Redesign organize/confirm around updated queries.

include/bitcoin/node/chasers/chaser_block.hpp

@@ -46,7 +46,7 @@ class BCN_API chaser_block
 
     /// Query store for const pointer to Block instance by candidate height.
     bool get_block(system::chain::block::cptr& out,
-        size_t height) const NOEXCEPT override;
+        const header_link& link) const NOEXCEPT override;
 
     /// Determine if Block is a duplicate (success for not duplicate).
     code duplicate(size_t& height,

include/bitcoin/node/chasers/chaser_confirm.hpp

@@ -42,6 +42,7 @@ class BCN_API chaser_confirm
 protected:
     using header_link = database::header_link;
     using header_links = database::header_links;
+    using header_states = database::header_states;
 
     virtual bool handle_event(const code& ec, chase event_,
         event_value value) NOEXCEPT;
@@ -51,12 +52,13 @@ class BCN_API chaser_confirm
     virtual void do_bumped(height_t height) NOEXCEPT;
     virtual void do_bump(height_t height) NOEXCEPT;
 
-    virtual void reorganize(header_links& fork, size_t fork_point) NOEXCEPT;
-    virtual void organize(header_links& fork, const header_links& popped,
+    virtual void reorganize(header_states& fork, size_t top,
+        size_t fork_point) NOEXCEPT;
+    virtual void organize(header_states& fork, const header_links& popped,
         size_t fork_point) NOEXCEPT;
     virtual bool confirm_block(const header_link& link,
         size_t height, const header_links& popped, size_t fork_point) NOEXCEPT;
-    virtual void complete_block(const code& ec, const header_link& link,
+    virtual bool complete_block(const code& ec, const header_link& link,
         size_t height, bool bypassed) NOEXCEPT;
 
 private:

include/bitcoin/node/chasers/chaser_header.hpp

@@ -49,7 +49,7 @@ class BCN_API chaser_header
 
     /// Query store for const pointer to Block instance by candidate height.
     bool get_block(system::chain::header::cptr& out,
-        size_t height) const NOEXCEPT override;
+        const header_link& link) const NOEXCEPT override;
 
     /// Determine if Block is a duplicate (success for not duplicate).
     code duplicate(size_t& height,

include/bitcoin/node/chasers/chaser_organize.hpp

@@ -54,7 +54,7 @@ class chaser_organize
         chain_state::cptr state;
     };
     using block_tree = std::unordered_map<system::hash_cref, block_state>;
-    using header_links = std_vector<database::header_link>;
+    using header_link = database::header_link;
 
     /// Protected constructor for abstract base.
     chaser_organize(full_node& node) NOEXCEPT;
@@ -66,9 +66,9 @@ class chaser_organize
     virtual const system::chain::header& get_header(
         const Block& block) const NOEXCEPT = 0;
 
-    /// Query store for const pointer to Block instance by candidate height.
+    /// Query store for const pointer to Block instance by link.
     virtual bool get_block(typename Block::cptr& out,
-        size_t height) const NOEXCEPT = 0;
+        const header_link& link) const NOEXCEPT = 0;
 
     /// Determine if Block is a duplicate (success for not duplicate).
     virtual code duplicate(size_t& height,
@@ -112,6 +112,9 @@ class chaser_organize
     virtual const system::settings& settings() const NOEXCEPT;
 
 private:
+    using header_links = database::header_links;
+    using header_states = database::header_states;
+
     // Template differetiators.
     // ------------------------------------------------------------------------
 
@@ -162,14 +165,10 @@ class chaser_organize
         const system::hash_digest& previous_hash) const NOEXCEPT;
 
     // Sum of work from header to branch point (excluded).
-    bool get_branch_work(uint256_t& branch_work, size_t& branch_point,
-        system::hashes& tree_branch, header_links& store_branch,
+    bool get_branch_work(uint256_t& branch_work,
+        system::hashes& tree_branch, header_states& store_branch,
         const system::chain::header& header) const NOEXCEPT;
 
-    // True if work represents a stronger candidate branch.
-    bool get_is_strong(bool& strong, const uint256_t& branch_work,
-        size_t branch_point) const NOEXCEPT;
-
     // Logging.
     // ------------------------------------------------------------------------