1 files changed, 47 insertions, 0 deletions
diff --git a/src/trans/codegen_c.hpp b/src/trans/codegen_c.hpp
new file mode 100644
index 00000000..72d0c796
--- /dev/null
+++ b/src/trans/codegen_c.hpp
@@ -0,0 +1,47 @@
+/*
+ */
+#pragma once
+#include <vector>
+#include <memory>
+
+class Node;
+
+struct NodeRef
+{
+    ::std::unique_ptr<Node>    node;
+    size_t  bb_idx;
+
+    NodeRef(size_t idx): bb_idx(idx) {}
+    NodeRef(Node node);
+
+    bool has_target() const;
+    size_t target() const;
+
+    bool operator==(size_t idx) const {
+        return !node && bb_idx == idx;
+    }
+};
+
+TAGGED_UNION(Node, Block,
+(Block, struct {
+    size_t  next_bb;
+    ::std::vector<NodeRef>  nodes;
+    }),
+(If, struct {
+    size_t  next_bb;
+    const ::MIR::LValue* val;
+    NodeRef arm_false;
+    NodeRef arm_true;
+    }),
+(Switch, struct {
+    size_t  next_bb;
+    const ::MIR::LValue* val;
+    ::std::vector<NodeRef>  arms;
+    }),
+(Loop, struct {
+    size_t  next_bb;
+    NodeRef code;
+    })
+);
+
+extern ::std::vector<Node> MIR_To_Structured(const ::MIR::Function& fcn);