From 217d6142e92a21f592ffacadb6598fb41005d577 Mon Sep 17 00:00:00 2001
From: user <user@localhost.localdomain>
Date: Mon, 23 Dec 2019 11:08:26 -0800
Subject: wip link iteration habits

---
 starts/meaning-vm/habit-starts/learning-parts.cpp | 19 +++++++++++++++++++
 starts/meaning-vm/level-0/baseref.hpp             | 12 ++++++------
 2 files changed, 25 insertions(+), 6 deletions(-)

diff --git a/starts/meaning-vm/habit-starts/learning-parts.cpp b/starts/meaning-vm/habit-starts/learning-parts.cpp
index c53b260..b5cd56c 100644
--- a/starts/meaning-vm/habit-starts/learning-parts.cpp
+++ b/starts/meaning-vm/habit-starts/learning-parts.cpp
@@ -234,6 +234,25 @@ static int __init = ([]()->int{
 			i, l);
 	});
 
+	using links_it = level0::baseref::links_t::iterator;
+	ahabit(populate-link-entry, ((link-entry, le)),
+	{
+		result = le;
+		result.set("source", c);
+		result.set("type", result.vget<links_t>().first);
+		result.set("target", result.vget<links_t>().second);
+	});
+	ahabit(first-link-entry, ((concept, c)),
+	{
+		result = level1::alloc(level, c.links().begin());
+		(populate-link-entry)(result);
+	});
+	ahabit(last-link-entry, ((concept, c)),
+	{
+		result = level1::alloc(level, --c.links().end());
+		(populate-link-entry)(result);
+	});
+
 	ahabit(happened-habit, ((happened, ev)),
 	{
 		if (!happened.linked(whenever-list)) { return; }
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;
 	};
-- 
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