From 05682b323f3365dba3f7f0192016f1d05152b418 Mon Sep 17 00:00:00 2001
From: Luke Lau <luke_lau@icloud.com>
Date: Tue, 30 Jul 2019 22:25:31 +0100
Subject: [PATCH] Add notes on typechecking

---
 typecheck.md | 12 ++++++++++++
 1 file changed, 12 insertions(+)
 create mode 100644 typecheck.md

diff --git a/typecheck.md b/typecheck.md
new file mode 100644
index 0000000..c892a59
--- /dev/null
+++ b/typecheck.md
@@ -0,0 +1,12 @@
+# lets
+
+Lets bindings are recursive, and so to handle this the typechecker
+first creates a dependency graph of the bindings with `graph`.
+
+The strongly connected components are then computed with `scss`, and
+then when creating the environment for the let body:
+
+1. For each strongly connected component (scc) 
+2. Insert the offsets of each component in the scc into the environment
+3. Codegen the bindings in the scc
+4. Pass on the environment to the next scc
-- 
2.30.2