/**
* Return an XPCLocaleCallbacks out of |cx|. Callers must know that
* |cx| has an XPCLocaleCallbacks; i.e., the checks in MaybeThis()
* would be pointless to run from the calling context.
*
* NB: If the returned XPCLocaleCallbacks hasn't yet been bound to a
* thread, then a side effect of calling This() is to bind it to the
* calling thread.
*/
static XPCLocaleCallbacks*
This(JSContext* cx)
{
XPCLocaleCallbacks* ths =
static_cast<XPCLocaleCallbacks*>(JS_GetLocaleCallbacks(cx));
ths->AssertThreadSafety();
return ths;
}
/**
* Return the XPCLocaleCallbacks that's hidden away in |cx|, or null
* if there isn't one. (This impl uses the locale callbacks struct
* to store away its per-context data.)
*
* NB: If the returned XPCLocaleCallbacks hasn't yet been bound to a
* thread, then a side effect of calling MaybeThis() is to bind it
* to the calling thread.
*/
static XPCLocaleCallbacks*
MaybeThis(JSContext* cx)
{
JSLocaleCallbacks* lc = JS_GetLocaleCallbacks(cx);
return (lc &&
lc->localeToUpperCase == LocaleToUpperCase &&
lc->localeToLowerCase == LocaleToLowerCase &&
lc->localeCompare == LocaleCompare &&
lc->localeToUnicode == LocaleToUnicode) ? This(cx) : nsnull;
}
/**
* Return the XPCLocaleCallbacks that's hidden away in |rt|. (This impl uses
* the locale callbacks struct to store away its per-runtime data.)
*/
static XPCLocaleCallbacks*
This(JSRuntime *rt)
{
// Locale information for |rt| was associated using xpc_LocalizeRuntime;
// assert and double-check this.
JSLocaleCallbacks* lc = JS_GetLocaleCallbacks(rt);
MOZ_ASSERT(lc);
MOZ_ASSERT(lc->localeToUpperCase == LocaleToUpperCase);
MOZ_ASSERT(lc->localeToLowerCase == LocaleToLowerCase);
MOZ_ASSERT(lc->localeCompare == LocaleCompare);
MOZ_ASSERT(lc->localeToUnicode == LocaleToUnicode);
XPCLocaleCallbacks* ths = static_cast<XPCLocaleCallbacks*>(lc);
ths->AssertThreadSafety();
return ths;
}