use clang-tidy to readability-make-member-function-const (#16309)

* use clang-tidy to readability-make-member-function-const

* Code review comments - remove some of the consts that are not conceptually correct

* Undo CHIPTLV changes - method seems to use class members

* Update const compile for LWIP platforms

* Restyle

* Fix mbedos build

* Fix one more const to make telink compile

src/access/examples/ExampleAccessControlDelegate.cpp

@@ -129,7 +129,7 @@ class SubjectStorage
     }
 
 public:
-    CHIP_ERROR Serialize(chip::TLV::TLVWriter & writer) { return writer.Put(chip::TLV::AnonymousTag(), mNode); }
+    CHIP_ERROR Serialize(chip::TLV::TLVWriter & writer) const { return writer.Put(chip::TLV::AnonymousTag(), mNode); }
 
     CHIP_ERROR Deserialize(chip::TLV::TLVReader & reader)
     {
@@ -193,7 +193,7 @@ class TargetStorage
     }
 
 public:
-    CHIP_ERROR Serialize(chip::TLV::TLVWriter & writer)
+    CHIP_ERROR Serialize(chip::TLV::TLVWriter & writer) const
     {
         ReturnErrorOnFailure(writer.Put(chip::TLV::AnonymousTag(), mCluster));
         return writer.Put(chip::TLV::AnonymousTag(), mDeviceType);

src/app/CASESessionManager.cpp

@@ -109,17 +109,17 @@ CHIP_ERROR CASESessionManager::GetPeerAddress(PeerId peerId, Transport::PeerAddr
     return CHIP_NO_ERROR;
 }
 
-OperationalDeviceProxy * CASESessionManager::FindSession(const SessionHandle & session)
+OperationalDeviceProxy * CASESessionManager::FindSession(const SessionHandle & session) const
 {
     return mConfig.devicePool->FindDevice(session);
 }
 
-OperationalDeviceProxy * CASESessionManager::FindExistingSession(PeerId peerId)
+OperationalDeviceProxy * CASESessionManager::FindExistingSession(PeerId peerId) const
 {
     return mConfig.devicePool->FindDevice(peerId);
 }
 
-void CASESessionManager::ReleaseSession(OperationalDeviceProxy * session)
+void CASESessionManager::ReleaseSession(OperationalDeviceProxy * session) const
 {
     if (session != nullptr)
     {

src/app/CASESessionManager.h

@@ -75,7 +75,7 @@ class CASESessionManager
     CHIP_ERROR FindOrEstablishSession(PeerId peerId, Callback::Callback<OnDeviceConnected> * onConnection,
                                       Callback::Callback<OnDeviceConnectionFailure> * onFailure);
 
-    OperationalDeviceProxy * FindExistingSession(PeerId peerId);
+    OperationalDeviceProxy * FindExistingSession(PeerId peerId) const;
 
     void ReleaseSession(PeerId peerId);
 
@@ -94,8 +94,8 @@ class CASESessionManager
     CHIP_ERROR GetPeerAddress(PeerId peerId, Transport::PeerAddress & addr);
 
 private:
-    OperationalDeviceProxy * FindSession(const SessionHandle & session);
-    void ReleaseSession(OperationalDeviceProxy * device);
+    OperationalDeviceProxy * FindSession(const SessionHandle & session) const;
+    void ReleaseSession(OperationalDeviceProxy * device) const;
 
     CASESessionManagerConfig mConfig;
 };

src/app/DataVersionFilter.h

@@ -32,7 +32,7 @@ struct DataVersionFilter
 
     DataVersionFilter() {}
 
-    bool IsValidDataVersionFilter()
+    bool IsValidDataVersionFilter() const
     {
         return (mEndpointId != kInvalidEndpointId) && (mClusterId != kInvalidClusterId) && (mDataVersion.HasValue());
     }

src/app/EventManagement.cpp

@@ -870,7 +870,7 @@ CHIP_ERROR EventManagement::EvictEvent(CHIPCircularTLVBuffer & apBuffer, void *
     return CHIP_END_OF_TLV;
 }
 
