Additional support for HookDefinition, HookState, ImportVLSequence at fixPreviousTxnID Amendment

include/xrpl/protocol/detail/ledger_entries.macro

@@ -89,6 +89,8 @@ LEDGER_ENTRY(ltHOOK_DEFINITION, 'D', HookDefinition, hook_definition, ({
     {sfReferenceCount,       soeREQUIRED},
     {sfFee,                  soeREQUIRED},
     {sfHookCallbackFee,      soeOPTIONAL},
+    {sfPreviousTxnID,        soeOPTIONAL},
+    {sfPreviousTxnLgrSeq,    soeOPTIONAL},
 }))
 
 /** A ledger object containing a hook-emitted transaction from a previous hook execution.
@@ -118,6 +120,8 @@ LEDGER_ENTRY(ltHOOK, 'H', Hook, hook, ({
 LEDGER_ENTRY(ltIMPORT_VLSEQ, 0x0049, ImportVLSequence, import_vlseq, ({
     {sfPublicKey,            soeREQUIRED},
     {sfImportSequence,       soeREQUIRED},
+    {sfPreviousTxnID,        soeOPTIONAL},
+    {sfPreviousTxnLgrSeq,    soeOPTIONAL},
 }))
 
 /** The ledger object which tracks the current negative UNL state.
@@ -439,6 +443,8 @@ LEDGER_ENTRY(ltHOOK_STATE, 0x0076, HookState, hook_state, ({
     {sfOwnerNode,            soeREQUIRED},
     {sfHookStateKey,         soeREQUIRED},
     {sfHookStateData,        soeREQUIRED},
+    {sfPreviousTxnID,        soeOPTIONAL},
+    {sfPreviousTxnLgrSeq,    soeOPTIONAL},
 }))
 
 /** A ledger object describing a single unidirectional XRP payment channel.

src/libxrpl/protocol/STLedgerEntry.cpp

@@ -135,8 +135,16 @@ STLedgerEntry::getJson(JsonOptions options) const
 bool
 STLedgerEntry::isThreadedType(Rules const& rules) const
 {
-    static constexpr std::array<LedgerEntryType, 5> newPreviousTxnIDTypes = {
-        ltDIR_NODE, ltAMENDMENTS, ltFEE_SETTINGS, ltNEGATIVE_UNL, ltAMM};
+    static constexpr std::array<LedgerEntryType, 8> newPreviousTxnIDTypes = {
+        ltDIR_NODE,
+        ltAMENDMENTS,
+        ltFEE_SETTINGS,
+        ltNEGATIVE_UNL,
+        ltAMM,
+        ltHOOK_STATE,
+        ltHOOK_DEFINITION,
+        ltIMPORT_VLSEQ,
+    };
     // Exclude PrevTxnID/PrevTxnLgrSeq if the fixPreviousTxnID amendment is not
     // enabled and the ledger object type is in the above set
     bool const excludePrevTxnID = !rules.enabled(fixPreviousTxnID) &&