scripted-diff: Move src/kernel/coinstats to kernel::

Introduces a new kernel:: namespace and move all of src/kernel/coinstats
under it.

In the verify script, lines like:

line="$(grep -n 'namespace node {' -- src/kernel/coinstats.h | tail -n1 | cut -d: -f1)"
sed -i -e "${line}s@namespace node {@namespace kernel {@" -- src/kernel/coinstats.h

Are intended to replace only the last instance of "namespace node" with
"namespace kernel", this is to avoid replacing forward declarations of
things inside the node:: namespace.

-BEGIN VERIFY SCRIPT-
sed -E -i 's@namespace node@namespace kernel@g' -- src/kernel/coinstats.cpp

line="$(grep -n 'namespace node {' -- src/kernel/coinstats.h | tail -n1 | cut -d: -f1)"
sed -i -e "${line}s@namespace node {@namespace kernel {@" -- src/kernel/coinstats.h

line="$(grep -n '// namespace node' -- src/kernel/coinstats.h | tail -n1 | cut -d: -f1)"
sed -i -e "${line}s@// namespace node@// namespace kernel@" -- src/kernel/coinstats.h

things='(CCoinsStats|CoinStatsHashType|GetBogoSize|TxOutSer|ComputeUTXOStats)'
git grep -lE 'node::'"$things" | xargs sed -E -i 's@node::'"$things"'@kernel::\1@g'
sed -E -i 's@'"$things"'@kernel::\1@g' -- src/node/coinstats.cpp src/node/coinstats.h
sed -E -i 's@BlockManager@node::\0@g' -- src/kernel/coinstats.cpp
-END VERIFY SCRIPT-

2 files changed, 5 insertions, 5 deletions

diff --git a/src/node/coinstats.cpp b/src/node/coinstats.cpp
index 12c8e7b0da..784d33d698 100644
--- a/src/node/coinstats.cpp
+++ b/src/node/coinstats.cpp
@@ -11,10 +11,10 @@
 #include <validation.h>
 
 namespace node {
-std::optional<CCoinsStats> GetUTXOStats(CCoinsView* view, BlockManager& blockman, CoinStatsHashType hash_type, const std::function<void()>& interruption_point, const CBlockIndex* pindex, bool index_requested)
+std::optional<kernel::CCoinsStats> GetUTXOStats(CCoinsView* view, BlockManager& blockman, kernel::CoinStatsHashType hash_type, const std::function<void()>& interruption_point, const CBlockIndex* pindex, bool index_requested)
 {
     // Use CoinStatsIndex if it is requested and available and a hash_type of Muhash or None was requested
-    if ((hash_type == CoinStatsHashType::MUHASH || hash_type == CoinStatsHashType::NONE) && g_coin_stats_index && index_requested) {
+    if ((hash_type == kernel::CoinStatsHashType::MUHASH || hash_type == kernel::CoinStatsHashType::NONE) && g_coin_stats_index && index_requested) {
         if (pindex) {
             return g_coin_stats_index->LookUpStats(pindex);
         } else {
@@ -29,6 +29,6 @@ std::optional<CCoinsStats> GetUTXOStats(CCoinsView* view, BlockManager& blockman
     // best block.
     assert(!pindex || pindex->GetBlockHash() == view->GetBestBlock());
 
-    return ComputeUTXOStats(hash_type, view, blockman, interruption_point);
+    return kernel::ComputeUTXOStats(hash_type, view, blockman, interruption_point);
 }
 } // namespace node
diff --git a/src/node/coinstats.h b/src/node/coinstats.h
index fbd5fd4067..b1d1384bb3 100644
--- a/src/node/coinstats.h
+++ b/src/node/coinstats.h
@@ -28,8 +28,8 @@ namespace node {
  *
  * @param[in] index_requested Signals if the coinstatsindex should be used (when available).
  */
-std::optional<CCoinsStats> GetUTXOStats(CCoinsView* view, node::BlockManager& blockman,
-                                        CoinStatsHashType hash_type,
+std::optional<kernel::CCoinsStats> GetUTXOStats(CCoinsView* view, node::BlockManager& blockman,
+                                        kernel::CoinStatsHashType hash_type,
                                         const std::function<void()>& interruption_point = {},
                                         const CBlockIndex* pindex = nullptr,
                                         bool index_requested = true);