Merge pull request #150 from JuliaRobotics/hotfix/149_DFGVariableSoftype

Towards #149 - Slightly improved without breaking changes.

Author: GearsAD

src/entities/DFGVariable.jl

@@ -1,7 +1,11 @@
+#TODO don't know what to do if it is uninitalized
+#so for now defining a Singleton for the default
+struct SingletonInferenceVariable <: InferenceVariable end
+
 """
 $(TYPEDEF)
 """
-mutable struct VariableNodeData
+mutable struct VariableNodeData #TODO v0.5.0 {T<:InferenceVariable}
   val::Array{Float64,2}
   bw::Array{Float64,2}
   BayesNetOutVertIDs::Array{Symbol,1}
@@ -10,15 +14,15 @@ mutable struct VariableNodeData
   eliminated::Bool
   BayesNetVertID::Symbol #  Union{Nothing, }
   separator::Array{Symbol,1}
-  softtype
+  softtype::InferenceVariable #TODO v0.5.0 T
   initialized::Bool
   inferdim::Float64
   ismargin::Bool
   dontmargin::Bool
   # Tonio surprise TODO
   # frontalonly::Bool
   # A valid, packable default constructor is needed.
-  VariableNodeData() = new(zeros(1,1), zeros(1,1), Symbol[], Int[], 0, false, :NOTHING, Symbol[], "", false, false, false, false)
+  VariableNodeData() = new(zeros(1,1), zeros(1,1), Symbol[], Int[], 0, false, :NOTHING, Symbol[], SingletonInferenceVariable(), false, false, false, false)
   VariableNodeData(x1::Array{Float64,2},
                    x2::Array{Float64,2},
                    x3::Vector{Symbol},