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Add support for new C# language server (lsp-roslyn)
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Original file line number | Diff line number | Diff line change |
---|---|---|
@@ -0,0 +1,136 @@ | ||
param ( | ||
[string]$ServerName = ".", | ||
[Parameter(Mandatory=$true)][string]$PipeName | ||
) | ||
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# Use named pipe as stdin/out | ||
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||
$Source = @" | ||
using System; | ||
using System.Text; | ||
using System.IO; | ||
using System.IO.Pipes; | ||
using System.Threading.Tasks; | ||
public static class StdPipe | ||
{ | ||
public static void RouteToPipe(string pipeServer, string pipeName) | ||
{ | ||
var pipeClient = new NamedPipeClientStream(pipeServer, pipeName, PipeDirection.InOut, PipeOptions.Asynchronous); | ||
pipeClient.Connect(); | ||
var pipeReader = new BufferedStream(pipeClient); | ||
var pipeWriter = new BufferedStream(pipeClient); | ||
var stdin = new BufferedStream(Console.OpenStandardInput()); | ||
var stdout = new BufferedStream(Console.OpenStandardOutput()); | ||
var tasks = new Task<byte[]>[2] | ||
{ | ||
ReadHeaderDelimitedAsync(pipeReader), | ||
ReadHeaderDelimitedAsync(stdin) | ||
}; | ||
while (true) | ||
{ | ||
var doneIdx = Task.WaitAny(tasks); | ||
var bytesRead = tasks[doneIdx].Result; | ||
if (doneIdx == 0) | ||
{ | ||
// pipe in -> stdout | ||
if (bytesRead.Length == 0) | ||
{ | ||
// pipe was closed | ||
break; | ||
} | ||
stdout.Write(bytesRead, 0, bytesRead.Length); | ||
stdout.Flush(); | ||
tasks[doneIdx] = ReadHeaderDelimitedAsync(pipeReader); | ||
} | ||
else | ||
{ | ||
// stdin -> pipe out | ||
pipeWriter.Write(bytesRead, 0, bytesRead.Length); | ||
pipeWriter.Flush(); | ||
tasks[doneIdx] = ReadHeaderDelimitedAsync(stdin); | ||
} | ||
} | ||
} | ||
private static async Task<byte[]> ReadHeaderDelimitedAsync(Stream stream) | ||
{ | ||
// Assigning new tasks with this function blocks the thread | ||
// unless this is awaited first. | ||
await Task.Yield(); | ||
var idx = 0; | ||
var header = new byte[64]; | ||
int b = 0; | ||
do | ||
{ | ||
var bytesRead = await stream.ReadAsync(header, idx, 1); | ||
if (bytesRead == 0) | ||
continue; | ||
b = header[idx++]; | ||
} while (b != '\r'); | ||
var colonPos = Array.IndexOf(header, (byte)':'); | ||
if (colonPos == -1) | ||
{ | ||
return new byte[0]; | ||
} | ||
var headerName = new byte[colonPos]; | ||
Array.Copy(header, headerName, colonPos); | ||
var headerContent = new byte[idx - colonPos - 1]; | ||
Array.Copy(header, colonPos + 2, headerContent, 0, headerContent.Length - 2); | ||
if (Encoding.ASCII.GetString(headerName) != "Content-Length") | ||
{ | ||
return new byte[0]; | ||
} | ||
if (headerContent.Length > 20) | ||
{ | ||
return new byte[0]; | ||
} | ||
int contentLength; | ||
try | ||
{ | ||
contentLength = int.Parse(Encoding.ASCII.GetString(headerContent)); | ||
} | ||
catch (Exception) | ||
{ | ||
return new byte[0]; | ||
} | ||
var buffer = new byte[contentLength + idx + 3]; | ||
var c = 0; | ||
for (var i = 0; i < idx; i++) | ||
{ | ||
buffer[c++] = header[i]; | ||
} | ||
// LF, CRLF | ||
var bytesToRead = contentLength + 3; | ||
while (bytesToRead > 0) | ||
{ | ||
var bytesRead = await stream.ReadAsync(buffer, c, bytesToRead); | ||
bytesToRead -= bytesRead; | ||
c += bytesRead; | ||
} | ||
return buffer; | ||
} | ||
} | ||
"@ | ||
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Add-Type -TypeDefinition $Source -Language CSharp | ||
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try { | ||
[StdPipe]::RouteToPipe($ServerName, $PipeName) | ||
} catch [System.AggregateException] { | ||
Write-Error $error[0].exception.innerexception | ||
throw $error[0].exception.innerexception | ||
} |
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