LSP Server

[KushalGaywala]

By using on of the python-lsp-server or jedi-language-server servers, and an client interface that we could use are pygls, or multilspy.
We could access the language server advantages of auto-complete, getting reference, go-to-definition, and other good stuffs.

I think LSP should have its own issue.

[KushalGaywala]

Language Server Protocol Server

Goal

• Create a python app that takes a code or a python file, creates suggestions, completions, or fetch the definition of the function in question.

Known Knowledge

Language Server Protocol

• Language Server Protocol provides specifications on how to implement a language server to be used for a language.
• It means, it provides guidelines on how to request and response, to a langauge server
• Provides specific ways on how to formulate the request and response.
• To maintain the consistency between all the langauge servers
• That can be used in any way or the form possible easily, mostly in a text editor or an IDE.

Language Server

• Language server is the actual server that is implemented according to the specifications mentioned in protocol
• It provides the completion, suggestions, and documentations to the client
• But still doesn't provides the documentations but it provides the definition path
• It can be also integrated with a project's codebase
• For python there are two LS that we could use are maintained actively,
  • python-lsp-server - It uses jedi under the hood for the completions (cool to know eh!)
  • jedi-language-server

LS Clients

• The clients can be used to interact with the LS
• In our case we have three choices,
  • pygls (called pie glass)
  • multilspy
  • vscode - try to create an extension and figure out how they do the code completion

Benefits

• The go to definition functionality fetches
  • the documentations of the packages or
  • user defined functions
• Can also fetch the declerations of the user defined variables
• Can integrate it to find the errors
  • types errors
  • incorrect usage
  • incorrect number of arguments

Plan

• Understand the basics of a LSP
• Understand how the LSP interacts with the LS
• Select one of the clients (current pygls)
• Find a way to use the clients to our benefit
• Implement a test package