src/metamodel/vararg.nit

   1 # This file is part of NIT ( http://www.nitlanguage.org ).
   2 #
   3 # Copyright 2004-2008 Jean Privat <jean@pryen.org>
   4 # Copyright 2006-2008 Floréal Morandat <morandat@lirmm.fr>
   5 #
   6 # Licensed under the Apache License, Version 2.0 (the "License");
   7 # you may not use this file except in compliance with the License.
   8 # You may obtain a copy of the License at
   9 #
  10 #     http://www.apache.org/licenses/LICENSE-2.0
  11 #
  12 # Unless required by applicable law or agreed to in writing, software
  13 # distributed under the License is distributed on an "AS IS" BASIS,
  14 # WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
  15 # See the License for the specific language governing permissions and
  16 # limitations under the License.
  17
  18 # Handle multiple number of parameters in signatures
  19 package vararg
  20
  21 import genericity
  22
  23 redef class MMSignature
  24         # Position of the vararg parameter. -1 in no vararg parameter
  25         readable writable var _vararg_rank: Int
  26
  27         # Is there a vararg parameter in the signature?
  28         fun has_vararg: Bool
  29         do
  30                 return _vararg_rank >= 0
  31         end
  32
  33         redef fun adaptation_to(r)
  34         do
  35                 var s = super(r)
  36                 s.vararg_rank = _vararg_rank
  37                 return s
  38         end
  39
  40         redef fun not_for_self
  41         do
  42                 var s = super
  43                 s.vararg_rank = _vararg_rank
  44                 return s
  45         end
  46
  47         redef init(params, return_type, r)
  48         do
  49                 super
  50                 _vararg_rank = -1
  51         end
  52 end