-void EventManagement::SetScheduledEventInfo(EventNumber & aEventNumber, uint32_t & aInitialWrittenEventBytes)
+void EventManagement::SetScheduledEventInfo(EventNumber & aEventNumber, uint32_t & aInitialWrittenEventBytes) const
 {
 #if !CHIP_SYSTEM_CONFIG_NO_LOCKING
     ScopedLock lock(sInstance);

src/app/EventManagement.h

@@ -98,7 +98,7 @@ class CircularEventBuffer : public TLV::CHIPCircularTLVBuffer
     CircularEventBuffer * GetNextCircularEventBuffer() { return mpNext; }
 
     void SetRequiredSpaceforEvicted(size_t aRequiredSpace) { mRequiredSpaceForEvicted = aRequiredSpace; }
-    size_t GetRequiredSpaceforEvicted() { return mRequiredSpaceForEvicted; }
+    size_t GetRequiredSpaceforEvicted() const { return mRequiredSpaceForEvicted; }
 
     ~CircularEventBuffer() override = default;
 
@@ -349,7 +349,7 @@ class EventManagement
      *
      * @return EventNumber most recently vended event Number for that event priority
      */
-    EventNumber GetLastEventNumber() { return mLastEventNumber; }
+    EventNumber GetLastEventNumber() const { return mLastEventNumber; }
 
     /**
      * @brief
@@ -360,7 +360,7 @@ class EventManagement
     /**
      *  Logger would save last logged event number and initial written event bytes number into schedule event number array
      */
-    void SetScheduledEventInfo(EventNumber & aEventNumber, uint32_t & aInitialWrittenEventBytes);
+    void SetScheduledEventInfo(EventNumber & aEventNumber, uint32_t & aInitialWrittenEventBytes) const;
 
 private:
     /**

src/app/InteractionModelEngine.h

@@ -129,7 +129,7 @@ class InteractionModelEngine : public Messaging::ExchangeDelegate, public Comman
     /**
      * The Magic number of this InteractionModelEngine, the magic number is set during Init()
      */
-    uint32_t GetMagicNumber() { return mMagic; }
+    uint32_t GetMagicNumber() const { return mMagic; }
 
     reporting::Engine & GetReportingEngine() { return mReportingEngine; }
 

src/app/ReadHandler.cpp

@@ -273,7 +273,7 @@ CHIP_ERROR ReadHandler::OnMessageReceived(Messaging::ExchangeContext * apExchang
     return err;
 }
 
-bool ReadHandler::IsFromSubscriber(Messaging::ExchangeContext & apExchangeContext)
+bool ReadHandler::IsFromSubscriber(Messaging::ExchangeContext & apExchangeContext) const
 {
     return (IsType(InteractionType::Subscribe) &&
             GetInitiatorNodeId() == apExchangeContext.GetSessionHandle()->AsSecureSession()->GetPeerNodeId() &&

src/app/ReadHandler.h

@@ -126,7 +126,7 @@ class ReadHandler : public Messaging::ExchangeDelegate
     /**
      *  Returns whether this ReadHandler represents a subscription that was created by the other side of the provided exchange.
      */
-    bool IsFromSubscriber(Messaging::ExchangeContext & apExchangeContext);
+    bool IsFromSubscriber(Messaging::ExchangeContext & apExchangeContext) const;
 
     bool IsReportable() const { return mState == HandlerState::GeneratingReports && !mHoldReport && (mDirty || !mHoldSync); }
     bool IsGeneratingReports() const { return mState == HandlerState::GeneratingReports; }
@@ -145,12 +145,12 @@ class ReadHandler : public Messaging::ExchangeDelegate
     bool CheckEventClean(EventManagement & aEventManager);
 
     bool IsType(InteractionType type) const { return (mInteractionType == type); }
-    bool IsChunkedReport() { return mIsChunkedReport; }
-    bool IsPriming() { return mIsPrimingReports; }
+    bool IsChunkedReport() const { return mIsChunkedReport; }
+    bool IsPriming() const { return mIsPrimingReports; }
     bool IsActiveSubscription() const { return mActiveSubscription; }
     bool IsFabricFiltered() const { return mIsFabricFiltered; }
     CHIP_ERROR OnSubscribeRequest(Messaging::ExchangeContext * apExchangeContext, System::PacketBufferHandle && aPayload);
-    void GetSubscriptionId(uint64_t & aSubscriptionId) { aSubscriptionId = mSubscriptionId; }
+    void GetSubscriptionId(uint64_t & aSubscriptionId) const { aSubscriptionId = mSubscriptionId; }
     AttributePathExpandIterator * GetAttributePathExpandIterator() { return &mAttributePathExpandIterator; }
     void SetDirty()
     {
@@ -161,7 +161,7 @@ class ReadHandler : public Messaging::ExchangeDelegate
         mAttributeEncoderState       = AttributeValueEncoder::AttributeEncodeState();
     }
     void ClearDirty() { mDirty = false; }
-    bool IsDirty() { return mDirty; }
+    bool IsDirty() const { return mDirty; }
     NodeId GetInitiatorNodeId() const { return mInitiatorNodeId; }
     FabricIndex GetAccessingFabricIndex() const { return mSubjectDescriptor.fabricIndex; }
 
