Module: Lsp::LanguageServer

Defined in:
lib/lsp.rb

Constant Summary collapse

LanguageServerError = 
Class.new(StandardError)
NotImplementedError = 
Class.new(LanguageServerError)

Instance Attribute Summary collapse

Instance Method Summary collapse

Instance Attribute Details

#language_server=(value) ⇒ Object (writeonly)

Sets the attribute language_server

Parameters:

  • value —

    the value to set the attribute language_server to.



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# File 'lib/lsp.rb', line 161

def language_server=(value)
  @language_server = value
end

Instance Method Details

#handle_initialize(request) ⇒ Object

Raises:



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# File 'lib/lsp.rb', line 171

def handle_initialize(request)
  raise NotImplementedError
end

#handle_text_document_definition(request) ⇒ Object

Raises:



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# File 'lib/lsp.rb', line 167

def handle_text_document_definition(request)
  raise NotImplementedError
end

#handle_text_document_did_open ⇒ Object

Raises:



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# File 'lib/lsp.rb', line 175

def handle_text_document_did_open
  raise NotImplementedError
end

#handle_text_document_hover(request) ⇒ Object

Raises:



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# File 'lib/lsp.rb', line 163

def handle_text_document_hover(request)
  raise NotImplementedError
end

#notify(method_name, params) ⇒ Object 



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# File 'lib/lsp.rb', line 142

def notify(method_name, params)
  case method_name
  when "textDocument/didOpen"
    handle_text_document_did_open
  end
rescue NotImplementedError
end

#request(id, method_name, params) ⇒ Object 



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# File 'lib/lsp.rb', line 96

def request(id, method_name, params)
  response = case method_name
  when "textDocument/hover"
    handle_text_document_hover(
      TextDocumentPositionParams.new(
        TextDocumentIdentifier.new(
          URI(params.fetch(:textDocument).fetch(:uri))),
        Position.from_hash(params.fetch(:position))))
  when "textDocument/definition"
    handle_text_document_definition(
      TextDocumentPositionParams.new(
        TextDocumentIdentifier.new(
          URI(params.fetch(:textDocument).fetch(:uri))),
        Position.from_hash(params.fetch(:position))))
  when "initialize"
    handle_initialize(
      InitializeRequest.new(
        URI(params.fetch(:rootUri))))
  when "textDocument/completion"
    handle_text_document_completion(
      TextDocumentPositionParams.new(
        TextDocumentIdentifier.new(
          URI(params.fetch(:textDocument).fetch(:uri))),
        Position.from_hash(params.fetch(:position))))
  when "textDocument/didChange"
    handle_text_document_did_change(
      DidChangeTextDocumentParams.new(
        VersionedTextDocumentIdentifier.new(
          URI(params.fetch(:textDocument).fetch(:uri)),
          params.fetch(:textDocument).fetch(:version)),
        params.fetch(:contentChanges).map do |contentChange|
          next if contentChange[:range]
          TextDocumentContentChangeEvent.new(
            contentChange.fetch(:text))
        end.compact))
  else
    ResponseMessage.new(nil, ResponseError::MethodNotFound.new)
  end
  @language_server.response(
    id,
    to_result(response.result),
    to_result(response.error))
rescue NotImplementedError
  ResponseMessage.new(nil, ResponseError::MethodNotFound.new)
end

#to_result(obj) ⇒ Object 



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# File 'lib/lsp.rb', line 150

def to_result(obj)
  case obj
  when Array
    obj.map {|elem| to_result(elem) }
  when NilClass
    nil
  else
    obj.to_h
  end
end