# A naive Nit interpreter
module nit
-import naive_interpreter
-import debugger
-import debugger_socket
+import interpreter
+import frontend
+import parser_util
+import vm
# Create a tool context to handle options and paths
var toolcontext = new ToolContext
+toolcontext.option_context.options_before_rest = true
toolcontext.tooldescription = "Usage: nit [OPTION]... <file.nit>...\nInterprets and debugs Nit programs."
-# Add an option "-o" to enable compatibilit with the tests.sh script
-var opt = new OptionString("compatibility (does noting)", "-o")
+# Add an option "-o" to enable compatibility with the tests.sh script
+var opt = new OptionString("Does nothing. Used for compatibility.", "-o")
+opt.hidden = true
toolcontext.option_context.add_option(opt)
-var opt_mixins = new OptionArray("Additionals module to min-in", "-m")
-toolcontext.option_context.add_option(opt_mixins)
+var opt_eval = new OptionBool("Specifies the program from command-line", "-e")
+var opt_loop = new OptionBool("Repeatedly run the program for each line in file-name arguments", "-n")
+var opt_vm = new OptionBool("Run the virtual machine instead of the naive interpreter (experimental)", "--vm")
+toolcontext.option_context.add_option(opt_eval, opt_loop, opt_vm)
# We do not add other options, so process them now!
toolcontext.process_options(args)
var progname = arguments.first
# Here we load an process all modules passed on the command line
-var mmodules = modelbuilder.parse([progname])
-mmodules.add_all modelbuilder.parse(opt_mixins.value)
-modelbuilder.run_phases
+var mmodules: Array[MModule]
+
+if opt_eval.value then
+ var amodule = toolcontext.parse_module(progname)
+ toolcontext.check_errors
-if toolcontext.opt_only_metamodel.value then exit(0)
+ var parent = null
+ if opt_loop.value then
+ parent = modelbuilder.get_mmodule_by_name(null, null, "niti_runtime")
+ if parent == null then
+ toolcontext.check_errors
+ abort
+ end
+ end
-var mainmodule: nullable MModule
+ modelbuilder.load_rt_module(parent, amodule, "-")
-# Here we launch the interpreter on the main module
-if mmodules.length == 1 then
- mainmodule = mmodules.first
+ mmodules = [amodule.mmodule.as(not null)]
+else if progname == "-" then
+ var content = stdin.read_all
+ var amodule = toolcontext.parse_module(content)
+ toolcontext.check_errors
+ modelbuilder.load_rt_module(null, amodule, "-")
+ mmodules = [amodule.mmodule.as(not null)]
else
- mainmodule = new MModule(model, null, mmodules.first.name, mmodules.first.location)
- mainmodule.set_imported_mmodules(mmodules)
+ mmodules = modelbuilder.parse([progname])
end
+modelbuilder.run_phases
+
+if toolcontext.opt_only_metamodel.value then toolcontext.quit
+
+var mainmodule = toolcontext.make_main_module(mmodules)
+
var self_mm = mainmodule
var self_args = arguments
modelbuilder.run_debugger_autorun(self_mm, self_args)
else if toolcontext.opt_debugger_mode.value then
modelbuilder.run_debugger(self_mm, self_args)
+else if opt_vm.value then
+ modelbuilder.run_virtual_machine(self_mm, self_args)
else
modelbuilder.run_naive_interpreter(self_mm, self_args)
end