Add rest of CAP-0056

Stellar-ledger.x

@@ -275,6 +275,32 @@ struct TransactionHistoryResultEntry
     ext;
 };
 
+struct TransactionResultPairV2
+{
+    Hash transactionHash;
+    Hash hashOfMetaHashes; // hash of hashes in TransactionMetaV3
+                           // TransactionResult is in the meta
+};
+
+struct TransactionResultSetV2
+{
+    TransactionResultPairV2 results<>;
+};
+
+struct TransactionHistoryResultEntryV2
+{
+    uint32 ledgerSeq;
+    TransactionResultSetV2 txResultSet;
+
+    // reserved for future use
+    union switch (int v)
+    {
+    case 0:
+        void;
+    }
+    ext;
+};
+
 struct LedgerHeaderHistoryEntry
 {
     Hash hash;
@@ -386,6 +412,21 @@ struct ContractEvent
     body;
 };
 
+struct TransactionMetaV3
+{
+    LedgerEntryChanges txChangesBefore; // tx level changes before operations
+                                        // are applied if any
+    OperationMeta operations<>;         // meta for each operation
+    LedgerEntryChanges txChangesAfter;  // tx level changes after operations are
+                                        // applied if any
+    ContractEvent events<>;            // custom events populated by the
+                                        // contracts themselves
+    TransactionResult txResult;
+
+    Hash hashes[3];                     // stores sha256(txChangesBefore, operations, txChangesAfter),
+                                        // sha256(events), and sha256(txResult)
+};
+
 // this is the meta produced when applying transactions
 // it does not include pre-apply updates such as fees
 union TransactionMeta switch (int v)
@@ -396,6 +437,8 @@ case 1:
     TransactionMetaV1 v1;
 case 2:
     TransactionMetaV2 v2;
+case 3:
+    TransactionMetaV3 v3;
 };
 
 // This struct groups together changes on a per transaction basis
@@ -408,6 +451,13 @@ struct TransactionResultMeta
     TransactionMeta txApplyProcessing;
 };
 
+struct TransactionResultMetaV2
+{
+    TransactionResultPairV2 result;
+    LedgerEntryChanges feeProcessing;
+    TransactionMeta txApplyProcessing;
+};
+
 // this represents a single upgrade that was performed as part of a ledger
 // upgrade
 struct UpgradeEntryMeta
@@ -452,11 +502,32 @@ struct LedgerCloseMetaV1
     SCPHistoryEntry scpInfo<>;
 };
 
+// only difference between V1 and V2 is this uses TransactionResultMetaV2
+struct LedgerCloseMetaV2
+{
+    LedgerHeaderHistoryEntry ledgerHeader;
+
+    GeneralizedTransactionSet txSet;
+
+    // NB: transactions are sorted in apply order here
+    // fees for all transactions are processed first
+    // followed by applying transactions
+    TransactionResultMetaV2 txProcessing<>;
+
+    // upgrades are applied last
+    UpgradeEntryMeta upgradesProcessing<>;
+
+    // other misc information attached to the ledger close
+    SCPHistoryEntry scpInfo<>;
+};
+
 union LedgerCloseMeta switch (int v)
 {
 case 0:
     LedgerCloseMetaV0 v0;
 case 1:
     LedgerCloseMetaV1 v1;
+case 2:
+    LedgerCloseMetaV2 v2;
 };
 }