JSBool
js_ReportUncaughtException(JSContext *cx)
{
jsval exn;
JSObject *exnObject;
jsval roots[5];
JSTempValueRooter tvr;
JSErrorReport *reportp, report;
JSString *str;
const char *bytes;
JSBool ok;
if (!JS_IsExceptionPending(cx))
return JS_TRUE;
if (!JS_GetPendingException(cx, &exn))
return JS_FALSE;
memset(roots, 0, sizeof roots);
JS_PUSH_TEMP_ROOT(cx, JS_ARRAY_LENGTH(roots), roots, &tvr);
/*
* Because js_ValueToString below could error and an exception object
* could become unrooted, we must root exnObject. Later, if exnObject is
* non-null, we need to root other intermediates, so allocate an operand
* stack segment to protect all of these values.
*/
if (JSVAL_IS_PRIMITIVE(exn)) {
exnObject = NULL;
} else {
exnObject = JSVAL_TO_OBJECT(exn);
roots[0] = exn;
}
JS_ClearPendingException(cx);
reportp = js_ErrorFromException(cx, exn);
/* XXX L10N angels cry once again (see also jsemit.c, /L10N gaffes/) */
str = js_ValueToString(cx, exn);
if (!str) {
bytes = "unknown (can't convert to string)";
} else {
roots[1] = STRING_TO_JSVAL(str);
bytes = js_GetStringBytes(cx, str);
if (!bytes) {
ok = JS_FALSE;
goto out;
}
}
ok = JS_TRUE;
if (!reportp &&
exnObject &&
OBJ_GET_CLASS(cx, exnObject) == &js_ErrorClass) {
const char *filename;
uint32 lineno;
ok = JS_GetProperty(cx, exnObject, js_message_str, &roots[2]);
if (!ok)
goto out;
if (JSVAL_IS_STRING(roots[2])) {
bytes = js_GetStringBytes(cx, JSVAL_TO_STRING(roots[2]));
if (!bytes) {
ok = JS_FALSE;
goto out;
}
}
ok = JS_GetProperty(cx, exnObject, js_fileName_str, &roots[3]);
if (!ok)
goto out;
str = js_ValueToString(cx, roots[3]);
if (!str) {
ok = JS_FALSE;
goto out;
}
filename = StringToFilename(cx, str);
if (!filename) {
ok = JS_FALSE;
goto out;
}
ok = JS_GetProperty(cx, exnObject, js_lineNumber_str, &roots[4]);
if (!ok)
goto out;
lineno = js_ValueToECMAUint32 (cx, &roots[4]);
ok = !JSVAL_IS_NULL(roots[4]);
if (!ok)
goto out;
reportp = &report;
memset(&report, 0, sizeof report);
report.filename = filename;
report.lineno = (uintN) lineno;
}
if (!reportp) {
JS_ReportErrorNumber(cx, js_GetErrorMessage, NULL,
JSMSG_UNCAUGHT_EXCEPTION, bytes);
} else {
/* Flag the error as an exception. */
reportp->flags |= JSREPORT_EXCEPTION;
/* Pass the exception object. */
JS_SetPendingException(cx, exn);
js_ReportErrorAgain(cx, bytes, reportp);
JS_ClearPendingException(cx);
}
out:
JS_POP_TEMP_ROOT(cx, &tvr);
return ok;
}
JSBool
js_ReportUncaughtException(JSContext *cx)
{
jsval exn, *vp;
JSObject *exnObject;
void *mark;
JSErrorReport *reportp, report;
JSString *str;
const char *bytes;
JSBool ok;
if (!JS_IsExceptionPending(cx))
return JS_TRUE;
if (!JS_GetPendingException(cx, &exn))
return JS_FALSE;
/*
* Because js_ValueToString below could error and an exception object
* could become unrooted, we must root exnObject. Later, if exnObject is
* non-null, we need to root other intermediates, so allocate an operand
* stack segment to protect all of these values.
*/
if (JSVAL_IS_PRIMITIVE(exn)) {
exnObject = NULL;
vp = NULL;
#ifdef __GNUC__ /* suppress bogus gcc warnings */
mark = NULL;
#endif
} else {
exnObject = JSVAL_TO_OBJECT(exn);
vp = js_AllocStack(cx, 5, &mark);
if (!vp) {
ok = JS_FALSE;
goto out;
}
vp[0] = exn;
}
#if JS_HAS_ERROR_EXCEPTIONS
reportp = js_ErrorFromException(cx, exn);
#else
reportp = NULL;
#endif
/* XXX L10N angels cry once again (see also jsemit.c, /L10N gaffes/) */
str = js_ValueToString(cx, exn);
if (!str) {
bytes = "unknown (can't convert to string)";
} else {
if (vp)
vp[1] = STRING_TO_JSVAL(str);
bytes = js_GetStringBytes(str);
}
ok = JS_TRUE;
if (!reportp &&
exnObject &&
OBJ_GET_CLASS(cx, exnObject) == &ExceptionClass) {
const char *filename;
uint32 lineno;
ok = JS_GetProperty(cx, exnObject, js_message_str, &vp[2]);
if (!ok)
goto out;
if (JSVAL_IS_STRING(vp[2]))
bytes = JS_GetStringBytes(JSVAL_TO_STRING(vp[2]));
ok = JS_GetProperty(cx, exnObject, js_filename_str, &vp[3]);
if (!ok)
goto out;
str = js_ValueToString(cx, vp[3]);
if (!str) {
ok = JS_FALSE;
goto out;
}
filename = StringToFilename(cx, str);
ok = JS_GetProperty(cx, exnObject, js_lineno_str, &vp[4]);
if (!ok)
goto out;
ok = js_ValueToECMAUint32 (cx, vp[4], &lineno);
if (!ok)
goto out;
reportp = &report;
memset(&report, 0, sizeof report);
report.filename = filename;
report.lineno = (uintN) lineno;
}
if (!reportp) {
JS_ReportErrorNumber(cx, js_GetErrorMessage, NULL,
JSMSG_UNCAUGHT_EXCEPTION, bytes);
} else {
/* Flag the error as an exception. */
reportp->flags |= JSREPORT_EXCEPTION;
js_ReportErrorAgain(cx, bytes, reportp);
}
JS_ClearPendingException(cx);
out:
if (exnObject)
js_FreeStack(cx, mark);
return ok;
}