node/ifaces: NodeImpl: Use existing NodeContext member

Author: dongcarl

src/node/interfaces.cpp

@@ -182,18 +182,21 @@ class NodeImpl : public Node
     int getNumBlocks() override
     {
         LOCK(::cs_main);
-        return ::ChainActive().Height();
+        assert(std::addressof(::ChainActive()) == std::addressof(m_context->chainman->ActiveChain()));
+        return m_context->chainman->ActiveChain().Height();
     }
     uint256 getBestBlockHash() override
     {
-        const CBlockIndex* tip = WITH_LOCK(::cs_main, return ::ChainActive().Tip());
+        assert(std::addressof(::ChainActive()) == std::addressof(m_context->chainman->ActiveChain()));
+        const CBlockIndex* tip = WITH_LOCK(::cs_main, return m_context->chainman->ActiveChain().Tip());
         return tip ? tip->GetBlockHash() : Params().GenesisBlock().GetHash();
     }
     int64_t getLastBlockTime() override
     {
         LOCK(::cs_main);
-        if (::ChainActive().Tip()) {
-            return ::ChainActive().Tip()->GetBlockTime();
+        assert(std::addressof(::ChainActive()) == std::addressof(m_context->chainman->ActiveChain()));
+        if (m_context->chainman->ActiveChain().Tip()) {
+            return m_context->chainman->ActiveChain().Tip()->GetBlockTime();
         }
         return Params().GenesisBlock().GetBlockTime(); // Genesis block's time of current network
     }
@@ -202,11 +205,15 @@ class NodeImpl : public Node
         const CBlockIndex* tip;
         {
             LOCK(::cs_main);
-            tip = ::ChainActive().Tip();
+            assert(std::addressof(::ChainActive()) == std::addressof(m_context->chainman->ActiveChain()));
+            tip = m_context->chainman->ActiveChain().Tip();
         }
         return GuessVerificationProgress(Params().TxData(), tip);
     }
-    bool isInitialBlockDownload() override { return ::ChainstateActive().IsInitialBlockDownload(); }
+    bool isInitialBlockDownload() override {
+        assert(std::addressof(::ChainstateActive()) == std::addressof(m_context->chainman->ActiveChainstate()));
+        return m_context->chainman->ActiveChainstate().IsInitialBlockDownload();
+    }
     bool getReindex() override { return ::fReindex; }
     bool getImporting() override { return ::fImporting; }
     void setNetworkActive(bool active) override
@@ -231,7 +238,8 @@ class NodeImpl : public Node
     bool getUnspentOutput(const COutPoint& output, Coin& coin) override
     {
         LOCK(::cs_main);
-        return ::ChainstateActive().CoinsTip().GetCoin(output, coin);
+        assert(std::addressof(::ChainstateActive()) == std::addressof(m_context->chainman->ActiveChainstate()));
+        return m_context->chainman->ActiveChainstate().CoinsTip().GetCoin(output, coin);
     }
     WalletClient& walletClient() override
     {