Merge pull request #15 from tk0miya/async_rbs_builder_loader

Support loading types asynchronously

lib/katakata_irb.rb

@@ -1,5 +1,6 @@
 require 'katakata_irb/version'
 require 'katakata_irb/completor'
+require 'katakata_irb/types'
 
 module KatakataIrb
   class << self

lib/katakata_irb/types.rb

@@ -4,7 +4,25 @@
 module KatakataIrb; end
 module KatakataIrb::Types
   def self.rbs_builder
-    @rbs_builder ||= load_rbs_builder
+    preload if @rbs_builder.nil?
+
+    @rbs_builder
+  end
+
+  def self.loader_type=(loader_type)
+    @loader_type = loader_type
+  end
+
+  def self.preload
+    case @loader_type
+    when :sync, nil
+      @rbs_builder = load_rbs_builder
+    when :async
+      @loader_thread ||= Thread.new do
+        @rbs_builder = load_rbs_builder
+      end
+    end
+    rbs_builder_loader.run if @rbs_builder.nil?
   end
 
   def self.load_rbs_builder
@@ -59,6 +77,8 @@ def self.method_return_type(type, method_name)
   end
 
   def self.rbs_methods(type, method_name, args_types, kwargs_type, has_block)
+    return [] unless rbs_builder
+
     receivers = type.types.map do |t|
       case t
       in ProcType