comments

1 files changed, 4 insertions, 0 deletions

diff --git a/src/visit.h b/src/visit.h
index 1175a86..646ac61 100644
--- a/src/visit.h
+++ b/src/visit.h
@@ -4,6 +4,9 @@
 

 #include <functional>

 

+// struct with callback functions for all relevant types

+// tree can be walked selectively by providing only

+// needed callbacks

 struct Visitor {

   std::function<void(const Type &, const std::shared_ptr<Context> ctx)> onType = [](auto, auto){};

   std::function<void(const Expr &, const std::shared_ptr<Context> ctx)> onExpr = [](auto, auto){};

@@ -20,6 +23,7 @@ struct Visitor {
 

 #define VISIT(XS) for (auto x : XS) visit(x);

 

+// simply walk IR by recursively calling functions for all children

 struct Visit {

 private:

   Visitor v;