src/nit.nit

   1 # This file is part of NIT ( http://www.nitlanguage.org ).
   2 #
   3 # Copyright 2012 Jean Privat <jean@pryen.org>
   4 #
   5 # Licensed under the Apache License, Version 2.0 (the "License");
   6 # you may not use this file except in compliance with the License.
   7 # You may obtain a copy of the License at
   8 #
   9 #     http://www.apache.org/licenses/LICENSE-2.0
  10 #
  11 # Unless required by applicable law or agreed to in writing, software
  12 # distributed under the License is distributed on an "AS IS" BASIS,
  13 # WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
  14 # See the License for the specific language governing permissions and
  15 # limitations under the License.
  16
  17 # A naive Nit interpreter
  18 module nit
  19
  20 import naive_interpreter
  21 import debugger
  22
  23 # Create a tool context to handle options and paths
  24 var toolcontext = new ToolContext
  25 toolcontext.tooldescription = "Usage: nit [OPTION]... <file.nit>...\nInterprets and debbugs Nit programs."
  26 # Add an option "-o" to enable compatibilit with the tests.sh script
  27 var opt = new OptionString("compatibility (does noting)", "-o")
  28 toolcontext.option_context.add_option(opt)
  29 var opt_mixins = new OptionArray("Additionals module to min-in", "-m")
  30 toolcontext.option_context.add_option(opt_mixins)
  31 # We do not add other options, so process them now!
  32 toolcontext.process_options(args)
  33
  34 # We need a model to collect stufs
  35 var model = new Model
  36 # An a model builder to parse files
  37 var modelbuilder = new ModelBuilder(model, toolcontext.as(not null))
  38
  39 var arguments = toolcontext.option_context.rest
  40 var progname = arguments.first
  41
  42 # Here we load an process all modules passed on the command line
  43 var mmodules = modelbuilder.parse([progname])
  44 mmodules.add_all modelbuilder.parse(opt_mixins.value)
  45 modelbuilder.run_phases
  46
  47 if toolcontext.opt_only_metamodel.value then exit(0)
  48
  49 var mainmodule: nullable MModule
  50
  51 # Here we launch the interpreter on the main module
  52 if mmodules.length == 1 then
  53         mainmodule = mmodules.first
  54 else
  55         mainmodule = new MModule(model, null, mmodules.first.name, mmodules.first.location)
  56         mainmodule.set_imported_mmodules(mmodules)
  57 end
  58
  59 var self_mm = mainmodule.as(not null)
  60 var self_args = arguments.as(not null)
  61
  62 if toolcontext.opt_debugger_autorun.value then
  63         modelbuilder.run_debugger_autorun(self_mm, self_args)
  64 else if toolcontext.opt_debugger_mode.value then
  65         modelbuilder.run_debugger(self_mm, self_args)
  66 else
  67         modelbuilder.run_naive_interpreter(self_mm, self_args)
  68 end
  69