--- a/SbpOperators/src/SbpOperators.jl	Thu Jun 27 13:36:04 2019 +0200
+++ b/SbpOperators/src/SbpOperators.jl	Thu Jun 27 14:18:48 2019 +0200
@@ -3,205 +3,8 @@
 using RegionIndices
 
 include("stencil.jl")
-
-export D2, closureSize, apply, readOperator, apply_e, apply_d, apply_e_T, apply_d_T
-
-abstract type ConstantStencilOperator end
-
-# Apply for different regions Lower/Interior/Upper or Unknown region
-@inline function apply(op::ConstantStencilOperator, h::Real, v::AbstractVector, i::Index{Lower})
-    return @inbounds h*h*apply(op.closureStencils[Int(i)], v, Int(i))
-end
-
-@inline function apply(op::ConstantStencilOperator, h::Real, v::AbstractVector, i::Index{Interior})
-    return @inbounds h*h*apply(op.innerStencil, v, Int(i))
-end
-
-@inline function apply(op::ConstantStencilOperator, h::Real, v::AbstractVector, i::Index{Upper})
-    N = length(v)
-    return @inbounds h*h*Int(op.parity)*apply_backwards(op.closureStencils[N-Int(i)+1], v, Int(i))
-end
-
-@inline function apply(op::ConstantStencilOperator, h::Real, v::AbstractVector, index::Index{Unknown})
-    cSize = closureSize(op)
-    N = length(v)
-
-    i = Int(index)
-
-    if 0 < i <= cSize
-        return apply(op, h, v, Index{Lower}(i))
-    elseif cSize < i <= N-cSize
-        return apply(op, h, v, Index{Interior}(i))
-    elseif N-cSize < i <= N
-        return apply(op, h, v, Index{Upper}(i))
-    else
-        error("Bounds error") # TODO: Make this more standard
-    end
-end
-
-
-# Wrapper functions for using regular indecies without specifying regions
-@inline function apply(op::ConstantStencilOperator, h::Real, v::AbstractVector, i::Int)
-    return apply(op, h, v, Index{Unknown}(i))
-end
-
-@enum Parity begin
-    odd = -1
-    even = 1
-end
-
-struct D2{T,N,M,K} <: ConstantStencilOperator
-    quadratureClosure::NTuple{M,T}
-    innerStencil::Stencil{T,N}
-    closureStencils::NTuple{M,Stencil{T,K}}
-    eClosure::Stencil{T,M}
-    dClosure::Stencil{T,M}
-    parity::Parity
-end
-
-function closureSize(D::D2)::Int
-    return length(D.quadratureClosure)
-end
-
-function readOperator(D2fn, Hfn)
-    d = readSectionedFile(D2fn)
-    h = readSectionedFile(Hfn)
-
-    # Create inner stencil
-    innerStencilWeights = stringToTuple(Float64, d["inner_stencil"][1])
-    width = length(innerStencilWeights)
-    r = (-div(width,2), div(width,2))
-
-    innerStencil = Stencil(r, innerStencilWeights)
-
-    # Create boundary stencils
-    boundarySize = length(d["boundary_stencils"])
-    closureStencils = Vector{typeof(innerStencil)}() # TBD: is the the right way to get the correct type?
-
-    for i ∈ 1:boundarySize
-        stencilWeights = stringToTuple(Float64, d["boundary_stencils"][i])
-        width = length(stencilWeights)
-        r = (1-i,width-i)
-        closureStencils = (closureStencils..., Stencil(r, stencilWeights))
-    end
-
-    quadratureClosure = pad_tuple(stringToTuple(Float64, h["closure"][1]), boundarySize)
-    eClosure = Stencil((0,boundarySize-1), pad_tuple(stringToTuple(Float64, d["e"][1]), boundarySize))
-    dClosure = Stencil((0,boundarySize-1), pad_tuple(stringToTuple(Float64, d["d1"][1]), boundarySize))
-
-    d2 = D2(
-        quadratureClosure,
-        innerStencil,
-        closureStencils,
-        eClosure,
-        dClosure,
-        even
-    )
-
-    return d2
-end
-
-
-function apply_e_T(op::D2, v::AbstractVector, ::Type{Lower})
-    @boundscheck if length(v) < closureSize(op)
-        throw(BoundsError())
-    end
-    apply(op.eClosure,v,1)
-end
-
-function apply_e_T(op::D2, v::AbstractVector, ::Type{Upper})
-    @boundscheck if length(v) < closureSize(op)
-        throw(BoundsError())
-    end
-    apply(flip(op.eClosure),v,length(v))
-end
-
-
-function apply_e(op::D2, v::Number, N::Integer, i::Integer, ::Type{Lower})
-    @boundscheck if !(0<length(i) <= N)
-        throw(BoundsError())
-    end
-    op.eClosure[i-1]*v
-end
-
-function apply_e(op::D2, v::Number, N::Integer, i::Integer, ::Type{Upper})
-    @boundscheck if !(0<length(i) <= N)
-        throw(BoundsError())
-    end
-    op.eClosure[N-i]*v
-end
-
-function apply_d_T(op::D2, h_inv::Real, v::AbstractVector, ::Type{Lower})
-    @boundscheck if length(v) < closureSize(op)
-        throw(BoundsError())
-    end
-    h_inv*apply(op.dClosure,v,1)
-end
-
-function apply_d_T(op::D2, h_inv::Real, v::AbstractVector, ::Type{Upper})
-    @boundscheck if length(v) < closureSize(op)
-        throw(BoundsError())
-    end
-    -h_inv*apply(flip(op.dClosure),v,length(v))
-end
-
-function apply_d(op::D2, h_inv::Real, v::Number, N::Integer, i::Integer, ::Type{Lower})
-    @boundscheck if !(0<length(i) <= N)
-        throw(BoundsError())
-    end
-    h_inv*op.dClosure[i-1]*v
-end
-
-function apply_d(op::D2, h_inv::Real, v::Number, N::Integer, i::Integer, ::Type{Upper})
-    @boundscheck if !(0<length(i) <= N)
-        throw(BoundsError())
-    end
-    -h_inv*op.dClosure[N-i]*v
-end
-
-
-function readSectionedFile(filename)::Dict{String, Vector{String}}
-    f = open(filename)
-    sections = Dict{String, Vector{String}}()
-    currentKey = ""
-
-    for ln ∈ eachline(f)
-        if ln == "" || ln[1] == '#' # Skip comments and empty lines
-            continue
-        end
-
-        if isletter(ln[1]) # Found start of new section
-            if ~haskey(sections, ln)
-                sections[ln] =  Vector{String}()
-            end
-            currentKey = ln
-            continue
-        end
-
-        push!(sections[currentKey], ln)
-    end
-
-    return sections
-end
-
-function stringToTuple(T::DataType, s::String)
-    return Tuple(stringToVector(T,s))
-end
-
-function stringToVector(T::DataType, s::String)
-    return T.(eval.(Meta.parse.(split(s))))
-end
-
-
-function pad_tuple(t::NTuple{N, T}, n::Integer) where {N,T}
-    if N >= n
-        return t
-    else
-        return pad_tuple((t..., zero(T)), n)
-    end
-end
-
-sbp_operators_path() = (@__DIR__) * "/../operators/"
-export sbp_operators_path
+include("constantstenciloperator.jl")
+include("d2.jl")
+include("readoperator.jl")
 
 end # module