Merge pull request #701 from evoskuil/master

Add get_top_confirmed_hash().

Author: evoskuil

include/bitcoin/database/impl/query/archive_read.ipp

@@ -86,6 +86,18 @@ inline bool CLASS::is_valid(const header_link& link) const NOEXCEPT
 // Empty/null_hash implies fault, zero count implies unassociated.
 // ----------------------------------------------------------------------------
 
+TEMPLATE
+hash_digest CLASS::get_top_confirmed_hash() const NOEXCEPT
+{
+    return get_header_key(to_confirmed(get_top_confirmed()));
+}
+
+TEMPLATE
+hash_digest CLASS::get_top_candidate_hash() const NOEXCEPT
+{
+    return get_header_key(to_candidate(get_top_candidate()));
+}
+
 TEMPLATE
 hashes CLASS::get_tx_keys(const header_link& link) const NOEXCEPT
 {

include/bitcoin/database/query.hpp

@@ -331,6 +331,8 @@ class query
     inline bool is_valid(const header_link& link) const NOEXCEPT;
 
     /// Empty/null_hash implies fault, zero count implies unassociated.
+    hash_digest get_top_confirmed_hash() const NOEXCEPT;
+    hash_digest get_top_candidate_hash() const NOEXCEPT;
     hashes get_tx_keys(const header_link& link) const NOEXCEPT;
     size_t get_tx_count(const header_link& link) const NOEXCEPT;
     inline hash_digest get_header_key(const header_link& link) const NOEXCEPT;