void
gjs_context_print_stack_stderr(GjsContext *context)
{
GString *str = g_string_new("");
g_string_append_printf(str, "== Stack trace for context %p ==\n", context);
gjs_context_print_stack_to_buffer(context, NULL, str);
g_printerr("%s\n", str->str);
g_string_free(str, TRUE);
}
/* define properties that JS Error() expose, such as
fileName, lineNumber and stack
*/
static void
define_error_properties(JSContext *context,
JSObject *obj)
{
JSStackFrame *frame;
JSScript *script;
jsbytecode *pc;
jsval v;
GString *stack;
const char *filename;
GjsContext *gjs_context;
/* find the JS frame that triggered the error */
frame = NULL;
while (JS_FrameIterator(context, &frame)) {
if (JS_IsScriptFrame(context, frame))
break;
}
/* someone called gjs_throw at top of the stack?
well, no stack in that case
*/
if (!frame)
return;
script = JS_GetFrameScript(context, frame);
pc = JS_GetFramePC(context, frame);
stack = g_string_new(NULL);
gjs_context = JS_GetContextPrivate(context);
gjs_context_print_stack_to_buffer(gjs_context, frame, stack);
if (gjs_string_from_utf8(context, stack->str, stack->len, &v))
JS_DefineProperty(context, obj, "stack", v,
NULL, NULL, JSPROP_ENUMERATE);
filename = JS_GetScriptFilename(context, script);
if (gjs_string_from_filename(context, filename, -1, &v))
JS_DefineProperty(context, obj, "fileName", v,
NULL, NULL, JSPROP_ENUMERATE);
v = INT_TO_JSVAL(JS_PCToLineNumber(context, script, pc));
JS_DefineProperty(context, obj, "lineNumber", v,
NULL, NULL, JSPROP_ENUMERATE);
g_string_free(stack, TRUE);
}
