f(); } catch(e) {}");
parsed_code_val = jerry_parse ((jerry_char_t *) inf_loop_code_src_p, strlen (inf_loop_code_src_p), false);
TEST_ASSERT (!jerry_value_has_error_flag (parsed_code_val));
res = jerry_run (parsed_code_val);
TEST_ASSERT (countdown == 0);
/* The result must have an error flag which proves that
* the error is thrown again inside the catch block. */
TEST_ASSERT (jerry_value_has_error_flag (res));
jerry_release_value (res);
jerry_release_value (parsed_code_val);
jerry_cleanup ();
}
/* External Magic String */
jerry_init (JERRY_INIT_SHOW_OPCODES);