xo-jit: refactor to support function pointer arguments.

src/jit/activation_record.cpp

@@ -0,0 +1,45 @@
+/* @file activation_record.cpp */
+
+#include "activation_record.hpp"
+#include "xo/indentlog/print/tag.hpp"
+#include <iostream>
+
+namespace xo {
+    namespace jit {
+        using std::cerr;
+        using std::endl;
+
+        llvm::AllocaInst *
+        activation_record::lookup_var(const std::string & x) const {
+
+            auto ix = frame_.find(x);
+
+            if (ix == frame_.end()) {
+                cerr << "activation_record::lookup_var: no binding for variable x"
+                     << xtag("x", x)
+                     << endl;
+                return nullptr;
+            }
+
+            return ix->second;
+        } /*lookup_var*/
+
+        llvm::AllocaInst *
+        activation_record::alloc_var(const std::string & x,
+                                     llvm::AllocaInst * alloca)
+        {
+            if (frame_.find(x) != frame_.end()) {
+                cerr << "activation_record::alloc_var: variable x already present in frame"
+                     << xtag("x", x)
+                     << endl;
+                return nullptr;
+            }
+
+            frame_[x] = alloca;
+            return alloca;
+        } /*alloc_var*/
+    } /*namespace jit*/
+} /*namespace xo*/
+
+
+/* end activation_record.cpp */