tests/syntax_lambda.nit

   1 # This file is part of NIT ( http://www.nitlanguage.org ).
   2 #
   3 # Licensed under the Apache License, Version 2.0 (the "License");
   4 # you may not use this file except in compliance with the License.
   5 # You may obtain a copy of the License at
   6 #
   7 #     http://www.apache.org/licenses/LICENSE-2.0
   8 #
   9 # Unless required by applicable law or agreed to in writing, software
  10 # distributed under the License is distributed on an "AS IS" BASIS,
  11 # WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
  12 # See the License for the specific language governing permissions and
  13 # limitations under the License.
  14
  15 class A
  16         fun foo(any: Object) do end
  17 end
  18
  19 class B
  20 end
  21
  22 fun bar(any: Object) do end
  23
  24 var a = fun do end
  25
  26 var b = fun do print 1 end
  27 #alt1# var b2 = fun do print 1 # mandatory end
  28 var b3 = (fun do print 1 end)
  29 #alt2# var b3 = (fun do print 1) # still mandatory end
  30
  31 var c = fun do
  32         print 1
  33         return
  34 end
  35
  36 var d = fun(a: A) do print 1 end
  37 var d2 = fun(a) do print 1 end # might be a sematic error but is legal syntax
  38
  39 var e = fun: A do return new A end
  40
  41 var f = fun(a: A, b: B...): C do return a.foo(b) end
  42
  43 var g = [fun: Int do return 1 end, fun: Int do return 2 end]
  44
  45 bar(fun do print 1 end)
  46 bar fun do print 1 end
  47
  48 bar(
  49 fun
  50 do
  51         print 1
  52 end
  53 )
  54
  55 (fun do print 1 end).bar
  56 fun do print 1 end.bar # this is unexpectedly legal
  57
  58 var z = fun do
  59         return fun do
  60                 return 1
  61         end
  62 end
  63
  64 fun do fun do end.foo fun do end end.bar # hmmm