Implement a Language Server Protocol for editors about rainlisp

[chr1st0scli]

Thank you for the feedback @Visnusah .

[Visnusah]

Implementing an LSP (Language Server Protocol) for RainLisp involves creating a server application that understands the LSP protocol and interacts with the RainLisp language. Here's a simplified example of how you might implement an LSP server for RainLisp using Python and the python-language-server library:

from typing import List, Dict, Any, Optional
from lsp_server import BaseLanguageServer
from lsp_types import InitializeParams, InitializeResult, TextDocumentSyncKind, Position, Range, \
    CompletionItem, CompletionList, CompletionParams, CompletionContext, \
    MarkupContent, MarkupKind


class RainLispLanguageServer(BaseLanguageServer):
    def __init__(self):
        super().__init__()
        # Initialize any necessary state for your language server here

    def initialize(self, params: InitializeParams) -> InitializeResult:
        # Perform any initialization tasks here
        capabilities = {
            "textDocumentSync": TextDocumentSyncKind.Incremental,
            "completionProvider": {
                "resolveProvider": False,
                "triggerCharacters": ["(", "'", '"']
            }
        }
        return InitializeResult(capabilities=capabilities)

    def completion(self, params: CompletionParams) -> Optional[Union[List[CompletionItem], CompletionList]]:
        # Provide completion suggestions here
        # Example implementation
        completion_items = [
            CompletionItem(label="function"),
            CompletionItem(label="variable"),
            # Add more completion items as needed
        ]
        return completion_items

    # Implement other LSP methods as needed

if __name__ == "__main__":
    server = RainLispLanguageServer()
    server.start()

In this example, BaseLanguageServer is a hypothetical base class that handles the communication protocol of the LSP. You would need to implement or use a library that provides the LSP communication protocol.

The initialize method initializes the language server and returns its capabilities. In this example, it declares support for incremental text document synchronization and completion provider with specific trigger characters.

The completion method handles completion requests from the client. It returns a list of completion items based on the current context.

You would need to implement other LSP methods such as textDocument/didOpen, textDocument/didChange, textDocument/didSave, etc., as required by the Language Server Protocol.

Please note that this is a simplified example, and you may need to adjust it based on the specifics of RainLisp and the requirements of your implementation. Additionally, you'll need to handle the parsing and analysis of RainLisp code within the server to provide accurate language features like code completion, hover information, etc.