C++ Matcher::matches方法代码示例

std::list<const LLToast*> LLScreenChannel::findToasts(const Matcher& matcher)
{
	std::list<const LLToast*> res;

	// collect stored toasts
	for (std::vector<ToastElem>::iterator it = mStoredToastList.begin(); it
			!= mStoredToastList.end(); it++)
	{
		const LLToast* toast = it->getToast();
		if (toast && matcher.matches(toast->getNotification()))
		{
			res.push_back(toast);
		}
	}

	// collect displayed toasts
	for (std::vector<ToastElem>::iterator it = mToastList.begin(); it
			!= mToastList.end(); it++)
	{
		const LLToast* toast = it->getToast();
		if (toast && matcher.matches(toast->getNotification()))
		{
			res.push_back(toast);
		}
	}

	return res;
}

void LLScreenChannel::closeHiddenToasts(const Matcher& matcher)
{
	// since we can't guarantee that close toast operation doesn't change mToastList
	// we collect matched toasts that should be closed into separate list
	std::list<LLToast*> toasts;
	for (std::vector<ToastElem>::iterator it = mToastList.begin(); it
			!= mToastList.end(); it++)
	{
		LLToast* toast = it->getToast();
		// add to list valid toast that match to provided matcher criteria
		if (toast != NULL && !toast->isDead() && toast->getNotification() != NULL
				&& !toast->getVisible() && matcher.matches(toast->getNotification()))
		{
			toasts.push_back(toast);
		}
	}

	// close collected toasts
	for (std::list<LLToast*>::iterator it = toasts.begin(); it
			!= toasts.end(); it++)
	{
		LLToast* toast = *it;
		toast->closeFloater();
	}
}

void Scanner::doUntil(Matcher const & matcher, std::function<void(char)> before, std::function<void(char)> after)
{
	if( ! is ) return;

	int g;
	while( (g = is.get()) != std::istream::traits_type::eof() ) {
		char ch = g;
		before(ch);
		if( matcher.matches(ch) ) {
			is.putback(ch);
			break;
		}
		after(ch);
	}
}

void LLNotifyBoxView::purgeMessagesMatching(const Matcher& matcher)
{
	// Make a *copy* of the child list to iterate over 
	// since we'll be removing items from the real list as we go.
	LLView::child_list_t notification_queue(*getChildList());
	for(LLView::child_list_iter_t iter = notification_queue.begin();
		iter != notification_queue.end();
		iter++)
	{
		if (isGroupNotifyBox(*iter))
			continue;

		LLNotifyBox* notification = static_cast<LLNotifyBox*>(*iter);
		if (matcher.matches(notification->getNotification()))
		{
			removeChild(notification);
		}
	}
}

//.........这里部分代码省略.........
            while (i.more()) {
                BSONElement e = i.next();
                if (str::equals("$all", e.fieldName())) {
                    continue;
                } else if (str::equals("$ownOps", e.fieldName())) {
                    continue;
                }

                b.append(e);
            }
            filter = b.obj();
        }

        std::vector<BSONObj> inprogInfos;
        BSONArrayBuilder inprogBuilder(result.subarrayStart("inprog"));

        for (ServiceContext::LockedClientsCursor cursor(txn->getClient()->getServiceContext());
             Client* client = cursor.next();) {
            invariant(client);

            stdx::lock_guard<Client> lk(*client);

            if (ownOpsOnly &&
                !AuthorizationSession::get(txn->getClient())->isCoauthorizedWithClient(client)) {
                continue;
            }

            const OperationContext* opCtx = client->getOperationContext();

            if (!includeAll) {
                // Skip over inactive connections.
                if (!opCtx)
                    continue;
            }

            BSONObjBuilder infoBuilder;

            // The client information
            client->reportState(infoBuilder);

            const auto& clientMetadata =
                ClientMetadataIsMasterState::get(client).getClientMetadata();
            if (clientMetadata) {
                auto appName = clientMetadata.get().getApplicationName();
                if (!appName.empty()) {
                    infoBuilder.append("appName", appName);
                }
            }

            // Operation context specific information
            infoBuilder.appendBool("active", static_cast<bool>(opCtx));
            if (opCtx) {
                infoBuilder.append("opid", opCtx->getOpID());
                if (opCtx->isKillPending()) {
                    infoBuilder.append("killPending", true);
                }

                CurOp::get(opCtx)->reportState(&infoBuilder);

