3 files changed, 44 insertions, 6 deletions
diff --git a/starts/meaning-vm/.gitignore b/starts/meaning-vm/.gitignore
index ff3f1d3..206b76d 100644
--- a/starts/meaning-vm/.gitignore
+++ b/starts/meaning-vm/.gitignore
@@ -2,5 +2,6 @@
 *.ii
 *.o
 *.a
+*.tmp
 level?
 habit-starts/rhythm
diff --git a/starts/meaning-vm/habit-starts/learning-parts.cpp b/starts/meaning-vm/habit-starts/learning-parts.cpp
index 7b3000e..56c7ffa 100644
--- a/starts/meaning-vm/habit-starts/learning-parts.cpp
+++ b/starts/meaning-vm/habit-starts/learning-parts.cpp
@@ -235,6 +235,43 @@ static int __init = ([]()->int{
 			}));
 	});
 
+	using links_it = level0::baseref::links_t::iterator;
+	ahabit(populate-link-entry, ((link-entry, le)),
+	{
+		result = le;
+		auto & it = result.vget<links_it>();
+		if (it != result["source"].links().end()) {
+			result.set("type", it->first);
+			result.set("target", it->second);
+		} else {
+			result.unlink("type");
+			result.unlink("target");
+		}
+	});
+	ahabit(first-link-entry, ((concept, c)),
+	{
+		result = level1::alloc(level, c.links().begin());
+		result.set("source", c);
+		(populate-link-entry)(result);
+	});
+	ahabit(last-link-entry, ((concept, c)),
+	{
+		result = level1::alloc(level, --c.links().end());
+		result.set("source", c);
+		(populate-link-entry)(result);
+	});
+	ahabit(next-link-entry, ((link-entry, le)),
+	{
+		result = le;
+		++result.vget<links_it>();
+		(populate-link-entry)(result);
+	});
+	ahabit(previous-link-entry, ((link-entry, le)),
+	{
+		result = le;
+		--result.vget<links_it>();
+		(populate-link-entry)(result);
+	});
 
 	/*
 	ahabit(happened-habit, ((happened, ev)),
diff --git a/starts/meaning-vm/level-0/baseref.hpp b/starts/meaning-vm/level-0/baseref.hpp
index 69880c8..d20b22a 100644
--- a/starts/meaning-vm/level-0/baseref.hpp
+++ b/starts/meaning-vm/level-0/baseref.hpp
@@ -108,18 +108,18 @@ private:
 
 	struct array
 	{
-		mutated_it<ref,typename concept::array::iterator> begin() { return array.begin(); }
-		mutated_it<ref,typename concept::array::iterator> end() { return array.end(); }
+		using iterator = mutated_it<ref,typename concept::array::iterator>;
+		iterator begin() { return array.begin(); }
+		iterator end() { return array.end(); }
 	
 		typename concept::array array;
 	};
 
 	struct links_t
 	{
-		mutated_it<std::pair<ref,ref>,typename decltype(concept::links)::iterator> begin()
-		{ return links.begin(); }
-		mutated_it<std::pair<ref,ref>,typename decltype(concept::links)::iterator> end()
-		{ return links.end(); }
+		using iterator = mutated_it<std::pair<ref,ref>,typename decltype(concept::links)::iterator>;
+		iterator begin() { return links.begin(); }
+		iterator end() { return links.end(); }
 
 		decltype(concept::links) & links;
 	};