DispatchResponse::Status UberDispatcher::dispatch()

in lib/Debugger.Protocol/Generated/protocol/Protocol.cpp [771:823]
49 lines of code
14 McCabe index (conditional complexity)

DispatchResponse::Status UberDispatcher::dispatch(std::unique_ptr<Value> parsedMessage, int* outCallId, String* outMethod)
{
    if (!parsedMessage) {
        reportProtocolErrorTo(m_frontendChannel, DispatchResponse::kParseError, "Message must be a valid JSON");
        return DispatchResponse::kError;
    }
    std::unique_ptr<protocol::DictionaryValue> messageObject = DictionaryValue::cast(std::move(parsedMessage));
    if (!messageObject) {
        reportProtocolErrorTo(m_frontendChannel, DispatchResponse::kInvalidRequest, "Message must be an object");
        return DispatchResponse::kError;
    }

    int callId = 0;
    protocol::Value* callIdValue = messageObject->get("id");
    bool success = callIdValue && callIdValue->asInteger(&callId);
    if (outCallId)
        *outCallId = callId;
    if (!success) {
        reportProtocolErrorTo(m_frontendChannel, DispatchResponse::kInvalidRequest, "Message must have integer 'id' property");
        return DispatchResponse::kError;
    }

    protocol::Value* methodValue = messageObject->get("method");
    String method;
    success = methodValue && methodValue->asString(&method);
    if (outMethod)
        *outMethod = method;
    if (!success) {
        reportProtocolErrorTo(m_frontendChannel, callId, DispatchResponse::kInvalidRequest, "Message must have string 'method' property", nullptr);
        return DispatchResponse::kError;
    }

    HashMap<String, String>::iterator redirectIt = m_redirects.find(method);
    if (redirectIt != m_redirects.end())
        method = redirectIt->second;

    size_t dotIndex = StringUtil::find(method, ".");
    if (dotIndex == StringUtil::kNotFound) {
        if (m_fallThroughForNotFound)
            return DispatchResponse::kFallThrough;
        reportProtocolErrorTo(m_frontendChannel, callId, DispatchResponse::kMethodNotFound, "'" + method + "' wasn't found", nullptr);
        return DispatchResponse::kError;
    }
    String domain = StringUtil::substring(method, 0, dotIndex);
    auto it = m_dispatchers.find(domain);
    if (it == m_dispatchers.end()) {
        if (m_fallThroughForNotFound)
            return DispatchResponse::kFallThrough;
        reportProtocolErrorTo(m_frontendChannel, callId, DispatchResponse::kMethodNotFound, "'" + method + "' wasn't found", nullptr);
        return DispatchResponse::kError;
    }
    return it->second->dispatch(callId, method, std::move(messageObject));
}