- #Visual studio code php language server parsing how to
- #Visual studio code php language server parsing full
Var includeNode = (x => x.Name.Equals(IncludeAttribute)) Public TextDocumentSyncKind Change ), isIncomplete: completions.Count > 1) Įlse if ((VersionAttribute)) Public TextDocumentSyncHandler(ILanguageServer router, BufferManager bufferManager) Private SynchronizationCapability _capability Private readonly DocumentSelector _documentSelector = new DocumentSelector( Private readonly BufferManager _bufferManager Private readonly ILanguageServer _router TextDocumentSyncHandler.cs class TextDocumentSyncHandler : ITextDocumentSyncHandler Return _buffers.TryGetValue(documentPath, out var buffer) ? buffer : null Public Buffer GetBuffer(string documentPath) _buffers.AddOrUpdate(documentPath, buffer, (k, v) => buffer) Public void UpdateBuffer(string documentPath, Buffer buffer) Private ConcurrentDictionary _buffers = new ConcurrentDictionary() For real world scenarios, you'd most probably want to also parse the document upon each change and publish diagnostics as they occur (see textDocument/publishDiagnostics and PublishDiagnosticsExtensions.cs)
#Visual studio code php language server parsing full
For simplicity, in this sample, we'll just use a ConcurrentDictionary as the backing store which will just contain the full text for each document (with the document path as key). To have the buffer available for other handlers, we'll create a BufferManager whose main task is to always contain the latest version of a document. In real world scenarios, for performance reasons, I'd strongly suggest registering for receiving incremental updates. For simplicity, in this sample, we'll register to receive the full document text on every text change. When registering the textDocument/didChange notification handler, we'll have the possibility to select either Full or Incremental as syncKind. textDocument/didChange is fundamental for a Language Server as this is where all document changes will end up as the end user is writing code. This is a handler which will handle the LSP Text Synchronization notifications didOpen, textDocument/didChange, textDocument/didSave and textDocument/didClose. \Server\Server.csproj package -version 1.2.27įirst thing we'll need to do is to implement an ITextDocumentSyncHandler. \Server\Server.csproj package -version 0.10.0ĭotnet add. Then we'll add the dependencies (the latter is just for the XmlParser) dotnet add.
Creating the serverįirst, well start of by creating a new. The full sample which we'll create in the rest of this blog post is available on GitHub at. Again, don't parse the files yourself (unless you know what you are doing), use a proper parser to get an Abstract Syntax Tree (AST). Microsoft left some valuable notes here when they created the tolerant PHP parser, which currently backs PHP support in Visual Studio Code. The first and most important rule of implementing a Language Server, is that you'll need an error tolerant parser as most of the time the code in the editor is incomplete and syntactically incorrect. You may think that using XmlReader or LINQ to XML would be sufficient, this is however not true. NET, we are going to use, which is a C# implementation of the LSP, authored by David Driscoll member of the OmniSharp team.įor parsing XML, we are going to use Kirill Osenkov's XmlParser. We are going to focus on integrating it with Visual Studio Code, but since LSP is supported by a wide range of IDE´s and editors, the effort for integrating it with any other editor should be minimal. In this sample, we are going to create a Language Server for *.csproj which enables autocomplete for elements. In the rest of this blog post I'll walk you through the process of creating a Language Server supporting LSP using C# and. But if you, like me, shouldn't be trusted with JavaScript, I have good news for you.
#Visual studio code php language server parsing how to
Visual Studio Code docs include a sample on how to create a language server using Node.js®.
The specification can be found on GitHub and through the official LSP website.
LSP is a protocol originally developed by Microsoft for Visual Studio Code, which has evolved into an open standard that is supported by a wide range of editors and IDE's, including Visual Studio, Visual Studio Code, Eclipse, Atom, vim and emacs. This way, a single Language Server can be re-used in multiple development tools, which in turn can support multiple languages with minimal effort. The idea behind the Language Server Protocol (LSP) is to standardize the protocol for how such servers and development tools communicate. A Language Server is meant to provide the language-specific smarts and communicate with development tools over a protocol that enables inter-process communication.
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