VM basics (#5)

Co-authored-by: Andre Wagner <WagnerAndre@JohnDeere.com>
Reviewed-on: https://192.168.5.48/andre/tyche/pulls/5

src/vm/expr.cc

@@ -0,0 +1,18 @@
+#include "expr.hh"
+
+#include "vm_exceptions.hh"
+
+namespace tyche::vm {
+
+Value binary_operation(Value const& a, Value const& b, BinaryOperationType op)
+{
+    // TODO - this is temporary code
+
+    if (a.type() == Type::Integer && b.type() == Type::Integer && op == BinaryOperationType::Sum) {
+        return Value::CreateInteger(a.as_integer() + b.as_integer());
+    } else {
+        throw VMInvalidOperation(op, a.type(), b.type());
+    }
+}
+
+}