X-Git-Url: http://nitlanguage.org

diff --git a/src/nit.nit b/src/nit.nit
index 611da1a..6441b1a 100644
--- a/src/nit.nit
+++ b/src/nit.nit
@@ -17,17 +17,25 @@
 # A naive Nit interpreter
 module nit
 
-import modelbuilder
-import exprbuilder
-import naive_interpreter
+import interpreter
+import frontend::code_gen
+import parser_util
+import vm
 
 # Create a tool context to handle options and paths
 var toolcontext = new ToolContext
-# Add an option "-o" to enable compatibilit with the tests.sh script
-var opt = new OptionString("compatibility (does noting)", "-o")
+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 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_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
+toolcontext.process_options(args)
 
 # We need a model to collect stufs
 var model = new Model
@@ -35,19 +43,50 @@ var model = new Model
 var modelbuilder = new ModelBuilder(model, toolcontext)
 
 var arguments = toolcontext.option_context.rest
-if arguments.is_empty then
-	toolcontext.option_context.usage
-	return
-end
 var progname = arguments.first
 
 # Here we load an process all modules passed on the command line
-var mmodules = modelbuilder.parse_and_build([progname])
-modelbuilder.full_propdef_semantic_analysis
+var mmodules: Array[MModule]
+
+if opt_eval.value then
+	var amodule = toolcontext.parse_module(progname)
+	toolcontext.check_errors
+
+	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
+
+	modelbuilder.load_rt_module(parent, amodule, "-")
+
+	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
+	mmodules = modelbuilder.parse([progname])
+end
 
-if toolcontext.opt_only_metamodel.value then exit(0)
+modelbuilder.run_phases
+toolcontext.run_global_phases(modelbuilder.parsed_modules)
+
+if toolcontext.opt_only_metamodel.value then toolcontext.quit
+
+var mainmodule = toolcontext.make_main_module(mmodules)
+
+var self_mm = mainmodule
+var self_args = arguments
+
+if opt_vm.value then
+	modelbuilder.run_virtual_machine(self_mm, self_args)
+else
+	modelbuilder.run_naive_interpreter(self_mm, self_args)
+end
 
-# Here we launch the interpreter on the main module
-assert mmodules.length == 1
-var mainmodule = mmodules.first
-modelbuilder.run_naive_interpreter(mainmodule, arguments)