Module: MilkTea::DAP::Server::ServerHandlers

Included in:
MilkTea::DAP::Server
Defined in:
lib/milk_tea/dap/server/handlers.rb

Instance Method Summary collapse

Instance Method Details

#handle_attach(message) ⇒ Object 



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# File 'lib/milk_tea/dap/server/handlers.rb', line 117

def handle_attach(message)
  args = message["arguments"] || {}
  unless args["backend"].to_s == "lldb-dap"
    write_error_response(message, "attach requires the lldb-dap backend")
    return
  end

  request_start(message)
end

#handle_cancel(message) ⇒ Object 



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# File 'lib/milk_tea/dap/server/handlers.rb', line 357

def handle_cancel(message)
  args = message["arguments"] || {}
  request_id = args["requestId"] || args["progressId"]

  if using_lldb_backend?
    backend_response = backend_request("cancel", { "requestId" => request_id }.compact)
    write_backend_response(message, backend_response)
  else
    join_background_threads(timeout: 0.1)
    write_response(message, {})
  end
end

#handle_configuration_done(message) ⇒ Object 



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# File 'lib/milk_tea/dap/server/handlers.rb', line 81

def handle_configuration_done(message)
  @session.configuration_done!

  if using_lldb_backend?
    backend_response = ensure_backend_initialized({})
    return write_backend_response(message, backend_response) unless backend_response["success"]

    unless wait_for_backend_configuration_ready
      write_error_response(message, "lldb-dap did not become ready for configuration")
      return
    end

    sync_breakpoints_to_backend
    sync_function_breakpoints_to_backend
    sync_exception_breakpoints_to_backend
    backend_response = backend_request("configurationDone", {})
    return write_backend_response(message, backend_response) unless backend_response["success"]

    if @backend_auto_continue_after_configuration
      continue_response = backend_request("continue", backend_continue_arguments)
      @backend_auto_continue_after_configuration = false
      return write_error_response(message, backend_error_message(continue_response)) unless continue_response["success"]
    end

    write_response(message, backend_response["body"] || {})
    return
  end

  write_response(message, {})
  maybe_start_or_stop_on_entry
end

#handle_continue(message) ⇒ Object 



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# File 'lib/milk_tea/dap/server/handlers.rb', line 194

def handle_continue(message)
  return write_backend_response(message, backend_request("continue", message["arguments"] || {})) if using_lldb_backend?

  start_runtime_if_needed
  continue_runtime_if_paused
  write_response(message, { allThreadsContinued: true })
  write_event("continued", {
    threadId: @session.thread_id,
    allThreadsContinued: true
  })
end

#handle_data_breakpoint_info(message) ⇒ Object 



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# File 'lib/milk_tea/dap/server/handlers.rb', line 330

def handle_data_breakpoint_info(message)
  if using_lldb_backend?
    arguments = rewrite_data_breakpoint_info_arguments(message["arguments"] || {})
    return write_backend_response(message, backend_request("dataBreakpointInfo", arguments))
  end

  write_error_response(message, "dataBreakpointInfo is not supported by the process backend")
end

#handle_disconnect(message) ⇒ Object 



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# File 'lib/milk_tea/dap/server/handlers.rb', line 262

def handle_disconnect(message)
  if using_lldb_backend?
    join_background_threads
    backend_response = backend_request("disconnect", message["arguments"] || {})
    write_backend_response(message, backend_response)
    stop_lldb_backend
    cleanup_tmp_dirs
    @session.request_exit!
    return
  end

  write_response(message, {})
  terminate_runtime_if_running
  unless @session.runtime_started?
    @session.terminate!
    write_event("terminated")
    write_event("exited", { exitCode: 0 })
  end
  cleanup_tmp_dirs
  @session.request_exit!
end

#handle_evaluate(message) ⇒ Object 



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# File 'lib/milk_tea/dap/server/handlers.rb', line 303

def handle_evaluate(message)
  if using_lldb_backend?
    arguments = rewrite_evaluate_arguments(message["arguments"] || {})
    return write_backend_response(message, backend_request("evaluate", arguments))
  end

  write_error_response(message, "evaluate is not supported by the process backend")
end

#handle_initialize(message) ⇒ Object 



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# File 'lib/milk_tea/dap/server/handlers.rb', line 7

def handle_initialize(message)
  if @session.initialized?
    write_error_response(message, "initialize can only be called once")
    return
  end

  @session.initialize!