                // LockState
                Locker::LockerInfo lockerInfo;
                opCtx->lockState()->getLockerInfo(&lockerInfo);
                fillLockerInfo(lockerInfo, infoBuilder);
            }

            // If we want to include all results or if the filter is empty, then we can append
            // straight to the inprogBuilder, but otherwise we should run the filter Matcher
            // outside this loop so we don't lock the ServiceContext while matching - in some cases
            // this can cause deadlocks.
            if (includeAll || filter.isEmpty()) {
                inprogBuilder.append(infoBuilder.obj());
            } else {
                inprogInfos.emplace_back(infoBuilder.obj());
            }
        }

        if (!inprogInfos.empty()) {
            // We use ExtensionsCallbackReal here instead of ExtensionsCallbackNoop in order to
            // support the use case of having a $where filter with currentOp. However, since we
            // don't have a collection, we pass in a fake collection name (and this is okay,
            // because $where parsing only relies on the database part of the namespace).
            const NamespaceString fakeNS(db, "$dummyNamespaceForCurrop");
            const Matcher matcher(filter, ExtensionsCallbackReal(txn, &fakeNS), nullptr);

            for (const auto& info : inprogInfos) {
                if (matcher.matches(info)) {
                    inprogBuilder.append(info);
                }
            }
        }
        inprogBuilder.done();

        if (lockedForWriting()) {
            result.append("fsyncLock", true);
            result.append("info",
                          "use db.fsyncUnlock() to terminate the fsync write/snapshot lock");
        }

        return true;
    }

    bool run(OperationContext* txn,
             const std::string& db,
             BSONObj& cmdObj,
             int options,
             std::string& errmsg,
             BSONObjBuilder& result) final {
        const bool includeAll = cmdObj["$all"].trueValue();
        const bool ownOpsOnly = cmdObj["$ownOps"].trueValue();

        // Filter the output
        BSONObj filter;
        {
            BSONObjBuilder b;
            BSONObjIterator i(cmdObj);
            invariant(i.more());
            i.next();  // skip {currentOp: 1} which is required to be the first element
            while (i.more()) {
                BSONElement e = i.next();
                if (str::equals("$all", e.fieldName())) {
                    continue;
                } else if (str::equals("$ownOps", e.fieldName())) {
                    continue;
                }

                b.append(e);
            }
            filter = b.obj();
        }

        // We use ExtensionsCallbackReal here instead of ExtensionsCallbackNoop in order to support
        // the use case of having a $where filter with currentOp. However, since we don't have a
        // collection, we pass in a fake collection name (and this is okay, because $where parsing
        // only relies on the database part of the namespace).
        const NamespaceString fakeNS(db, "$cmd");
        const CollatorInterface* collator = nullptr;
        const Matcher matcher(filter, ExtensionsCallbackReal(txn, &fakeNS), collator);

        BSONArrayBuilder inprogBuilder(result.subarrayStart("inprog"));

        for (ServiceContext::LockedClientsCursor cursor(txn->getClient()->getServiceContext());
             Client* client = cursor.next();) {
            invariant(client);

            stdx::lock_guard<Client> lk(*client);

            if (ownOpsOnly &&
                !AuthorizationSession::get(txn->getClient())->isCoauthorizedWithClient(client)) {
                continue;
            }

            const OperationContext* opCtx = client->getOperationContext();

            if (!includeAll) {
                // Skip over inactive connections.
                if (!opCtx)
                    continue;
            }

            BSONObjBuilder infoBuilder;

            // The client information
            client->reportState(infoBuilder);

            // Operation context specific information
            infoBuilder.appendBool("active", static_cast<bool>(opCtx));
            if (opCtx) {
                infoBuilder.append("opid", opCtx->getOpID());
                if (opCtx->isKillPending()) {
                    infoBuilder.append("killPending", true);
                }

                CurOp::get(opCtx)->reportState(&infoBuilder);

                // LockState
                Locker::LockerInfo lockerInfo;
                opCtx->lockState()->getLockerInfo(&lockerInfo);
                fillLockerInfo(lockerInfo, infoBuilder);
            }

            infoBuilder.done();

            const BSONObj info = infoBuilder.obj();

            if (includeAll || matcher.matches(info)) {
                inprogBuilder.append(info);
            }
        }

        inprogBuilder.done();

        if (lockedForWriting()) {
            result.append("fsyncLock", true);
            result.append("info",
                          "use db.fsyncUnlock() to terminate the fsync write/snapshot lock");
        }

        return true;
    }