vscode-languageserver-protocol

Defining Language Server Capabilities

This code sample demonstrates how to define the capabilities of a language server, such as synchronization, completion, and definition lookup.

{"capabilities": {"textDocumentSync": 1, "completionProvider": {"resolveProvider": true, "triggerCharacters": [".", "{"]}, "definitionProvider": true}}

Handling Language Server Initialization

This code sample shows how to handle the initialization request from a client to a language server, specifying the process ID, root path, client capabilities, and trace settings.

{"jsonrpc": "2.0", "id": 1, "method": "initialize", "params": {"processId": null, "rootPath": null, "capabilities": {}, "trace": "off"}}

Sending Diagnostics to the Client

This code sample illustrates how a language server can send diagnostics (such as errors or warnings) to the client for a specific document.

{"jsonrpc": "2.0", "method": "textDocument/publishDiagnostics", "params": {"uri": "file:///path/to/file", "diagnostics": [{"range": {"start": {"line": 0, "character": 0}, "end": {"line": 0, "character": 1}}, "severity": 1, "message": "Error message"}]}}