  if default_backend_kind == "lldb-dap"
    start_lldb_backend({})
    backend_response = ensure_backend_initialized(message["arguments"] || {})
    return write_backend_response(message, backend_response) unless backend_response["success"]
  end

  write_response(message, effective_adapter_capabilities)

  write_event("initialized")
end

#handle_launch(message) ⇒ Object 



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# File 'lib/milk_tea/dap/server/handlers.rb', line 113

def handle_launch(message)
  request_start(message)
end

#handle_loaded_sources(message) ⇒ Object 



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# File 'lib/milk_tea/dap/server/handlers.rb', line 345

def handle_loaded_sources(message)
  return write_backend_response(message, backend_request("loadedSources", message["arguments"] || {})) if using_lldb_backend?

  write_response(message, { sources: [] })
end

#handle_next(message) ⇒ Object 



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# File 'lib/milk_tea/dap/server/handlers.rb', line 206

def handle_next(message)
  return write_backend_response(message, backend_request("next", message["arguments"] || {})) if using_lldb_backend?

  write_error_response(message, "next is not supported by the process backend")
end

#handle_pause(message) ⇒ Object 



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# File 'lib/milk_tea/dap/server/handlers.rb', line 224

def handle_pause(message)
  if using_lldb_backend?
    @backend_pause_requested = true
    backend_response = backend_request("pause", message["arguments"] || {})
    @backend_pause_requested = false unless backend_response["success"]
    return write_backend_response(message, backend_response)
  end

  unless pause_runtime_if_running
    return write_error_response(message, "pause failed: process is not running")
  end

  write_response(message, {})
  write_event("stopped", {
    reason: "pause",
    threadId: @session.thread_id,
    allThreadsStopped: true
  })
end

#handle_restart(message) ⇒ Object 



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# File 'lib/milk_tea/dap/server/handlers.rb', line 351

def handle_restart(message)
  return write_backend_response(message, backend_request("restart", message["arguments"] || {})) if using_lldb_backend?

  write_error_response(message, "restart is not supported by the process backend")
end

#handle_scopes(message) ⇒ Object 



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# File 'lib/milk_tea/dap/server/handlers.rb', line 163

def handle_scopes(message)
  if using_lldb_backend?
    arguments = message["arguments"] || {}
    backend_response = backend_request("scopes", arguments)
    rewrite_scopes_response(backend_response, arguments["frameId"])
    return write_backend_response(message, backend_response)
  end

  write_response(message, {
    scopes: [
      {
        name: "Locals",
        variablesReference: 1,
        expensive: false
      }
    ]
  })
end

#handle_set_breakpoints(message) ⇒ Object 



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# File 'lib/milk_tea/dap/server/handlers.rb', line 26

def handle_set_breakpoints(message)
  args = message["arguments"] || {}
  source = args["source"] || {}
  source_path = source["path"].to_s
  requested = args["breakpoints"] || Array(args["lines"]).map { |line| { "line" => line } }
  breakpoints = @session.set_breakpoints(source_path, requested)

  if using_lldb_backend?
    if backend_configuration_pending?
      @breakpoints_synced_to_backend = false
      write_response(message, { breakpoints: breakpoints })
      return
    end

    backend_response = backend_request("setBreakpoints", {
      "source" => source,
      "breakpoints" => requested
    })
    @breakpoints_synced_to_backend = false if backend_response["success"]
    return write_backend_response(message, backend_response)
  end

  # Process backend: mark breakpoints unverified
  if default_backend_kind == "process"
    breakpoints.each do |bp|
      bp["verified"] = false
      bp["message"] = "Process backend runs without a debugger; set breakpoints via lldb-dap backend instead."
    end
  end

  write_response(message, { breakpoints: breakpoints })
end

#handle_set_exception_breakpoints(message) ⇒ Object 



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# File 'lib/milk_tea/dap/server/handlers.rb', line 284

def handle_set_exception_breakpoints(message)
  arguments = message["arguments"] || {}
  @session.set_exception_breakpoints(arguments)

  if using_lldb_backend?
    if backend_configuration_pending?
      @exception_breakpoints_synced_to_backend = false
      write_response(message, {})
      return
    end

    backend_response = backend_request("setExceptionBreakpoints", arguments)
    @exception_breakpoints_synced_to_backend = false if backend_response["success"]
    return write_backend_response(message, backend_response)
  end

  write_response(message, {})
end

#handle_set_expression(message) ⇒ Object 



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# File 'lib/milk_tea/dap/server/handlers.rb', line 312

def handle_set_expression(message)
  if using_lldb_backend?
    arguments = rewrite_set_expression_arguments(message["arguments"] || {})
    return write_backend_response(message, backend_request("setExpression", arguments))
  end

  write_error_response(message, "setExpression is not supported by the process backend")
end