@@ -175,7 +175,7 @@ class ReadHandler : public Messaging::ExchangeDelegate
 
     const AttributeValueEncoder::AttributeEncodeState & GetAttributeEncodeState() const { return mAttributeEncoderState; }
     void SetAttributeEncodeState(const AttributeValueEncoder::AttributeEncodeState & aState) { mAttributeEncoderState = aState; }
-    uint32_t GetLastWrittenEventsBytes() { return mLastWrittenEventsBytes; }
+    uint32_t GetLastWrittenEventsBytes() const { return mLastWrittenEventsBytes; }
     CHIP_ERROR SendStatusReport(Protocols::InteractionModel::Status aStatus);
 
 private:

src/app/reporting/Engine.h

@@ -118,7 +118,7 @@ class Engine
         }
     }
 
-    uint32_t GetNumReportsInFlight() { return mNumReportsInFlight; }
+    uint32_t GetNumReportsInFlight() const { return mNumReportsInFlight; }
 
     void ScheduleUrgentEventDeliverySync();
 

src/app/server/Dnssd.h

@@ -45,13 +45,13 @@ class DLL_EXPORT DnssdServer
     void SetSecuredPort(uint16_t port) { mSecuredPort = port; }
 
     /// Gets the secure Matter port
-    uint16_t GetSecuredPort() { return mSecuredPort; }
+    uint16_t GetSecuredPort() const { return mSecuredPort; }
 
     /// Sets the unsecure Matter port
     void SetUnsecuredPort(uint16_t port) { mUnsecuredPort = port; }
 
     /// Gets the unsecure Matter port
-    uint16_t GetUnsecuredPort() { return mUnsecuredPort; }
+    uint16_t GetUnsecuredPort() const { return mUnsecuredPort; }
 
     /// Sets the interface id used for advertising
     void SetInterfaceId(Inet::InterfaceId interfaceId) { mInterfaceId = interfaceId; }
@@ -63,7 +63,7 @@ class DLL_EXPORT DnssdServer
     void SetDiscoveryTimeoutSecs(int16_t secs) { mDiscoveryTimeoutSecs = secs; }
 
     /// Gets the factory-new state commissionable node discovery timeout
-    int16_t GetDiscoveryTimeoutSecs() { return mDiscoveryTimeoutSecs; }
+    int16_t GetDiscoveryTimeoutSecs() const { return mDiscoveryTimeoutSecs; }
 
     //
     // Override the referenced fabric table from the default that is present

src/app/util/binding-table.h

@@ -50,11 +50,11 @@ class BindingTable
 
         Iterator operator++();
 
-        bool operator==(const Iterator & rhs) { return mIndex == rhs.mIndex; }
+        bool operator==(const Iterator & rhs) const { return mIndex == rhs.mIndex; }
 
-        bool operator!=(const Iterator & rhs) { return mIndex != rhs.mIndex; }
+        bool operator!=(const Iterator & rhs) const { return mIndex != rhs.mIndex; }
 
-        uint8_t GetIndex() { return mIndex; }
+        uint8_t GetIndex() const { return mIndex; }
 
     private:
         BindingTable * mTable;
@@ -71,7 +71,7 @@ class BindingTable
 
     // Returns the number of active entries in the binding table.
     // *NOTE* The function does not return the capacity of the binding table.
-    uint8_t Size() { return mSize; }
+    uint8_t Size() const { return mSize; }
 
     Iterator begin();
 

src/ble/BleLayer.cpp

@@ -94,7 +94,7 @@ class BleEndPointPool
         return nullptr;
     }
 
-    BLEEndPoint * Find(BLE_CONNECTION_OBJECT c)
+    BLEEndPoint * Find(BLE_CONNECTION_OBJECT c) const
     {
         if (c == BLE_CONNECTION_UNINITIALIZED)
         {

src/ble/BtpEngine.h

@@ -108,14 +108,14 @@ class BtpEngine
     inline void SetTxFragmentSize(uint16_t size) { mTxFragmentSize = size; }
     inline void SetRxFragmentSize(uint16_t size) { mRxFragmentSize = size; }
 
