First working version of capability interfaces

capnp/capabilityHelper.h

@@ -0,0 +1,32 @@
+#include "capnp/dynamic.h"
+#include <stdexcept>
+#include "Python.h"
+#include <iostream>
+
+extern "C" {
+   PyObject * wrap_dynamic_struct_reader(capnp::DynamicStruct::Reader &);
+   void call_server_method(PyObject * py_server, char * name, capnp::CallContext< capnp::DynamicStruct, capnp::DynamicStruct> & context);
+ }
+
+class PythonInterfaceDynamicImpl final: public capnp::DynamicCapability::Server {
+public:
+  PyObject * py_server;
+
+  PythonInterfaceDynamicImpl(capnp::InterfaceSchema & schema, PyObject * py_server)
+      : capnp::DynamicCapability::Server(schema), py_server(py_server) {}
+
+  kj::Promise<void> call(capnp::InterfaceSchema::Method method,
+                         capnp::CallContext< capnp::DynamicStruct, capnp::DynamicStruct> context) {
+    auto methodName = method.getProto().getName();
+    call_server_method(py_server, const_cast<char *>(methodName.cStr()), context);
+    return kj::READY_NOW;
+  }
+};
+
+capnp::DynamicCapability::Client new_client(capnp::InterfaceSchema & schema, PyObject * server, kj::EventLoop & loop) {
+  return capnp::DynamicCapability::Client(kj::heap<PythonInterfaceDynamicImpl>(schema, server), loop);
+}
+
+::kj::Promise<PyObject *> convert_to_pypromise(capnp::RemotePromise<capnp::DynamicStruct> & promise) {
+    return promise.then([](capnp::Response<capnp::DynamicStruct>&& response) { return wrap_dynamic_struct_reader(response); } );
+}