#handle_set_function_breakpoints(message) ⇒ Object 



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# File 'lib/milk_tea/dap/server/handlers.rb', line 59

def handle_set_function_breakpoints(message)
  args = message["arguments"] || {}
  requested = args["breakpoints"] || []
  breakpoints = @session.set_function_breakpoints(requested)

  if using_lldb_backend?
    if backend_configuration_pending?
      @function_breakpoints_synced_to_backend = false
      write_response(message, { breakpoints: breakpoints })
      return
    end

    backend_response = backend_request("setFunctionBreakpoints", {
      "breakpoints" => requested
    })
    @function_breakpoints_synced_to_backend = false if backend_response["success"]
    return write_backend_response(message, backend_response)
  end

  write_response(message, { breakpoints: breakpoints })
end

#handle_set_variable(message) ⇒ Object 



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# File 'lib/milk_tea/dap/server/handlers.rb', line 321

def handle_set_variable(message)
  if using_lldb_backend?
    arguments = rewrite_set_variable_arguments(message["arguments"] || {})
    return write_backend_response(message, request_set_variable(arguments))
  end

  write_error_response(message, "setVariable is not supported by the process backend")
end

#handle_source(message) ⇒ Object 



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# File 'lib/milk_tea/dap/server/handlers.rb', line 339

def handle_source(message)
  return write_backend_response(message, backend_request("source", message["arguments"] || {})) if using_lldb_backend?

  write_error_response(message, "source retrieval is not supported")
end

#handle_stack_trace(message) ⇒ Object 



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# File 'lib/milk_tea/dap/server/handlers.rb', line 137

def handle_stack_trace(message)
  if using_lldb_backend?
    maybe_load_debug_map_from_backend_modules
    backend_response = backend_request("stackTrace", message["arguments"] || {})
    rewrite_stack_trace_response(backend_response)
    return write_backend_response(message, backend_response)
  end

  source_path = @session.program_path || "(unknown)"
  write_response(message, {
    stackFrames: [
      {
        id: 1,
        name: "main",
        line: 1,
        column: 1,
        source: {
          name: File.basename(source_path),
          path: source_path
        }
      }
    ],
    totalFrames: 1
  })
end

#handle_step_in(message) ⇒ Object 



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# File 'lib/milk_tea/dap/server/handlers.rb', line 212

def handle_step_in(message)
  return write_backend_response(message, backend_request("stepIn", message["arguments"] || {})) if using_lldb_backend?

  write_error_response(message, "stepIn is not supported by the process backend")
end

#handle_step_out(message) ⇒ Object 



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# File 'lib/milk_tea/dap/server/handlers.rb', line 218

def handle_step_out(message)
  return write_backend_response(message, backend_request("stepOut", message["arguments"] || {})) if using_lldb_backend?

  write_error_response(message, "stepOut is not supported by the process backend")
end

#handle_terminate(message) ⇒ Object 



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# File 'lib/milk_tea/dap/server/handlers.rb', line 244

def handle_terminate(message)
  if using_lldb_backend?
    backend_response = request_backend_terminate(message["arguments"] || {})
    write_backend_response(message, backend_response)
    return
  end

  terminate_runtime_if_running
  write_response(message, {})
  return if @session.runtime_started?

  @session.terminate!
  write_event("terminated")
  write_event("exited", { exitCode: 0 })
  cleanup_tmp_dirs
  @session.request_exit!
end

#handle_threads(message) ⇒ Object 



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# File 'lib/milk_tea/dap/server/handlers.rb', line 127

def handle_threads(message)
  return write_backend_response(message, backend_request("threads", {})) if using_lldb_backend?

  write_response(message, {
    threads: [
      { id: @session.thread_id, name: "main" }
    ]
  })
end

#handle_variables(message) ⇒ Object 



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# File 'lib/milk_tea/dap/server/handlers.rb', line 182

def handle_variables(message)
  if using_lldb_backend?
    arguments = message["arguments"] || {}
    backend_response = backend_request("variables", arguments)
    rewrite_variables_response(backend_response, arguments["variablesReference"])
    return write_backend_response(message, backend_response)
  end

  _args = message["arguments"] || {}
  write_response(message, { variables: [] })
end