Extract get_frame method

Author: st0012

lib/debug/server_cdp.rb

@@ -710,7 +710,7 @@ def process_cdp args
       when :evaluate
         res = {}
         fid, expr = args
-        frame = @target_frames[fid]
+        frame = get_frame(fid)
         message = nil
 
         if frame && (b = frame.binding)
@@ -779,7 +779,7 @@ def process_cdp args
         event! :cdp_result, :evaluate, req, message: message, response: res, output: output
       when :scope
         fid = args.shift
-        frame = @target_frames[fid]
+        frame = get_frame(fid)
         if b = frame.binding
           vars = b.local_variables.map{|name|
             v = b.local_variable_get(name)

lib/debug/server_dap.rb

@@ -612,7 +612,7 @@ def process_dap args
         }
       when :scopes
         fid = args.shift
-        frame = @target_frames[fid]
+        frame = get_frame(fid)
 
         lnum =
           if frame.binding
@@ -640,7 +640,7 @@ def process_dap args
         }]
       when :scope
         fid = args.shift
-        frame = @target_frames[fid]
+        frame = get_frame(fid)
         if b = frame.binding
           vars = b.local_variables.map{|name|
             v = b.local_variable_get(name)
@@ -712,7 +712,7 @@ def process_dap args
 
       when :evaluate
         fid, expr, context = args
-        frame = @target_frames[fid]
+        frame = get_frame(fid)
         message = nil
 
         if frame && (b = frame.binding)
@@ -774,7 +774,7 @@ def process_dap args
 
       when :completions
         fid, text = args
-        frame = @target_frames[fid]
+        frame = get_frame(fid)
 
         if (b = frame&.binding) && word = text&.split(/[\s\{]/)&.last
           words = IRB::InputCompletor::retrieve_completion_data(word, bind: b).compact

lib/debug/thread_client.rb

@@ -432,8 +432,12 @@ def show_src(frame_index: @current_frame_index,
     end
 
     def current_frame
+      get_frame(@current_frame_index)
+    end
+
+    def get_frame(index)
       if @target_frames
-        @target_frames[@current_frame_index]
+        @target_frames[index]
       else
         nil
       end