-    uint16_t GetRxFragmentSize() { return mRxFragmentSize; }
-    uint16_t GetTxFragmentSize() { return mTxFragmentSize; }
+    uint16_t GetRxFragmentSize() const { return mRxFragmentSize; }
+    uint16_t GetTxFragmentSize() const { return mTxFragmentSize; }
 
     SequenceNumber_t GetAndIncrementNextTxSeqNum();
     SequenceNumber_t GetAndRecordRxAckSeqNum();
 
-    inline SequenceNumber_t GetLastReceivedSequenceNumber() { return mRxNewestUnackedSeqNum; }
-    inline SequenceNumber_t GetNewestUnackedSentSequenceNumber() { return mTxNewestUnackedSeqNum; }
+    inline SequenceNumber_t GetLastReceivedSequenceNumber() const { return mRxNewestUnackedSeqNum; }
+    inline SequenceNumber_t GetNewestUnackedSentSequenceNumber() const { return mTxNewestUnackedSeqNum; }
 
     inline bool ExpectingAck() const { return mExpectingAck; }
 

src/controller/AutoCommissioner.cpp

@@ -209,7 +209,7 @@ CommissioningStage AutoCommissioner::GetNextCommissioningStage(CommissioningStag
     return CommissioningStage::kError;
 }
 
-EndpointId AutoCommissioner::GetEndpoint(const CommissioningStage & stage)
+EndpointId AutoCommissioner::GetEndpoint(const CommissioningStage & stage) const
 {
     switch (stage)
     {
@@ -249,7 +249,7 @@ CHIP_ERROR AutoCommissioner::StartCommissioning(DeviceCommissioner * commissione
     return CHIP_NO_ERROR;
 }
 
-Optional<System::Clock::Timeout> AutoCommissioner::GetCommandTimeout(CommissioningStage stage)
+Optional<System::Clock::Timeout> AutoCommissioner::GetCommandTimeout(CommissioningStage stage) const
 {
     // Per spec, all commands that are sent with the arm failsafe held need at least a 30s timeout.
     // Network clusters can indicate the time required to connect, so if we are connecting, use that time as long as it is > 30s.

src/controller/AutoCommissioner.h

@@ -49,8 +49,8 @@ class AutoCommissioner : public CommissioningDelegate
     ByteSpan GetPAI() const { return ByteSpan(mPAI, mPAILen); }
 
     CHIP_ERROR NOCChainGenerated(ByteSpan noc, ByteSpan icac, ByteSpan rcac, AesCcm128KeySpan ipk, NodeId adminSubject);
-    Optional<System::Clock::Timeout> GetCommandTimeout(CommissioningStage stage);
-    EndpointId GetEndpoint(const CommissioningStage & stage);
+    Optional<System::Clock::Timeout> GetCommandTimeout(CommissioningStage stage) const;
+    EndpointId GetEndpoint(const CommissioningStage & stage) const;
 
     DeviceCommissioner * mCommissioner                               = nullptr;
     CommissioneeDeviceProxy * mCommissioneeDeviceProxy               = nullptr;

src/controller/SetUpCodePairer.cpp

@@ -167,7 +167,7 @@ void SetUpCodePairer::OnDiscoveredDeviceOverBleError(void * appState, CHIP_ERROR
 }
 #endif // CONFIG_NETWORK_LAYER_BLE
 
-bool SetUpCodePairer::NodeMatchesCurrentFilter(const Dnssd::DiscoveredNodeData & nodeData)
+bool SetUpCodePairer::NodeMatchesCurrentFilter(const Dnssd::DiscoveredNodeData & nodeData) const
 {
     if (nodeData.commissioningMode == 0)
     {

src/controller/SetUpCodePairer.h

@@ -85,7 +85,7 @@ class DLL_EXPORT SetUpCodePairer
     static void OnDiscoveredDeviceOverBleError(void * appState, CHIP_ERROR err);
 #endif // CONFIG_NETWORK_LAYER_BLE
 
-    bool NodeMatchesCurrentFilter(const Dnssd::DiscoveredNodeData & nodeData);
+    bool NodeMatchesCurrentFilter(const Dnssd::DiscoveredNodeData & nodeData) const;
     Dnssd::DiscoveryFilter currentFilter;
 
     DeviceCommissioner * mCommissioner = nullptr;

src/credentials/DeviceAttestationVendorReserved.h

@@ -72,7 +72,7 @@ class DeviceAttestationVendorReservedDeconstructor
         return CHIP_NO_ERROR;
     }
 
