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Merge pull request #61 from KristofferC/tp/options-reorg
Options cleanup.
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| Original file line number | Diff line number | Diff line change |
|---|---|---|
| @@ -0,0 +1,123 @@ | ||
| """ | ||
| Options passed to `pgfplots` for various structures (`table`, `plot`, etc). | ||
| Contents emitted in `key = value` form, or `key` when `value ≡ nothing`. Also | ||
| see the [`@pgf`](@ref) convenience macro. | ||
| """ | ||
| const Options = OrderedDict{Any, Any} | ||
|
|
||
| function prockey(key) | ||
| if isa(key, Symbol) || isa(key, String) | ||
| return :($(string(key)) => nothing) | ||
| elseif @capture(key, (a_ : b_) | (a_ => b_) | (a_ = b_)) | ||
| return :($(string(a))=>$b) | ||
| end | ||
| error("Invalid pgf option $key") | ||
| end | ||
|
|
||
| function procmap(d) | ||
| if @capture(d, f_(xs__)) | ||
| return :($f($(map(procmap, xs)...))) | ||
| elseif !@capture(d, {xs__}) | ||
| return d | ||
| else | ||
| return :($(Options)($(map(prockey, xs)...))) | ||
| end | ||
| end | ||
|
|
||
| """ | ||
| @pgf { ... } | ||
| @pgf some(nested(form({ ... }))) | ||
| Construct [`Options`](@ref) from comma-delimited `key` (without value), | ||
| `key = value`, `key : value`, or `key => value` pairs enclosed in `{ ... }`, | ||
| anywhere in the expression. | ||
| Multi-word keys need to be either quoted, or written with underscores replacing | ||
| spaces. | ||
| ```julia | ||
| @pgf { | ||
| "only marks", | ||
| mark_size = "0.6pt", | ||
| mark = "o", | ||
| color => "black", | ||
| } | ||
| ``` | ||
| """ | ||
| macro pgf(ex) | ||
| esc(prewalk(procmap, ex)) | ||
| end | ||
|
|
||
| """ | ||
| Types also accepted as options. | ||
| """ | ||
| const PGFOption = Union{Pair, String, Options} | ||
|
|
||
| # TODO: Make OptionType a trait somehow? | ||
| """ | ||
| Subtypes have an `options::Options` field. | ||
| """ | ||
| abstract type OptionType end | ||
|
|
||
| Base.getindex(a::OptionType, s::String) = a.options[s] | ||
| Base.setindex!(a::OptionType, v, s::String) = (a.options[s] = v; a) | ||
| Base.delete!(a::OptionType, s::String) = (delete!(a.options, s); a) | ||
| Base.copy(a::OptionType) = deepcopy(a) | ||
| function Base.merge!(a::OptionType, d::Options) | ||
| for (k, v) in d | ||
| a[k] = v | ||
| end | ||
| return a | ||
| end | ||
|
|
||
| function print_options(io::IO, options::Options) | ||
| print(io, "[") | ||
| print_opt(io, options) | ||
| print(io, "]\n") | ||
| end | ||
|
|
||
| accum_opt!(d::AbstractDict, opt::String) = d[opt] = nothing | ||
| accum_opt!(d::AbstractDict, opt::Pair) = d[first(opt)] = last(opt) | ||
| function accum_opt!(d::AbstractDict, opt::AbstractDict) | ||
| for (k, v) in opt | ||
| d[k] = v | ||
| end | ||
| end | ||
|
|
||
| function dictify(args) | ||
| d = Options() | ||
| for arg in args | ||
| accum_opt!(d, arg) | ||
| end | ||
| return d | ||
| end | ||
|
|
||
| function print_opt(io::IO, d::AbstractDict) | ||
| replace_underline(x) = x | ||
| replace_underline(x::Union{String, Symbol}) = replace(string(x), "_", " ") | ||
| for (i, (k, v)) in enumerate(d) | ||
| print(io, replace_underline(k)) | ||
| if v != nothing | ||
| print(io, "={") | ||
| print_opt(io, v) | ||
| print(io, "}") | ||
| end | ||
| if i != length(d) | ||
| print(io, ", ") | ||
| end | ||
| end | ||
| end | ||
|
|
||
| print_opt(io::IO, s) = print(io, s) | ||
| print_opt(io::IO, v::Vector) = print(io, join(v, ",")) | ||
|
|
||
| function print_opt(io::IO, t::Tuple) | ||
| length(t) == 0 && return | ||
| for i in 1:length(t) | ||
| i != 1 && print(io, "{") | ||
| print_opt(io, t[i]) | ||
| i != length(t) && print(io, "}") | ||
| end | ||
| end |
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