/
server.rb
164 lines (143 loc) · 4.23 KB
/
server.rb
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# frozen_string_literal: true
require 'logger'
require 'stringio'
module Rucoa
class Server
# @return [Hash{String => Class}]
METHOD_TO_HANDLER_MAP = {
'exit' => Handlers::ExitHandler,
'initialize' => Handlers::InitializeHandler,
'initialized' => Handlers::InitializedHandler,
'shutdown' => Handlers::ShutdownHandler,
'textDocument/codeAction' => Handlers::TextDocumentCodeActionHandler,
'textDocument/completion' => Handlers::TextDocumentCompletionHandler,
'textDocument/didChange' => Handlers::TextDocumentDidChangeHandler,
'textDocument/didOpen' => Handlers::TextDocumentDidOpenHandler,
'textDocument/documentSymbol' => Handlers::TextDocumentDocumentSymbolHandler,
'textDocument/formatting' => Handlers::TextDocumentFormattingHandler,
'textDocument/rangeFormatting' => Handlers::TextDocumentRangeFormattingHandler,
'textDocument/selectionRange' => Handlers::TextDocumentSelectionRangeHandler,
'textDocument/signatureHelp' => Handlers::TextDocumentSignatureHelpHandler,
'workspace/didChangeConfiguration' => Handlers::WorkspaceDidChangeConfigurationHandler
}.freeze
private_constant :METHOD_TO_HANDLER_MAP
# @return [Boolean]
attr_accessor :shutting_down
# @return [Rucoa::Configuration]
attr_reader :configuration
# @return [Rucoa::DefinitionStore]
attr_reader :definition_store
# @return [Rucoa::SourceStore]
attr_reader :source_store
# @param io_log [IO]
# @param io_in [IO]
# @param io_out [IO]
def initialize(
io_log: ::StringIO.new,
io_in: ::StringIO.new,
io_out: ::StringIO.new
)
@logger = ::Logger.new(io_log)
@logger.level = ::Logger::DEBUG
@reader = MessageReader.new(io_in)
@writer = MessageWriter.new(io_out)
@client_response_handlers = {}
@configuration = Configuration.new
@server_request_id = 0
@shutting_down = false
@source_store = SourceStore.new
@definition_store = DefinitionStore.new
@definition_store.definitions += DefinitionArchiver.load
end
# @return [void]
def start
@reader.read do |message|
debug do
{
kind: :read,
message: message
}
end
handle(message)
end
end
# @return [void]
def finish
exit(0)
end
# @yieldparam response [Hash]
# @param message [Hash]
# @return [void]
def write(message, &block)
if block
write_server_request(message, &block)
else
write_server_response(message)
end
end
# @note This method is for testing.
# @return [Array<Hash>]
def responses
io = @writer.io
io.rewind
MessageReader.new(io).read.to_a
end
private
# @param request [Hash]
# @return [void]
def handle(request)
if request['method']
handle_client_request(request)
elsif request['id']
handle_client_response(request)
end
end
# @yieldparam log [String]
def debug(&block)
@logger.debug(&block) if configuration.enables_debug?
end
# @param request [Hash]
# @return [void]
def handle_client_request(request)
find_client_request_handler(request['method'])&.call(
request: request,
server: self
)
end
# @param response [Hash]
# @return [void]
def handle_client_response(response)
@client_response_handlers.delete(response['id'])&.call(response)
end
# @param request_method [String]
# @return [Class, nil]
def find_client_request_handler(request_method)
METHOD_TO_HANDLER_MAP[request_method]
end
# @param message [Hash]
# @return [void]
def write_server_request(message, &block)
message = message.merge('id' => @server_request_id)
debug do
{
kind: :write,
message: message
}
end
@writer.write(message)
@client_response_handlers[@server_request_id] = block
@server_request_id += 1
end
# @param message [Hash]
# @return [void]
def write_server_response(message)
debug do
{
kind: :write,
message: message
}
end
@writer.write(message)
end
end
end