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annotate SbpOperators/src/readoperator.jl @ 271:ecd49ffe0bc8 boundary_conditions

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Dispatch apply_quadrature and apply_inverse_quadrature on Index-type. Add convenience functions dispatching on integer-indices
author Vidar Stiernström <vidar.stiernstrom@it.uu.se>
date Thu, 05 Dec 2019 11:54:56 +0100
parents f89718833620
children 51e7de109c25
Ignore whitespace changes - Everywhere: Within whitespace: At end of lines:
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7cb4492ccd60 Refactor package SbpOperators
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1 function readOperator(D2fn, Hfn)
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2 d = readSectionedFile(D2fn)
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3 h = readSectionedFile(Hfn)
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4
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5 # Create inner stencil
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6 innerStencilWeights = stringToTuple(Float64, d["inner_stencil"][1])
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7 width = length(innerStencilWeights)
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8 r = (-div(width,2), div(width,2))
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9
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10 innerStencil = Stencil(r, innerStencilWeights)
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11
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12 # Create boundary stencils
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13 boundarySize = length(d["boundary_stencils"])
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14 closureStencils = Vector{typeof(innerStencil)}() # TBD: is the the right way to get the correct type?
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15
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16 for i ∈ 1:boundarySize
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17 stencilWeights = stringToTuple(Float64, d["boundary_stencils"][i])
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18 width = length(stencilWeights)
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19 r = (1-i,width-i)
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20 closureStencils = (closureStencils..., Stencil(r, stencilWeights))
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21 end
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22
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23 quadratureClosure = pad_tuple(stringToTuple(Float64, h["closure"][1]), boundarySize)
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f89718833620 Store the inverse quadrature closure for D2. Implement the stencil application for the inverse quadrature
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24 inverseQuadratureClosure = 1.0 ./ quadratureClosure
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25 eClosure = Stencil((0,boundarySize-1), pad_tuple(stringToTuple(Float64, d["e"][1]), boundarySize))
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26 dClosure = Stencil((0,boundarySize-1), pad_tuple(stringToTuple(Float64, d["d1"][1]), boundarySize))
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27
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28 d2 = D2(
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29 quadratureClosure,
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30 inverseQuadratureClosure,
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31 innerStencil,
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32 closureStencils,
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33 eClosure,
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34 dClosure,
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35 even
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36 )
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37
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38 return d2
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39 end
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40
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41 function readSectionedFile(filename)::Dict{String, Vector{String}}
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42 f = open(filename)
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43 sections = Dict{String, Vector{String}}()
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44 currentKey = ""
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45
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46 for ln ∈ eachline(f)
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47 if ln == "" || ln[1] == '#' # Skip comments and empty lines
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48 continue
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49 end
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51 if isletter(ln[1]) # Found start of new section
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52 if ~haskey(sections, ln)
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53 sections[ln] = Vector{String}()
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54 end
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55 currentKey = ln
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56 continue
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57 end
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58
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59 push!(sections[currentKey], ln)
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60 end
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61
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62 return sections
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63 end
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64
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65 function stringToTuple(T::DataType, s::String)
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66 return Tuple(stringToVector(T,s))
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67 end
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68
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69 function stringToVector(T::DataType, s::String)
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70 return T.(eval.(Meta.parse.(split(s))))
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71 end
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72
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73 function pad_tuple(t::NTuple{N, T}, n::Integer) where {N,T}
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74 if N >= n
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75 return t
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76 else
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77 return pad_tuple((t..., zero(T)), n)
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78 end
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79 end
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80
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81 sbp_operators_path() = (@__DIR__) * "/../operators/"
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82 export sbp_operators_path