--- /dev/null
+# This file is part of NIT ( http://www.nitlanguage.org ).
+#
+# Copyright 2014 Johan Kayser <kayser.johan@gmail.com>
+#
+# Licensed under the Apache License, Version 2.0 (the "License");
+# you may not use this file except in compliance with the License.
+# You may obtain a copy of the License at
+#
+# http://www.apache.org/licenses/LICENSE-2.0
+#
+# Unless required by applicable law or agreed to in writing, software
+# distributed under the License is distributed on an "AS IS" BASIS,
+# WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+# See the License for the specific language governing permissions and
+# limitations under the License.
+
+# Debugging of a nit program using sockets.
+module debugger_socket
+
+intrude import debugger
+import websocket
+
+redef class ToolContext
+ # --socket
+ var opt_socket_mode = new OptionBool("Launches the target program with raw output on the network via sockets", "--socket")
+
+ # --websocket
+ var opt_websocket_mode = new OptionBool("Launches the target program with output on the network via websockets", "--websocket")
+
+ # --port
+ var opt_debug_port: OptionInt = new OptionInt("Sets the debug port (Defaults to 22125) - Must be contained between 0 and 65535", 22125, "--port")
+
+ redef init
+ do
+ super
+ self.option_context.add_option(self.opt_socket_mode)
+ self.option_context.add_option(self.opt_websocket_mode)
+ self.option_context.add_option(self.opt_debug_port)
+ end
+end
+
+redef class ModelBuilder
+ # Execute the program from the entry point (Sys::main) of the `mainmodule`
+ # `arguments` are the command-line arguments in order
+ # REQUIRE that:
+ # 1. the AST is fully loaded.
+ # 2. the model is fully built.
+ # 3. the instructions are fully analysed.
+ redef fun run_debugger(mainmodule: MModule, arguments: Array[String])
+ do
+ var time0 = get_time
+ self.toolcontext.info("*** START INTERPRETING ***", 1)
+
+ var interpreter = new Debugger(self, mainmodule, arguments)
+
+ set_stdstreams
+
+ init_naive_interpreter(interpreter, mainmodule)
+
+ close_stdstreams
+
+ var time1 = get_time
+ self.toolcontext.info("*** END INTERPRETING: {time1-time0} ***", 2)
+ end
+
+ redef fun run_debugger_autorun(mainmodule: MModule, arguments: Array[String])
+ do
+ var time0 = get_time
+ self.toolcontext.info("*** START INTERPRETING ***", 1)
+
+ var interpreter = new Debugger(self, mainmodule, arguments)
+ interpreter.autocontinue = true
+
+ set_stdstreams
+
+ init_naive_interpreter(interpreter, mainmodule)
+
+ close_stdstreams
+
+ var time1 = get_time
+ self.toolcontext.info("*** END INTERPRETING: {time1-time0} ***", 2)
+ end
+
+ redef fun run_naive_interpreter(mmod, args)
+ do
+ set_stdstreams
+ super
+ end
+
+ fun set_stdstreams
+ do
+ if self.toolcontext.opt_socket_mode.value then
+ var sock = new Socket.server(toolcontext.opt_debug_port.value, 1)
+ var ns = sock.accept
+ sock.close
+ sys.set_io(ns,ns,ns)
+ else if self.toolcontext.opt_websocket_mode.value then
+ var websock = new WebSocket(toolcontext.opt_debug_port.value, 1)
+ websock.accept
+ sys.set_io(websock,websock,websock)
+ end
+ end
+
+ fun close_stdstreams
+ do
+ if sys.stdin isa WebSocket or sys.stdin isa Socket then
+ sys.stdin.close
+ sys.stdout.close
+ sys.stderr.close
+ end
+ end
+end
+
+redef class Sys
+ private fun set_io(istream: PollableIStream, ostream: OStream, errstream: OStream)
+ do
+ self.stdin = istream
+ self.stdout = ostream
+ self.stderr = ostream
+ end
+end