Implement Calc language for future tests

Author: Keno

src/DebuggerFramework.jl

@@ -5,6 +5,11 @@ module DebuggerFramework
 
     abstract type StackFrame end
 
+    immutable Suppressed{T}
+        item::T
+    end
+    Base.show(io::IO, x::Suppressed) = print(io, "<suppressed ", x.item, '>')
+
     function print_var(io::IO, name, val::Nullable, undef_callback)
         print("  | ")
         if isnull(val)

test/brainstack.jl

@@ -1,6 +1,5 @@
 using Base.Test
 using DebuggerFramework
-reload("DebuggerFramework")
 
 # This file will define a minimalistic programming language and implement a
 # debugger for this language. The language is not supposed to be useful, it