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); }