-    size_t GetNumberOfElements() { return mNumVendorReservedData; }
+    size_t GetNumberOfElements() const { return mNumVendorReservedData; }
 
     /**
      *  @brief Return next VendorReserved element. PrepareToReadVendorReservedElements must be called first.
@@ -169,7 +169,7 @@ class DeviceAttestationVendorReservedConstructor
         return CHIP_NO_ERROR;
     }
 
-    size_t GetNumberOfElements() { return mNumEntriesUsed; }
+    size_t GetNumberOfElements() const { return mNumEntriesUsed; }
 
 private:
     /*

src/credentials/FabricTable.cpp

@@ -434,7 +434,7 @@ CHIP_ERROR FabricInfo::VerifyCredentials(const ByteSpan & noc, const ByteSpan &
 }
 
 CHIP_ERROR FabricInfo::GenerateDestinationID(const ByteSpan & ipk, const ByteSpan & random, NodeId destNodeId,
-                                             MutableByteSpan & destinationId)
+                                             MutableByteSpan & destinationId) const
 {
     constexpr uint16_t kSigmaParamRandomNumberSize = 32;
     constexpr size_t kDestinationMessageLen =

src/credentials/FabricTable.h

@@ -141,7 +141,7 @@ class DLL_EXPORT FabricInfo
     bool IsInitialized() const { return IsOperationalNodeId(mOperationalId.GetNodeId()); }
 
     CHIP_ERROR GenerateDestinationID(const ByteSpan & ipk, const ByteSpan & random, NodeId destNodeId,
-                                     MutableByteSpan & destinationId);
+                                     MutableByteSpan & destinationId) const;
 
     CHIP_ERROR MatchDestinationID(const ByteSpan & destinationId, const ByteSpan & initiatorRandom, const ByteSpan * ipkList,
                                   size_t ipkListEntries);

src/credentials/GroupDataProvider.h

@@ -87,7 +87,10 @@ class GroupDataProvider
         GroupId group_id = kUndefinedGroupId;
         // Set of group keys that generate operational group keys for use with this group
         KeysetId keyset_id = 0;
-        bool operator==(const GroupKey & other) { return this->group_id == other.group_id && this->keyset_id == other.keyset_id; }
+        bool operator==(const GroupKey & other) const
+        {
+            return this->group_id == other.group_id && this->keyset_id == other.keyset_id;
+        }
     };
 
     struct GroupEndpoint
@@ -99,7 +102,7 @@ class GroupDataProvider
         // Endpoint on the Node to which messages to this group may be forwarded
         EndpointId endpoint_id = kInvalidEndpointId;
 
-        bool operator==(const GroupEndpoint & other)
+        bool operator==(const GroupEndpoint & other) const
         {
             return this->group_id == other.group_id && this->endpoint_id == other.endpoint_id;
         }
@@ -217,8 +220,8 @@ class GroupDataProvider
     GroupDataProvider(const GroupDataProvider &) = delete;
     GroupDataProvider & operator=(const GroupDataProvider &) = delete;
 
-    uint16_t GetMaxGroupsPerFabric() { return mMaxGroupsPerFabric; }
-    uint16_t GetMaxGroupKeysPerFabric() { return mMaxGroupKeysPerFabric; }
+    uint16_t GetMaxGroupsPerFabric() const { return mMaxGroupsPerFabric; }
+    uint16_t GetMaxGroupKeysPerFabric() const { return mMaxGroupKeysPerFabric; }
 
     /**
      *  Initialize the GroupDataProvider, including possibly any persistent

src/credentials/GroupDataProviderImpl.cpp

@@ -291,7 +291,7 @@ struct FabricData : public PersistentData<kPersistentBufferMax>
     }
 
     // Remove the fabric from the fabrics' linked list
-    CHIP_ERROR Unregister(PersistentStorageDelegate * storage)
+    CHIP_ERROR Unregister(PersistentStorageDelegate * storage) const
     {
         FabricList fabric_list;
         CHIP_ERROR err = fabric_list.Load(storage);
@@ -334,7 +334,7 @@ struct FabricData : public PersistentData<kPersistentBufferMax>
     }
 
     // Check the fabric is registered in the fabrics' linked list
-    CHIP_ERROR Validate(PersistentStorageDelegate * storage)
+    CHIP_ERROR Validate(PersistentStorageDelegate * storage) const
     {
         FabricList fabric_list;
         ReturnErrorOnFailure(fabric_list.Load(storage));