async Task ListenForMessages()
{
this.messageLoopSyncContext = SynchronizationContext.Current;
// Ensure that the console is using UTF-8 encoding
System.Console.InputEncoding = Encoding.UTF8;
System.Console.OutputEncoding = Encoding.UTF8;
// Open the standard input/output streams
this.inputStream = System.Console.OpenStandardInput();
this.outputStream = System.Console.OpenStandardOutput();
IMessageSerializer messageSerializer = null;
IMessageProcessor messageProcessor = null;
// Use a different serializer and message processor based
// on whether this instance should host a language server
// debug adapter.
if (this.runDebugAdapter)
{
DebugAdapter debugAdapter = new DebugAdapter();
debugAdapter.Initialize();
messageProcessor = debugAdapter;
messageSerializer = new V8MessageSerializer();
}
else
{
// Set up the LanguageServer
LanguageServer languageServer = new LanguageServer();
languageServer.Initialize();
messageProcessor = languageServer;
messageSerializer = new JsonRpcMessageSerializer();
}
// Set up the reader and writer
this.messageReader =
new MessageReader(
this.inputStream,
messageSerializer);
this.messageWriter =
new MessageWriter(
this.outputStream,
messageSerializer);
// Set up the console host which will send events
// through the MessageWriter
this.consoleHost = new StdioConsoleHost(messageWriter);
// Set up the PowerShell session
this.editorSession = new EditorSession();
this.editorSession.StartSession(this.consoleHost);
this.editorSession.PowerShellContext.OutputWritten += powerShellContext_OutputWritten;
if (this.runDebugAdapter)
{
// Attach to debugger events from the PowerShell session
this.editorSession.DebugService.DebuggerStopped += DebugService_DebuggerStopped;
}
// Run the message loop
bool isRunning = true;
while (isRunning)
{
Message newMessage = null;
try
{
// Read a message from stdin
newMessage = await this.messageReader.ReadMessage();
}
catch (MessageParseException e)
{
// TODO: Write an error response
Logger.Write(
LogLevel.Error,
"Could not parse a message that was received:\r\n\r\n" +
e.ToString());
// Continue the loop
continue;
}
// Process the message
await messageProcessor.ProcessMessage(
newMessage,
this.editorSession,
this.messageWriter);
}
}
public void Start()
{
// If the test is running in the debugger, tell the language
// service to also wait for the debugger
string languageServiceArguments = string.Empty;
if (System.Diagnostics.Debugger.IsAttached)
{
languageServiceArguments = "/waitForDebugger";
}
this.languageServiceProcess = new System.Diagnostics.Process
{
StartInfo = new ProcessStartInfo
{
FileName = "Microsoft.PowerShell.EditorServices.Host.exe",
Arguments = languageServiceArguments,
CreateNoWindow = true,
UseShellExecute = false,
RedirectStandardInput = true,
RedirectStandardOutput = true,
RedirectStandardError = true,
StandardOutputEncoding = Encoding.UTF8,
},
EnableRaisingEvents = true,
};
// Start the process
this.languageServiceProcess.Start();
// Attach to the language service process if debugging
if (System.Diagnostics.Debugger.IsAttached)
{
AttachToProcessIfDebugging(this.languageServiceProcess.Id);
}
IMessageSerializer messageSerializer = new JsonRpcMessageSerializer();
// Open the standard input/output streams
this.inputStream = this.languageServiceProcess.StandardOutput.BaseStream;
this.outputStream = this.languageServiceProcess.StandardInput.BaseStream;
// Set up the message reader and writer
this.MessageReader =
new MessageReader(
this.inputStream,
messageSerializer);
this.MessageWriter =
new MessageWriter(
this.outputStream,
messageSerializer);
// Send the 'initialize' request and wait for the response
var initializeRequest = new InitializeRequest
{
RootPath = "",
Capabilities = new ClientCapabilities()
};
// TODO: Assert some capability data?
this.MessageWriter.WriteRequest(InitializeRequest.Type, initializeRequest, 1).Wait();
Message initializeResponse = this.MessageReader.ReadMessage().Result;
}
