--- /dev/null
+# This file is part of NIT ( http://www.nitlanguage.org ).
+#
+# Copyright 2012 Jean Privat <jean@pryen.org>
+#
+# 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.
+
+# A Nit compiler
+module nitc
+
+import frontend
+import compiler
+import transform
+
+redef class ToolContext
+ redef fun process_options(args)
+ do
+ super
+
+ var sum = opt_global.value.to_i + opt_separate.value.to_i + opt_erasure.value.to_i
+ if sum > 1 then
+ print "Options --global, --separate and --erasure are exclusive"
+ exit(1)
+ else if sum == 0 then
+ # --separate by default
+ opt_separate.value = true
+ end
+ end
+end