Addition of ~ bitwise operator (#10)

* Add ~ operator dispatch

* test for ~ operator

Author: wsphillips

src/operators.jl

@@ -1,4 +1,4 @@
-import Base: +, -, *, &, |, xor, ==
+import Base: +, -, *, &, |, xor, ==, ~
 
 for op in (:+, :-, :&, :|, :xor, :(==))
     @eval begin
@@ -14,4 +14,8 @@ for op in (:+, :-, :&, :|, :xor, :(==))
     end
 end
 
+function ~(a::Cenum{T}) where {T<:Integer}
+    ~(T(a))
+end
+
 Base.convert(::Type{T1}, x::Cenum{T2}) where {T1<:Integer,T2<:Integer} = convert(T1, T2(x))

test/runtests.jl

@@ -12,6 +12,7 @@ using Test
 @test apple + 1 == 2
 @test kiwi - 1 == 1
 @test kiwi ⊻ kiwi == 0
+@test ~orange == -3
 @test_nowarn print(devnull, Fruit(apple | orange))
 
 @cenum(Boolean::Bool, alternativefact, fact)