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

jerry-core/ecma/builtin-objects/ecma-builtin-function.c

@@ -21,8 +21,12 @@
 #include "ecma-function-object.h"
 #include "ecma-lex-env.h"
 #include "ecma-try-catch-macro.h"
-#include "lit-magic-strings.h"
 #include "js-parser.h"
+#include "lit-magic-strings.h"
+
+#ifdef JERRY_ENABLE_LINE_INFO
+#include "jcontext.h"
+#endif /* JERRY_ENABLE_LINE_INFO */
 
 #define ECMA_BUILTINS_INTERNAL
 #include "ecma-builtins-internal.h"
@@ -155,6 +159,10 @@ ecma_builtin_function_dispatch_construct (const ecma_value_t *arguments_list_p,
   ECMA_STRING_TO_UTF8_STRING (arguments_str_p, arguments_buffer_p, arguments_buffer_size);
   ECMA_STRING_TO_UTF8_STRING (function_body_str_p, function_body_buffer_p, function_body_buffer_size);
 
+#ifdef JERRY_ENABLE_LINE_INFO
+  JERRY_CONTEXT (resource_name) = ecma_make_magic_string_value (LIT_MAGIC_STRING__EMPTY);
+#endif /* JERRY_ENABLE_LINE_INFO */
+
   ecma_compiled_code_t *bytecode_data_p = NULL;
 
   ecma_value_t ret_value = parser_parse_script (arguments_buffer_p,

jerry-core/ecma/operations/ecma-eval.c

@@ -23,6 +23,10 @@
 #include "js-parser.h"
 #include "vm.h"
 
+#ifdef JERRY_ENABLE_LINE_INFO
+#include "jcontext.h"
+#endif /* JERRY_ENABLE_LINE_INFO */
+
 /** \addtogroup ecma ECMA
  * @{
  *
@@ -88,6 +92,10 @@ ecma_op_eval_chars_buffer (const lit_utf8_byte_t *code_p, /**< code characters b
 
   bool is_strict_call = (is_direct && is_called_from_strict_mode_code);
 
+#ifdef JERRY_ENABLE_LINE_INFO
+  JERRY_CONTEXT (resource_name) = ecma_make_magic_string_value (LIT_MAGIC_STRING__EMPTY);
+#endif /* JERRY_ENABLE_LINE_INFO */
+
   ecma_value_t parse_status = parser_parse_script (NULL,
                                                    0,
                                                    code_p,

jerry-core/ecma/operations/ecma-exceptions.c

@@ -24,6 +24,10 @@
 #include "jcontext.h"
 #include "jrt.h"
 
+#ifdef JERRY_ENABLE_LINE_INFO
+#include "vm.h"
+#endif /* JERRY_ENABLE_LINE_INFO */
+
 /** \addtogroup ecma ECMA
  * @{
  *
@@ -134,6 +138,24 @@ ecma_new_standard_error (ecma_standard_error_t error_type) /**< native error typ
 
   ((ecma_extended_object_t *) new_error_obj_p)->u.class_prop.class_id = LIT_MAGIC_STRING_ERROR_UL;
 
+#ifdef JERRY_ENABLE_LINE_INFO
+  /* The "stack" identifier is not a magic string. */
+  const char *stack_id_p = "stack";
+
+  ecma_string_t *stack_str_p = ecma_new_ecma_string_from_utf8 ((const lit_utf8_byte_t *) stack_id_p, 5);
+
+  ecma_property_value_t *prop_value_p = ecma_create_named_data_property (new_error_obj_p,
+                                                                         stack_str_p,
+                                                                         ECMA_PROPERTY_CONFIGURABLE_WRITABLE,
+                                                                         NULL);
+  ecma_deref_ecma_string (stack_str_p);
+
+  ecma_value_t backtrace_value = vm_get_backtrace (0);
+
+  prop_value_p->value = backtrace_value;
+  ecma_deref_object (ecma_get_object_from_value (backtrace_value));
+#endif /* JERRY_ENABLE_LINE_INFO */
+
   return new_error_obj_p;
 } /* ecma_new_standard_error */