Introduce custom adjacency-list based graph

src/rose/rose_graph.h

@@ -44,11 +44,10 @@
 #include "util/charreach.h"
 #include "util/depth.h"
 #include "util/ue2_containers.h"
+#include "util/ue2_graph.h"
 
 #include <memory>
 #include <set>
-#include <boost/graph/adjacency_list.hpp>
-#include <boost/graph/graph_traits.hpp>
 
 namespace ue2 {
 
@@ -139,7 +138,7 @@ struct RoseSuffixInfo {
 /** \brief Properties attached to each Rose graph vertex. */
 struct RoseVertexProps {
     /** \brief Unique dense vertex index. Used for BGL algorithms. */
-    size_t idx = ~size_t{0};
+    size_t index = ~size_t{0};
 
     /** \brief IDs of literals in the Rose literal map. */
     flat_set<u32> literals;
@@ -183,6 +182,9 @@ struct RoseVertexProps {
 /** \brief Properties attached to each Rose graph edge. */
 /* bounds are distance from end of prev to start of the next */
 struct RoseEdgeProps {
+    /** \brief Unique dense vertex index. Used for BGL algorithms. */
+    size_t index = ~size_t{0};
+
     /**
      * \brief Minimum distance from the end of the source role's match to the
      * start of the target role's match.
@@ -215,18 +217,10 @@ bool operator<(const RoseEdgeProps &a, const RoseEdgeProps &b);
 
 /**
  * \brief Core Rose graph structure.
- *
- * Note that we use the list selector for the edge and vertex lists: we depend
- * on insertion order for determinism, so we must use these containers.
  */
-using RoseGraph = boost::adjacency_list<boost::listS, // out edge list per vertex
-                                        boost::listS, // vertex list
-                                        boost::bidirectionalS, // bidirectional
-                                        RoseVertexProps, // bundled vertex properties
-                                        RoseEdgeProps, // bundled edge properties
-                                        boost::listS // graph edge list
-                                        >;
-
+struct RoseGraph : public ue2_graph<RoseGraph, RoseVertexProps, RoseEdgeProps> {
+    friend class RoseBuildImpl; /* to allow index renumbering */
+};
 using RoseVertex = RoseGraph::vertex_descriptor;
 using RoseEdge = RoseGraph::edge_descriptor;