+void ProgramCompiler::InterfaceGenerator::visit(Block &block)
+{
+ SetForScope<unsigned> set(scope_level, scope_level+1);
+ for(list<NodePtr<Node> >::iterator i=block.body.begin(); i!=block.body.end(); )
+ {
+ (*i)->visit(*this);
+
+ if(scope_level==1)
+ {
+ for(map<string, VariableDeclaration *>::iterator j=iface_declarations.begin(); j!=iface_declarations.end(); ++j)
+ {
+ list<NodePtr<Node> >::iterator k = block.body.insert(i, j->second);
+ (*k)->visit(*this);
+ }
+ iface_declarations.clear();
+ }
+
+ for(list<Node *>::iterator j=insert_nodes.begin(); j!=insert_nodes.end(); ++j)
+ block.body.insert(i, *j);
+ insert_nodes.clear();
+
+ if(remove_node)
+ block.body.erase(i++);
+ else
+ ++i;
+ remove_node = false;
+ }
+}
+
+string ProgramCompiler::InterfaceGenerator::change_prefix(const string &name, const string &prefix) const
+{
+ unsigned offset = (name.compare(0, in_prefix.size(), in_prefix) ? 0 : in_prefix.size());
+ return prefix+name.substr(offset);
+}
+
+bool ProgramCompiler::InterfaceGenerator::generate_interface(VariableDeclaration &var, const string &iface, const string &name)
+{
+ const map<string, VariableDeclaration *> &stage_vars = (iface=="in" ? stage->in_variables : stage->out_variables);
+ if(stage_vars.count(name) || iface_declarations.count(name))
+ return false;
+
+ VariableDeclaration* iface_var = new VariableDeclaration;
+ iface_var->sampling = var.sampling;
+ iface_var->interface = iface;
+ iface_var->type = var.type;
+ iface_var->type_declaration = var.type_declaration;
+ iface_var->name = name;
+ if(stage->type==GEOMETRY)
+ iface_var->array = ((var.array && var.interface!="in") || iface=="in");
+ else
+ iface_var->array = var.array;
+ if(iface_var->array)
+ iface_var->array_size = var.array_size;
+ if(iface=="in")
+ iface_var->linked_declaration = &var;
+ iface_declarations[name] = iface_var;
+
+ return true;
+}
+
+void ProgramCompiler::InterfaceGenerator::insert_assignment(const string &left, ProgramSyntax::Expression *right)
+{
+ BinaryExpression *assign = new BinaryExpression;
+ VariableReference *ref = new VariableReference;
+ ref->name = left;
+ assign->left = ref;
+ assign->oper = "=";
+ assign->right = right;
+ assign->assignment = true;
+
+ ExpressionStatement *stmt = new ExpressionStatement;
+ stmt->expression = assign;
+ insert_nodes.push_back(stmt);
+}
+
+void ProgramCompiler::InterfaceGenerator::visit(VariableReference &var)