Add vhdl_element::print method for debugging

tgt-vhdl/scope.cc

@@ -64,8 +64,12 @@ static vhdl_expr *nexus_to_expr(vhdl_scope *arch_scope, ivl_nexus_t nexus)
 }
 
 vhdl_var_ref *nexus_to_var_ref(vhdl_scope *arch_scope, ivl_nexus_t nexus)
-{   
-   vhdl_var_ref *ref = dynamic_cast<vhdl_var_ref*>(nexus_to_expr(arch_scope, nexus));
+{
+   vhdl_expr *e = nexus_to_expr(arch_scope, nexus);
+
+   e->print();   
+   
+   vhdl_var_ref *ref = dynamic_cast<vhdl_var_ref*>(e);
    assert(ref);
    return ref;
 }

tgt-vhdl/vhdl_element.cc

@@ -72,3 +72,9 @@ void vhdl_element::emit_comment(std::ostream &of, int level,
          newline(of, level);
    }
 }
+
+void vhdl_element::print() const
+{
+   emit(std::cout, 0);
+   std::cout << std::endl;
+}

tgt-vhdl/vhdl_element.hh

@@ -35,6 +35,7 @@ public:
    virtual ~vhdl_element() {}
    
    virtual void emit(std::ostream &of, int level=0) const = 0;
+   void print() const;
 
    void set_comment(std::string comment);
 protected: