Add support for aborts. (#2176)

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
2018-01-30 01:13:44 +01:00
parent b548eae4ad
commit 918eb22a01
17 changed files with 477 additions and 144 deletions
@@ -0,0 +1,129 @@
+/* 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 "config.h"
+#include "jerryscript.h"
+
+#include "test-common.h"
+
+static jerry_value_t
+callback_func (const jerry_value_t function_obj,
+               const jerry_value_t this_val,
+               const jerry_value_t args_p[],
+               const jerry_length_t args_count)
+{
+  JERRY_UNUSED (function_obj);
+  JERRY_UNUSED (this_val);
+  JERRY_UNUSED (args_p);
+  JERRY_UNUSED (args_count);
+
+  jerry_value_t value = jerry_create_string ((jerry_char_t *) "Abort run!");
+  jerry_value_set_abort_flag (&value);
+  return value;
+} /* callback_func */
+
+int
+main (void)
+{
+  TEST_INIT ();
+
+  jerry_init (JERRY_INIT_EMPTY);
+
+  jerry_value_t global = jerry_get_global_object ();
+  jerry_value_t callback_name = jerry_create_string ((jerry_char_t *) "callback");
+  jerry_value_t func = jerry_create_external_function (callback_func);
+  jerry_value_t res = jerry_set_property (global, callback_name, func);
+  TEST_ASSERT (!jerry_value_has_error_flag (res));
+
+  jerry_release_value (res);
+  jerry_release_value (func);
+  jerry_release_value (callback_name);
+  jerry_release_value (global);
+
+  const char *inf_loop_code_src_p = ("while(true) {\n"
+                                     "  with ({}) {\n"
+                                     "    try {\n"
+                                     "      callback();\n"
+                                     "    } catch (e) {\n"
+                                     "    } finally {\n"
+                                     "    }\n"
+                                     "  }\n"
+                                     "}");
+
+  jerry_value_t 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 (jerry_value_has_abort_flag (res));
+
+  jerry_release_value (res);
+  jerry_release_value (parsed_code_val);
+
+  inf_loop_code_src_p = ("function f() {"
+                         "  while(true) {\n"
+                         "    with ({}) {\n"
+                         "      try {\n"
+                         "        callback();\n"
+                         "      } catch (e) {\n"
+                         "      } finally {\n"
+                         "      }\n"
+                         "    }\n"
+                         "  }"
+                         "}\n"
+                         "function g() {\n"
+                         "  for (a in { x:5 })\n"
+                         "    f();\n"
+                         "}\n"
+                          "\n"
+                         "with({})\n"
+                         " f();\n");
+
+  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 (jerry_value_has_abort_flag (res));
+
+  jerry_release_value (res);
+  jerry_release_value (parsed_code_val);
+
+  /* Test flag overwrites. */
+  jerry_value_t value = jerry_create_string ((jerry_char_t *) "Error description");
+  TEST_ASSERT (!jerry_value_has_abort_flag (value));
+  TEST_ASSERT (!jerry_value_has_error_flag (value));
+
+  jerry_value_set_abort_flag (&value);
+  TEST_ASSERT (jerry_value_has_abort_flag (value));
+  TEST_ASSERT (jerry_value_has_error_flag (value));
+
+  jerry_value_set_error_flag (&value);
+  TEST_ASSERT (!jerry_value_has_abort_flag (value));
+  TEST_ASSERT (jerry_value_has_error_flag (value));
+
+  jerry_value_set_abort_flag (&value);
+  TEST_ASSERT (jerry_value_has_abort_flag (value));
+  TEST_ASSERT (jerry_value_has_error_flag (value));
+
+  jerry_release_value (value);
+
+  jerry_cleanup ();
+  return 0;
+} /* main */